{"id":136,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/harmonics\/"},"modified":"2026-06-08T04:12:17","modified_gmt":"2026-06-08T04:12:17","slug":"harmonics","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/vi\/glossary\/harmonics\/","title":{"rendered":"S\u00f3ng h\u00e0i trong ph\u00e2n t\u00edch rung \u0111\u1ed9ng l\u00e0 g\u00ec?"},"content":{"rendered":"<style>\n:root {\n  --navy: #0a2540;\n  --navy-light: #1a3a5c;\n  --blue: #2563eb;\n  --blue-light: #3b82f6;\n  --blue-pale: #dbeafe;\n  --blue-ghost: #eff6ff;\n  --beige: #f5f0e8;\n  --beige-dark: #e8dfd3;\n  --beige-light: #faf7f2;\n  --white: #ffffff;\n  --text: #1e293b;\n  --text-secondary: #475569;\n  --text-muted: #94a3b8;\n  --border: #cbd5e1;\n  --border-light: #e2e8f0;\n  --success: #059669;\n  --success-light: #d1fae5;\n  --warning: #d97706;\n  --warning-light: #fef3c7;\n  --danger: #dc2626;\n  --danger-light: #fee2e2;\n  --purple: #7c3aed;\n  --purple-light: #ede9fe;\n  --shadow-sm: 0 1px 3px rgba(10,37,64,0.08);\n  --shadow-md: 0 4px 12px rgba(10,37,64,0.1);\n  --shadow-lg: 0 8px 30px rgba(10,37,64,0.12);\n  --radius: 12px;\n  --radius-sm: 8px;\n  --radius-lg: 16px;\n}\n* { margin: 0; padding: 0; box-sizing: border-box; }\nbody {\n  font-family: 'Source Sans 3', sans-serif;\n  color: var(--text);\n  background: var(--beige-light);\n  min-width: 1200px;\n  line-height: 1.7;\n  font-size: 16px;\n  -webkit-font-smoothing: antialiased;\n}<\/p>\n<p>\/* ===== HERO ===== *\/\n.hero {\n  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 50%, #234e7a 100%);\n  color: var(--white);\n  padding: 56px 0 48px;\n  position: relative;\n  overflow: hidden;\n}\n.hero::before {\n  content: '';\n  position: absolute; inset: 0;\n  background:\n    radial-gradient(circle at 25% 75%, rgba(37,99,235,0.15) 0%, transparent 50%),\n    radial-gradient(circle at 75% 25%, rgba(37,99,235,0.1) 0%, transparent 50%);\n  pointer-events: none;\n}\n.hero::after {\n  content: '';\n  position: absolute; inset: 0;\n  background: url(\"data:image\/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http:\/\/www.w3.org\/2000\/svg'%3E%3Cg fill='none'%3E%3Cpath d='M0 40 Q20 20 40 40 Q60 60 80 40' stroke='%23ffffff' stroke-opacity='0.02' stroke-width='1' fill='none'\/%3E%3C\/g%3E%3C\/svg%3E\");\n  pointer-events: none;\n}\n.hero-inner {\n  max-width: 1280px; margin: 0 auto; padding: 0 48px; position: relative; z-index: 1;\n}\n.hero h1 {\n  font-family: 'DM Serif Display', serif; font-size: 46px; font-weight: 400; line-height: 1.15; margin-bottom: 16px; letter-spacing: -0.5px;\n}\n.hero h1 span { color: var(--blue-light); }\n.hero .subtitle { font-size: 19px; font-weight: 300; color: rgba(255,255,255,0.78); max-width: 820px; line-height: 1.6; }\n.breadcrumb { margin-bottom: 20px; font-size: 14px; color: rgba(255,255,255,0.5); }\n.breadcrumb a { color: rgba(255,255,255,0.6); text-decoration: none; }\n.breadcrumb a:hover { color: rgba(255,255,255,0.9); }<\/p>\n<p>\/* ===== QUICK NAV ===== *\/\n.quick-nav {\n  background: var(--white); border-bottom: 1px solid var(--border-light); position: sticky; top: 0; z-index: 100; box-shadow: var(--shadow-sm);\n}\n.quick-nav-inner { max-width: 1280px; margin: 0 auto; padding: 0 48px; display: flex; gap: 0; overflow-x: auto; }\n.quick-nav a {\n  display: flex; align-items: center; gap: 6px; padding: 14px 18px; font-size: 14px; font-weight: 500;\n  color: var(--text-secondary); text-decoration: none; white-space: nowrap; border-bottom: 2px solid transparent; transition: all 0.2s;\n}\n.quick-nav a:hover { color: var(--blue); border-bottom-color: var(--blue); background: var(--blue-ghost); }<\/p>\n<p>.container { max-width: 1280px; margin: 0 auto; padding: 0 48px; }<\/p>\n<p>\/* ===== SUMMARY DASHBOARD ===== *\/\n.summary-dashboard { padding: 40px 0; background: var(--white); border-bottom: 1px solid var(--border-light); }\n.dashboard-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }<\/p>\n<p>.calc-panel {\n  background: var(--beige-light); border: 1px solid var(--beige-dark); border-radius: var(--radius-lg); padding: 32px; position: relative; overflow: hidden;\n}\n.calc-panel::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--blue), var(--blue-light)); }\n.panel-title { font-family: 'DM Serif Display', serif; font-size: 22px; margin-bottom: 6px; color: var(--navy); }\n.panel-subtitle { font-size: 14px; color: var(--text-muted); margin-bottom: 24px; }\n.calc-form { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }\n.form-group { display: flex; flex-direction: column; gap: 5px; }\n.form-group.full-width { grid-column: 1 \/ -1; }\n.form-group label { font-size: 13px; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; }\n.form-group label .unit { font-weight: 400; text-transform: none; color: var(--text-muted); }\n.form-group input, .form-group select {\n  padding: 10px 14px; border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: 15px;\n  font-family: 'JetBrains Mono', monospace; background: var(--white); color: var(--text); transition: border-color 0.2s, box-shadow 0.2s;\n}\n.form-group input:focus, .form-group select:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(37,99,235,0.12); }\n.calc-btn {\n  grid-column: 1 \/ -1; padding: 13px; background: var(--blue); color: var(--white); border: none; border-radius: var(--radius-sm);\n  font-size: 15px; font-weight: 600; font-family: 'Source Sans 3', sans-serif; cursor: pointer; transition: all 0.2s; margin-top: 4px;\n}\n.calc-btn:hover { background: var(--navy); transform: translateY(-1px); box-shadow: var(--shadow-md); }<\/p>\n<p>\/* Results panel *\/\n.results-panel {\n  background: var(--navy); border-radius: var(--radius-lg); padding: 32px; color: var(--white); position: relative; overflow: hidden;\n}\n.results-panel::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 100% 0%, rgba(37,99,235,0.2) 0%, transparent 60%); pointer-events: none; }\n.results-panel .panel-title { color: var(--white); }\n.results-panel .panel-subtitle { color: rgba(255,255,255,0.5); }<\/p>\n<p>.spectrum-canvas-wrap { position: relative; z-index: 1; width: 100%; height: 250px; margin-bottom: 12px; }\n.spectrum-canvas-wrap canvas { width: 100%; height: 100%; }<\/p>\n<p>.harmonic-table-mini { position: relative; z-index: 1; width: 100%; max-height: 195px; overflow-y: auto; }\n.harmonic-table-mini table { width: 100%; border-collapse: collapse; }\n.harmonic-table-mini th {\n  background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.7); padding: 6px 10px; font-size: 11px;\n  text-transform: uppercase; letter-spacing: 0.5px; text-align: left; position: sticky; top: 0;\n}\n.harmonic-table-mini td {\n  padding: 5px 10px; font-family: 'JetBrains Mono', monospace; font-size: 13px;\n  border-bottom: 1px solid rgba(255,255,255,0.06); color: rgba(255,255,255,0.8);\n}\n.harmonic-table-mini tr:hover td { background: rgba(255,255,255,0.05); }\n.results-empty { text-align: center; padding: 120px 20px; color: rgba(255,255,255,0.35); font-size: 15px; position: relative; z-index: 1; }\n.results-empty .icon { font-size: 36px; margin-bottom: 12px; display: block; }<\/p>\n<p>\/* ===== DIAGNOSTIC SECTION ===== *\/\n.diagnostic-section { padding: 40px 0 48px; background: var(--beige-light); }\n.section-header { margin-bottom: 28px; }\n.section-header h2 { font-family: 'DM Serif Display', serif; font-size: 30px; color: var(--navy); margin-bottom: 6px; }\n.section-header p { font-size: 16px; color: var(--text-secondary); }<\/p>\n<p>.fault-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 36px; }\n.fault-card {\n  background: var(--white); border: 1px solid var(--border-light); border-radius: var(--radius); padding: 24px;\n  box-shadow: var(--shadow-sm); transition: all 0.3s; position: relative; overflow: hidden;\n}\n.fault-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }\n.fault-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; }\n.fault-card.unbalance::before { background: var(--blue); }\n.fault-card.misalignment::before { background: var(--warning); }\n.fault-card.looseness::before { background: var(--danger); }\n.fault-card.electrical::before { background: var(--purple); }\n.fault-card.rub::before { background: #ec4899; }\n.fault-card.bearing::before { background: var(--success); }<\/p>\n<p>.fc-icon { font-size: 28px; margin-bottom: 10px; }\n.fc-title { font-family: 'DM Serif Display', serif; font-size: 18px; color: var(--navy); margin-bottom: 4px; }\n.fc-pattern { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--blue); margin-bottom: 10px; font-weight: 600; }\n.fc-body { font-size: 13px; color: var(--text-secondary); line-height: 1.5; }\n.fc-body strong { color: var(--text); }<\/p>\n<p>.fc-spectrum { display: flex; align-items: flex-end; gap: 3px; height: 50px; margin-top: 12px; padding: 4px; background: var(--beige-light); border-radius: 4px; }\n.fc-spectrum .bar { flex: 1; border-radius: 2px 2px 0 0; min-height: 2px; position: relative; }\n.fc-spectrum .bar-label {\n  position: absolute; bottom: -14px; left: 50%; transform: translateX(-50%);\n  font-size: 8px; font-family: 'JetBrains Mono', monospace; color: var(--text-muted); white-space: nowrap;\n}<\/p>\n<p>\/* Tables *\/\n.table-wrap {\n  background: var(--white); border-radius: var(--radius); border: 1px solid var(--border-light); overflow: hidden; box-shadow: var(--shadow-sm); margin-bottom: 32px;\n}\n.table-wrap .table-title { padding: 16px 24px; font-weight: 600; font-size: 15px; background: var(--beige); border-bottom: 1px solid var(--border-light); color: var(--navy); }\ntable { width: 100%; border-collapse: collapse; }\ntable th {\n  background: var(--navy); color: var(--white); padding: 12px 16px; font-size: 13px;\n  font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; text-align: left;\n}\ntable td { padding: 11px 16px; font-size: 14px; border-bottom: 1px solid var(--border-light); color: var(--text); }\ntable tr:last-child td { border-bottom: none; }\ntable tr:hover td { background: var(--blue-ghost); }\ntable td:first-child { font-weight: 600; }\n.mono { font-family: 'JetBrains Mono', monospace; font-size: 13px; }\n.tag { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.3px; }\n.tag.high { background: var(--danger-light); color: #991b1b; }\n.tag.medium { background: var(--warning-light); color: #92400e; }\n.tag.low { background: var(--success-light); color: #065f46; }\n.tag.info { background: var(--blue-pale); color: var(--navy); }\n.tag.purple { background: var(--purple-light); color: #5b21b6; }<\/p>\n<p>\/* ===== MAIN CONTENT ===== *\/\n.main-content { padding: 48px 0 64px; background: var(--white); }\n.content-layout { display: grid; grid-template-columns: 1fr 300px; gap: 48px; }<\/p>\n<p>.toc-sidebar { position: sticky; top: 80px; align-self: start; }\n.toc-box { background: var(--beige-light); border: 1px solid var(--beige-dark); border-radius: var(--radius); padding: 24px; }\n.toc-box h3 { font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--navy); margin-bottom: 16px; }\n.toc-box a {\n  display: block; padding: 6px 0; font-size: 14px; color: var(--text-secondary); text-decoration: none;\n  border-left: 2px solid transparent; padding-left: 12px; transition: all 0.2s;\n}\n.toc-box a:hover { color: var(--blue); border-left-color: var(--blue); }\n.toc-box a.sub { padding-left: 28px; font-size: 13px; color: var(--text-muted); }<\/p>\n<p>.article-content h2 { font-family: 'DM Serif Display', serif; font-size: 28px; color: var(--navy); margin: 48px 0 16px; padding-top: 20px; }\n.article-content h2:first-child { margin-top: 0; }\n.article-content h3 { font-size: 20px; font-weight: 700; color: var(--navy-light); margin: 32px 0 12px; }\n.article-content h4 { font-size: 16px; font-weight: 700; color: var(--text); margin: 24px 0 8px; }\n.article-content p { margin-bottom: 16px; color: var(--text); line-height: 