{"id":313,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/zoom-fft\/"},"modified":"2026-07-03T09:57:43","modified_gmt":"2026-07-03T09:57:43","slug":"zoom-fft","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/vi\/glossary\/zoom-fft\/","title":{"rendered":"Zoom FFT l\u00e0 g\u00ec? Ph\u00e2n t\u00edch quang ph\u1ed5 \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao"},"content":{"rendered":"<h1>Hi\u1ec3u v\u1ec1 Zoom FFT<\/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\/313?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\/313?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\/313?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\/313?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\/313?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\/313?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\/313?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\/313?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\/313?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\/313?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\/313?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\/313?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\/313?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\/313?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\u00f3ng to FFT<\/strong> \u2014 c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 FFT \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao ho\u1eb7c thu ph\u00f3ng t\u1ea7n s\u1ed1 \u2014 l\u00e0 \u1ee9ng d\u1ee5ng n\u00e2ng cao c\u1ee7a <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/fft\/\">Bi\u1ebfn \u0111\u1ed5i Fourier nhanh<\/a> t\u1eadp trung \u0111\u1ed9 ph\u00e2n gi\u1ea3i t\u1ea7n s\u1ed1 r\u1ea5t t\u1ed1t b\u00ean trong d\u1ea3i t\u1ea7n s\u1ed1 h\u1eb9p \u0111\u01b0\u1ee3c ch\u1ecdn thay v\u00ec lan t\u1ecfa n\u00f3 m\u1ecfng tr\u00ean to\u00e0n b\u1ed9 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/spectrum\/\">ph\u1ed5<\/a>. Thay v\u00ec ph\u00e2n t\u00edch 0\u20131000 Hz v\u1edbi \u0111\u1ed9 ph\u00e2n gi\u1ea3i 1 Hz (1000 d\u00f2ng), FFT zoom c\u00f3 th\u1ec3 ph\u00e2n t\u00edch 95\u2013105 Hz v\u1edbi \u0111\u1ed9 ph\u00e2n gi\u1ea3i 0,01 Hz \u2014 c\u00f9ng 1000 d\u00f2ng, nh\u01b0ng t\u1ea5t c\u1ea3 ch\u00fang \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i th\u00e0nh m\u1ed9t c\u1eeda s\u1ed5 10 Hz. S\u1ef1 l\u00e0m s\u1eafc n\u00e9t g\u1ea5p m\u1ed9t tr\u0103m l\u1ea7n n\u00e0y cho ph\u00e9p nh\u00e0 ph\u00e2n t\u00edch t\u00e1ch ri\u00eang c\u00e1c th\u00e0nh ph\u1ea7n g\u1ea7n nhau nh\u01b0 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/sidebands\/\">d\u1ea3i b\u00ean<\/a>, x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c t\u1ea7n s\u1ed1 \u0111\u1ec9nh v\u00e0 nghi\u00ean c\u1ee9u chi ti\u1ebft t\u1eebng v\u00f9ng ph\u1ed5.