{"id":44,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/band-pass-filter\/"},"modified":"2026-05-23T22:47:02","modified_gmt":"2026-05-23T22:47:02","slug":"band-pass-filter","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/vi\/glossary\/band-pass-filter\/","title":{"rendered":"B\u1ed9 l\u1ecdc th\u00f4ng d\u1ea3i l\u00e0 g\u00ec? L\u1ef1a ch\u1ecdn d\u1ea3i t\u1ea7n s\u1ed1"},"content":{"rendered":"<h1>Hi\u1ec3u v\u1ec1 b\u1ed9 l\u1ecdc th\u00f4ng d\u1ea3i<\/h1>\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\/44?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\/44?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\/44?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\/44?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\/44?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\/44?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\/44?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\/44?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\/44?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\/44?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\/44?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\/44?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\/44?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\/44?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>A <strong>b\u1ed9 l\u1ecdc th\u00f4ng d\u1ea3i<\/strong> (BPF) l\u00e0 m\u1ed9t ph\u1ea7n t\u1eed x\u1eed l\u00fd t\u00edn hi\u1ec7u l\u1ef1a ch\u1ecdn t\u1ea7n s\u1ed1 cho ph\u00e9p <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/vibration\/\">rung \u0111\u1ed9ng<\/a> c\u00e1c th\u00e0nh ph\u1ea7n trong m\u1ed9t d\u1ea3i t\u1ea7n s\u1ed1 \u0111\u01b0\u1ee3c ch\u1ecdn \u0111i qua trong khi l\u00e0m gi\u1ea3m m\u1ecdi th\u1ee9 c\u1ea3 d\u01b0\u1edbi v\u00e0 tr\u00ean d\u1ea3i \u0111\u00f3. V\u1ec1 b\u1ea3n ch\u1ea5t, n\u00f3 l\u00e0 s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a m\u1ed9t <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/high-pass-filter\/\">b\u1ed9 l\u1ecdc th\u00f4ng cao<\/a> (ch\u1eb7n c\u00e1c t\u1ea7n s\u1ed1 th\u1ea5p) v\u00e0 m\u1ed9t <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/low-pass-filter\/\">b\u1ed9 l\u1ecdc th\u00f4ng th\u1ea5p<\/a> (ch\u1eb7n c\u00e1c t\u1ea7n s\u1ed1 cao), t\u1ea1o th\u00e0nh m\u1ed9t \"c\u1eeda s\u1ed5\" ch\u1ec9 cho ph\u00e9p m\u1ed9t d\u1ea3i trung b\u00ecnh \u0111\u01b0\u1ee3c ch\u1ecdn. M\u1ed7i b\u1ed9 