1.8; }\n.article-content ul, .article-content ol { margin: 0 0 16px 24px; line-height: 1.8; }\n.article-content li { margin-bottom: 6px; }\n.article-content li strong { color: var(--navy); }\n.article-content a { color: var(--blue); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color 0.2s; }\n.article-content a:hover { border-bottom-color: var(--blue); }<\/p>\n<p>.info-box { background: var(--blue-ghost); border-left: 4px solid var(--blue); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; padding: 20px 24px; margin: 24px 0; }\n.info-box.warning { background: #fffbeb; border-left-color: var(--warning); }\n.info-box.success { background: #ecfdf5; border-left-color: var(--success); }\n.info-box.danger { background: #fef2f2; border-left-color: var(--danger); }\n.info-box .box-title { font-weight: 700; font-size: 15px; margin-bottom: 6px; color: var(--navy); }\n.info-box p { margin-bottom: 8px; font-size: 14px; }\n.info-box p:last-child { margin-bottom: 0; }<\/p>\n<p>.example-block { background: var(--beige-light); border: 1px solid var(--beige-dark); border-radius: var(--radius); padding: 28px; margin: 24px 0; }\n.example-block .example-title { font-family: 'DM Serif Display', serif; font-size: 18px; color: var(--navy); margin-bottom: 16px; }<\/p>\n<p>.formula-box {\n  background: var(--navy); color: var(--white); border-radius: var(--radius); padding: 24px 32px; margin: 24px 0;\n  text-align: center; position: relative; overflow: hidden;\n}\n.formula-box::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 80% 50%, rgba(37,99,235,0.15) 0%, transparent 60%); pointer-events: none; }\n.formula-box .formula-label { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--blue-light); margin-bottom: 10px; position: relative; }\n.formula-box .formula-main { font-family: 'JetBrains Mono', monospace; font-size: 22px; font-weight: 600; position: relative; line-height: 1.4; }\n.formula-box .formula-note { font-size: 13px; color: rgba(255,255,255,0.5); margin-top: 10px; position: relative; }<\/p>\n<p>.article-table { width: 100%; margin: 20px 0; border: 1px solid var(--border-light); border-radius: var(--radius-sm); overflow: hidden; }\n.article-table th { padding: 10px 14px; font-size: 12px; }\n.article-table td { padding: 10px 14px; font-size: 14px; }<\/p>\n<p>\/* ===== SHOP CTA ===== *\/\n.shop-cta {\n  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%); padding: 48px 0; color: var(--white);\n  text-align: center; position: relative; overflow: hidden;\n}\n.shop-cta::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 50% 50%, rgba(37,99,235,0.15) 0%, transparent 60%); pointer-events: none; }\n.shop-cta h2 { font-family: 'DM Serif Display', serif; font-size: 32px; margin-bottom: 12px; position: relative; }\n.shop-cta p { font-size: 17px; color: rgba(255,255,255,0.7); margin-bottom: 28px; max-width: 640px; margin-left: auto; margin-right: auto; position: relative; }\n.shop-cta .cta-btn {\n  display: inline-flex; align-items: center; gap: 8px; padding: 14px 36px; background: var(--blue); color: var(--white);\n  text-decoration: none; border-radius: var(--radius-sm); font-weight: 600; font-size: 16px; transition: all 0.2s; position: relative;\n}\n.shop-cta .cta-btn:hover { background: var(--blue-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,99,235,0.3); }<\/p>\n<p>.page-footer { background: var(--beige); border-top: 1px solid var(--beige-dark); padding: 32px 0; text-align: center; }\n.page-footer a { color: var(--blue); text-decoration: none; font-weight: 500; }\n.page-footer p { font-size: 14px; color: var(--text-muted); }<\/p>\n<p>@media print { .quick-nav, .shop-cta { display: none; } body { min-width: auto; } }\n<\/style>\n<p><!-- HERO --><\/p>\n<header class=\"hero\">\n<div class=\"hero-inner\">\n<div class=\"breadcrumb\">\n      <a href=\"https:\/\/vibromera.eu\/vi\/\">Trang ch\u1ee7<\/a> \u2192 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/\">Thu\u1eadt ng\u1eef<\/a> \u2192 \u00c2m b\u1ed9i\n    <\/div>\n<h1>Hi\u1ec3u bi\u1ebft <span>S\u00f3ng h\u00e0i<\/span> trong Ph\u00e2n t\u00edch dao \u0111\u1ed9ng<\/h1>\n<p class=\"subtitle\">T\u1ea1i sao b\u1ed9i s\u1ed1 nguy\u00ean c\u1ee7a t\u1ed1c \u0111\u1ed9 tr\u1ee5c xu\u1ea5t hi\u1ec7n trong ph\u1ed5 rung \u0111\u1ed9ng \u2014 v\u00e0 l\u00e0m th\u1ebf n\u00e0o m\u00f4 h\u00ecnh s\u00f3ng h\u00e0i 1\u00d7, 2\u00d7, 3\u00d7\u2026 ti\u1ebft l\u1ed9 b\u1ea3n ch\u1ea5t ch\u00ednh x\u00e1c c\u1ee7a c\u00e1c l\u1ed7i m\u00e1y m\u00f3c t\u1eeb m\u1ea5t c\u00e2n b\u1eb1ng v\u00e0 l\u1ec7ch tr\u1ee5c \u0111\u1ebfn l\u1ecfng l\u1ebbo v\u00e0 ma s\u00e1t.<\/p>\n<\/p><\/div>\n<\/header>\n\t\t<section class=\"woocommerce hestia-shop products is-shortcode\" id=\"products\" data-sorder=\"hestia_shop\" >\n\t\t\t\t\t\t<div class=\"\">\n\t\t\t\t\t\t<div class=\"hestia-shop-content\">\n\t\t\t<div class=\"row\" data-aos=\"fade-up\" >\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/balanset-1\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/balanset-1\/\" title=\"M\u00e1y c\u00e2n b\u1eb1ng di \u0111\u1ed9ng &amp; M\u00e1y ph\u00e2n t\u00edch rung \u0111\u1ed9ng Balanset-1A\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"B\u1ed9 \u0111\u1ea7y \u0111\u1ee7 m\u00e1y c\u00e2n b\u1eb1ng v\u00e0 ph\u00e2n t\u00edch rung \u0111\u1ed9ng c\u1ea7m tay Balanset-1A\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/vi\/product-category\/devices\/\" rel=\"tag\">Thi\u1ebft b\u1ecb<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/vi\/product\/balanset-1\/\" title=\"M\u00e1y c\u00e2n b\u1eb1ng di \u0111\u1ed9ng &amp; M\u00e1y ph\u00e2n t\u00edch rung \u0111\u1ed9ng Balanset-1A\">M\u00e1y c\u00e2n b\u1eb1ng di \u0111\u1ed9ng &amp; M\u00e1y ph\u00e2n t\u00edch rung \u0111\u1ed9ng Balanset-1A<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,975.00<\/span> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/vi\/wp-json\/wp\/v2\/glossary\/136?add-to-cart=986\" data-quantity=\"1\" data-product_id=\"986\" data-product_sku=\"BS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/vi\/wp-json\/wp\/v2\/glossary\/136?add-to-cart=986\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_986\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"986\" data-product_sku=\"BS-1\" aria-label=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_986\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/vibration-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/vibration-sensor\/\" title=\"C\u1ea3m bi\u1ebfn rung\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"C\u1eadn c\u1ea3nh c\u1ea3m bi\u1ebfn rung Balanset-1A\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/vi\/product-category\/parts\/\" rel=\"tag\">Ph\u1ee5 t\u00f9ng<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/vi\/product\/vibration-sensor\/\" title=\"C\u1ea3m bi\u1ebfn rung\">C\u1ea3m bi\u1ebfn rung<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>90.00<\/span> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/vi\/wp-json\/wp\/v2\/glossary\/136?add-to-cart=1820\" data-quantity=\"1\" data-product_id=\"1820\" data-product_sku=\"VS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/vi\/wp-json\/wp\/v2\/glossary\/136?add-to-cart=1820\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1820\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1820\" data-product_sku=\"VS-1\" aria-label=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1820\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/optical-sensor-for-balanset-and-arbalance\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"C\u1ea3m bi\u1ebfn quang h\u1ecdc (M\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 laser)\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"C\u1ea3m bi\u1ebfn quang h\u1ecdc (M\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 laser)\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/vi\/product-category\/parts\/\" rel=\"tag\">Ph\u1ee5 t\u00f9ng<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/vi\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"C\u1ea3m bi\u1ebfn quang h\u1ecdc (M\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 laser)\">C\u1ea3m bi\u1ebfn quang h\u1ecdc (M\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 laser)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>124.00<\/span> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/vi\/wp-json\/wp\/v2\/glossary\/136?add-to-cart=1832\" data-quantity=\"1\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/vi\/wp-json\/wp\/v2\/glossary\/136?add-to-cart=1832\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1832\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" aria-label=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1832\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/balanset-4\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/balanset-4\/\" title=\"Balanset-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"B\u1ed9 d\u1ee5ng c\u1ee5 c\u00e2n b\u1eb1ng r\u00f4to Vibromera: h\u1ed9p \u0111\u1ef1ng, b\u1ed9 \u0111i\u1ec1u ch\u1ec9nh t\u00edn hi\u1ec7u \u0111a k\u00eanh, m\u00e1y ph\u00e2n t\u00edch c\u1ea7m tay, \u0111\u1ebf t\u1eeb, c\u1ea3m bi\u1ebfn rung v\u00e0 d\u00e2y c\u00e1p xo\u1eafn.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4.webp 640w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/vi\/product-category\/devices\/\" rel=\"tag\">Thi\u1ebft b\u1ecb<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/vi\/product\/balanset-4\/\" title=\"Balanset-4\">Balanset-4<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>6,803.00<\/span> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/vi\/wp-json\/wp\/v2\/glossary\/136?add-to-cart=1833\" data-quantity=\"1\" data-product_id=\"1833\" data-product_sku=\"BS-4\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/vi\/wp-json\/wp\/v2\/glossary\/136?add-to-cart=1833\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1833\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1833\" data-product_sku=\"BS-4\" aria-label=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1833\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div><!-- \/.row --><div class=\"row\">\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/magnet-stand\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/magnet-stand\/\" title=\"\u0110\u1ebf t\u1eeb Insize-60-kgf\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"\u0110\u1ebf nam ch\u00e2m.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/vi\/product-category\/parts\/\" rel=\"tag\">Ph\u1ee5 t\u00f9ng<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/vi\/product\/magnet-stand\/\" title=\"\u0110\u1ebf t\u1eeb Insize-60-kgf\">\u0110\u1ebf t\u1eeb Insize-60-kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/vi\/wp-json\/wp\/v2\/glossary\/136?