{"id":308,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/wavelet-analysis\/"},"modified":"2026-05-23T22:17:00","modified_gmt":"2026-05-23T22:17:00","slug":"wavelet-analysis","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/vi\/glossary\/wavelet-analysis\/","title":{"rendered":"Ph\u00e2n t\u00edch Wavelet trong ch\u1ea9n \u0111o\u00e1n rung \u0111\u1ed9ng l\u00e0 g\u00ec?"},"content":{"rendered":"<h1>Hi\u1ec3u v\u1ec1 ph\u00e2n t\u00edch Wavelet<\/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\/308?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\/308?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\/308?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\/308?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\/308?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\/308?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\/308?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\/308?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\/308?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\/308?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\/308?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\/308?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\/308?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\/308?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><strong>Ph\u00e2n t\u00edch Wavelet<\/strong> l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt x\u1eed l\u00fd t\u00edn hi\u1ec7u ti\u00ean ti\u1ebfn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e2n t\u00edch <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/vibration\/\">rung \u0111\u1ed9ng<\/a> c\u00e1c t\u00edn hi\u1ec7u c\u00f3 th\u00e0nh ph\u1ea7n t\u1ea7n s\u1ed1 thay \u0111\u1ed5i theo th\u1eddi gian. Kh\u00e1c v\u1edbi ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n th\u1ed1ng <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/fft\/\">Bi\u1ebfn \u0111\u1ed5i Fourier nhanh (FFT)<\/a>, v\u1ed1n ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi c\u00e1c t\u00edn hi\u1ec7u kh\u00f4ng \u0111\u1ed5i c\u00f3 th\u00e0nh ph\u1ea7n t\u1ea7n s\u1ed1 kh\u00f4ng \u0111\u1ed5i, ph\u00e2n t\u00edch s\u00f3ng nh\u1ecf l\u1ea1i c\u00f3 kh\u1ea3 n\u0103ng n\u1eafm b\u1eaft hi\u1ec7u qu\u1ea3 c\u00e1c s\u1ef1 ki\u1ec7n tho\u00e1ng qua, c\u00e1c c\u00fa s\u1ed1c v\u00e0 c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng kh\u00f4ng \u1ed5n \u0111\u1ecbnh kh\u00e1c. \u0110\u00e2y l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 chuy\u00ean d\u1ee5ng trong l\u0129nh v\u1ef1c <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/vibration-diagnostics\/\">ch\u1ea9n \u0111o\u00e1n rung \u0111\u1ed9ng<\/a> b\u1ed9 c\u00f4ng c\u1ee5 \u2014 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ch\u00ednh x\u00e1c khi ti\u00eau chu\u1ea9n <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/spectrum\/\">ph\u1ed5<\/a> ch\u01b0a \u0111\u1ea1t y\u00eau c\u1ea7u.