l\u1ecdc d\u1ea3i th\u00f4ng \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 b\u1eb1ng ba s\u1ed1: t\u1ea7n s\u1ed1 trung t\u00e2m c\u1ee7a n\u00f3, b\u0103ng th\u00f4ng c\u1ee7a n\u00f3 v\u00e0 b\u1eadc ho\u1eb7c \u0111\u1ed9 d\u1ed1c c\u1ee7a n\u00f3. Trong c\u00f4ng vi\u1ec7c rung \u0111\u1ed9ng, BPF kh\u00f4ng th\u1ec3 thi\u1ebfu cho <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/envelope-analysis\/\">ph\u00e2n t\u00edch \u0111\u01b0\u1eddng bao<\/a>, \u0111\u1ec3 ch\u1ea9n \u0111o\u00e1n t\u1eadp trung v\u00e0o m\u1ed9t d\u1ea3i c\u1ee5 th\u1ec3, v\u00e0 \u0111\u1ec3 n\u00e2ng c\u00e1c t\u00edn hi\u1ec7u y\u1ebfu ra kh\u1ecfi ti\u1ebfng \u1ed3n b\u1eb1ng c\u00e1ch lo\u1ea1i b\u1ecf m\u1ecdi th\u1ee9 b\u00ean ngo\u00e0i d\u1ea3i quan t\u00e2m. N\u00f3 l\u00e0 m\u1ed9t trong nh\u1eefng c\u00f4ng c\u1ee5 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u nh\u1ea5t trong h\u1ed9p c\u00f4ng c\u1ee5 r\u1ed9ng h\u01a1n c\u1ee7a <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/signal-filtering\/\">l\u1ecdc t\u00edn hi\u1ec7u<\/a>.<\/p>\n<h2>1. Th\u00f4ng S\u1ed1 L\u1ecdc<\/h2>\n<h3>T\u1ea7n S\u1ed1 Trung T\u00e2m (f\u2080)<\/h3>\n<ul>\n<li>Trung \u0111i\u1ec3m c\u1ee7a d\u1ea3i th\u00f4ng qua v\u00e0 \u0111i\u1ec3m ph\u1ea3n \u1ee9ng b\u1ed9 l\u1ecdc t\u1ed1i \u0111a.<\/li>\n<li>\u0110\u01b0\u1ee3c ch\u1ecdn \u0111\u1ec3 kh\u1edbp v\u1edbi n\u1ed9i dung t\u1ea7n s\u1ed1 quan t\u00e2m \u2014 th\u01b0\u1eddng l\u00e0 m\u1ed9t t\u1ea7n s\u1ed1 c\u1ed9ng h\u01b0\u1edfng ho\u1eb7c l\u1ed7i \u0111\u00e3 bi\u1ebft.<\/li>\n<\/ul>\n<h3>B\u0103ng th\u00f4ng (BW)<\/h3>\n<ul>\n<li><strong>S\u1ef1 \u0111\u1ecbnh ngh\u0129a:<\/strong> kho\u1ea3ng t\u1ea7n s\u1ed1 gi\u1eefa c\u00e1c \u0111i\u1ec3m \u22123 dB, f<sub>cao<\/sub> \u2212 f<sub>th\u1ea5p<\/sub>.<\/li>\n<li><strong>D\u1ea3i h\u1eb9p:<\/strong> BW &lt; 10% c\u1ee7a f\u2080 \u2014 l\u1ef1a ch\u1ecdn cao.<\/li>\n<li><strong>B\u0103ng r\u1ed9ng:<\/strong> BW &gt; 50% c\u1ee7a f\u2080 \u2014 \u00edt ch\u1ecdn l\u1ecdc h\u01a1n.<\/li>\n<li><strong>H\u1ec7 s\u1ed1 Q:<\/strong> Q = f\u2080 \/ BW; Q c\u00e0ng cao th\u00ec b\u1ed9 l\u1ecdc c\u00e0ng h\u1eb9p v\u00e0 c\u00f3 t\u00ednh ch\u1ecdn l\u1ecdc c\u00e0ng cao.<\/li>\n<\/ul>\n<h3>\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a b\u1ed9 l\u1ecdc<\/h3>\n<ul>\n<li><strong>T\u1ea7n s\u1ed1 c\u1eaft d\u01b0\u1edbi (f<sub>th\u1ea5p<\/sub>):<\/strong> n\u01a1i ph\u1ea7n s\u01b0\u1eddn d\u01b0\u1edbi gi\u1ea3m xu\u1ed1ng \u22123 dB.