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" data-product_sku=\"MS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/vi\/wp-json\/wp\/v2\/glossary\/136?add-to-cart=1852\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1852\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1852\" data-product_sku=\"MS-1\" aria-label=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1852\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/reflective-tape\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/reflective-tape\/\" title=\"B\u0103ng ph\u1ea3n quang\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"B\u0103ng ph\u1ea3n quang\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-16x12.webp 16w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/vi\/product-category\/parts\/\" rel=\"tag\">Ph\u1ee5 t\u00f9ng<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/vi\/product\/reflective-tape\/\" title=\"B\u0103ng ph\u1ea3n quang\">B\u0103ng ph\u1ea3n quang<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>10.00<\/span> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/vi\/wp-json\/wp\/v2\/glossary\/136?add-to-cart=2329\" data-quantity=\"1\" data-product_id=\"2329\" data-product_sku=\"rt-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/vi\/wp-json\/wp\/v2\/glossary\/136?add-to-cart=2329\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2329\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"2329\" data-product_sku=\"rt-1\" aria-label=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2329\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/dynamic-balancer-balanset-1a\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/dynamic-balancer-balanset-1a\/\" title=\"M\u00e1y c\u00e2n b\u1eb1ng \u0111\u1ed9ng \u201cBalanset-1A\u201d OEM\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"N\u1ed9i dung b\u1ed9 s\u1ea3n ph\u1ea9m Balanset-1A bao g\u1ed3m thi\u1ebft b\u1ecb giao di\u1ec7n, c\u1ea3m bi\u1ebfn, m\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 v\u00e0 c\u00e1c ph\u1ee5 ki\u1ec7n\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1024x683.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1536x1024.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-2048x1366.webp 2048w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-e1732998877834.webp 708w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/vi\/product-category\/devices\/\" rel=\"tag\">Thi\u1ebft b\u1ecb<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/vi\/product\/dynamic-balancer-balanset-1a\/\" title=\"M\u00e1y c\u00e2n b\u1eb1ng \u0111\u1ed9ng \u201cBalanset-1A\u201d OEM\">M\u00e1y c\u00e2n b\u1eb1ng \u0111\u1ed9ng \u201cBalanset-1A\u201d OEM<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,735.00<\/span> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/vi\/wp-json\/wp\/v2\/glossary\/136?add-to-cart=4193\" data-quantity=\"1\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/vi\/wp-json\/wp\/v2\/glossary\/136?add-to-cart=4193\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_4193\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" aria-label=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_4193\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n<p><!-- QUICK NAV --><\/p>\n<nav class=\"quick-nav\">\n<div class=\"quick-nav-inner\">\n    <a href=\"#calculator\">\u2699 M\u00e1y t\u00ednh s\u00f3ng h\u00e0i<\/a><br \/>\n    <a href=\"#diagnostic-cards\">\ud83d\udcca C\u00e1c ki\u1ec3u l\u1ed7i<\/a><br \/>\n    <a href=\"#diagnostic-table\">\ud83d\udccb B\u1ea3ng ch\u1ea9n \u0111o\u00e1n<\/a><br \/>\n    <a href=\"#definition\">\ud83d\udcd0 \u0110\u1ecbnh ngh\u0129a<\/a><br \/>\n    <a href=\"#why-generated\">\ud83d\udd22 T\u1ea1i sao l\u1ea1i \u0111\u01b0\u1ee3c t\u1ea1o ra?<\/a><br \/>\n    <a href=\"#fault-signatures\">\ud83d\udd0d D\u1ea5u hi\u1ec7u l\u1ed7i<\/a><br \/>\n    <a href=\"#non-synchronous\">\u3030\ufe0f Kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/a><br \/>\n    <a href=\"#analysis-guide\">\ud83d\udee0 H\u01b0\u1edbng d\u1eabn ph\u00e2n t\u00edch<\/a><br \/>\n    <a href=\"#case-studies\">\ud83d\udcdd Nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p<\/a>\n  <\/div>\n<\/nav>\n<p><!-- SUMMARY DASHBOARD --><\/p>\n<section class=\"summary-dashboard\" id=\"calculator\">\n<div class=\"container\">\n<div class=\"dashboard-grid\">\n<p>      <!-- Calculator --><\/p>\n<div class=\"calc-panel\">\n<h2 class=\"panel-title\">M\u00e1y t\u00ednh t\u1ea7n s\u1ed1 h\u00e0i<\/h2>\n<p class=\"panel-subtitle\">T\u00ednh to\u00e1n s\u00f3ng h\u00e0i v\u00e0 t\u1ea7n s\u1ed1 l\u1ed7i ph\u1ed5 bi\u1ebfn cho b\u1ea5t k\u1ef3 t\u1ed1c \u0111\u1ed9 tr\u1ee5c n\u00e0o.<\/p>\n<div class=\"calc-form\">\n<div class=\"form-group\">\n            <label>T\u1ed1c \u0111\u1ed9 tr\u1ee5c <span class=\"unit\">(RPM)<\/span><\/label><br \/>\n            <input type=\"number\" id=\"shaftRPM\" value=\"1800\" min=\"1\" step=\"1\">\n          <\/div>\n<div class=\"form-group\">\n            <label>S\u1ed1 l\u01b0\u1ee3ng s\u00f3ng h\u00e0i<\/label><br \/>\n            <select id=\"numHarmonics\"><option value=\"5\">5 s\u00f3ng h\u00e0i<\/option><option value=\"10\" selected>10 s\u00f3ng h\u00e0i<\/option><option value=\"15\">15 s\u00f3ng h\u00e0i<\/option><option value=\"20\">20 s\u00f3ng h\u00e0i<\/option><\/select>\n          <\/div>\n<div class=\"form-group\">\n            <label>S\u1ed1 l\u01b0\u1ee3ng c\u00e1nh qu\u1ea1t <span class=\"unit\">(kh\u00f4ng b\u1eaft bu\u1ed9c)<\/span><\/label><br \/>\n            <input type=\"number\" id=\"numBlades\" value=\"\" min=\"0\" step=\"1\" placeholder=\"v\u00ed d\u1ee5 5, 7\">\n          <\/div>\n<div class=\"form-group\">\n            <label>S\u1ed1 r\u0103ng c\u1ee7a b\u00e1nh r\u0103ng <span class=\"unit\">(kh\u00f4ng b\u1eaft bu\u1ed9c)<\/span><\/label><br \/>\n            <input type=\"number\" id=\"numTeeth\" value=\"\" min=\"0\" step=\"1\" placeholder=\"v\u00ed d\u1ee5 48\">\n          <\/div>\n<div class=\"form-group\">\n            <label>T\u1ea7n s\u1ed1 \u0111\u01b0\u1eddng d\u00e2y <span class=\"unit\">(Hz)<\/span><\/label><br \/>\n            <select id=\"lineFreq\"><option value=\"50\" selected>50 Hz (Ch\u00e2u \u00c2u \/ Ch\u00e2u \u00c1)<\/option><option value=\"60\">60 Hz (Ch\u00e2u M\u1ef9)<\/option><\/select>\n          <\/div>\n<div class=\"form-group\">\n            <label>S\u1ed1 l\u01b0\u1ee3ng c\u1ef1c <span class=\"unit\">(\u0111\u1ed9ng c\u01a1)<\/span><\/label><br \/>\n            <select id=\"numPoles\"><option value=\"2\">2 c\u1ef1c<\/option><option value=\"4\" selected>4 c\u1ef1c<\/option><option value=\"6\">6 c\u1ef1c<\/option><option value=\"8\">8 c\u1ef1c<\/option><\/select>\n          <\/div>\n<p>          <button class=\"calc-btn\" onclick=\"calculate()\">T\u00ednh to\u00e1n t\u1ea5t c\u1ea3 c\u00e1c t\u1ea7n s\u1ed1 \u2192<\/button>\n        <\/div>\n<\/p><\/div>\n<p>      <!-- Results --><\/p>\n<div class=\"results-panel\">\n<h2 class=\"panel-title\">Ph\u1ed5 s\u00f3ng h\u00e0i<\/h2>\n<p class=\"panel-subtitle\">B\u1ea3n \u0111\u1ed3 t\u1ea7n s\u1ed1 tr\u1ef1c quan v\u00e0 b\u1ea3ng h\u00e0i \u0111\u1ea7y \u0111\u1ee7<\/p>\n<div id=\"resultsArea\">\n<div class=\"results-empty\">\n            <span class=\"icon\">\ud83d\udcc8<\/span><br \/>\n            Nh\u1eadp t\u1ed1c \u0111\u1ed9 tr\u1ee5c v\u00e0 nh\u1ea5n T\u00ednh to\u00e1n.<br \/>\u0111\u1ec3 xem c\u00e1c t\u1ea7n s\u1ed1 h\u00e0i\n          <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<p><!-- DIAGNOSTIC CARDS + TABLES --><\/p>\n<section class=\"diagnostic-section\" id=\"diagnostic-cards\">\n<div class=\"container\">\n<div class=\"section-header\">\n<h2>C\u00e1c m\u1eabu d\u1ea5u hi\u1ec7u l\u1ed7i \u2014 Nh\u1eadn d\u1ea1ng nhanh<\/h2>\n<p>M\u1ed7i l\u1ed7i m\u00e1y m\u00f3c t\u1ea1o ra m\u1ed9t m\u1eabu s\u00f3ng h\u00e0i \u0111\u1eb7c tr\u01b0ng nh\u00ecn th\u1ea5y trong <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/spectrum\/\">ph\u1ed5 rung \u0111\u1ed9ng<\/a><\/p>\n<\/p><\/div>\n<div class=\"fault-cards\">\n<div class=\"fault-card unbalance\">\n<div class=\"fc-icon\">\u2696\ufe0f<\/div>\n<div class=\"fc-title\">M\u1ea5t c\u00e2n b\u1eb1ng<\/div>\n<div class=\"fc-pattern\">T\u00edn hi\u1ec7u tr\u1ed9i 1\u00d7 \u2014 s\u1ea1ch, \u0111\u1ec9nh \u0111\u01a1n<\/div>\n<div class=\"fc-body\"><strong>M\u1eabu:<\/strong> Th\u00e0nh ph\u1ea7n 1\u00d7 m\u1ea1nh v\u1edbi s\u00f3ng h\u00e0i t\u1ed1i thi\u1ec3u. Bi\u00ean \u0111\u1ed9 t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi t\u1ed1c \u0111\u1ed9\u00b2. Pha \u1ed5n \u0111\u1ecbnh v\u00e0 c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i. <strong>Ph\u01b0\u01a1ng h\u01b0\u1edbng:<\/strong> Ch\u1ee7 y\u1ebfu l\u00e0 dao \u0111\u1ed9ng h\u01b0\u1edbng t\u00e2m.<\/div>\n<div class=\"fc-spectrum\">\n<div class=\"bar\" style=\"height:95%;background:var(--blue)\"><span class=\"bar-label\">1\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:8%;background:var(--blue-pale)\"><span class=\"bar-label\">2\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:3%;background:var(--blue-pale)\"><span class=\"bar-label\">3\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:2%;background:var(--blue-pale)\"><span class=\"bar-label\">4\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:1%;background:var(--blue-pale)\"><span class=\"bar-label\">5\u00d7<\/span><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"fault-card misalignment\">\n<div class=\"fc-icon\">\u2194\ufe0f<\/div>\n<div class=\"fc-title\">S\u1ef1 kh\u00f4ng th\u1eb3ng h\u00e0ng<\/div>\n<div class=\"fc-pattern\">Th\u00e0nh ph\u1ea7n 2\u00d7 (v\u00e0 3\u00d7) m\u1ea1nh so v\u1edbi 1\u00d7<\/div>\n<div class=\"fc-body\"><strong>Angular:<\/strong> Rung \u0111\u1ed9ng d\u1ecdc tr\u1ee5c cao 1\u00d7. <strong>Song song:<\/strong> Bi\u00ean \u0111\u1ed9 xuy\u00ean t\u00e2m 2\u00d7 cao, th\u01b0\u1eddng \u2265 bi\u00ean \u0111\u1ed9 1\u00d7. Tr\u01b0\u1eddng h\u1ee3p nghi\u00eam tr\u1ecdng xu\u1ea5t hi\u1ec7n th\u00eam 3\u00d7, 4\u00d7. <strong>Ch\u00fa gi\u1ea3i:<\/strong> \u0110\u1ed9 rung d\u1ecdc tr\u1ee5c cao t\u1ea1i kh\u1edbp n\u1ed1i.<\/div>\n<div class=\"fc-spectrum\">\n<div class=\"bar\" style=\"height:60%;background:var(--warning)\"><span class=\"bar-label\">1\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:90%;background:var(--warning)\"><span class=\"bar-label\">2\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:40%;background:var(--warning-light)\"><span class=\"bar-label\">3\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:15%;background:var(--warning-light)\"><span class=\"bar-label\">4\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:5%;background:var(--warning-light)\"><span class=\"bar-label\">5\u00d7<\/span><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"fault-card looseness\">\n<div class=\"fc-icon\">\ud83d\udd29<\/div>\n<div class=\"fc-title\">\u0110\u1ed9 l\u1ecfng c\u01a1 h\u1ecdc<\/div>\n<div class=\"fc-pattern\">Nhi\u1ec1u s\u00f3ng h\u00e0i: 1\u00d7, 2\u00d7, 3\u00d7, 4\u00d7\u2026 \u0111\u1ebfn 10\u00d7+<\/div>\n<div class=\"fc-body\"><strong>M\u1eabu:<\/strong> H\u1ec7 th\u1ed1ng s\u00f3ng h\u00e0i phong ph\u00fa, th\u01b0\u1eddng c\u00f3 c\u00e1c s\u00f3ng h\u00e0i ph\u1ee5 (\u00bd\u00d7, \u2153\u00d7). Pha kh\u00f4ng \u1ed5n \u0111\u1ecbnh. C\u00e0ng nhi\u1ec1u s\u00f3ng h\u00e0i = \u0111\u1ed9 l\u1ecfng l\u1ebbo c\u00e0ng nghi\u00eam tr\u1ecdng. <strong>Ch\u1ec9 s\u1ed1 ch\u00ednh:<\/strong> C\u00f3 s\u00f3ng h\u00e0i ph\u1ee5.<\/div>\n<div class=\"fc-spectrum\">\n<div class=\"bar\" style=\"height:70%;background:var(--danger)\"><span class=\"bar-label\">1\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:55%;background:var(--danger)\"><span class=\"bar-label\">2\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:50%;background:var(--danger)\"><span class=\"bar-label\">3\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:40%;background:var(--danger)\"><span class=\"bar-label\">4\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:35%;background:var(--danger-light)\"><span class=\"bar-label\">5\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:25%;background:var(--danger-light)\"><span class=\"bar-label\">6\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:20%;background:var(--danger-light)\"><span class=\"bar-label\">7\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:12%;background:var(--danger-light)\"><span class=\"bar-label\">8\u00d7<\/span><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"fault-card bearing\">\n<div class=\"fc-icon\">\ud83d\udd34<\/div>\n<div class=\"fc-title\">L\u1ed7i \u1ed5 tr\u1ee5c<\/div>\n<div class=\"fc-pattern\">C\u00e1c \u0111\u1ec9nh kh\u00f4ng \u0111\u1ed3ng b\u1ed9: BPFO, BPFI + s\u00f3ng h\u00e0i<\/div>\n<div class=\"fc-body\"><strong>M\u1eabu:<\/strong> \u0110\u1ec9nh t\u1ea1i <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/bearing-fault-frequencies\/\" style=\"color:var(--success)\">t\u1ea7n s\u1ed1 l\u1ed7i \u1ed5 tr\u1ee5c<\/a> (kh\u00f4ng ph\u1ea3i b\u1ed9i s\u1ed1 nguy\u00ean c\u1ee7a RPM). S\u00f3ng h\u00e0i c\u1ee7a t\u1ea7n s\u1ed1 l\u1ed7i + <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/sidebands\/\" style=\"color:var(--success)\">d\u1ea3i b\u00ean<\/a> c\u00e1ch nhau 1\u00d7.