<\/p>\n<p>C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3 l\u00e0 ph\u00e2n t\u00e1ch t\u00edn hi\u1ec7u th\u00e0nh m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c h\u00e0m c\u01a1 s\u1edf \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201cwavelets\u201d. M\u1ed7i wavelet l\u00e0 m\u1ed9t g\u00f3i s\u00f3ng ng\u1eafn, dao \u0111\u1ed9ng, c\u00f3 t\u00ednh c\u1ee5c b\u1ed9 c\u1ea3 v\u1ec1 th\u1eddi gian l\u1eabn t\u1ea7n s\u1ed1. T\u00ednh c\u1ee5c b\u1ed9 k\u00e9p n\u00e0y \u2014 t\u1ee9c l\u00e0 n\u1eafm b\u1eaft \u0111\u01b0\u1ee3c c\u1ea3 <em>G\u00ec<\/em> t\u1ea7n su\u1ea5t v\u00e0 <em>khi<\/em> \u2014 ch\u00ednh l\u00e0 y\u1ebfu t\u1ed1 mang l\u1ea1i s\u1ee9c m\u1ea1nh \u0111\u1eb7c tr\u01b0ng cho ph\u01b0\u01a1ng ph\u00e1p n\u00e0y.<\/p>\n<h2>1. \u0110\u1ecbnh ngh\u0129a: Ph\u00e2n t\u00edch Wavelet l\u00e0 g\u00ec?<\/h2>\n<p>Th\u01b0\u1eddng xuy\u00ean nh\u1ea5t <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/vibration-analysis\/\">Ph\u00e2n t\u00edch rung \u0111\u1ed9ng<\/a> gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng m\u00e1y ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ed1c \u0111\u1ed9 v\u00e0 t\u1ea3i \u1ed5n \u0111\u1ecbnh, do \u0111\u00f3 dao \u0111\u1ed9ng c\u1ee7a n\u00f3 l\u00e0 \u201ct\u0129nh\u201d v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 ch\u00ednh x\u00e1c b\u1eb1ng m\u1ed9t ph\u1ed5 duy nh\u1ea5t. Tuy nhi\u00ean, nhi\u1ec1u l\u1ed7i mang t\u00ednh ch\u1ec9 b\u00e1o cao nh\u1ea5t l\u1ea1i ho\u00e0n to\u00e0n kh\u00f4ng \u1ed5n \u0111\u1ecbnh: ch\u00fang l\u00e0 nh\u1eefng \u0111\u1ee3t n\u0103ng l\u01b0\u1ee3ng ng\u1eafn ng\u1ee7i xu\u1ea5t hi\u1ec7n r\u1ed3i bi\u1ebfn m\u1ea5t trong v\u00f2ng m\u1ed9t v\u00f2ng quay. Ph\u00e2n t\u00edch s\u00f3ng nh\u1ecf (wavelet) \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf d\u00e0nh ri\u00eang cho nh\u1eefng t\u00edn hi\u1ec7u nh\u01b0 v\u1eady. Thay v\u00ec ch\u1ec9 xem x\u00e9t c\u00e1c t\u1ea7n s\u1ed1 n\u00e0o xu\u1ea5t hi\u1ec7n tr\u00ean to\u00e0n b\u1ed9 b\u1ea3n ghi, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y di chuy\u1ec3n c\u00e1c s\u00f3ng nh\u1ecf c\u00f3 k\u00edch th\u01b0\u1edbc kh\u00e1c nhau d\u1ecdc theo <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/time-waveform\/\">d\u1ea1ng s\u00f3ng th\u1eddi gian<\/a>, nh\u1eb1m \u0111o l\u01b0\u1eddng m\u1ee9c \u0111\u1ed9 kh\u1edbp gi\u1eefa t\u1eebng th\u00e0nh ph\u1ea7n v\u1edbi t\u00edn hi\u1ec7u t\u1ea1i t\u1eebng th\u1eddi \u0111i\u1ec3m. C\u00e1c s\u00f3ng nh\u1ecf ng\u1eafn, t\u1ea7n s\u1ed1 cao gi\u00fap x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c c\u00e1c dao \u0111\u1ed9ng \u0111\u1ed9t ng\u1ed9t theo th\u1eddi gian; c\u00e1c s\u00f3ng nh\u1ecf d\u00e0i, t\u1ea7n s\u1ed1 th\u1ea5p gi\u00fap ph\u00e2n gi\u1ea3i c\u00e1c th\u00e0nh ph\u1ea7n dao \u0111\u1ed9ng ch\u1eadm theo t\u1ea7n s\u1ed1.