<\/li>\n<li><strong>T\u1ea7n s\u1ed1 c\u1eaft tr\u00ean (f<sub>cao<\/sub>):<\/strong> n\u01a1i ph\u1ea7n s\u01b0\u1eddn tr\u00ean gi\u1ea3m xu\u1ed1ng \u22123 dB.<\/li>\n<li><strong>H\u1ec7 s\u1ed1 h\u00ecnh d\u1ea1ng:<\/strong> t\u1ec9 s\u1ed1 gi\u1eefa \u0111\u1ed9 r\u1ed9ng d\u1ea3i ng\u0103n ch\u1eb7n v\u00e0 d\u1ea3i th\u00f4ng qua \u2014 th\u01b0\u1edbc \u0111o m\u1ee9c \u0111\u1ed9 s\u1eafc n\u00e9t m\u00e0 b\u1ed9 l\u1ecdc c\u1eaft.<\/li>\n<\/ul>\n<h2>2. C\u00e1c \u1ee8ng D\u1ee5ng trong Ph\u00e2n T\u00edch Rung \u0110\u1ed9ng<\/h2>\n<h3>2.1 Ph\u00e2n t\u00edch bao \u2014 \u1ee8ng d\u1ee5ng ch\u00ednh<\/h3>\n<p>B\u1ed9 l\u1ecdc d\u1ea3i th\u00f4ng qua l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean quan tr\u1ecdng trong vi\u1ec7c ph\u00e1t hi\u1ec7n khi\u1ebfm khuy\u1ebft v\u00f2ng bi l\u0103n:<\/p>\n<ul>\n<li><strong>L\u1ef1a ch\u1ecdn d\u1ea3i:<\/strong> th\u01b0\u1eddng l\u00e0 500 Hz\u201310 kHz ho\u1eb7c 1 kHz\u201320 kHz.<\/li>\n<li><strong>M\u1ee5c \u0111\u00edch:<\/strong> c\u00f4 l\u1eadp c\u00e1c c\u1ed9ng h\u01b0\u1edfng c\u1ea5u tr\u00fac t\u1ea7n s\u1ed1 cao m\u00e0 c\u00e1c t\u00e1c \u0111\u1ed9ng v\u00f2ng bi k\u00edch th\u00edch.<\/li>\n<li><strong>Qu\u00e1 tr\u00ecnh:<\/strong> BPF \u2192 ph\u00e1t hi\u1ec7n bao (<a href=\"https:\/\/vibromera.eu\/vi\/glossary\/demodulation\/\">gi\u1ea3i \u0111i\u1ec1u ch\u1ebf<\/a>) \u2192 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/fft\/\">FFT<\/a> c\u1ee7a bao.<\/li>\n<li><strong>K\u1ebft qu\u1ea3:<\/strong> c\u00e1i <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/bearing-fault-frequencies\/\">t\u1ea7n s\u1ed1 l\u1ed7i \u1ed5 tr\u1ee5c<\/a> n\u1ed5i b\u1eadt r\u00f5 r\u00e0ng trong <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/envelope-spectrum\/\">ph\u1ed5 bao<\/a>.<\/li>\n<\/ul>\n<h3>2.2 Ph\u00e2n T\u00edch D\u1ea3i C\u1ed9ng H\u01b0\u1edfng<\/h3>\n<p>L\u1ecdc ch\u1eb7t ch\u1ebd xung quanh m\u1ed9t c\u1ea5u tr\u00fac ho\u1eb7c mang <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/resonance\/\">s\u1ef1 c\u1ed9ng h\u01b0\u1edfng<\/a> c\u00f4 l\u1eadp n\u0103ng l\u01b0\u1ee3ng \u1edf ch\u1ebf \u0111\u1ed9 \u0111\u00f3 t\u1eeb t\u1ea5t c\u1ea3 c\u00e1c t\u1ea7n s\u1ed1 kh\u00e1c, cho ph\u00e9p b\u1ea1n \u0111\u00e1nh gi\u00e1 k\u00edch th\u00edch v\u00e0 ph\u1ea3n \u1ee9ng \u1edf m\u1ed9t c\u1ed9ng h\u01b0\u1edfng c\u1ee5 th\u1ec3 \u2014 m\u1ed9t c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 m\u1ea1nh m\u1ebd trong kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 c\u1ed9ng h\u01b0\u1edfng.