<\/div>\n<div class=\"fc-spectrum\">\n<div class=\"bar\" style=\"height:30%;background:var(--success)\"><span class=\"bar-label\">1\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:5%;background:#ddd\"><span class=\"bar-label\"><\/span><\/div>\n<div class=\"bar\" style=\"height:75%;background:var(--success)\"><span class=\"bar-label\">BPFO<\/span><\/div>\n<div class=\"bar\" style=\"height:45%;background:var(--success-light)\"><span class=\"bar-label\">2\u00b7BPF<\/span><\/div>\n<div class=\"bar\" style=\"height:25%;background:var(--success-light)\"><span class=\"bar-label\">3\u00b7BPF<\/span><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"fault-card electrical\">\n<div class=\"fc-icon\">\u26a1<\/div>\n<div class=\"fc-title\">L\u1ed7i \u0111i\u1ec7n<\/div>\n<div class=\"fc-pattern\">T\u1ea7n s\u1ed1 l\u01b0\u1edbi \u0111i\u1ec7n g\u1ea5p 2 l\u1ea7n (2FL) \u00b1 d\u1ea3i bi\u00ean tr\u01b0\u1ee3t<\/div>\n<div class=\"fc-body\"><strong>Stato:<\/strong> T\u1ea7n s\u1ed1 2FL (100\/120 Hz) chi\u1ebfm \u01b0u th\u1ebf. <strong>Thanh r\u00f4to:<\/strong> 1\u00d7 v\u1edbi c\u00e1c d\u1ea3i b\u00ean t\u1ea1i <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/pole-pass-frequency\/\" style=\"color:var(--purple)\">t\u1ea7n s\u1ed1 v\u01b0\u1ee3t c\u1ef1c<\/a>. <strong>Ki\u1ec3m tra:<\/strong> M\u1ea5t \u0111i\u1ec7n \u2014 \u0111\u1ed9 rung \u0111i\u1ec7n gi\u1ea3m ngay l\u1eadp t\u1ee9c.<\/div>\n<div class=\"fc-spectrum\">\n<div class=\"bar\" style=\"height:50%;background:var(--purple)\"><span class=\"bar-label\">1\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:85%;background:var(--purple)\"><span class=\"bar-label\">2FL<\/span><\/div>\n<div class=\"bar\" style=\"height:30%;background:var(--purple-light)\"><span class=\"bar-label\">4FL<\/span><\/div>\n<div class=\"bar\" style=\"height:15%;background:var(--purple-light)\"><span class=\"bar-label\">6FL<\/span><\/div>\n<div class=\"bar\" style=\"height:5%;background:var(--purple-light)\"><span class=\"bar-label\">8FL<\/span><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"fault-card rub\">\n<div class=\"fc-icon\">\ud83d\udd25<\/div>\n<div class=\"fc-title\">Ma s\u00e1t tr\u1ee5c<\/div>\n<div class=\"fc-pattern\">Nhi\u1ec1u s\u00f3ng h\u00e0i b\u1eadc cao + s\u00f3ng h\u00e0i h\u1ea1 b\u1eadc<\/div>\n<div class=\"fc-body\"><strong>Ch\u00e0 nh\u1eb9:<\/strong> \u00bd\u00d7, 1\u00d7, v\u00e0 nhi\u1ec1u b\u1ed9i s\u1ed1 c\u1ee7a n\u00f3 l\u00ean \u0111\u1ebfn 10\u00d7+. <strong>C\u1ecd x\u00e1t v\u00f2ng to\u00e0n ph\u1ea7n:<\/strong> C\u00e1c s\u00f3ng h\u00e0i b\u1eadc th\u1ea5p (\u00bd\u00d7, \u2153\u00d7, \u00bc\u00d7) chi\u1ebfm \u01b0u th\u1ebf. Hi\u1ec7n t\u01b0\u1ee3ng u\u1ed1n cong do nhi\u1ec7t c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 d\u1ecbch chuy\u1ec3n c\u1ee7a vect\u01a1 1\u00d7.<\/div>\n<div class=\"fc-spectrum\">\n<div class=\"bar\" style=\"height:35%;background:#ec4899\"><span class=\"bar-label\">\u00bd\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:65%;background:#ec4899\"><span class=\"bar-label\">1\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:40%;background:#ec4899\"><span class=\"bar-label\">2\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:30%;background:#fbcfe8\"><span class=\"bar-label\">3\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:25%;background:#fbcfe8\"><span class=\"bar-label\">4\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:20%;background:#fbcfe8\"><span class=\"bar-label\">5\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:15%;background:#fbcfe8\"><span class=\"bar-label\">6\u00d7<\/span><\/div>\n<div class=\"bar\" style=\"height:12%;background:#fbcfe8\"><span class=\"bar-label\">7\u00d7<\/span><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p>    <!-- MASTER DIAGNOSTIC TABLE --><\/p>\n<div class=\"table-wrap\" id=\"diagnostic-table\">\n<div class=\"table-title\">\ud83d\udccb T\u00e0i li\u1ec7u tham kh\u1ea3o ch\u1ea9n \u0111o\u00e1n m\u1eabu h\u00e0i ho\u00e0n ch\u1ec9nh<\/div>\n<table>\n<thead>\n<tr>\n<th>T\u00ecnh tr\u1ea1ng l\u1ed7i<\/th>\n<th>\u00c2m b\u1ed9i ch\u1ee7 \u0111\u1ea1o<\/th>\n<th>M\u1eabu bi\u00ean \u0111\u1ed9<\/th>\n<th>Ph\u01b0\u01a1ng h\u01b0\u1edbng<\/th>\n<th>H\u00e0nh vi pha<\/th>\n<th>\u0110\u1eb7c \u0111i\u1ec3m n\u1ed5i b\u1eadt<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>M\u1ea5t c\u00e2n b\u1eb1ng kh\u1ed1i l\u01b0\u1ee3ng<\/td>\n<td class=\"mono\">1\u00d7<\/td>\n<td>1\u00d7 \u226b t\u1ea5t c\u1ea3 nh\u1eefng c\u00e1i kh\u00e1c<\/td>\n<td>Xuy\u00ean t\u00e2m<\/td>\n<td>\u1ed4n \u0111\u1ecbnh; theo sau \u0111i\u1ec3m n\u1eb7ng<\/td>\n<td>\u0110\u1ec9nh \u0111\u01a1n s\u1ea1ch; t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi t\u1ed1c \u0111\u1ed9\u00b2<\/td>\n<\/tr>\n<tr>\n<td>Tr\u1ee5c cong<\/td>\n<td class=\"mono\">1\u00d7 + 2\u00d7<\/td>\n<td>C\u1ea3 hai \u0111\u1ec1u cao<\/td>\n<td>Tr\u1ee5c + Xuy\u00ean t\u00e2m<\/td>\n<td>1\u00d7 pha 180\u00b0 gi\u1eefa hai \u0111\u1ea7u (tr\u1ee5c)<\/td>\n<td>Rung \u0111\u1ed9ng d\u1ecdc tr\u1ee5c cao 1\u00d7; kh\u00f4ng th\u1ec3 kh\u1eafc ph\u1ee5c b\u1eb1ng c\u00e2n b\u1eb1ng<\/td>\n<\/tr>\n<tr>\n<td>S\u1ef1 l\u1ec7ch g\u00f3c<\/td>\n<td class=\"mono\">1\u00d7 (tr\u1ee5c)<\/td>\n<td>Rung \u0111\u1ed9ng d\u1ecdc tr\u1ee5c cao 1\u00d7 t\u1ea1i kh\u1edbp n\u1ed1i<\/td>\n<td>\u01afu th\u1ebf tr\u1ee5c<\/td>\n<td>180\u00b0 qua kh\u1edbp n\u1ed1i (h\u01b0\u1edbng tr\u1ee5c)<\/td>\n<td>Tr\u1ee5c 1\u00d7 t\u1ea1i kh\u1edbp n\u1ed1i &gt; xuy\u00ean t\u00e2m<\/td>\n<\/tr>\n<tr>\n<td>S\u1ef1 l\u1ec7ch song song<\/td>\n<td class=\"mono\">2\u00d7 (h\u01b0\u1edbng t\u00e2m)<\/td>\n<td>2\u00d7 \u2248 ho\u1eb7c &gt; 1\u00d7; 3\u00d7 c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n<\/td>\n<td>\u01afu th\u1ebf h\u01b0\u1edbng t\u00e2m<\/td>\n<td>180\u00b0 qua kh\u1edbp n\u1ed1i (h\u01b0\u1edbng t\u00e2m)<\/td>\n<td>T\u1ef7 l\u1ec7 2\u00d7 tr\u00ean 1\u00d7 l\u00e0 d\u1ea5u hi\u1ec7u ch\u1ea9n \u0111o\u00e1n.<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 l\u1ecfng \u2014 k\u1ebft c\u1ea5u (Lo\u1ea1i A)<\/td>\n<td class=\"mono\">1\u00d7<\/td>\n<td>Theo h\u01b0\u1edbng \u2014 cao h\u01a1n theo h\u01b0\u1edbng l\u1ecfng l\u1ebbo<\/td>\n<td>\u0110\u1ecbnh h\u01b0\u1edbng<\/td>\n<td>Kh\u00f4ng \u1ed5n \u0111\u1ecbnh; c\u00f3 th\u1ec3 lang thang<\/td>\n<td>Bi\u00ean \u0111\u1ed9 thay \u0111\u1ed5i theo m\u00f4-men xo\u1eafn c\u1ee7a bu l\u00f4ng<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 l\u1ecfng \u2013 xoay (Lo\u1ea1i B)<\/td>\n<td class=\"mono\">1\u00d7, 2\u00d7, 3\u00d7\u2026n\u00d7<\/td>\n<td>Chu\u1ed7i s\u00f3ng h\u00e0i phong ph\u00fa + \u00bd\u00d7<\/td>\n<td>Xuy\u00ean t\u00e2m<\/td>\n<td>Kh\u00f4ng \u1ed5n \u0111\u1ecbnh; th\u1ea5t th\u01b0\u1eddng<\/td>\n<td>C\u00e1c s\u00f3ng h\u00e0i b\u1eadc th\u1ea5p (\u00bd\u00d7, \u2153\u00d7) l\u00e0 y\u1ebfu t\u1ed1 ph\u00e2n bi\u1ec7t quan tr\u1ecdng.<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 l\u1ecfng \u2014 \u0111\u1ebf \u1ed5 tr\u1ee5c (Lo\u1ea1i C)<\/td>\n<td class=\"mono\">Nhi\u1ec1u s\u00f3ng h\u00e0i + s\u00f3ng h\u00e0i h\u1ea1 b\u1eadc<\/td>\n<td>M\u1ee9c s\u00e0n nhi\u1ec5u t\u0103ng v\u1edbi nhi\u1ec1u \u0111\u1ec9nh<\/td>\n<td>Xuy\u00ean t\u00e2m<\/td>\n<td>R\u1ea5t kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/td>\n<td>N\u00e2ng cao m\u1ee9c nhi\u1ec5u n\u1ec1n b\u0103ng th\u00f4ng r\u1ed9ng<\/td>\n<\/tr>\n<tr>\n<td>Ch\u00e2n m\u1ec1m<\/td>\n<td class=\"mono\">1\u00d7 + 2\u00d7<\/td>\n<td>1\u00d7 thay \u0111\u1ed5i theo m\u00f4-men xo\u1eafn bu l\u00f4ng<\/td>\n<td>Chi\u1ebfm \u01b0u th\u1ebf theo chi\u1ec1u \u0111\u1ee9ng<\/td>\n<td>S\u1ef1 d\u1ecbch chuy\u1ec3n khi si\u1ebft ch\u1eb7t bu l\u00f4ng<\/td>\n<td>Bi\u00ean \u0111\u1ed9 dao \u0111\u1ed9ng 1\u00d7 thay \u0111\u1ed5i khi n\u1edbi l\u1ecfng t\u1eebng bu l\u00f4ng ri\u00eang l\u1ebb<\/td>\n<\/tr>\n<tr>\n<td>Ma s\u00e1t r\u00f4to (nh\u1eb9, m\u1ed9t ph\u1ea7n)<\/td>\n<td class=\"mono\">\u00bd\u00d7, 1\u00d7, 2\u00d7\u2026n\u00d7<\/td>\n<td>Nhi\u1ec1u s\u00f3ng h\u00e0i b\u1eadc cao<\/td>\n<td>Xuy\u00ean t\u00e2m<\/td>\n<td>Th\u1ea5t th\u01b0\u1eddng; tr\u00f4i d\u1ea1t nhi\u1ec7t<\/td>\n<td>S\u00f3ng h\u00e0i b\u1eadc th\u1ea5p \u00bd\u00d7 v\u00e0 \u2153\u00d7; s\u1ef1 tr\u00f4i d\u1ea1t vect\u01a1 nhi\u1ec7t<\/td>\n<\/tr>\n<tr>\n<td>Ma s\u00e1t r\u00f4to (v\u00f2ng tr\u00f2n \u0111\u1ea7y \u0111\u1ee7)<\/td>\n<td class=\"mono\">\u00bd\u00d7, \u2153\u00d7, \u00bc\u00d7 tr\u1ed9i<\/td>\n<td>S\u00f3ng h\u00e0i b\u1eadc d\u01b0\u1edbi &gt; 1\u00d7<\/td>\n<td>Xuy\u00ean t\u00e2m<\/td>\n<td>H\u1ed7n lo\u1ea1n<\/td>\n<td>S\u1ef1 chi ph\u1ed1i d\u01b0\u1edbi \u0111\u1ed3ng b\u1ed9; s\u1ef1 ti\u1ebfn \u0111\u1ed9ng ng\u01b0\u1ee3c<\/td>\n<\/tr>\n<tr>\n<td>D\u1ea7u xo\u00e1y<\/td>\n<td class=\"mono\">0,42\u20130,48\u00d7<\/td>\n<td>\u0110\u1ec9nh d\u01b0\u1edbi \u0111\u1ed3ng b\u1ed9 ngay d\u01b0\u1edbi \u00bd\u00d7<\/td>\n<td>Xuy\u00ean t\u00e2m<\/td>\n<td>Ti\u1ebfn \u0111\u1ed9ng thu\u1eadn<\/td>\n<td>T\u1ea7n s\u1ed1 dao \u0111\u1ed9ng \u1edf m\u1ee9c ~0,43\u00d7 RPM; ph\u1ee5 thu\u1ed9c v\u00e0o t\u1ed1c \u0111\u1ed9<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u00e1nh b\u1eb1ng d\u1ea7u<\/td>\n<td class=\"mono\">\u2248 m\u1ee9c t\u1edbi h\u1ea1n th\u1ee9 nh\u1ea5t<\/td>\n<td>B\u1ecb kh\u00f3a \u1edf t\u1ed1c \u0111\u1ed9 t\u1edbi h\u1ea1n th\u1ee9 nh\u1ea5t b\u1ea5t k\u1ec3 t\u1ed1c \u0111\u1ed9<\/td>\n<td>Xuy\u00ean t\u00e2m<\/td>\n<td>Ti\u1ebfn \u0111\u1ed9ng thu\u1eadn<\/td>\n<td>Hi\u1ec7n t\u01b0\u1ee3ng kh\u00f3a t\u1ea7n s\u1ed1; h\u1eadu qu\u1ea3 nghi\u00eam tr\u1ecdng n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c kh\u1eafc ph\u1ee5c.<\/td>\n<\/tr>\n<tr>\n<td>\u0103n kh\u1edbp b\u00e1nh r\u0103ng<\/td>\n<td class=\"mono\">GMF, 2\u00d7GMF, 3\u00d7GMF<\/td>\n<td>GMF = s\u1ed1 r\u0103ng \u00d7 RPM + d\u1ea3i t\u1ea7n ph\u1ee5<\/td>\n<td>H\u01b0\u1edbng t\u00e2m + H\u01b0\u1edbng tr\u1ee5c<\/td>\n<td>Kh\u00f4ng \u00e1p d\u1ee5ng (b\u1eaft bu\u1ed9c)<\/td>\n<td>C\u00e1c d\u1ea3i t\u1ea7n ph\u1ee5 \u1edf t\u1ed1c \u0111\u1ed9 tr\u1ee5c cho th\u1ea5y b\u00e1nh r\u0103ng b\u1ecb h\u1ecfng.<\/td>\n<\/tr>\n<tr>\n<td>L\u01b0\u1ee1i\/c\u00e1nh \u0111i qua<\/td>\n<td class=\"mono\">BPF, 2\u00d7BPF<\/td>\n<td>BPF = s\u1ed1 c\u00e1nh qu\u1ea1t \u00d7 s\u1ed1 v\u00f2ng quay\/ph\u00fat<\/td>\n<td>H\u01b0\u1edbng t\u00e2m + H\u01b0\u1edbng tr\u1ee5c<\/td>\n<td>Kh\u00f4ng \u00e1p d\u1ee5ng (b\u1eaft bu\u1ed9c)<\/td>\n<td>B\u00ecnh th\u01b0\u1eddng; bi\u00ean \u0111\u1ed9 cao = v\u1ea5n \u0111\u1ec1 v\u1ec1 khe h\u1edf ho\u1eb7c c\u1ed9ng h\u01b0\u1edfng<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 l\u1ec7ch t\u00e2m stato<\/td>\n<td class=\"mono\">2FL (100\/120 Hz)<\/td>\n<td>T\u1ea7n s\u1ed1 \u0111\u01b0\u1eddng d\u00e2y 2\u00d7 chi\u1ebfm \u01b0u th\u1ebf<\/td>\n<td>Xuy\u00ean t\u00e2m<\/td>\n<td>Kh\u00f4ng \u00e1p d\u1ee5ng<\/td>\n<td>Bi\u1ebfn m\u1ea5t ngay l\u1eadp t\u1ee9c khi m\u1ea5t \u0111i\u1ec7n<\/td>\n<\/tr>\n<tr>\n<td>L\u1ed7i thanh r\u00f4to<\/td>\n<td class=\"mono\">1\u00d7 v\u1edbi c\u00e1c d\u1ea3i t\u1ea7n ph\u1ee5 truy\u1ec1n qua c\u1ef1c<\/td>\n<td>D\u1ea3i t\u1ea7n ph\u1ee5 t\u1ea1i t\u1ea7n s\u1ed1 tr\u01b0\u1ee3t \u00d7 c\u1ef1c<\/td>\n<td>Xuy\u00ean t\u00e2m<\/td>\n<td>\u0110\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ebf<\/td>\n<td>Ph\u00f3ng to \u1edf m\u1ee9c 1\u00d7 s\u1ebd th\u1ea5y c\u00e1c d\u1ea3i t\u1ea7n ph\u1ee5 \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 \u0111\u1ec1u.