<\/p>\n<h2>2. Ph\u00e2n t\u00edch Wavelet so v\u1edbi FFT<\/h2>\n<p>\u0110\u1ec3 hi\u1ec3u r\u00f5 gi\u00e1 tr\u1ecb c\u1ee7a ph\u00e2n t\u00edch s\u00f3ng, vi\u1ec7c nh\u1eadn ra nh\u1eefng h\u1ea1n ch\u1ebf c\u1ee7a FFT s\u1ebd r\u1ea5t h\u1eefu \u00edch:<\/p>\n<ul>\n<li><strong>FFT (Bi\u1ebfn \u0111\u1ed5i Fourier nhanh):<\/strong> FFT cho b\u1ea1n bi\u1ebft <em>G\u00ec<\/em> c\u00e1c t\u1ea7n s\u1ed1 n\u00e0y c\u00f3 m\u1eb7t nh\u01b0ng kh\u00f4ng cung c\u1ea5p th\u00f4ng tin v\u1ec1 <em>khi<\/em> khi ch\u00fang x\u1ea3y ra. N\u00f3 ph\u00e2n t\u00edch to\u00e0n b\u1ed9 d\u1eef li\u1ec7u c\u00f9ng m\u1ed9t l\u00fac, mang l\u1ea1i k\u1ebft qu\u1ea3 tuy\u1ec7t v\u1eddi <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/frequency\/\">T\u00ednh th\u01b0\u1eddng xuy\u00ean<\/a> \u0111\u1ed9 ph\u00e2n gi\u1ea3i kh\u00f4ng gian nh\u01b0ng \u0111\u1ed9 ph\u00e2n gi\u1ea3i th\u1eddi gian b\u1eb1ng kh\u00f4ng.<\/li>\n<li><strong>Ph\u00e2n t\u00edch wavelet:<\/strong> Ph\u00e2n t\u00edch s\u00f3ng nh\u1ecf cho bi\u1ebft c\u1ea3 t\u1ea7n s\u1ed1 n\u00e0o xu\u1ea5t hi\u1ec7n v\u00e0 v\u00e0o th\u1eddi \u0111i\u1ec3m n\u00e0o. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y t\u1ea1o ra b\u1ea3n \u0111\u1ed3 \u201cth\u1eddi gian-t\u1ea7n s\u1ed1\u201d c\u1ee7a t\u00edn hi\u1ec7u, cho th\u1ea5y s\u1ef1 bi\u1ebfn \u0111\u1ed5i c\u1ee7a th\u00e0nh ph\u1ea7n ph\u1ed5 trong su\u1ed1t qu\u00e1 tr\u00ecnh \u0111o.<\/li>\n<\/ul>\n<p>H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng m\u1ed9t t\u00edn hi\u1ec7u ch\u1ee9a ti\u1ebfng \u201cl\u00e1ch c\u00e1ch\u201d ng\u1eafn do r\u0103ng b\u00e1nh r\u0103ng b\u1ecb n\u1ee9t. Ph\u00e2n t\u00edch FFT c\u00f3 th\u1ec3 ch\u1ec9 cho th\u1ea5y s\u1ef1 gia t\u0103ng nh\u1eb9 v\u1ec1 n\u0103ng l\u01b0\u1ee3ng b\u0103ng r\u1ed9ng, b\u1edfi v\u00ec ti\u1ebfng l\u00e1ch c\u00e1ch n\u00e0y \u0111\u00e3 b\u1ecb trung b\u00ecnh h\u00f3a tr\u00ean to\u00e0n b\u1ed9 \u0111o\u1ea1n ghi. Ng\u01b0\u1ee3c l\u1ea1i, ph\u00e2n t\u00edch s\u00f3ng nh\u1ecf (wavelet) t\u1ea1o ra m\u1ed9t \u0111\u1ed3 th\u1ecb cho th\u1ea5y r\u00f5 r\u00e0ng m\u1ed9t \u0111\u1ee3t b\u00f9ng ph\u00e1t n\u0103ng l\u01b0\u1ee3ng t\u1ea7n s\u1ed1 cao ngay t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u00ednh x\u00e1c m\u00e0 ti\u1ebfng l\u00e1ch c\u00e1ch x\u1ea3y ra. \u0110\u00e2y ch\u00ednh l\u00e0 l\u1ee3i th\u1ebf th\u1ef1c ti\u1ec5n: n\u00f3 gi\u1eef nguy\u00ean th\u1eddi \u0111i\u1ec3m x\u1ea3y ra c\u00e1c s\u1ef1 ki\u1ec7n m\u00e0 FFT l\u00e0m m\u1edd \u0111i. V\u1ec1 b\u1ea3n ch\u1ea5t, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 m\u1ed1i li\u00ean h\u1ec7 ch\u1eb7t ch\u1ebd v\u1edbi <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/order-analysis\/\">ph\u00e2n t\u00edch \u0111\u01a1n h\u00e0ng<\/a>, \u0111\u1ed3ng th\u1eddi c\u0169ng gi\u1ea3i quy\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p t\u00edn hi\u1ec7u m\u00e0 m\u00f4 h\u00ecnh t\u1ea7n s\u1ed1 c\u1ed1 \u0111\u1ecbnh \u0111\u01a1n gi\u1ea3n kh\u00f4ng c\u00f2n \u00e1p d\u1ee5ng \u0111\u01b0\u1ee3c.