<\/p>\n<h3>2.3 C\u00f4 l\u1eadp D\u1ea3i T\u1ea7n s\u1ed1<\/h3>\n<p>M\u1ed9t BPF c\u00f3 th\u1ec3 t\u1eadp trung v\u00e0o d\u1ea3i ch\u1ea9n \u0111o\u00e1n \u0111\u01b0\u1ee3c ch\u1ecdn \u2014 v\u00ed d\u1ee5 10\u2013100 Hz cho c\u00f4ng vi\u1ec7c t\u1ea7n s\u1ed1 th\u1ea5p \u2014 lo\u1ea1i b\u1ecf \u0111\u1ed9 tr\u00f4i t\u1ea7n s\u1ed1 th\u1ea5p v\u00e0 nhi\u1ec5u t\u1ea7n s\u1ed1 cao \u0111\u1ec3 l\u00e0m r\u00f5 c\u00e1c th\u00e0nh ph\u1ea7n b\u1ea1n quan t\u00e2m.<\/p>\n<h3>2.4 C\u00f4 l\u1eadp L\u01b0\u1edbi B\u00e1nh R\u0103ng<\/h3>\n<p>C\u0103n gi\u1eefa d\u1ea3i tr\u00ean <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/gear-mesh-frequency\/\">t\u1ea7n s\u1ed1 \u0103n kh\u1edbp b\u00e1nh r\u0103ng<\/a> chuy\u1ec3n \u0111o\u1ea1n \u0111\u00f3 v\u00e0 c\u00e1c d\u1ea3i ph\u1ee5 c\u1ee7a n\u00f3 trong khi lo\u1ea1i b\u1ecf c\u00e1c giai \u0111o\u1ea1n b\u00e1nh r\u0103ng kh\u00e1c v\u00e0 t\u1ea7n s\u1ed1 v\u00f2ng bi, cho ph\u00e9p ph\u00e2n t\u00edch b\u00e1nh r\u0103ng t\u1eadp trung. Khi m\u1ee5c \u0111\u00edch l\u00e0 theo d\u00f5i t\u1ed1c \u0111\u1ed9 thay \u0111\u1ed5i thay v\u00ec d\u1ea3i c\u1ed1 \u0111\u1ecbnh, m\u1ed9t <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/tracking-filter\/\">b\u1ed9 l\u1ecdc theo d\u00f5i<\/a> th\u1ef1c hi\u1ec7n c\u00e1ch c\u00f4 l\u1eadp t\u01b0\u01a1ng t\u1ef1 tham chi\u1ebfu \u0111\u1ebfn b\u1eadc tr\u1ee5c.<\/p>\n<h2>3. Thi\u1ebft k\u1ebf B\u1ed9 l\u1ecdc D\u1ea3i th\u00f4ng<\/h2>\n<h3>B\u1ed9 l\u1ecdc th\u00f4ng th\u1ea5p v\u00e0 th\u00f4ng cao x\u1ebfp t\u1ea7ng<\/h3>\n<p>Vi\u1ec7c th\u1ef1c hi\u1ec7n ph\u1ed5 bi\u1ebfn nh\u1ea5t ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 k\u1ebft n\u1ed1i hai b\u1ed9 l\u1ecdc \u0111\u01a1n gi\u1ea3n h\u01a1n:<\/p>\n<ul>\n<li>M\u1ed9t ph\u1ea7n th\u00f4ng cao ch\u1eb7n m\u1ecdi th\u1ee9 d\u01b0\u1edbi f<sub>th\u1ea5p<\/sub>.<\/li>\n<li>M\u1ed9t ph\u1ea7n th\u00f4ng th\u1ea5p ch\u1eb7n m\u1ecdi th\u1ee9 tr\u00ean f<sub>cao<\/sub>.<\/li>\n<li>N\u1ed1i ti\u1ebfp ch\u00fang t\u1ea1o th\u00e0nh d\u1ea3i th\u00f4ng qua, m\u1ed7i ph\u1ea7n g\u00f3p ph\u1ea7n v\u00e0o t\u00ednh ch\u1ecdn l\u1ecdc t\u1ed5ng th\u1ec3.