<\/td>\n<\/tr>\n<tr>\n<td>Do VFD g\u00e2y ra<\/td>\n<td class=\"mono\">S\u00f3ng h\u00e0i t\u1ea7n s\u1ed1 chuy\u1ec3n m\u1ea1ch<\/td>\n<td>C\u00e1c \u0111\u1ec9nh kh\u00f4ng \u0111\u1ed3ng b\u1ed9 \u1edf t\u1ea7n s\u1ed1 PWM<\/td>\n<td>Xuy\u00ean t\u00e2m<\/td>\n<td>Kh\u00f4ng \u00e1p d\u1ee5ng<\/td>\n<td>T\u1ea7n s\u1ed1 kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o t\u1ed1c \u0111\u1ed9 tr\u1ee5c<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<p>    <!-- SUB-HARMONIC TABLE --><\/p>\n<div class=\"table-wrap\">\n<div class=\"table-title\">\u3030\ufe0f Tham chi\u1ebfu h\u1ea1 h\u00e0i v\u00e0 h\u00e0i ph\u00e2n s\u1ed1<\/div>\n<table>\n<thead>\n<tr>\n<th>T\u1ea7n s\u1ed1<\/th>\n<th>Ch\u1ec9 \u0111\u1ecbnh<\/th>\n<th>Nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn<\/th>\n<th>M\u1ee9c \u0111\u1ed9 nghi\u00eam tr\u1ecdng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td class=\"mono\">0,42\u20130,48\u00d7<\/td>\n<td>D\u1ea7u xo\u00e1y<\/td>\n<td>T\u1ea3i tr\u1ecdng \u1ed5 tr\u1ee5c kh\u00f4ng \u0111\u1ee7; khe h\u1edf qu\u00e1 l\u1edbn; tr\u1ee5c nh\u1eb9<\/td>\n<td><span class=\"tag high\">Nghi\u00eam tr\u1ecdng \u2014 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng v\u00fat d\u1ea7u.<\/span><\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">\u00bd\u00d7 (0,50\u00d7)<\/td>\n<td>N\u1eeda ph\u1ea7n<\/td>\n<td>C\u1ecd x\u00e1t, l\u1ecfng l\u1ebbo (Lo\u1ea1i B\/C), tr\u1ee5c b\u1ecb n\u1ee9t (hi\u1ebfm g\u1eb7p), c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 d\u00e2y \u0111ai<\/td>\n<td><span class=\"tag high\">Nghi\u00eam tr\u1ecdng \u2014 c\u1ea7n \u0111i\u1ec1u tra ngay l\u1eadp t\u1ee9c.<\/span><\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">\u2153\u00d7 (0,33\u00d7)<\/td>\n<td>B\u1ed9 con b\u1eadc ba<\/td>\n<td>C\u1ecd x\u00e1t v\u00f2ng to\u00e0n ph\u1ea7n; l\u1ecfng l\u1ebbo nghi\u00eam tr\u1ecdng; m\u1ea5t \u1ed5n \u0111\u1ecbnh do ch\u1ea5t l\u1ecfng<\/td>\n<td><span class=\"tag high\">Nghi\u00eam tr\u1ecdng \u2014 T\u00ecnh tr\u1ea1ng nguy hi\u1ec3m<\/span><\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">\u00bc\u00d7 (0,25\u00d7)<\/td>\n<td>Th\u00e0nh ph\u1ea7n ph\u1ee5 b\u1eadc 1\/4<\/td>\n<td>C\u1ecd x\u00e1t to\u00e0n b\u1ed9 v\u1edbi qu\u1ef9 \u0111\u1ea1o b\u1ecb kh\u00f3a; \u0111\u1ed9 l\u1ecfng c\u1ef1c cao<\/td>\n<td><span class=\"tag high\">R\u1ea5t nghi\u00eam tr\u1ecdng \u2014 c\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i t\u1eaft m\u00e1y.<\/span><\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">1,5\u00d7 (3\/2\u00d7)<\/td>\n<td>\u0110\u01a1n h\u00e0ng 3\/2<\/td>\n<td>L\u1ed1c xo\u00e1y d\u1ea7u k\u1ebft h\u1ee3p v\u1edbi s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng<\/td>\n<td><span class=\"tag medium\">Theo d\u00f5i s\u00e1t sao<\/span><\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">2,5\u00d7, 3,5\u00d7\u2026<\/td>\n<td>H\u1ecd n\u1eeda b\u1eadc<\/td>\n<td>\u0110\u1ed9 l\u1ecfng v\u1edbi th\u00e0nh ph\u1ea7n ma s\u00e1t m\u1ea1nh<\/td>\n<td><span class=\"tag medium\">C\u01a1 ch\u1ebf l\u1ed7i k\u1ebft h\u1ee3p<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<\/section>\n<p><!-- MAIN ARTICLE CONTENT --><br \/>\n<main class=\"main-content\" id=\"definition\"><\/p>\n<div class=\"container\">\n<div class=\"content-layout\">\n<article class=\"article-content\">\n<h2>\u0110\u1ecbnh ngh\u0129a: S\u00f3ng h\u00e0i l\u00e0 g\u00ec?<\/h2>\n<p>Trong ph\u00e2n t\u00edch rung \u0111\u1ed9ng, m\u1ed9t <strong>s\u00f3ng h\u00e0i<\/strong> l\u00e0 t\u1ea7n s\u1ed1 l\u00e0 b\u1ed9i s\u1ed1 nguy\u00ean ch\u00ednh x\u00e1c c\u1ee7a t\u1ea7n s\u1ed1 c\u01a1 b\u1ea3n. Trong m\u00e1y m\u00f3c quay, t\u1ea7n s\u1ed1 c\u01a1 b\u1ea3n th\u01b0\u1eddng l\u00e0 t\u1ed1c \u0111\u1ed9 quay c\u1ee7a tr\u1ee5c, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 s\u00f3ng h\u00e0i b\u1eadc 1 ho\u1eb7c <strong>1\u00d7<\/strong>. C\u00e1c s\u00f3ng h\u00e0i ti\u1ebfp theo l\u00e0 b\u1ed9i s\u1ed1 nguy\u00ean: 2\u00d7 (g\u1ea5p \u0111\u00f4i t\u1ed1c \u0111\u1ed9 tr\u1ee5c), 3\u00d7 (g\u1ea5p ba), v.v. C\u00e1c t\u1ea7n s\u1ed1 n\u00e0y c\u0169ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <em>b\u1eadc<\/em> t\u1ed1c \u0111\u1ed9 ch\u1ea1y, ho\u1eb7c <em>s\u00f3ng h\u00e0i \u0111\u1ed3ng b\u1ed9<\/em> B\u1edfi v\u00ec ch\u00fang \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9 h\u00f3a ch\u00ednh x\u00e1c v\u1edbi s\u1ef1 quay c\u1ee7a tr\u1ee5c.<\/p>\n<p>V\u00ed d\u1ee5, n\u1ebfu m\u1ed9t \u0111\u1ed9ng c\u01a1 ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ed1c \u0111\u1ed9 1.800 v\u00f2ng\/ph\u00fat (30 Hz), c\u00e1c s\u00f3ng h\u00e0i c\u1ee7a n\u00f3 s\u1ebd xu\u1ea5t hi\u1ec7n \u1edf c\u00e1c t\u1ea7n s\u1ed1 60 Hz (2\u00d7), 90 Hz (3\u00d7), 120 Hz (4\u00d7), 150 Hz (5\u00d7), v.v. V\u1ec1 l\u00fd thuy\u1ebft, chu\u1ed7i s\u00f3ng h\u00e0i l\u00e0 v\u00f4 h\u1ea1n, nh\u01b0ng tr\u00ean th\u1ef1c t\u1ebf, bi\u00ean \u0111\u1ed9 gi\u1ea3m d\u1ea7n \u1edf c\u00e1c b\u1eadc cao h\u01a1n v\u00e0 ch\u1ec9 m\u1ed9t v\u00e0i s\u00f3ng h\u00e0i \u0111\u1ea7u ti\u00ean mang th\u00f4ng tin ch\u1ea9n \u0111o\u00e1n.<\/p>\n<div class=\"formula-box\">\n<div class=\"formula-label\">\u0110\u1ecbnh ngh\u0129a t\u1ea7n s\u1ed1 h\u00e0i<\/div>\n<div class=\"formula-main\">f<sub>N<\/sub> = n \u00d7 f<sub>1<\/sub> = n \u00d7 (v\u00f2ng\/ph\u00fat \/ 60)<\/div>\n<div class=\"formula-note\">trong \u0111\u00f3 n = 1, 2, 3, 4\u2026 (b\u1eadc h\u00e0i) v\u00e0 f\u2081 = t\u1ea7n s\u1ed1 quay c\u1ee7a tr\u1ee5c t\u00ednh b\u1eb1ng Hz<\/div>\n<\/p><\/div>\n<div class=\"info-box\">\n<div class=\"box-title\">S\u00f3ng h\u00e0i so v\u1edbi s\u00f3ng h\u1ea1 h\u00e0i so v\u1edbi c\u00e1c \u0111\u1ec9nh kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/div>\n<p><strong>S\u00f3ng h\u00e0i<\/strong> l\u00e0 b\u1ed9i s\u1ed1 nguy\u00ean c\u1ee7a t\u1ed1c \u0111\u1ed9 tr\u1ee5c (2\u00d7, 3\u00d7, 4\u00d7\u2026). <strong>H\u1ea1 h\u00e0i<\/strong> l\u00e0 b\u1ed9i s\u1ed1 ph\u00e2n s\u1ed1 (\u00bd\u00d7, \u2153\u00d7, \u00bc\u00d7) v\u00e0 lu\u00f4n cho th\u1ea5y c\u00e1c v\u1ea5n \u0111\u1ec1 c\u01a1 kh\u00ed nghi\u00eam tr\u1ecdng. <strong>C\u00e1c \u0111\u1ec9nh kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/strong> l\u00e0 c\u00e1c t\u1ea7n s\u1ed1 kh\u00f4ng li\u00ean quan \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 tr\u1ee5c \u2014 ch\u1eb3ng h\u1ea1n nh\u01b0 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/bearing-fault-frequencies\/\">t\u1ea7n s\u1ed1 l\u1ed7i \u1ed5 tr\u1ee5c<\/a>, t\u1ea7n s\u1ed1 \u0103n kh\u1edbp b\u00e1nh r\u0103ng, t\u1ea7n s\u1ed1 \u0111\u01b0\u1eddng d\u00e2y (50\/60 Hz), ho\u1eb7c <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/natural-frequency\/\">t\u1ea7n s\u1ed1 t\u1ef1 nhi\u00ean<\/a> \u2014 v\u00e0 \u0111\u00f2i h\u1ecfi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ch\u1ea9n \u0111o\u00e1n kh\u00e1c nhau. \u0110\u1ec9nh \u1edf m\u1ee9c 3,57\u00d7 RPM KH\u00d4NG ph\u1ea3i l\u00e0 s\u00f3ng h\u00e0i; \u0111\u00f3 c\u00f3 th\u1ec3 l\u00e0 t\u1ea7n s\u1ed1 l\u1ed7i \u1ed5 bi.<\/p>\n<\/p><\/div>\n<h2 id=\"why-generated\">T\u1ea1i sao s\u00f3ng h\u00e0i \u0111\u01b0\u1ee3c t\u1ea1o ra?<\/h2>\n<p>Trong m\u1ed9t h\u1ec7 th\u1ed1ng tuy\u1ebfn t\u00ednh ho\u00e0n h\u1ea3o \u0111\u01b0\u1ee3c k\u00edch th\u00edch b\u1edfi m\u1ed9t l\u1ef1c h\u00ecnh sin thu\u1ea7n t\u00fay (ch\u1eb3ng h\u1ea1n nh\u01b0 m\u1ed9t r\u00f4to c\u00e2n b\u1eb1ng ho\u00e0n h\u1ea3o, \u0111\u01b0\u1ee3c c\u0103n ch\u1ec9nh ho\u00e0n h\u1ea3o trong c\u00e1c \u1ed5 tr\u1ee5c ho\u00e0n h\u1ea3o), ch\u1ec9 c\u00f3 s\u00f3ng h\u00e0i b\u1eadc 1 xu\u1ea5t hi\u1ec7n. M\u00e1y m\u00f3c th\u1ef1c t\u1ebf kh\u00f4ng bao gi\u1edd ho\u00e0n to\u00e0n tuy\u1ebfn t\u00ednh. C\u00e1c s\u00f3ng h\u00e0i xu\u1ea5t hi\u1ec7n b\u1ea5t c\u1ee9 khi n\u00e0o d\u1ea1ng s\u00f3ng dao \u0111\u1ed9ng b\u1ecb bi\u1ebfn d\u1ea1ng so v\u1edbi s\u00f3ng sin thu\u1ea7n t\u00fay \u2014 b\u1ea5t c\u1ee9 khi n\u00e0o ph\u1ea3n \u1ee9ng c\u1ee7a h\u1ec7 th\u1ed1ng b\u1ecb bi\u1ebfn d\u1ea1ng. <em>phi tuy\u1ebfn t\u00ednh<\/em> ho\u1eb7c ch\u00ednh h\u00e0m l\u1ef1c t\u00e1c \u0111\u1ed9ng kh\u00f4ng ph\u1ea3i l\u00e0 h\u00e0m h\u00ecnh sin.<\/p>\n<h3>To\u00e1n h\u1ecdc: \u0110\u1ecbnh l\u00fd Fourier<\/h3>\n<p><strong>\u0110\u1ecbnh l\u00fd Fourier<\/strong> \u0110\u1ecbnh l\u00fd n\u00e0y n\u00eau r\u00f5 r\u1eb1ng b\u1ea5t k\u1ef3 d\u1ea1ng s\u00f3ng tu\u1ea7n ho\u00e0n n\u00e0o \u2014 d\u00f9 ph\u1ee9c t\u1ea1p \u0111\u1ebfn \u0111\u00e2u \u2014 \u0111\u1ec1u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch th\u00e0nh t\u1ed5ng c\u1ee7a c\u00e1c s\u00f3ng sin \u1edf t\u1ea7n s\u1ed1 c\u01a1 b\u1ea3n v\u00e0 b\u1ed9i s\u1ed1 nguy\u00ean c\u1ee7a n\u00f3, m\u1ed7i s\u00f3ng c\u00f3 bi\u00ean \u0111\u1ed9 v\u00e0 pha x\u00e1c \u0111\u1ecbnh. Thu\u1eadt to\u00e1n FFT (Bi\u1ebfn \u0111\u1ed5i Fourier nhanh) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1edfi c\u00e1c m\u00e1y ph\u00e2n t\u00edch rung \u0111\u1ed9ng th\u1ef1c hi\u1ec7n ph\u00e9p ph\u00e2n t\u00edch n\u00e0y b\u1eb1ng m\u00e1y t\u00ednh, hi\u1ec3n th\u1ecb th\u00e0nh ph\u1ea7n h\u00e0i c\u1ee7a t\u00edn hi\u1ec7u.<\/p>\n<p>S\u00f3ng sin thu\u1ea7n t\u00fay ch\u1ec9 c\u00f3 m\u1ed9t th\u00e0nh ph\u1ea7n t\u1ea7n s\u1ed1 duy nh\u1ea5t. S\u00f3ng vu\u00f4ng ch\u1ee9a t\u1ea5t c\u1ea3 c\u00e1c s\u00f3ng h\u00e0i l\u1ebb (1\u00d7, 3\u00d7, 5\u00d7, 7\u00d7\u2026) v\u1edbi bi\u00ean \u0111\u1ed9 gi\u1ea3m theo t\u1ef7 l\u1ec7 1\/n. S\u00f3ng r\u0103ng c\u01b0a ch\u1ee9a t\u1ea5t c\u1ea3 c\u00e1c s\u00f3ng h\u00e0i v\u1edbi bi\u00ean \u0111\u1ed9 gi\u1ea3m theo t\u1ef7 l\u1ec7 1\/n. H\u00ecnh d\u1ea1ng c\u1ee5 th\u1ec3 c\u1ee7a s\u1ef1 bi\u1ebfn d\u1ea1ng quy\u1ebft \u0111\u1ecbnh c\u00e1c s\u00f3ng h\u00e0i n\u00e0o xu\u1ea5t hi\u1ec7n \u2014 \u0111\u00e2y ch\u00ednh l\u00e0 \u0111i\u1ec1u l\u00e0m cho ph\u00e2n t\u00edch s\u00f3ng h\u00e0i tr\u1edf n\u00ean m\u1ea1nh m\u1ebd trong vi\u1ec7c ch\u1ea9n \u0111o\u00e1n.<\/p>\n<h3>C\u00e1c c\u01a1 ch\u1ebf v\u1eadt l\u00fd t\u1ea1o ra s\u00f3ng h\u00e0i<\/h3>\n<ul>\n<li><strong>C\u1eaft\/ng\u1eaft d\u1ea1ng s\u00f3ng:<\/strong> Khi chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a tr\u1ee5c b\u1ecb h\u1ea1n ch\u1ebf v\u1ec1 m\u1eb7t v\u1eadt l\u00fd (v\u1ecf \u1ed5 tr\u1ee5c, ti\u1ebfp x\u00fac ma s\u00e1t), d\u1ea1ng s\u00f3ng thu \u0111\u01b0\u1ee3c s\u1ebd b\u1ecb c\u1eaft x\u00e9n, t\u1ea1o ra c\u00e1c s\u00f3ng h\u00e0i. S\u1ef1 c\u1eaft x\u00e9n c\u00e0ng nghi\u00eam tr\u1ecdng th\u00ec c\u00e0ng t\u1ea1o ra nhi\u1ec1u s\u00f3ng h\u00e0i h\u01a1n.<\/li>\n<li><strong>\u0110\u1ed9 c\u1ee9ng kh\u00f4ng \u0111\u1ed1i x\u1ee9ng:<\/strong> N\u1ebfu \u0111\u1ed9 c\u1ee9ng c\u1ee7a h\u1ec7 th\u1ed1ng kh\u00e1c nhau gi\u1eefa n\u1eeda d\u01b0\u01a1ng v\u00e0 n\u1eeda \u00e2m c\u1ee7a chu k\u1ef3 dao \u0111\u1ed9ng (tr\u1ee5c b\u1ecb n\u1ee9t \u0111\u00f3ng\/m\u1edf, l\u1ec7ch tr\u1ee5c t\u1ea1o ra \u0111\u1ed9 c\u1ee9ng k\u00e9o\/n\u00e9n kh\u00e1c nhau), th\u00ec s\u1ebd t\u1ea1o ra c\u00e1c s\u00f3ng h\u00e0i ch\u1eb5n (2\u00d7, 4\u00d7, 6\u00d7).<\/li>\n<li><strong>C\u00e1c s\u1ef1 ki\u1ec7n va \u0111\u1eadp:<\/strong> C\u00e1c t\u00e1c \u0111\u1ed9ng \u0111\u1ecbnh k\u1ef3 (\u1ed1c v\u00edt l\u1ecfng, t\u00e1c \u0111\u1ed9ng do l\u1ed7i \u1ed5 tr\u1ee5c) t\u1ea1o ra c\u00e1c d\u1ea1ng s\u00f3ng ng\u1eafn, s\u1eafc n\u00e9t, c\u1ef1c k\u1ef3 gi\u00e0u th\u00e0nh ph\u1ea7n h\u00e0i \u2014 gi\u1ed1ng nh\u01b0 c\u00e1ch d\u00f9i tr\u1ed1ng t\u1ea1o ra nhi\u1ec1u \u00e2m b\u1ed9i.<\/li>\n<li><strong>L\u1ef1c ph\u1ee5c h\u1ed3i phi tuy\u1ebfn t\u00ednh:<\/strong> Khi \u0111\u1ed9 c\u1ee9ng thay \u0111\u1ed5i theo \u0111\u1ed9 d\u1ecbch chuy\u1ec3n (\u1ed5 tr\u1ee5c ch\u1ecbu t\u1ea3i tr\u1ecdng thay \u0111\u1ed5i, g\u1ed1i \u0111\u1ee1 cao su c\u00f3 \u0111\u1ed9 c\u1ee9ng t\u0103ng d\u1ea7n), ph\u1ea3n \u1ee9ng v\u1edbi l\u1ef1c h\u00ecnh sin s\u1ebd ch\u1ee9a c\u00e1c s\u00f3ng h\u00e0i.