<\/p>\n<h2>3. Scalogram: B\u1ea3n \u0111\u1ed3 th\u1eddi gian-t\u1ea7n s\u1ed1<\/h2>\n<p>\u0110\u1ea7u ra ph\u1ed5 bi\u1ebfn nh\u1ea5t c\u1ee7a ph\u00e2n t\u00edch wavelet l\u00e0 <strong>bi\u1ec3u \u0111\u1ed3 scalogram<\/strong> (ho\u1eb7c m\u1ed9t \u0111\u1ed3 th\u1ecb th\u1eddi gian-t\u1ea7n s\u1ed1 t\u01b0\u01a1ng t\u1ef1) \u2014 m\u1ed9t b\u1ea3n \u0111\u1ed3 m\u00e0u hai chi\u1ec1u trong \u0111\u00f3:<\/p>\n<ul>\n<li>Tr\u1ee5c X bi\u1ec3u th\u1ecb th\u1eddi gian.<\/li>\n<li>Tr\u1ee5c Y bi\u1ec3u th\u1ecb t\u1ea7n su\u1ea5t (ho\u1eb7c thang \u0111o).<\/li>\n<li>M\u00e0u s\u1eafc t\u01b0\u1ee3ng tr\u01b0ng cho <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/amplitude\/\">bi\u00ean \u0111\u1ed9<\/a> ho\u1eb7c n\u0103ng l\u01b0\u1ee3ng c\u1ee7a dao \u0111\u1ed9ng t\u1ea1i th\u1eddi \u0111i\u1ec3m v\u00e0 t\u1ea7n s\u1ed1 c\u1ee5 th\u1ec3 \u0111\u00f3.<\/li>\n<\/ul>\n<p>H\u00ecnh \u1ea3nh h\u00f3a n\u00e0y gi\u00fap d\u1ec5 d\u00e0ng ph\u00e1t hi\u1ec7n c\u00e1c s\u1ef1 ki\u1ec7n tho\u00e1ng qua, v\u1ed1n th\u01b0\u1eddng b\u1ecb che khu\u1ea5t trong ph\u1ed5 ti\u00eau chu\u1ea9n. V\u00ed d\u1ee5, m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng d\u1ecdc c\u00f3 m\u00e0u \u201cn\u00f3ng\u201d tr\u00ean \u0111\u1ed3 th\u1ecb quy m\u00f4 (scalogram) \u0111\u00e1nh d\u1ea5u m\u1ed9t s\u1ef1 ki\u1ec7n b\u0103ng r\u1ed9ng nh\u01b0 m\u1ed9t v\u1ee5 va ch\u1ea1m x\u1ea3y ra t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m ch\u00ednh x\u00e1c \u2014 d\u1ea5u v\u1ebft h\u00ecnh \u1ea3nh c\u1ee7a m\u1ed9t \u0111\u1ee9t g\u00e3y c\u1ee5c b\u1ed9 v\u00e0 l\u1eb7p \u0111i l\u1eb7p l\u1ea1i. V\u1ec1 m\u1eb7t l\u00fd thuy\u1ebft, \u0111\u1ed3 th\u1ecb quy m\u00f4 b\u1ed5 sung cho c\u00e1c h\u00ecnh th\u1ee9c hi\u1ec3n th\u1ecb ti\u00ean ti\u1ebfn kh\u00e1c nh\u01b0 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/waterfall-plot\/\">l\u00f4 \u0111\u1ea5t th\u00e1c n\u01b0\u1edbc<\/a>, cho th\u1ea5y s\u1ef1 thay \u0111\u1ed5i c\u1ee7a ph\u1ed5 qua nhi\u1ec1u gi\u00e1 tr\u1ecb trung b\u00ecnh ho\u1eb7c t\u1ed1c \u0111\u1ed9 li\u00ean ti\u1ebfp.