<\/li>\n<\/ul>\n<h3>Thi\u1ebft k\u1ebf th\u00f4ng d\u1ea3i tr\u1ef1c ti\u1ebfp<\/h3>\n<p>Ngo\u00e0i ra, b\u1ed9 l\u1ecdc \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a nh\u01b0 m\u1ed9t giai \u0111o\u1ea1n duy nh\u1ea5t thay v\u00ec m\u1ed9t t\u1ea7ng ch\u1ed3ng. \u0110i\u1ec1u n\u00e0y ph\u1ee9c t\u1ea1p h\u01a1n \u0111\u1ec3 thi\u1ebft k\u1ebf nh\u01b0ng c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c \u0111\u1eb7c t\u00ednh t\u1ed1t h\u01a1n, v\u00e0 n\u00f3 \u0111\u01b0\u1ee3c d\u00e0nh ri\u00eang cho c\u00e1c \u1ee9ng d\u1ee5ng chuy\u00ean bi\u1ec7t. M\u1ed9t h\u1ecd h\u00e0ng g\u1ea7n g\u0169i l\u00e0 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/notch-filter\/\">b\u1ed9 l\u1ecdc ch\u1eafn d\u1ea3i<\/a>, th\u1ef1c hi\u1ec7n t\u00e1c v\u1ee5 ng\u01b0\u1ee3c l\u1ea1i \u2014 lo\u1ea1i b\u1ecf m\u1ed9t d\u1ea3i t\u1ea7n s\u1ed1 h\u1eb9p trong khi cho ph\u00e9p m\u1ecdi th\u1ee9 kh\u00e1c \u0111i qua.<\/p>\n<h2>4. Nh\u1eefng C\u00e2n nh\u1eafc Th\u1ef1c t\u1ebf<\/h2>\n<h3>S\u1ef1 C\u00e2n b\u1eb1ng B\u0103ng th\u00f4ng<\/h3>\n<p><strong>B\u0103ng th\u00f4ng h\u1eb9p<\/strong> mang l\u1ea1i kh\u1ea3 n\u0103ng l\u1ef1a ch\u1ecdn t\u1ed1t h\u01a1n v\u00e0 \u0111\u00e0n \u00e1p m\u1ea1nh h\u01a1n c\u00e1c t\u1ea7n s\u1ed1 l\u00e2n c\u1eadn, nh\u01b0ng c\u00f3 th\u1ec3 b\u1ecf l\u1ee1 s\u1ef1 tr\u00f4i d\u1ea1t t\u1ea7n s\u1ed1 v\u00e0 y\u00eau c\u1ea7u hi\u1ec7u ch\u1ec9nh ch\u00ednh x\u00e1c \u2014 t\u1ed1t nh\u1ea5t khi t\u1ea7n s\u1ed1 c\u1ea7n quan t\u00e2m \u0111\u01b0\u1ee3c bi\u1ebft v\u00e0 \u1ed5n \u0111\u1ecbnh. <strong>B\u0103ng th\u00f4ng r\u1ed9ng<\/strong> ghi l\u1ea1i s\u1ef1 bi\u1ebfn thi\u00ean t\u1ea7n s\u1ed1 v\u00e0 r\u1ea5t \u00edt nh\u1ea1y c\u1ea3m v\u1edbi hi\u1ec7u ch\u1ec9nh, v\u1edbi chi ph\u00ed l\u00e0 \u0111\u00e0n \u00e1p y\u1ebfu h\u01a1n c\u00e1c n\u1ed9i dung kh\u00f4ng mong mu\u1ed1n l\u00e2n c\u1eadn \u2014 t\u1ed1t nh\u1ea5t khi t\u1ea7n s\u1ed1 dao \u0111\u1ed9ng ho\u1eb7c m\u1ed9t ph\u1ea1m vi to\u00e0n b\u1ed9 c\u00f3 \u00fd ngh\u0129a.<\/p>\n<h3>L\u1ef1a ch\u1ecdn D\u1ea3i cho Ph\u00e2n t\u00edch Bao<\/h3>\n<ul>\n<li><strong>C\u00e1c d\u1ea3i t\u1ea7n \u0111i\u1ec3n h\u00ecnh:<\/strong> 500\u20132.000 Hz, 1.000\u20135.000 Hz v\u00e0 5.000\u201320.000 Hz.<\/li>\n<li><strong>L\u1ef1a ch\u1ecdn:<\/strong> ch\u1ecdn d\u1ea3i c\u00f3 s\u1ef1 k\u00edch th\u00edch c\u1ed9ng h\u01b0\u1edfng \u1ed5 tr\u1ee5c m\u1ea1nh nh\u1ea5t.<\/li>\n<li><strong>X\u00e1c minh:<\/strong> ki\u1ec3m tra gia t\u1ed1c th\u00f4 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/spectrum\/\">ph\u1ed5<\/a> \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed c\u1ed9ng h\u01b0\u1edfng \u0111\u00f3 tr\u01b0\u1edbc ti\u00ean.