<\/li>\n<li><strong>K\u00edch th\u00edch tham s\u1ed1:<\/strong> Khi c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a h\u1ec7 th\u1ed1ng thay \u0111\u1ed5i \u0111\u1ecbnh k\u1ef3 v\u1edbi t\u1ea7n s\u1ed1 li\u00ean quan \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 tr\u1ee5c, ch\u00fang c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c s\u00f3ng h\u00e0i v\u00e0 s\u00f3ng h\u1ea1 h\u00e0i c\u1ee7a t\u1ea7n s\u1ed1 k\u00edch th\u00edch.<\/li>\n<\/ul>\n<div class=\"info-box success\">\n<div class=\"box-title\">Nguy\u00ean t\u1eafc ch\u1ea9n \u0111o\u00e1n ch\u00ednh<\/div>\n<p>M\u00f4 h\u00ecnh c\u00e1c s\u00f3ng h\u00e0i hi\u1ec7n di\u1ec7n, bi\u00ean \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a ch\u00fang v\u00e0 nh\u1eefng s\u00f3ng h\u00e0i v\u1eafng m\u1eb7t cho nh\u00e0 ph\u00e2n t\u00edch bi\u1ebft c\u01a1 ch\u1ebf v\u1eadt l\u00fd n\u00e0o t\u1ea1o ra t\u00ednh phi tuy\u1ebfn t\u00ednh. C\u00e1c nh\u00e0 ph\u00e2n t\u00edch gi\u00e0u kinh nghi\u1ec7m ki\u1ec3m tra to\u00e0n b\u1ed9 c\u1ea5u tr\u00fac s\u00f3ng h\u00e0i c\u1ee7a ph\u1ed5 \u2014 kh\u00f4ng ch\u1ec9 m\u1ee9c \u0111\u1ed9 rung t\u1ed5ng th\u1ec3 \u2014 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c c\u01a1 ch\u1ebf l\u1ed7i c\u1ee5 th\u1ec3.<\/p>\n<\/p><\/div>\n<h2 id=\"fault-signatures\">D\u1ea5u hi\u1ec7u l\u1ed7i chi ti\u1ebft \u2014 M\u00f4 h\u00ecnh s\u00f3ng h\u00e0i<\/h2>\n<h3>1\u00d7 Ch\u1ee7 \u0111\u1ea1o \u2014 M\u1ea5t c\u00e2n b\u1eb1ng<\/h3>\n<p>\u0110\u1ec9nh tr\u1ed9i \u1edf m\u1ee9c 1\u00d7 v\u1edbi c\u00e1c s\u00f3ng h\u00e0i b\u1eadc cao t\u1ed1i thi\u1ec3u l\u00e0 d\u1ea5u hi\u1ec7u kinh \u0111i\u1ec3n c\u1ee7a <strong><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/unbalance\/\">m\u1ea5t c\u00e2n b\u1eb1ng kh\u1ed1i l\u01b0\u1ee3ng<\/a><\/strong>. L\u1ef1c m\u1ea5t c\u00e2n b\u1eb1ng v\u1ed1n d\u0129 c\u00f3 d\u1ea1ng h\u00ecnh sin (n\u00f3 quay c\u00f9ng tr\u1ee5c v\u1edbi t\u1ea7n s\u1ed1 1\u00d7), t\u1ea1o ra m\u1ed9t \u0111\u1ec9nh duy nh\u1ea5t r\u00f5 n\u00e9t trong mi\u1ec1n t\u1ea7n s\u1ed1.<\/p>\n<h4>Chi ti\u1ebft ch\u1ea9n \u0111o\u00e1n<\/h4>\n<ul>\n<li><strong>Bi\u00ean \u0111\u1ed9:<\/strong> T\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi t\u1ed1c \u0111\u1ed9\u00b2 (t\u1ed1c \u0111\u1ed9 g\u1ea5p \u0111\u00f4i \u2192 bi\u00ean \u0111\u1ed9 g\u1ea5p 4 l\u1ea7n) v\u00e0 t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng m\u1ea5t c\u00e2n b\u1eb1ng<\/li>\n<li><strong>Pha:<\/strong> \u1ed4n \u0111\u1ecbnh, c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i, \u0111\u01a1n tr\u1ecb. Thay \u0111\u1ed5i m\u1ed9t c\u00e1ch c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c khi th\u00eam kh\u1ed1i l\u01b0\u1ee3ng th\u1eed \u2014 \u0111\u00e2y l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a t\u1ea5t c\u1ea3. <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/balancing\/\">quy tr\u00ecnh c\u00e2n b\u1eb1ng<\/a><\/li>\n<li><strong>Ph\u01b0\u01a1ng h\u01b0\u1edbng:<\/strong> Ch\u1ee7 y\u1ebfu l\u00e0 h\u01b0\u1edbng t\u00e2m; h\u01b0\u1edbng tr\u1ee5c 1\u00d7 th\u1ea5p tr\u1eeb khi r\u00f4to c\u00f3 ph\u1ea7n nh\u00f4 ra \u0111\u00e1ng k\u1ec3.<\/li>\n<li><strong>X\u00e1c nh\u1eadn:<\/strong> Ph\u1ea3n \u1ee9ng v\u1edbi c\u00e1c tr\u1ecdng l\u01b0\u1ee3ng th\u1eed nghi\u1ec7m x\u00e1c nh\u1eadn s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng. N\u1ebfu 1\u00d7 kh\u00f4ng ph\u1ea3n \u1ee9ng v\u1edbi c\u00e1c tr\u1ecdng l\u01b0\u1ee3ng th\u1eed nghi\u1ec7m, h\u00e3y xem x\u00e9t tr\u1ee5c b\u1ecb cong, \u0111\u1ed9 l\u1ec7ch t\u00e2m ho\u1eb7c hi\u1ec7n t\u01b0\u1ee3ng c\u1ed9ng h\u01b0\u1edfng.<\/li>\n<\/ul>\n<div class=\"info-box warning\">\n<div class=\"box-title\">Kh\u00f4ng ph\u1ea3i m\u1ecdi rung \u0111\u1ed9ng 1\u00d7 \u0111\u1ec1u l\u00e0 m\u1ea5t c\u00e2n b\u1eb1ng.<\/div>\n<p>M\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n t\u1ea1o ra gi\u00e1 tr\u1ecb 1\u00d7 cao m\u00e0 KH\u00d4NG th\u1ec3 kh\u1eafc ph\u1ee5c b\u1eb1ng c\u00e1ch c\u00e2n b\u1eb1ng: tr\u1ee5c b\u1ecb cong, \u0111\u1ed9 l\u1ec7ch t\u00e2m c\u1ee7a tr\u1ee5c, \u0111\u1ed9 \u0111\u1ea3o \u0111i\u1ec7n c\u1ee7a \u0111\u1ea7u d\u00f2 ti\u1ec7m c\u1eadn, \u0111\u1ed9 cong c\u1ee7a r\u00f4to do \u1ea3nh h\u01b0\u1edfng nhi\u1ec7t, \u0111\u1ed9 l\u1ec7ch t\u00e2m c\u1ee7a kh\u1edbp n\u1ed1i, v\u00e0 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/resonance\/\">s\u1ef1 c\u1ed9ng h\u01b0\u1edfng<\/a> S\u1ef1 khu\u1ebfch \u0111\u1ea1i. Lu\u00f4n x\u00e1c minh ch\u1ea9n \u0111o\u00e1n tr\u01b0\u1edbc khi c\u1ed1 g\u1eafng c\u00e2n b\u1eb1ng.<\/p>\n<\/p><\/div>\n<h3>2\u00d7 Ch\u1ee7 \u0111\u1ea1o \u2014 L\u1ec7ch tr\u1ee5c<\/h3>\n<p>S\u00f3ng h\u00e0i b\u1eadc 2 m\u1ea1nh, th\u01b0\u1eddng c\u00f3 bi\u00ean \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng ho\u1eb7c v\u01b0\u1ee3t qu\u00e1 \u0111\u1ec9nh 1\u00d7, l\u00e0 ch\u1ec9 b\u00e1o ch\u00ednh c\u1ee7a <strong><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/misalignment\/\">tr\u1ee5c kh\u00f4ng th\u1eb3ng h\u00e0ng<\/a><\/strong>. S\u1ef1 l\u1ec7ch tr\u1ee5c khi\u1ebfn tr\u1ee5c quay di chuy\u1ec3n theo m\u1ed9t qu\u1ef9 \u0111\u1ea1o kh\u00f4ng h\u00ecnh sin trong m\u1ed7i v\u00f2ng quay, t\u1ea1o ra s\u1ef1 bi\u1ebfn d\u1ea1ng d\u1eabn \u0111\u1ebfn s\u00f3ng h\u00e0i b\u1eadc 2 v\u00e0 \u0111\u00f4i khi cao h\u01a1n.<\/p>\n<h4>Sai l\u1ec7ch g\u00f3c so v\u1edbi sai l\u1ec7ch song song<\/h4>\n<ul>\n<li><strong>Sai l\u1ec7ch g\u00f3c:<\/strong> T\u00e2m tr\u1ee5c c\u1eaft nhau t\u1ea1o th\u00e0nh m\u1ed9t g\u00f3c t\u1ea1i kh\u1edbp n\u1ed1i. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra dao \u0111\u1ed9ng d\u1ecdc tr\u1ee5c b\u1eadc 1 cao. Pha t\u1ea1i kh\u1edbp n\u1ed1i cho th\u1ea5y s\u1ef1 l\u1ec7ch pha kho\u1ea3ng 180\u00b0 theo h\u01b0\u1edbng tr\u1ee5c.<\/li>\n<li><strong>Sai l\u1ec7ch song song (l\u1ec7ch tr\u1ee5c):<\/strong> T\u00e2m tr\u1ee5c song song nh\u01b0ng l\u1ec7ch nhau. T\u1ea1o ra rung \u0111\u1ed9ng h\u01b0\u1edbng t\u00e2m \u1edf th\u00e0nh ph\u1ea7n 2\u00d7 cao, th\u01b0\u1eddng v\u1edbi 2\u00d7 \u2265 1\u00d7. Tr\u01b0\u1eddng h\u1ee3p nghi\u00eam tr\u1ecdng t\u1ea1o ra th\u00e0nh ph\u1ea7n 3\u00d7 v\u00e0 4\u00d7. Pha h\u01b0\u1edbng t\u00e2m qua kh\u1edbp n\u1ed1i cho th\u1ea5y s\u1ef1 d\u1ecbch chuy\u1ec3n kho\u1ea3ng 180\u00b0.<\/li>\n<li><strong>T\u1ed5ng h\u1ee3p:<\/strong> Tr\u00ean th\u1ef1c t\u1ebf, c\u1ea3 hai th\u01b0\u1eddng c\u00f9ng t\u1ed3n t\u1ea1i, t\u1ea1o ra s\u1ef1 pha tr\u1ed9n c\u00e1c d\u1ea5u hi\u1ec7u \u0111\u1eb7c tr\u01b0ng.<\/li>\n<\/ul>\n<h4>T\u1ef7 l\u1ec7 2\u00d7\/1\u00d7 nh\u01b0 m\u1ed9t ch\u1ec9 s\u1ed1 ch\u1ea9n \u0111o\u00e1n<\/h4>\n<table class=\"article-table\">\n<thead>\n<tr>\n<th>T\u1ef7 l\u1ec7 2\u00d7\/1\u00d7<\/th>\n<th>T\u00ecnh tr\u1ea1ng c\u00f3 th\u1ec3 x\u1ea3y ra<\/th>\n<th>H\u00e0nh \u0111\u1ed9ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td class=\"mono\">&lt; 0,25<\/td>\n<td>B\u00ecnh th\u01b0\u1eddng; th\u00e0nh ph\u1ea7n 2\u00d7, hi\u1ec7n di\u1ec7n \u1edf m\u1ee9c th\u1ea5p trong h\u1ea7u h\u1ebft c\u00e1c m\u00e1y.<\/td>\n<td>Kh\u00f4ng c\u1ea7n h\u00e0nh \u0111\u1ed9ng<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">0,25 \u2013 0,50<\/td>\n<td>C\u00f3 th\u1ec3 x\u1ea3y ra sai l\u1ec7ch nh\u1eb9; \u0111i\u1ec1u n\u00e0y l\u00e0 b\u00ecnh th\u01b0\u1eddng \u0111\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 lo\u1ea1i kh\u1edbp n\u1ed1i.<\/td>\n<td>Ki\u1ec3m tra s\u1ef1 th\u1eb3ng h\u00e0ng; so s\u00e1nh v\u1edbi \u0111\u01b0\u1eddng c\u01a1 s\u1edf.<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">0,50 \u2013 1,00<\/td>\n<td>C\u00f3 kh\u1ea3 n\u0103ng x\u1ea3y ra sai l\u1ec7ch \u0111\u00e1ng k\u1ec3.<\/td>\n<td>Th\u1ef1c hi\u1ec7n c\u0103n ch\u1ec9nh laser ch\u00ednh x\u00e1c<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">&gt; 1,00<\/td>\n<td>Sai l\u1ec7ch t\u00e2m tr\u1ee5c nghi\u00eam tr\u1ecdng; th\u00e0nh ph\u1ea7n 2\u00d7 v\u01b0\u1ee3t qu\u00e1 th\u00e0nh ph\u1ea7n 1\u00d7<\/td>\n<td>Kh\u1ea9n c\u1ea5p \u2014 \u0111i\u1ec1u ch\u1ec9nh l\u1ea1i; ki\u1ec3m tra kh\u1edbp n\u1ed1i v\u00e0 \u0111\u1ed9 c\u0103ng c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Nhi\u1ec1u s\u00f3ng h\u00e0i \u2014 L\u1ecfng c\u01a1 kh\u00ed<\/h3>\n<p>M\u1ed9t lo\u1ea1t phong ph\u00fa <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/running-speed\/\">t\u1ed1c \u0111\u1ed9 v\u1eadn h\u00e0nh<\/a> s\u00f3ng h\u00e0i (1\u00d7, 2\u00d7, 3\u00d7, 4\u00d7, 5\u00d7\u2026 \u0111\u1ebfn 10\u00d7 ho\u1eb7c h\u01a1n) cho bi\u1ebft <strong>s\u1ef1 l\u1ecfng l\u1ebbo v\u1ec1 m\u1eb7t c\u01a1 h\u1ecdc<\/strong>. C\u00e1c t\u00e1c \u0111\u1ed9ng, ti\u1ebfng va \u0111\u1eadp v\u00e0 chu k\u1ef3 ti\u1ebfp x\u00fac\/t\u00e1ch r\u1eddi phi tuy\u1ebfn t\u00ednh t\u1ea1o ra s\u1ef1 bi\u1ebfn d\u1ea1ng d\u1ea1ng s\u00f3ng c\u1ef1c \u0111\u1ed9, ph\u00e2n t\u00e1ch th\u00e0nh nhi\u1ec1u th\u00e0nh ph\u1ea7n s\u00f3ng h\u00e0i.<\/p>\n<h4>Ba lo\u1ea1i l\u1ecfng l\u1ebbo c\u01a1 kh\u00ed<\/h4>\n<ul>\n<li><strong>Lo\u1ea1i A \u2014 C\u1ea5u tr\u00fac:<\/strong> M\u1ed1i n\u1ed1i gi\u1eefa m\u00e1y v\u00e0 m\u00f3ng b\u1ecb l\u1ecfng (ch\u00e2n m\u1ec1m, \u0111\u1ebf n\u1ee9t, bu l\u00f4ng neo l\u1ecfng). T\u1ea1o ra dao \u0111\u1ed9ng \u0111\u1ecbnh h\u01b0\u1edbng 1\u00d7 (cao h\u01a1n \u1edf h\u01b0\u1edbng l\u1ecfng). Th\u1eed nghi\u1ec7m ch\u00ednh: si\u1ebft ch\u1eb7t\/n\u1edbi l\u1ecfng t\u1eebng bu l\u00f4ng ri\u00eang l\u1ebb trong khi theo d\u00f5i bi\u00ean \u0111\u1ed9 dao \u0111\u1ed9ng 1\u00d7.<\/li>\n<li><strong>Lo\u1ea1i B \u2014 Linh ki\u1ec7n:<\/strong> L\u00f3t \u1ed5 tr\u1ee5c l\u1ecfng trong n\u1eafp, n\u1eafp l\u1ecfng tr\u00ean v\u1ecf, khe h\u1edf \u1ed5 tr\u1ee5c qu\u00e1 l\u1edbn. T\u1ea1o ra m\u1ed9t h\u1ecd h\u00e0i, th\u01b0\u1eddng k\u00e8m c\u00e1c d\u01b0\u1edbi h\u00e0i (\u00bd\u00d7). D\u01b0\u1edbi h\u00e0i l\u00e0 d\u1ea5u hi\u1ec7u ph\u00e2n bi\u1ec7t ch\u00ednh v\u1edbi l\u1ec7ch t\u00e2m (\u0111\u1ed9 l\u1ecfng, kh\u00f4ng ph\u1ea3i l\u1ec7ch t\u00e2m, t\u1ea1o ra d\u01b0\u1edbi h\u00e0i).<\/li>\n<li><strong>Lo\u1ea1i C \u2014 \u0110\u1ebf \u1ed5 tr\u1ee5c:<\/strong> C\u00e1nh b\u01a1m b\u1ecb l\u1ecfng tr\u00ean tr\u1ee5c, moay \u01a1 kh\u1edbp n\u1ed1i b\u1ecb l\u1ecfng, khe h\u1edf \u1ed5 tr\u1ee5c qu\u00e1 l\u1edbn khi\u1ebfn r\u00f4to b\u1ecb rung l\u1eafc. T\u1ea1o ra nhi\u1ec1u s\u00f3ng h\u00e0i v\u1edbi m\u1ee9c nhi\u1ec5u n\u1ec1n b\u0103ng th\u00f4ng r\u1ed9ng t\u0103ng cao.<\/li>\n<\/ul>\n<div class=\"info-box\">\n<div class=\"box-title\">S\u00f3ng h\u00e0i b\u1eadc d\u01b0\u1edbi: D\u1ea5u \u1ea5n c\u1ee7a s\u1ef1 l\u1ecfng l\u1ebbo<\/div>\n<p>S\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a c\u00e1c s\u00f3ng h\u00e0i b\u1eadc th\u1ea5p (\u00bd\u00d7, \u2153\u00d7) l\u00e0 d\u1ea5u hi\u1ec7u ph\u00e2n bi\u1ec7t \u0111\u00e1ng tin c\u1eady nh\u1ea5t gi\u1eefa hi\u1ec7n t\u01b0\u1ee3ng l\u1ecfng l\u1ebbo v\u00e0 l\u1ec7ch tr\u1ee5c. L\u1ec7ch tr\u1ee5c t\u1ea1o ra s\u00f3ng 2\u00d7 v\u00e0 3\u00d7 nh\u01b0ng hi\u1ebfm khi t\u1ea1o ra s\u00f3ng h\u00e0i b\u1eadc th\u1ea5p. Hi\u1ec7n t\u01b0\u1ee3ng l\u1ecfng l\u1ebbo (Lo\u1ea1i B v\u00e0 C) th\u01b0\u1eddng t\u1ea1o ra s\u00f3ng \u00bd\u00d7 v\u00ec r\u00f4to ti\u1ebfp x\u00fac v\u1edbi m\u1ed9t ph\u00eda c\u1ee7a \u1ed5 tr\u1ee5c trong m\u1ed9t n\u1eeda v\u00f2ng quay v\u00e0 b\u1eadt sang ph\u00eda b\u00ean kia trong n\u1eeda v\u00f2ng quay ti\u1ebfp theo \u2014 t\u1ea1o ra m\u1ed9t chu k\u1ef3 l\u1eb7p l\u1ea1i sau m\u1ed7i hai v\u00f2ng quay, do \u0111\u00f3 t\u1ea1o ra s\u00f3ng \u00bd\u00d7.