<\/p>\n<h2>4. \u1ee8ng d\u1ee5ng trong ch\u1ea9n \u0111o\u00e1n rung \u0111\u1ed9ng<\/h2>\n<p>Ph\u00e2n t\u00edch wavelet th\u01b0\u1eddng kh\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho m\u1ee5c \u0111\u00edch th\u01b0\u1eddng l\u1ec7 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/vibration-monitoring\/\">gi\u00e1m s\u00e1t rung \u0111\u1ed9ng<\/a>nh\u01b0ng l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd \u0111\u1ec3 ch\u1ea9n \u0111o\u00e1n n\u00e2ng cao trong nh\u1eefng t\u00ecnh hu\u1ed1ng c\u1ee5 th\u1ec3:<\/p>\n<ul>\n<li><strong>Ph\u00e2n t\u00edch h\u1ed9p s\u1ed1:<\/strong> r\u1ea5t hi\u1ec7u qu\u1ea3 trong vi\u1ec7c ph\u00e1t hi\u1ec7n c\u00e1c l\u1ed7i c\u1ee5c b\u1ed9 nh\u01b0 m\u1ed9t chi\u1ebfc r\u0103ng b\u1ecb n\u1ee9t ho\u1eb7c g\u00e3y, t\u1ea1o ra m\u1ed9t l\u1ef1c va ch\u1ea1m r\u00f5 r\u1ec7t m\u1ed7i v\u00f2ng quay.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/bearing-defects\/\">L\u1ed7i \u1ed5 tr\u1ee5c<\/a> Ph\u00e2n t\u00edch:<\/strong> c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c t\u00e1c \u0111\u1ed9ng ri\u00eang l\u1ebb do m\u1ed9t chi ti\u1ebft l\u0103n \u0111i qua m\u1ed9t <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/spalling\/\">v\u1ebft n\u1ee9t<\/a>, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c lo\u1ea1i m\u00e1y m\u00f3c v\u1eadn h\u00e0nh \u1edf t\u1ed1c \u0111\u1ed9 r\u1ea5t ch\u1eadm, n\u01a1i m\u00e0 c\u00e1c lo\u1ea1i <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/envelope-analysis\/\">ph\u00e2n t\u00edch \u0111\u01b0\u1eddng bao<\/a> c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t th\u00e1ch th\u1ee9c.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/transient-vibration\/\">S\u1ef1 ki\u1ec7n t\u1ea1m th\u1eddi<\/a> Ph\u00e2n t\u00edch:<\/strong> r\u1ea5t ph\u00f9 h\u1ee3p cho c\u00e1c t\u00edn hi\u1ec7u t\u1eeb qu\u00e1 tr\u00ecnh kh\u1edfi \u0111\u1ed9ng, t\u1eaft m\u00e1y ho\u1eb7c b\u1ea5t k\u1ef3 quy tr\u00ecnh n\u00e0o m\u00e0 c\u00e1c \u0111\u1eb7c t\u00ednh v\u1ec1 t\u1ed1c \u0111\u1ed9 v\u00e0 \u0111\u1ed9 rung thay \u0111\u1ed5i li\u00ean t\u1ee5c.<\/li>\n<li><strong>Ph\u00e2n t\u00edch c\u1ea5u tr\u00fac:<\/strong> h\u1eefu \u00edch trong vi\u1ec7c ph\u00e2n t\u00edch ph\u1ea3n \u1ee9ng c\u1ee7a k\u1ebft c\u1ea5u tr\u01b0\u1edbc m\u1ed9t t\u00e1c \u0111\u1ed9ng \u2014 m\u1ed9t <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/bump-test\/\">ki\u1ec3m tra va ch\u1ea1m<\/a> \u2014 \u0111\u1ec3 hi\u1ec3u r\u00f5 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/damping\/\">gi\u1ea3m ch\u1ea5n<\/a> and <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/natural-frequency\/\">t\u1ea7n s\u1ed1 t\u1ef1 nhi\u00ean<\/a>.<\/li>\n<\/ul>\n<h2>5. \u1ee8ng d\u1ee5ng th\u1ef1c ti\u1ec5n v\u00e0 nh\u1eefng h\u1ea1n ch\u1ebf<\/h2>\n<p>Ph\u00e2n t\u00edch s\u00f3ng nh\u1ecf (wavelet) \u0111\u00f2i h\u1ecfi nhi\u1ec1u t\u00e0i nguy\u00ean t\u00ednh to\u00e1n h\u01a1n so v\u1edbi FFT, v\u00e0 vi\u1ec7c gi\u1ea3i th\u00edch \u0111\u1ed3 th\u1ecb quy m\u00f4 (scalogram) c\u1ea7n nhi\u1ec1u kinh nghi\u1ec7m h\u01a1n so v\u1edbi vi\u1ec7c \u0111\u1ecdc ph\u1ed5 \u0111\u01b0\u1eddng (line spectrum). V\u00ec nh\u1eefng l\u00fd do n\u00e0y, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng song song, ch\u1ee9 kh\u00f4ng ph\u1ea3i thay th\u1ebf, c\u00e1c k\u1ef9 thu\u1eadt th\u00f4ng th\u01b0\u1eddng. Vi\u1ec7c ph\u00e1t hi\u1ec7n s\u1ef1 c\u1ed1 h\u00e0ng ng\u00e0y v\u1eabn ch\u1ee7 y\u1ebfu d\u1ef1a v\u00e0o ph\u1ed5 FFT, m\u1ee9c \u0111\u1ed9 t\u1ed5ng th\u1ec3 v\u00e0 ph\u00e2n t\u00edch \u0111\u01b0\u1eddng bao; s\u00f3ng nh\u1ecf \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng khi c\u00e1c c\u00f4ng c\u1ee5 \u0111\u00f3 ph\u00e1t hi\u1ec7n \u0111i\u1ec1u b\u1ea5t th\u01b0\u1eddng nh\u01b0ng kh\u00f4ng th\u1ec3 x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c v\u1ecb tr\u00ed theo th\u1eddi gian. Trong th\u1ef1c t\u1ebf, d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c thu th\u1eadp b\u1eb1ng m\u1ed9t thi\u1ebft b\u1ecb c\u1ea7m tay \u2014 m\u1ed9t m\u00e1y ph\u00e2n t\u00edch hai k\u00eanh nh\u01b0 <a href=\"https:\/\/vibromera.eu\/vi\/san-pham\/balanset-1\/\">Balanset-1A<\/a> ph\u01b0\u01a1ng ph\u00e1p n\u00e0y thu th\u1eadp c\u00e1c d\u1ea1ng s\u00f3ng th\u1eddi gian ch\u1ea5t l\u01b0\u1ee3ng cao, \u0111\u01b0\u1ee3c ghi l\u1ea1i t\u1ea1i c\u00e1c \u1ed5 tr\u1ee5c c\u1ee7a ch\u00ednh m\u00e1y \u1edf t\u1ed1c \u0111\u1ed9 v\u1eadn h\u00e0nh, v\u00e0 \u0111\u00e2y l\u00e0 c\u01a1 s\u1edf cho m\u1ecdi nghi\u00ean c\u1ee9u th\u1eddi gian-t\u1ea7n s\u1ed1 sau n\u00e0y. Tuy nhi\u00ean, ph\u1ea7n m\u1ec1m m\u00e1y t\u00ednh hi\u1ec7n \u0111\u1ea1i \u0111\u00e3 bi\u1ebfn ph\u00e2n t\u00edch s\u00f3ng nh\u1ecf (wavelet) th\u00e0nh m\u1ed9t c\u00f4ng c\u1ee5 d\u1ec5 ti\u1ebfp c\u1eadn v\u00e0 h\u1eefu \u00edch cho c\u00e1c nh\u00e0 ph\u00e2n t\u00edch chuy\u00ean s\u00e2u khi x\u1eed l\u00fd c\u00e1c t\u00edn hi\u1ec7u ph\u1ee9c t\u1ea1p, kh\u00f4ng \u1ed5n \u0111\u1ecbnh.<\/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>Gi\u1edbi thi\u1ec7u v\u1ec1 Ph\u00e2n t\u00edch Wavelet, m\u1ed9t k\u1ef9 thu\u1eadt x\u1eed l\u00fd t\u00edn hi\u1ec7u ti\u00ean ti\u1ebfn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e2n t\u00edch c\u00e1c t\u00edn hi\u1ec7u rung \u0111\u1ed9ng t\u1ea1m th\u1eddi v\u00e0 kh\u00f4ng d\u1eebng trong m\u00e1y m\u00f3c.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-308","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/308","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\/308\/revisions"}],"predecessor-version":[{"id":101220,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/308\/revisions\/101220"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/media?parent=308"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/categories?post=308"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/tags?post=308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}