<\/li>\n<li><strong>T\u1ed1i \u01b0u h\u00f3a:<\/strong> \u0111i\u1ec1u ch\u1ec9nh d\u1ea3i \u0111\u1ec3 t\u1ed1i \u0111a h\u00f3a t\u00edn hi\u1ec7u khi\u1ebfm khuy\u1ebft \u1ed5 tr\u1ee5c.<\/li>\n<\/ul>\n<h2>5. Hi\u1ec7u \u1ee9ng B\u1ed9 l\u1ecdc tr\u00ean T\u00edn hi\u1ec7u<\/h2>\n<h3>T\u00e1c \u0111\u1ed9ng S\u00f3ng Th\u1eddi gian<\/h3>\n<p>M\u1ed9t d\u1ea3i th\u00f4ng l\u1ecdc <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/time-waveform\/\">d\u1ea1ng s\u00f3ng th\u1eddi gian<\/a> ch\u1ec9 hi\u1ec3n th\u1ecb n\u1ed9i dung d\u1ea3i th\u00f4ng qua. V\u1edbi d\u1ea3i h\u1eb9p, n\u00f3 xu\u1ea5t hi\u1ec7n nh\u01b0 m\u1ed9t s\u00f3ng mang \u0111i\u1ec1u ch\u1ebf; bi\u1ebfn thi\u00ean t\u1ea7n s\u1ed1 th\u1ea5p v\u00e0 nhi\u1ec5u t\u1ea7n s\u1ed1 cao bi\u1ebfn m\u1ea5t, c\u00f3 th\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a \u0111\u00e1ng k\u1ec3 vi\u1ec7c di\u1ec5n gi\u1ea3i.<\/p>\n<h3>Hi\u1ec7u \u1ee9ng ph\u1ed5<\/h3>\n<p>Trong ph\u1ed5, bi\u00ean \u0111\u1ed9 d\u1ea3i th\u00f4ng qua \u0111\u01b0\u1ee3c b\u1ea3o to\u00e0n trong khi bi\u00ean \u0111\u1ed9 d\u1ea3i d\u1eebng b\u1ecb c\u1eaft b\u1eb1ng kho\u1ea3ng 40\u201380 dB. K\u1ebft qu\u1ea3 l\u00e0 hi\u1ec3n th\u1ecb s\u1ea1ch h\u01a1n t\u1eadp trung v\u00e0o d\u1ea3i c\u1ea7n quan t\u00e2m, v\u1edbi s\u00e0n nhi\u1ec5u th\u1ea5p h\u01a1n \u1edf b\u1ea5t k\u1ef3 n\u01a1i n\u00e0o m\u00e0 nhi\u1ec5u n\u1eb1m ngo\u00e0i d\u1ea3i th\u00f4ng qua.<\/p>\n<h2>6. K\u1ef9 thu\u1eadt s\u1ed1 so v\u1edbi T\u01b0\u01a1ng t\u1ef1, v\u00e0 D\u1ea3i theo Ph\u1ea1m vi T\u1ea7n s\u1ed1<\/h2>\n<h3>B\u1ed9 l\u1ecdc K\u1ef9 thu\u1eadt s\u1ed1 so v\u1edbi T\u01b0\u01a1ng t\u1ef1<\/h3>\n<p><strong>T\u01b0\u01a1ng t\u1ef1<\/strong> b\u1ed9 l\u1ecdc th\u00f4ng d\u1ea3i \u0111\u01b0\u1ee3c tri\u1ec3n khai trong ph\u1ea7n c\u1ee9ng trong \u0111\u01b0\u1eddng d\u1eabn t\u00edn hi\u1ec7u, ho\u1ea1t \u0111\u1ed9ng theo th\u1eddi gian th\u1ef1c, c\u00f3 \u0111\u1eb7c t\u00ednh c\u1ed1 \u0111\u1ecbnh khi \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/aliasing\/\">ch\u1ed1ng r\u0103ng c\u01b0a (anti-aliasing)<\/a> v\u00e0 \u0111i\u1ec1u h\u00f2a t\u00edn hi\u1ec7u. <strong>K\u1ef9 thu\u1eadt s\u1ed1<\/strong> b\u1ed9 l\u1ecdc x\u1eed l\u00fd t\u00edn hi\u1ec7u trong ph\u1ea7n m\u1ec1m sau khi s\u1ed1 h\u00f3a, cung c\u1ea5p c\u00e1c tham