<\/p>\n<\/p><\/div>\n<h3>C\u00e1c \u0111i\u1ec1u ki\u1ec7n t\u1ea1o s\u00f3ng h\u00e0i kh\u00e1c<\/h3>\n<h4>Tr\u1ee5c cong<\/h4>\n<p>T\u1ea1o ra c\u1ea3 rung \u0111\u1ed9ng 1\u00d7 v\u00e0 2\u00d7 v\u1edbi th\u00e0nh ph\u1ea7n tr\u1ee5c cao. Kh\u00f4ng gi\u1ed1ng nh\u01b0 sai c\u0103n ch\u1ec9nh, m\u1ed9t <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/bent-shaft\/\">tr\u1ee5c b\u1ecb cong<\/a> cho th\u1ea5y 1\u00d7 kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c s\u1eeda ch\u1eefa b\u1eb1ng c\u00e2n b\u1eb1ng (l\u1ec7ch t\u00e2m h\u00ecnh h\u1ecdc, kh\u00f4ng ph\u1ea3i ph\u00e2n b\u1ed1 kh\u1ed1i l\u01b0\u1ee3ng) v\u00e0 kho\u1ea3ng ch\u00eanh l\u1ec7ch pha tr\u1ee5c ~180\u00b0 gi\u1eefa c\u00e1c \u0111\u1ea7u tr\u1ee5c. 2\u00d7 xu\u1ea5t ph\u00e1t t\u1eeb \u0111\u1ed9 c\u1ee9ng kh\u00f4ng \u0111\u1ed1i x\u1ee9ng khi v\u00f2ng cong m\u1edf v\u00e0 \u0111\u00f3ng l\u1ea1i khi quay.<\/p>\n<h4>M\u00e1y m\u00f3c chuy\u1ec3n \u0111\u1ed9ng t\u1ecbnh ti\u1ebfn<\/h4>\n<p>\u0110\u1ed9ng c\u01a1, m\u00e1y n\u00e9n v\u00e0 c\u00e1c m\u00e1y chuy\u1ec3n \u0111\u1ed9ng t\u1ecbnh ti\u1ebfn v\u1ed1n d\u0129 t\u1ea1o ra ph\u1ed5 s\u00f3ng h\u00e0i phong ph\u00fa v\u00ec chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a piston\/tr\u1ee5c khu\u1ef7u v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 kh\u00f4ng h\u00ecnh sin. M\u1eabu s\u00f3ng h\u00e0i ph\u1ee5 thu\u1ed9c v\u00e0o s\u1ed1 xi lanh, th\u1ee9 t\u1ef1 \u0111\u00e1nh l\u1eeda v\u00e0 lo\u1ea1i chu k\u1ef3 (2 th\u00ec so v\u1edbi 4 th\u00ec).<\/p>\n<h4>C\u1ecd x\u00e1t r\u00f4to<\/h4>\n<p>Ma s\u00e1t m\u1ed9t ph\u1ea7n (ti\u1ebfp x\u00fac trong m\u1ed9t ph\u1ea7n c\u1ee7a m\u1ed7i v\u00f2ng quay) t\u1ea1o ra nhi\u1ec1u s\u00f3ng h\u00e0i b\u1eadc cao \u2014 \u0111\u00f4i khi l\u00ean \u0111\u1ebfn 10\u00d7, 20\u00d7 ho\u1eb7c h\u01a1n. Ma s\u00e1t to\u00e0n v\u00f2ng (ti\u1ebfp x\u00fac li\u00ean t\u1ee5c 360\u00b0) t\u1ea1o ra c\u00e1c s\u00f3ng h\u00e0i ph\u1ee5 ch\u1ee7 \u0111\u1ea1o (\u00bd\u00d7, \u2153\u00d7, \u00bc\u00d7) th\u00f4ng qua c\u01a1 ch\u1ebf ti\u1ebfn \u0111\u1ed9ng ng\u01b0\u1ee3c.<\/p>\n<h4>C\u00e1c s\u1ef1 c\u1ed1 \u0111i\u1ec7n trong \u0111\u1ed9ng c\u01a1<\/h4>\n<p>\u0110\u1ed9ng c\u01a1 \u0111i\u1ec7n xoay chi\u1ec1u t\u1ea1o ra rung \u0111\u1ed9ng \u1edf b\u1ed9i s\u1ed1 c\u1ee7a t\u1ea7n s\u1ed1 l\u01b0\u1edbi (50 ho\u1eb7c 60 Hz) \u0111\u1ed9c l\u1eadp v\u1edbi t\u1ed1c \u0111\u1ed9 tr\u1ee5c. Ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 2 l\u1ea7n t\u1ea7n s\u1ed1 l\u01b0\u1edbi (100 Hz trong h\u1ec7 th\u1ed1ng 50 Hz, 120 Hz trong h\u1ec7 th\u1ed1ng 60 Hz). \u0110\u00e2y KH\u00d4NG ph\u1ea3i l\u00e0 s\u00f3ng h\u00e0i c\u1ee7a t\u1ed1c \u0111\u1ed9 tr\u1ee5c \u2014 m\u00e0 l\u00e0 s\u00f3ng h\u00e0i c\u1ee7a t\u1ea7n s\u1ed1 l\u01b0\u1edbi, \u0111\u00e2y l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 ph\u00e2n bi\u1ec7t rung \u0111\u1ed9ng \u0111i\u1ec7n v\u1edbi rung \u0111\u1ed9ng c\u01a1 h\u1ecdc. <strong>ki\u1ec3m tra c\u1eaft \u0111i\u1ec7n<\/strong> C\u00f3 th\u1ec3 kh\u1eb3ng \u0111\u1ecbnh ch\u1eafc ch\u1eafn r\u1eb1ng: \u0111\u1ed9 rung \u0111i\u1ec7n gi\u1ea3m ngay l\u1eadp t\u1ee9c khi ng\u1eaft ngu\u1ed3n, trong khi \u0111\u1ed9 rung c\u01a1 h\u1ecdc v\u1eabn ti\u1ebfp t\u1ee5c trong qu\u00e1 tr\u00ecnh gi\u1ea3m t\u1ed1c.<\/p>\n<p>C\u00e1c khi\u1ebfm khuy\u1ebft thanh rotor t\u1ea1o ra c\u00e1c d\u1ea3i b\u00ean quanh 1\u00d7 c\u00e1ch nhau b\u1eb1ng t\u1ea7n s\u1ed1 \u0111i qua c\u1ef1c (<a href=\"https:\/\/vibromera.eu\/vi\/glossary\/slip-frequency\/\">t\u1ea7n s\u1ed1 tr\u01b0\u1ee3t<\/a> \u00d7 s\u1ed1 c\u1ef1c). C\u00e1c d\u1ea3i b\u00ean n\u00e0y r\u1ea5t g\u1ea7n 1\u00d7 (trong v\u00f2ng 1\u20135 Hz), y\u00eau c\u1ea7u \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/zoom-fft\/\">zoom FFT<\/a> ph\u00e2n t\u00edch \u0111\u1ec3 gi\u1ea3i quy\u1ebft.<\/p>\n<h2 id=\"non-synchronous\">T\u1ea7n s\u1ed1 kh\u00f4ng \u0111\u1ed3ng b\u1ed9 \u2014 Kh\u00f4ng ph\u1ea3i l\u00e0 s\u00f3ng h\u00e0i th\u1ef1c s\u1ef1<\/h2>\n<p>M\u1ed9t s\u1ed1 t\u1ea7n s\u1ed1 quan tr\u1ecdng \u0111\u00f4i khi b\u1ecb nh\u1ea7m l\u1eabn v\u1edbi s\u00f3ng h\u00e0i nh\u01b0ng th\u1ef1c ch\u1ea5t l\u1ea1i kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o t\u1ed1c \u0111\u1ed9 quay c\u1ee7a tr\u1ee5c:<\/p>\n<table class=\"article-table\">\n<thead>\n<tr>\n<th>Lo\u1ea1i t\u1ea7n s\u1ed1<\/th>\n<th>C\u00f4ng th\u1ee9c<\/th>\n<th>M\u1ed1i quan h\u1ec7 v\u1edbi RPM<\/th>\n<th>Ghi ch\u00fa<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>T\u1ea7n s\u1ed1 l\u1ed7i \u1ed5 tr\u1ee5c<\/td>\n<td class=\"mono\"><a href=\"https:\/\/vibromera.eu\/vi\/calculators\/bearing-defect-frequencies\/\">BPFO, BPFI, BSF, FTF<\/a><\/td>\n<td>C\u00e1c b\u1ed9i s\u1ed1 kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ed1 nguy\u00ean (v\u00ed d\u1ee5: 3,57\u00d7, 5,43\u00d7)<\/td>\n<td>Lu\u00f4n kh\u00f4ng \u0111\u1ed3ng b\u1ed9; ph\u1ee5 thu\u1ed9c v\u00e0o h\u00ecnh d\u1ea1ng \u1ed5 tr\u1ee5c.<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/gear-mesh-frequency\/\">T\u1ea7n s\u1ed1 \u0103n kh\u1edbp b\u00e1nh r\u0103ng<\/a><\/td>\n<td class=\"mono\">GMF = s\u1ed1 r\u0103ng \u00d7 v\u00f2ng\/ph\u00fat<\/td>\n<td>S\u1ed1 nguy\u00ean nh\u01b0ng c\u00f3 b\u1eadc r\u1ea5t cao<\/td>\n<td>V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, \u0111\u00f3 l\u00e0 m\u1ed9t s\u00f3ng h\u00e0i nh\u01b0ng \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch ri\u00eang bi\u1ec7t.<\/td>\n<\/tr>\n<tr>\n<td>L\u01b0\u1ee1i\/c\u00e1nh \u0111i qua<\/td>\n<td class=\"mono\">BPF = s\u1ed1 c\u00e1nh qu\u1ea1t \u00d7 s\u1ed1 v\u00f2ng quay\/ph\u00fat<\/td>\n<td>B\u1ed9i s\u1ed1 nguy\u00ean<\/td>\n<td>B\u00ecnh th\u01b0\u1eddng; bi\u00ean \u0111\u1ed9 qu\u00e1 cao cho th\u1ea5y c\u00f3 v\u1ea5n \u0111\u1ec1.<\/td>\n<\/tr>\n<tr>\n<td>T\u1ea7n s\u1ed1 \u0111\u01b0\u1eddng d\u00e2y<\/td>\n<td class=\"mono\">FL = 50 ho\u1eb7c 60 Hz<\/td>\n<td>Kh\u00f4ng li\u00ean quan \u0111\u1ebfn RPM<\/td>\n<td>\u0110i\u1ec7n; bi\u1ebfn m\u1ea5t khi m\u1ea5t \u0111i\u1ec7n.<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/natural-frequency\/\">T\u1ea7n s\u1ed1 t\u1ef1 nhi\u00ean<\/a><\/td>\n<td class=\"mono\">f<sub>N<\/sub> = \u221a(k\/m)\/2\u03c0<\/td>\n<td>C\u1ed1 \u0111\u1ecbnh; kh\u00f4ng li\u00ean quan \u0111\u1ebfn RPM<\/td>\n<td>T\u1ea7n s\u1ed1 kh\u00f4ng \u0111\u1ed5i b\u1ea5t k\u1ec3 s\u1ef1 thay \u0111\u1ed5i t\u1ed1c \u0111\u1ed9<\/td>\n<\/tr>\n<tr>\n<td>T\u1ea7n s\u1ed1 \u0111ai<\/td>\n<td class=\"mono\">f<sub>\u0111ai<\/sub> = RPM \u00d7 \u03c0 \u00d7 D\/L<\/td>\n<td>T\u1ed1c \u0111\u1ed9 d\u01b0\u1edbi \u0111\u1ed3ng b\u1ed9 (&lt; t\u1ed1c \u0111\u1ed9 tr\u1ee5c)<\/td>\n<td>T\u1ea7n s\u1ed1 d\u00e2y \u0111ai v\u00e0 c\u00e1c s\u00f3ng h\u00e0i c\u1ee7a n\u00f3 2\u00d7, 3\u00d7, 4\u00d7 BF<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"analysis-guide\">H\u01b0\u1edbng d\u1eabn ph\u00e2n t\u00edch \u2014 C\u00e1ch di\u1ec5n gi\u1ea3i c\u00e1c m\u1eabu s\u00f3ng h\u00e0i<\/h2>\n<h3>B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh th\u00e0nh ph\u1ea7n c\u01a1 b\u1ea3n (1\u00d7)<\/h3>\n<p>X\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed \u0111\u1ec9nh 1\u00d7 t\u01b0\u01a1ng \u1ee9ng v\u1edbi t\u1ed1c \u0111\u1ed9 quay tr\u1ee5c. X\u00e1c minh b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/tachometer\/\">m\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 quay<\/a> ho\u1eb7c t\u00ean th\u01b0\u01a1ng hi\u1ec7u \u0111\u1ed9ng c\u01a1. Trong c\u00e1c m\u00e1y c\u00f3 t\u1ed1c \u0111\u1ed9 thay \u0111\u1ed5i, 1\u00d7 ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c cho m\u1ed7i ph\u00e9p \u0111o.<\/p>\n<h3>B\u01b0\u1edbc 2: L\u1eadp danh m\u1ee5c t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ec9nh<\/h3>\n<p>\u0110\u1ed1i v\u1edbi m\u1ed7i \u0111\u1ec9nh \u0111\u00e1ng k\u1ec3, h\u00e3y x\u00e1c \u0111\u1ecbnh: n\u00f3 c\u00f3 ph\u1ea3i l\u00e0 b\u1ed9i s\u1ed1 nguy\u00ean ch\u00ednh x\u00e1c c\u1ee7a 1\u00d7 (s\u00f3ng h\u00e0i th\u1ef1c) kh\u00f4ng? L\u00e0 b\u1ed9i s\u1ed1 ph\u00e2n s\u1ed1 (s\u00f3ng h\u00e0i ph\u1ee5)? Kh\u00f4ng li\u00ean quan \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 tr\u1ee5c (kh\u00f4ng \u0111\u1ed3ng b\u1ed9)? S\u1eed d\u1ee5ng c\u00e1c t\u00ednh n\u0103ng con tr\u1ecf s\u00f3ng h\u00e0i c\u1ee7a m\u00e1y ph\u00e2n t\u00edch \u0111\u1ec3 \u0111\u1ea1t hi\u1ec7u qu\u1ea3 cao.<\/p>\n<h3>B\u01b0\u1edbc 3: Ki\u1ec3m tra m\u1eabu bi\u00ean \u0111\u1ed9<\/h3>\n<ul>\n<li>S\u00f3ng h\u00e0i n\u00e0o chi\u1ebfm \u01b0u th\u1ebf? \u2192 Ch\u1ec9 ra l\u1ed7i c\u1ee5 th\u1ec3<\/li>\n<li>C\u00f3 bao nhi\u00eau s\u00f3ng h\u00e0i? \u2192 C\u00e0ng nhi\u1ec1u s\u00f3ng h\u00e0i = bi\u1ebfn d\u1ea1ng t\u00edn hi\u1ec7u c\u00e0ng nghi\u00eam tr\u1ecdng<\/li>\n<li>Li\u1ec7u 2\u00d7 c\u00f3 v\u01b0\u1ee3t qu\u00e1 1\u00d7 kh\u00f4ng? \u2192 C\u00f3 kh\u1ea3 n\u0103ng l\u1ec7ch t\u00e2m tr\u1ee5c<\/li>\n<li>C\u00f3 c\u00e1c s\u00f3ng con hi\u1ec7n di\u1ec7n? \u2192 L\u1ecfng, ma s\u00e1t, ho\u1eb7c <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/oil-whirl\/\">xo\u00e1y d\u1ea7u<\/a><\/li>\n<li>Bi\u00ean \u0111\u1ed9 c\u00f3 gi\u1ea3m d\u1ea7n theo th\u1ee9 t\u1ef1 (suy gi\u1ea3m 1\/n) kh\u00f4ng? \u2192 \u0110i\u1ec3n h\u00ecnh cho t\u00ednh l\u1ecfng l\u1ebbo<\/li>\n<\/ul>\n<h3>B\u01b0\u1edbc 4: Ki\u1ec3m tra h\u01b0\u1edbng \u0111i<\/h3>\n<ul>\n<li><strong>Rung \u0111\u1ed9ng h\u01b0\u1edbng t\u00e2m cao, rung \u0111\u1ed9ng d\u1ecdc tr\u1ee5c th\u1ea5p:<\/strong> M\u1ea5t c\u00e2n b\u1eb1ng ho\u1eb7c l\u1ecfng l\u1ebbo<\/li>\n<li><strong>Tr\u1ee5c cao:<\/strong> Tr\u1ee5c b\u1ecb l\u1ec7ch (\u0111\u1eb7c bi\u1ec7t l\u00e0 l\u1ec7ch g\u00f3c) ho\u1eb7c b\u1ecb cong.<\/li>\n<li><strong>H\u01b0\u1edbng k\u00ednh \u0111\u1ecbnh h\u01b0\u1edbng:<\/strong> \u0110\u1ed9 l\u1ecfng l\u1ebbo v\u1ec1 c\u1ea5u tr\u00fac (cao h\u01a1n theo h\u01b0\u1edbng l\u1ecfng l\u1ebbo)<\/li>\n<\/ul>\n<h3>B\u01b0\u1edbc 5: Xu h\u01b0\u1edbng theo th\u1eddi gian<\/h3>\n<ul>\n<li>Bi\u00ean \u0111\u1ed9 s\u00f3ng h\u00e0i c\u00f3 \u0111ang t\u0103ng l\u00ean kh\u00f4ng? \u2192 S\u1ef1 c\u1ed1 \u0111ang ti\u1ebfn tri\u1ec3n<\/li>\n<li>C\u00f3 ph\u1ea3i s\u00f3ng h\u00e0i m\u1edbi \u0111ang xu\u1ea5t hi\u1ec7n? \u2192 C\u01a1 ch\u1ebf l\u1ed7i m\u1edbi \u0111ang h\u00ecnh th\u00e0nh<\/li>\n<li>M\u1ee9c \u0111\u1ed9 ti\u1ebfng \u1ed3n c\u00f3 \u0111ang t\u0103ng l\u00ean kh\u00f4ng? \u2192 Hao m\u00f2n chung ho\u1eb7c h\u1ecfng h\u00f3c \u1edf giai \u0111o\u1ea1n cu\u1ed1i<\/li>\n<\/ul>\n<h3>B\u01b0\u1edbc 6: \u0110\u1ed1i chi\u1ebfu v\u1edbi d\u1eef li\u1ec7u pha<\/h3>\n<ul>\n<li><strong>M\u1ea5t c\u00e2n b\u1eb1ng:<\/strong> Pha 1\u00d7 \u1ed5n \u0111\u1ecbnh v\u00e0 c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i.<\/li>\n<li><strong>S\u1ef1 kh\u00f4ng c\u00e2n x\u1ee9ng:<\/strong> Pha 1\u00d7 ho\u1eb7c 2\u00d7 cho th\u1ea5y g\u00f3c ~180\u00b0 qua kh\u1edbp n\u1ed1i.<\/li>\n<li><strong>S\u1ef1 l\u1ecfng l\u1ebbo:<\/strong> Pha kh\u00f4ng \u1ed5n \u0111\u1ecbnh, c\u00f3 th\u1ec3 thay \u0111\u1ed5i ng\u1eabu nhi\u00ean gi\u1eefa c\u00e1c l\u1ea7n \u0111o.<\/li>\n<\/ul>\n<p>Trong th\u1ef1c t\u1ebf, t\u1ea5t c\u1ea3 s\u00e1u b\u01b0\u1edbc c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1ea1i ch\u1ed7 b\u1eb1ng m\u1ed9t thi\u1ebft b\u1ecb hai k\u00eanh di \u0111\u1ed9ng nh\u01b0 <a href=\"https:\/\/vibromera.eu\/vi\/san-pham\/balanset-1\/\">Balanset-1A<\/a>: g\u1eafn c\u00e1c c\u1ea3m bi\u1ebfn gia t\u1ed1c, ch\u1ee5p ph\u1ed5 v\u00e0 pha 1\u00d7 khi m\u00e1y ch\u1ea1y, v\u00e0 \u0111\u1ecdc tr\u1ef1c ti\u1ebfp m\u1eabu s\u00f3ng h\u00e0i \u0111\u1ed1i v\u1edbi b\u1ea3ng ch\u1ea9n \u0111o\u00e1n \u1edf tr\u00ean \u2014 sau \u0111\u00f3 s\u1eeda ch\u1eefa b\u1ea5t k\u1ef3 m\u1ea5t c\u00e2n b\u1eb1ng c\u00f2n l\u1ea1i m\u00e0 kh\u00f4ng c\u1ea7n th\u00e1o rotor.<\/p>\n<h2 id=\"case-studies\">Nghi\u00ean c\u1ee9u \u0111i\u1ec3n h\u00ecnh \u2014 Ph\u00e2n t\u00edch s\u00f3ng h\u00e0i trong th\u1ef1c t\u1ebf<\/h2>\n<div class=\"example-block\">\n<div class=\"example-title\">Tr\u01b0\u1eddng h\u1ee3p 1: \u0110\u1ed9ng c\u01a1-b\u01a1m \u2014 L\u00e0 do m\u1ea5t c\u00e2n b\u1eb1ng hay l\u1ec7ch tr\u1ee5c?