s\u1ed1 c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng ho\u1eb7c lo\u1ea1i b\u1ecf ngay c\u1ea3 sau khi d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c thu th\u1eadp \u2014 \u0111\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao c\u00e1c thi\u1ebft b\u1ecb ph\u00e2n t\u00edch hi\u1ec7n \u0111\u1ea1i cung c\u1ea5p c\u00e1c t\u00f9y ch\u1ecdn BPF k\u1ef9 thu\u1eadt s\u1ed1 m\u1edf r\u1ed9ng.<\/p>\n<h3>C\u00e1c D\u1ea3i th\u00f4ng d\u1ee5ng theo Ph\u1ea1m vi<\/h3>\n<ul>\n<li><strong>T\u1ea7n s\u1ed1 th\u1ea5p (10\u2013200 Hz):<\/strong> ph\u00e2n t\u00edch m\u1ea5t c\u00e2n b\u1eb1ng v\u00e0 sai l\u1ec7ch, m\u00e1y m\u00f3c t\u1ed1c \u0111\u1ed9 th\u1ea5p v\u00e0 rung \u0111\u1ed9ng n\u1ec1n t\u1ea3ng ho\u1eb7c k\u1ebft c\u1ea5u.<\/li>\n<li><strong>T\u1ea7n s\u1ed1 trung b\u00ecnh (200\u20132.000 Hz):<\/strong> t\u1ea7n s\u1ed1 l\u01b0\u1edbi b\u00e1nh r\u0103ng, t\u1ea7n s\u1ed1 qua c\u00e1nh v\u00e0 l\u00e1, v\u00e0 t\u1ea7n s\u1ed1 l\u1ed7i \u1ed5 tr\u1ee5c th\u1ea5p h\u01a1n.<\/li>\n<li><strong>T\u1ea7n s\u1ed1 cao (2\u201340 kHz):<\/strong> ph\u00e2n t\u00edch bao khi\u1ebfm khuy\u1ebft \u1ed5 tr\u1ee5c, t\u00e1c \u0111\u1ed9ng t\u1ea7n s\u1ed1 cao v\u00e0 k\u00edch th\u00edch c\u1ed9ng h\u01b0\u1edfng \u1ed5 tr\u1ee5c.<\/li>\n<\/ul>\n<h2>7. L\u1ecdc D\u1ea3i T\u1ea7n S\u1ed1 T\u1ea1i Hi\u1ec7n Tr\u01b0\u1eddng<\/h2>\n<p>Trong th\u1ef1c ti\u1ec5n, b\u1ed9 l\u1ecdc d\u1ea3i t\u1ea7n s\u1ed1 hi\u1ebfm khi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ed9c l\u1eadp \u2014 n\u00f3 l\u00e0 m\u1ed9t t\u1ea7ng b\u00ean trong chu\u1ed7i \u0111o l\u01b0\u1eddng c\u0169ng th\u1ef1c hi\u1ec7n l\u1ea5y m\u1eabu, l\u1ecdc c\u1eeda s\u1ed5 v\u00e0 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u, v\u00ec v\u1eady d\u1ea3i \u0111\u01b0\u1ee3c ch\u1ecdn ph\u1ea3i n\u1eb1m trong d\u1ea3i t\u1ea7n s\u1ed1 l\u1ea5y m\u1eabu c\u1ee7a thi\u1ebft b\u1ecb&#8217;s. M\u1ed9t b\u1ed9 ph\u00e2n t\u00edch hai k\u00eanh di \u0111\u1ed9ng nh\u01b0 <a href=\"https:\/\/vibromera.eu\/vi\/san-pham\/balanset-1\/\">Balanset-1A<\/a> \u0111o vibration t\u1eeb kho\u1ea3ng 5 Hz \u0111\u1ebfn 1 kHz v\u00e0 ph\u00e2n gi\u1ea3i \u0111\u01b0\u1ee3c 1\u00d7 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/phase\/\">bi\u00ean \u0111\u1ed9 v\u00e0 pha<\/a> c\u1ea7n thi\u1ebft cho c\u00e2n b\u1eb1ng t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng; k\u1ef9 thu\u1eadt l\u1ecdc d\u1ea3i t\u1ea7n s\u1ed1 v\u00e0 bao (envelope) sau \u0111\u00f3 b\u1ed5 sung quy tr\u00ecnh c\u00f4ng vi\u1ec7c \u0111\u00f3 khi k\u1ef9 s\u01b0 c\u1ea7n x\u00e1c nh\u1eadn li\u1ec7u m\u1ed9t khuy\u1ebft t\u1eadt v\u00f2ng bi t\u1ea7n s\u1ed1 cao, ch\u1ee9 kh\u00f4ng ph\u1ea3i \u0111\u01a1n gi\u1ea3n l\u00e0 m\u1ea5t c\u00e2n b\u1eb1ng, c\u00f3 ph\u1ea3i l\u00e0 ngu\u1ed3n g\u1ed1c th\u1ef1c c\u1ee7a v\u1ea5n \u0111\u1ec1. Khi thi\u1ebft l\u1eadp ph\u00e2n t\u00edch nh\u01b0 v\u1eady, <a href=\"https:\/\/vibromera.eu\/vi\/calculators\/fft-resolution-calculator\/\">M\u00e1y t\u00ednh \u0111\u1ed9 ph\u00e2n gi\u1ea3i FFT<\/a> gi\u00fap kh\u1edbp s\u1ed1 d\u00f2ng (line count) v\u00e0 d\u1ea3i t\u1ea7n s\u1ed1 v\u1edbi d\u1ea3i b\u1ea1n \u0111\u1ecbnh ki\u1ec3m tra, do \u0111\u00f3 c\u00e1c \u0111\u01b0\u1eddng khuy\u1ebft t\u1eadt (fault line) \u0111\u01b0\u1ee3c c\u00e1ch xa v\u00e0 c\u00e1c d\u1ea3i b\u00ean (sideband) kh\u00f4ng b\u1ecb tr\u1ed9n l\u1eabn. Th\u00e0nh th\u1ea1o vi\u1ec7c l\u1ef1a ch\u1ecdn l\u1ecdc d\u1ea3i t\u1ea7n s\u1ed1 \u2014 tr\u00ean h\u1ebft \u0111\u1ed1i v\u1edbi ph\u00e2n t\u00edch bao v\u00e0 c\u00f4 l\u1eadp d\u1ea3i t\u1ea7n s\u1ed1 \u2014 l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 tr\u00edch xu\u1ea5t th\u00f4ng tin ch\u1ea9n \u0111o\u00e1n r\u00f5 r\u00e0ng t\u1eeb ch\u1eef k\u00fd vibration ph\u1ee9c t\u1ea1p.<\/p>\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 b\u1ed9 l\u1ecdc th\u00f4ng d\u1ea3i trong ph\u00e2n t\u00edch rung \u0111\u1ed9ng, c\u00e1c c\u00f4ng c\u1ee5 x\u1eed l\u00fd t\u00edn hi\u1ec7u cho ph\u00e9p c\u00e1c t\u1ea7n s\u1ed1 trong m\u1ed9t d\u1ea3i t\u1ea7n \u0111\u01b0\u1ee3c ch\u1ecdn \u0111i qua trong khi ch\u1eb7n t\u1ea5t c\u1ea3 c\u00e1c t\u1ea7n s\u1ed1 kh\u00e1c, r\u1ea5t c\u1ea7n thi\u1ebft cho ph\u00e2n t\u00edch \u0111\u01b0\u1eddng bao.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-44","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/44","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":1,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/44\/revisions"}],"predecessor-version":[{"id":101372,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/44\/revisions\/101372"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/media?parent=44"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/categories?post=44"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/tags?post=44"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}