<\/div>\n<p><strong>M\u00e1y m\u00f3c:<\/strong> \u0110\u1ed9ng c\u01a1 30 kW d\u1eabn \u0111\u1ed9ng b\u01a1m ly t\u00e2m \u1edf t\u1ed1c \u0111\u1ed9 2960 v\u00f2ng\/ph\u00fat th\u00f4ng qua kh\u1edbp n\u1ed1i m\u1ec1m. \u0110\u1ed9 rung t\u1ed5ng th\u1ec3: 6,2 mm\/s t\u1ea1i \u1ed5 tr\u1ee5c \u0111\u1ea7u d\u1eabn \u0111\u1ed9ng c\u1ee7a \u0111\u1ed9ng c\u01a1.<\/p>\n<p><strong>Ph\u1ed5:<\/strong> 1\u00d7 = 4,1 mm\/s, 2\u00d7 = 3,8 mm\/s, 3\u00d7 = 1,2 mm\/s. T\u1ef7 l\u1ec7 2\u00d7\/1\u00d7 = 0,93.<\/p>\n<p><strong>Ph\u01b0\u01a1ng h\u01b0\u1edbng:<\/strong> Rung \u0111\u1ed9ng h\u01b0\u1edbng t\u00e2m cao 2\u00d7 t\u1ea1i c\u1ea3 hai \u1ed5 tr\u1ee5c \u0111\u1ea7u truy\u1ec1n \u0111\u1ed9ng. Rung \u0111\u1ed9ng d\u1ecdc tr\u1ee5c 1\u00d7 t\u1ea1i kh\u1edbp n\u1ed1i: \u0111\u1ed9ng c\u01a1 = 2,8 mm\/s, b\u01a1m = 3,1 mm\/s v\u1edbi \u0111\u1ed9 l\u1ec7ch pha 165\u00b0.<\/p>\n<p><strong>Ch\u1ea9n \u0111o\u00e1n:<\/strong> S\u1ef1 l\u1ec7ch tr\u1ee5c k\u1ebft h\u1ee3p c\u1ea3 v\u1ec1 g\u00f3c v\u00e0 song song. T\u1ef7 l\u1ec7 2\u00d7\/1\u00d7 ti\u1ebfn g\u1ea7n \u0111\u1ebfn 1,0, c\u00e1c ch\u1ec9 s\u1ed1 tr\u1ee5c cao v\u00e0 pha ~180\u00b0 tr\u00ean to\u00e0n b\u1ed9 kh\u1edbp n\u1ed1i \u0111\u1ec1u x\u00e1c nh\u1eadn \u0111i\u1ec1u n\u00e0y. KH\u00d4NG ph\u1ea3i l\u00e0 m\u1ea5t c\u00e2n b\u1eb1ng \u2014 m\u1eb7c d\u00f9 1\u00d7 cao h\u01a1n, nh\u01b0ng m\u00f4 h\u00ecnh 2\u00d7 m\u1edbi l\u00e0 v\u1ea5n \u0111\u1ec1 th\u1ef1c s\u1ef1.<\/p>\n<p><strong>Ho\u1ea1t \u0111\u1ed9ng:<\/strong> \u0110\u00e3 th\u1ef1c hi\u1ec7n c\u0103n ch\u1ec9nh b\u1eb1ng laser. Sau khi c\u0103n ch\u1ec9nh: 1\u00d7 = 0,8 mm\/s, 2\u00d7 = 0,3 mm\/s. T\u1ed5ng th\u1ec3 gi\u1ea3m xu\u1ed1ng c\u00f2n 1,1 mm\/s \u2014 gi\u1ea3m 82%.<\/p>\n<\/p><\/div>\n<div class=\"example-block\">\n<div class=\"example-title\">Tr\u01b0\u1eddng h\u1ee3p 2: Qu\u1ea1t \u2014 T\u1ea1i sao C\u00e2n b\u1eb1ng kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng?<\/div>\n<p><strong>M\u00e1y m\u00f3c:<\/strong> Qu\u1ea1t ly t\u00e2m \u1edf t\u1ed1c \u0111\u1ed9 1480 v\u00f2ng\/ph\u00fat. \u0110\u1ed9 rung: 8,5 mm\/gi\u00e2y. L\u1ea7n c\u00e2n b\u1eb1ng tr\u01b0\u1edbc \u0111\u00e3 gi\u1ea3m \u0111\u01b0\u1ee3c th\u00e0nh ph\u1ea7n 1\u00d7 nh\u01b0ng \u0111\u1ed9 rung t\u1ed5ng th\u1ec3 v\u1eabn c\u00f2n cao.<\/p>\n<p><strong>Ph\u1ed5:<\/strong> 1\u00d7 = 2,1 mm\/s (th\u1ea5p sau khi c\u00e2n b\u1eb1ng), \u00bd\u00d7 = 1,8 mm\/s, 2\u00d7 = 3,2 mm\/s, 3\u00d7 = 2,5 mm\/s, 4\u00d7 = 1,8 mm\/s, 5\u00d7 = 1,1 mm\/s, 6\u00d7 = 0,7 mm\/s.<\/p>\n<p><strong>Ch\u1ea9n \u0111o\u00e1n:<\/strong> Hi\u1ec7n t\u01b0\u1ee3ng l\u1ecfng l\u1ebbo c\u01a1 h\u1ecdc (Lo\u1ea1i B). \u0110\u1eb7c \u0111i\u1ec3m nh\u1eadn d\u1ea1ng l\u00e0 h\u1ecd s\u00f3ng h\u00e0i v\u1edbi s\u00f3ng h\u00e0i ph\u1ee5 \u00bd\u00d7. Vi\u1ec7c c\u00e2n b\u1eb1ng \u0111\u00e3 kh\u1eafc ph\u1ee5c \u0111\u01b0\u1ee3c 1\u00d7 nh\u01b0ng kh\u00f4ng th\u1ec3 gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c c\u00e1c s\u00f3ng h\u00e0i do l\u1ecfng l\u1ebbo t\u1ea1o ra, v\u1ed1n chi ph\u1ed1i to\u00e0n b\u1ed9 rung \u0111\u1ed9ng.<\/p>\n<p><strong>Ho\u1ea1t \u0111\u1ed9ng:<\/strong> Ki\u1ec3m tra cho th\u1ea5y v\u1ecf \u1ed5 tr\u1ee5c b\u1ecb l\u1ecfng 0,08 mm trong l\u1ed7 khoan c\u1ee7a \u0111\u1ebf. V\u1ecf \u1ed5 tr\u1ee5c \u0111\u01b0\u1ee3c khoan l\u1ea1i v\u00e0 l\u1eafp \u1ed5 tr\u1ee5c m\u1edbi. Sau khi s\u1eeda ch\u1eefa: t\u1ea5t c\u1ea3 c\u00e1c s\u00f3ng h\u00e0i gi\u1ea3m xu\u1ed1ng m\u1ee9c ban \u0111\u1ea7u. T\u1ed5ng th\u1ec3: 1,4 mm\/s.<\/p>\n<\/p><\/div>\n<div class=\"example-block\">\n<div class=\"example-title\">Tr\u01b0\u1eddng h\u1ee3p 3: \u0110\u1ed9ng c\u01a1 m\u00e1y n\u00e9n \u2014 \u0110i\u1ec7n hay c\u01a1 kh\u00ed?<\/div>\n<p><strong>M\u00e1y m\u00f3c:<\/strong> \u0110\u1ed9ng c\u01a1 c\u1ea3m \u1ee9ng 4 c\u1ef1c, 50 Hz, t\u1ed1c \u0111\u1ed9 1485 v\u00f2ng\/ph\u00fat d\u1eabn \u0111\u1ed9ng m\u00e1y n\u00e9n kh\u00ed tr\u1ee5c v\u00edt. \u0110\u1ed9 rung t\u0103ng t\u1eeb 2,0 l\u00ean 5,5 mm\/s trong v\u00f2ng 3 th\u00e1ng.<\/p>\n<p><strong>Ph\u1ed5:<\/strong> \u0110\u1ec9nh tr\u1ed9i \u1edf 100 Hz (= 2FL). Ngo\u00e0i ra: 1\u00d7 \u1edf 24,75 Hz = 1,2 mm\/s, c\u00e1c d\u1ea3i bi\u00ean xung quanh 1\u00d7 v\u1edbi kho\u1ea3ng c\u00e1ch \u00b11,0 Hz.<\/p>\n<p><strong>B\u00e0i ki\u1ec3m tra ch\u00ednh:<\/strong> M\u1ea5t \u0111i\u1ec7n \u2014 \u0111\u1ec9nh t\u1ea7n s\u1ed1 100 Hz gi\u1ea3m xu\u1ed1ng b\u1eb1ng kh\u00f4ng trong v\u00f2ng m\u1ed9t v\u00f2ng quay. C\u00e1c d\u1ea3i t\u1ea7n ph\u1ee5 1\u00d7 v\u1eabn t\u1ed3n t\u1ea1i trong qu\u00e1 tr\u00ecnh gi\u1ea3m t\u1ed1c.<\/p>\n<p><strong>Ch\u1ea9n \u0111o\u00e1n:<\/strong> Hai v\u1ea5n \u0111\u1ec1: (1) \u0110i\u1ec7n \u2014 \u0111\u1ed9 l\u1ec7ch t\u00e2m stato g\u00e2y ra 2FL. (2) C\u01a1 kh\u00ed \u2014 1\u00d7 d\u1ea3i bi\u00ean \u1edf \u00b11,0 Hz (= t\u1ea7n s\u1ed1 \u0111i qua c\u1ef1c \u0111\u1ed1i v\u1edbi \u0111\u1ed9ng c\u01a1 4 c\u1ef1c v\u1edbi \u0111\u1ed9 tr\u01b0\u1ee3t 1,0%) cho th\u1ea5y khuy\u1ebft t\u1eadt thanh r\u00f4to \u0111ang ph\u00e1t tri\u1ec3n.<\/p>\n<p><strong>Ho\u1ea1t \u0111\u1ed9ng:<\/strong> \u0110\u1ed9ng c\u01a1 \u0111\u01b0\u1ee3c g\u1eedi \u0111i qu\u1ea5n l\u1ea1i. \u0110\u00e3 x\u00e1c nh\u1eadn: 2 thanh r\u00f4to b\u1ecb g\u00e3y + \u0111\u1ed9 l\u1ec7ch t\u00e2m stato do \u0111\u1ed9 v\u00f5ng c\u1ee7a \u0111\u1ebf. Sau khi qu\u1ea5n l\u1ea1i v\u00e0 c\u0103n ch\u1ec9nh: \u0111\u1ed9 rung 1,6 mm\/gi\u00e2y.<\/p>\n<\/p><\/div>\n<div class=\"info-box success\">\n<div class=\"box-title\">Thi\u1ebft b\u1ecb Vibromera d\u00f9ng cho ph\u00e2n t\u00edch h\u00e0i<\/div>\n<p>The <a href=\"https:\/\/vibromera.eu\/vi\/san-pham\/balanset-1\/\">Balanset-1A<\/a> and <a href=\"https:\/\/vibromera.eu\/vi\/san-pham\/balanset-4\/\">Balanset-4<\/a> cung c\u1ea5p th\u1eddi gian th\u1ef1c <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/fft\/\">Ph\u00e2n t\u00edch ph\u1ed5 FFT<\/a> V\u1edbi t\u00ednh n\u0103ng theo d\u00f5i con tr\u1ecf h\u00e0i, cho ph\u00e9p nh\u1eadn d\u1ea1ng t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng c\u00e1c d\u1ea1ng 1\u00d7, 2\u00d7, 3\u00d7 v\u00e0 ch\u1ea9n \u0111o\u00e1n l\u1ed7i. C\u00e1c thi\u1ebft b\u1ecb n\u00e0y k\u1ebft h\u1ee3p ph\u00e2n t\u00edch rung \u0111\u1ed9ng \u0111\u1ec3 ch\u1ea9n \u0111o\u00e1n v\u00e0 c\u00e2n b\u1eb1ng ch\u00ednh x\u00e1c. <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/balancing\/\">c\u00e2n b\u1eb1ng<\/a> \u0110\u1ec3 kh\u1eafc ph\u1ee5c \u2014 x\u00e1c \u0111\u1ecbnh v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i quy\u1ebft n\u00f3 b\u1eb1ng m\u1ed9t c\u00f4ng c\u1ee5 duy nh\u1ea5t.<\/p>\n<\/p><\/div>\n<hr style=\"margin: 48px 0 24px; border: none; border-top: 1px solid var(--border-light);\">\n<p><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/\">\u2190 Tr\u1edf l\u1ea1i M\u1ee5c l\u1ee5c Thu\u1eadt ng\u1eef<\/a><\/p>\n<\/article>\n<p>      <!-- TOC SIDEBAR --><\/p>\n<aside class=\"toc-sidebar\">\n<div class=\"toc-box\">\n<h3>Tr\u00ean Trang n\u00e0y<\/h3>\n<p>          <a href=\"#calculator\">M\u00e1y t\u00ednh h\u00e0i h\u00f2a<\/a><br \/>\n          <a href=\"#diagnostic-cards\">Th\u1ebb m\u1eabu l\u1ed7i<\/a><br \/>\n          <a href=\"#diagnostic-table\">B\u1ea3ng ch\u1ea9n \u0111o\u00e1n<\/a><br \/>\n          <a href=\"#definition\">S\u1ef1 \u0111\u1ecbnh ngh\u0129a<\/a><br \/>\n          <a href=\"#why-generated\">T\u1ea1i sao l\u1ea1i \u0111\u01b0\u1ee3c t\u1ea1o ra?<\/a><br \/>\n          <a class=\"sub\" href=\"#why-generated\">\u0110\u1ecbnh l\u00fd Fourier<\/a><br \/>\n          <a class=\"sub\" href=\"#why-generated\">C\u01a1 ch\u1ebf v\u1eadt l\u00fd<\/a><br \/>\n          <a href=\"#fault-signatures\">D\u1ea5u hi\u1ec7u l\u1ed7i<\/a><br \/>\n          <a class=\"sub\" href=\"#fault-signatures\">1\u00d7 \u2014 M\u1ea5t c\u00e2n b\u1eb1ng<\/a><br \/>\n          <a class=\"sub\" href=\"#fault-signatures\">2\u00d7 \u2014 L\u1ec7ch tr\u1ee5c<\/a><br \/>\n          <a class=\"sub\" href=\"#fault-signatures\">Nhi\u1ec1u \u00d7 \u2014 S\u1ef1 l\u1ecfng l\u1ebbo<\/a><br \/>\n          <a class=\"sub\" href=\"#fault-signatures\">Tr\u1ee5c cong, ma s\u00e1t, \u0111i\u1ec7n<\/a><br \/>\n          <a href=\"#non-synchronous\">\u0110\u1ec9nh kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/a><br \/>\n          <a href=\"#analysis-guide\">H\u01b0\u1edbng d\u1eabn ph\u00e2n t\u00edch (6 b\u01b0\u1edbc)<\/a><br \/>\n          <a href=\"#case-studies\">Nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p<\/a>\n        <\/div>\n<div class=\"toc-box\" style=\"margin-top: 24px; background: var(--navy); border-color: var(--navy);\">\n<h3 style=\"color: var(--white);\">Thi\u1ebft b\u1ecb Vibromera<\/h3>\n<p style=\"color: rgba(255,255,255,0.6); font-size: 13px; margin-bottom: 12px;\">Ph\u00e2n t\u00edch ph\u1ed5 FFT di \u0111\u1ed9ng + c\u00e2n b\u1eb1ng ch\u00ednh x\u00e1c trong m\u1ed9t thi\u1ebft b\u1ecb duy nh\u1ea5t.<\/p>\n<p>          <a href=\"https:\/\/vibromera.eu\/vi\/san-pham\/balanset-1\/\" style=\"display: block; padding: 8px 14px; background: var(--blue); color: white; border-radius: 6px; text-align: center; font-weight: 600; font-size: 14px; text-decoration: none; margin-bottom: 8px; border-left: none;\">Balanset-1A \u2192<\/a><br \/>\n          <a href=\"https:\/\/vibromera.eu\/vi\/san-pham\/balanset-4\/\" style=\"display: block; padding: 8px 14px; background: rgba(255,255,255,0.1); color: white; border-radius: 6px; text-align: center; font-weight: 600; font-size: 14px; text-decoration: none; border: 1px solid rgba(255,255,255,0.2); border-left: none;\">Balanset-4 \u2192<\/a>\n        <\/div>\n<\/aside><\/div>\n<\/p><\/div>\n<p><\/main><\/p>\n<p><!-- SHOP CTA --><\/p>\n<section class=\"shop-cta\">\n<div class=\"container\">\n<h2>Ph\u00e2n t\u00edch v\u00e0 c\u00e2n b\u1eb1ng rung \u0111\u1ed9ng chuy\u00ean nghi\u1ec7p<\/h2>\n<p>Ch\u1ea9n \u0111o\u00e1n c\u00e1c m\u1eabu s\u00f3ng h\u00e0i v\u00e0 c\u00e2n b\u1eb1ng rotor t\u1ea1i ch\u1ed7 b\u1eb1ng c\u00e1c thi\u1ebft b\u1ecb di \u0111\u1ed9ng c\u1ee7a Vibromera \u2014 ph\u1ed5 FFT, \u0111o pha, v\u00e0 c\u00e2n b\u1eb1ng tu\u00e2n th\u1ee7 ISO trong m\u1ed9t thi\u1ebft b\u1ecb.<\/p>\n<p>    <a href=\"https:\/\/vibromera.eu\/vi\/shop\/\" class=\"cta-btn\">Xem thi\u1ebft b\u1ecb \u2192<\/a>\n  <\/div>\n<\/section>\n<p><!-- FOOTER --><\/p>\n<footer class=\"page-footer\">\n<div class=\"container\">\n<p><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/\">\u2190 Tr\u1edf l\u1ea1i m\u1ee5c Thu\u1eadt ng\u1eef<\/a> &nbsp;|&nbsp; <a href=\"https:\/\/vibromera.eu\/vi\/\">vibromera.eu<\/a><\/p>\n<\/p><\/div>\n<\/footer>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/\">\u2190 Quay l\u1ea1i M\u1ee5c l\u1ee5c ch\u00ednh<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u v\u1ec1 s\u00f3ng h\u00e0i trong ph\u00e2n t\u00edch rung \u0111\u1ed9ng. Hi\u1ec3u c\u00e1ch c\u00e1c b\u1ed9i s\u1ed1 nguy\u00ean c\u1ee7a t\u1ea7n s\u1ed1 c\u01a1 b\u1ea3n \u0111\u01b0\u1ee3c t\u1ea1o ra v\u00e0 ch\u00fang bi\u1ec3u th\u1ecb \u0111i\u1ec1u g\u00ec v\u1ec1 t\u00ecnh tr\u1ea1ng m\u00e1y m\u00f3c, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111\u1ed9 l\u1ec7ch v\u00e0 \u0111\u1ed9 l\u1ecfng l\u1ebbo.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-136","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/136","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":5,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/136\/revisions"}],"predecessor-version":[{"id":101731,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/136\/revisions\/101731"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/media?parent=136"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/categories?post=136"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/tags?post=136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}