<\/p>\n<h2>1. \u0110\u1ecbnh ngh\u0129a: \u0110\u1ed9 ph\u00e2n gi\u1ea3i N\u01a1i C\u1ea7n Thi\u1ebft<\/h2>\n<p>Zoom FFT l\u00e0 c\u00f4ng c\u1ee5 l\u00fd t\u01b0\u1edfng khi th\u00f4ng tin ch\u1ea9n \u0111o\u00e1n n\u1eb1m trong c\u00e1c \u0111\u1ec9nh qu\u00e1 s\u00e1t nhau \u0111\u1ec3 m\u1ed9t ph\u1ed5 b\u00ecnh th\u01b0\u1eddng c\u00f3 th\u1ec3 t\u00e1ch bi\u1ec7t. C\u00e1c tr\u01b0\u1eddng h\u1ee3p ch\u00ednh l\u00e0 \u0111\u1ed9ng c\u01a1 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/broken-rotor-bars\/\">thanh r\u00f4to b\u1ecb h\u1ecfng<\/a> (ph\u00e2n gi\u1ea3i c\u00e1c d\u1ea3i bi\u00ean pole-pass r\u1ea5t nh\u1ecf \u2014 c\u00e1ch nhau b\u1eb1ng s\u1ed1 c\u1ef1c \u00d7 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/slip-frequency\/\">t\u1ea7n s\u1ed1 tr\u01b0\u1ee3t<\/a> \u2014 quanh t\u1ed1c \u0111\u1ed9 ch\u1ea1y 1\u00d7), <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/gear-defects\/\">s\u1ef1 c\u1ed1 h\u1ed9p s\u1ed1<\/a> (\u0111\u1ecdc m\u1eabu \u0111i\u1ec1u ch\u1ebf xung quanh t\u1ea7n s\u1ed1 mesh), v\u00e0 b\u1ea5t k\u1ef3 t\u00ecnh hu\u1ed1ng n\u00e0o m\u00e0 hai \u0111\u1ec9nh quan tr\u1ecdng kh\u00e1c s\u1ebd h\u1ee3p nh\u1ea5t th\u00e0nh m\u1ed9t kh\u1ed1i m\u1edd.<\/p>\n<h2>2. T\u1ea1i Sao C\u1ea7n Zoom FFT<\/h2>\n<h3>Gi\u1edbi h\u1ea1n ph\u00e2n gi\u1ea3i c\u1ee7a m\u1ed9t FFT chu\u1ea9n<\/h3>\n<p>M\u1ecdi FFT th\u00f4ng th\u01b0\u1eddng tu\u00e2n theo m\u1ed9t m\u1ed1i quan h\u1ec7 t\u1ea5t y\u1ebfu:<\/p>\n<blockquote><p>\u0110\u1ed9 ph\u00e2n gi\u1ea3i = F<sub>max<\/sub> \u00f7 S\u1ed1 d\u00f2ng.<\/p><\/blockquote>\n<p>V\u00ed d\u1ee5, d\u1ea3i 0\u20131000 Hz v\u1edbi 800 v\u1ea1ch cho \u0111\u1ed9 ph\u00e2n gi\u1ea3i 1.25 Hz \u2014 v\u00e0 hai \u0111\u1ec9nh g\u1ea7n nhau h\u01a1n 1.25 Hz \u0111\u01a1n gi\u1ea3n l\u00e0 kh\u00f4ng th\u1ec3 ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c. \u0110\u00e2y l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 th\u1ef1c s\u1ef1 \u0111\u1ed1i v\u1edbi l\u1ed7i \u0111i\u1ec7n, khi c\u00e1c d\u1ea3i bi\u00ean pole-pass \u0111\u01b0\u1ee3c quan t\u00e2m th\u01b0\u1eddng ch\u1ec9 c\u00e1ch \u0111\u1ec9nh trung t\u00e2m v\u00e0i hertz \u2014 \u0111\u00f4i khi ch\u1ec9 1\u20132 Hz \u2014.<\/p>\n<h3>Nh\u1eefng s\u1ef1 \u0111\u00e1nh \u0111\u1ed5i c\u1ee7a v\u0169 l\u1ef1c brute<\/h3>\n<ul>\n<li><strong>Gi\u1ea3m F<sub>max<\/sub>:<\/strong> gi\u1ea3m xu\u1ed1ng 0\u2013100 Hz c\u1ea3i thi\u1ec7n \u0111\u1ed9 ph\u00e2n gi\u1ea3i th\u00e0nh 0,125 Hz, nh\u01b0ng lo\u1ea1i b\u1ecf t\u1ea5t c\u1ea3 n\u1ed9i dung t\u1ea7n s\u1ed1 cao h\u01a1n.<\/li>\n<li><strong>T\u0103ng s\u1ed1 l\u01b0\u1ee3ng d\u00f2ng:<\/strong> 8000 d\u00f2ng c\u0169ng \u0111\u1ea1t 0,125 Hz, nh\u01b0ng n\u1eb7ng v\u1ec1 th\u1eddi gian x\u1eed l\u00fd v\u00e0 b\u1ed9 nh\u1edb.<\/li>\n<li><strong>Ph\u00f3ng to FFT:<\/strong> cung c\u1ea5p \u0111\u1ed9 ph\u00e2n gi\u1ea3i t\u1ed1t ch\u00ednh x\u00e1c n\u01a1i c\u1ea7n thi\u1ebft trong khi gi\u1eef cho ph\u00e9p t\u00ednh l\u00e0 h\u1ee3p l\u00fd \u2014 \u0111i\u1ec1u t\u1ed1t nh\u1ea5t c\u1ee7a c\u1ea3 hai.<\/li>\n<\/ul>\n<p>B\u1ea1n c\u00f3 th\u1ec3 xem tr\u01b0\u1edbc nh\u1eefng s\u1ef1 \u0111\u00e1nh \u0111\u1ed5i n\u00e0y tr\u01b0\u1edbc khi \u0111o l\u01b0\u1eddng b\u1eb1ng <a href=\"https:\/\/vibromera.eu\/vi\/calculators\/fft-resolution-calculator\/\">M\u00e1y t\u00ednh \u0111\u1ed9 ph\u00e2n gi\u1ea3i FFT<\/a>, n\u00f3 li\u00ean k\u1ebft span, s\u1ed1 l\u01b0\u1ee3ng d\u00f2ng v\u00e0 \u0111\u1ed9 ph\u00e2n gi\u1ea3i tr\u1ef1c ti\u1ebfp.<\/p>\n<h2>3. C\u00e1ch Zoom FFT Ho\u1ea1t \u0110\u1ed9ng<\/h2>\n<p>K\u1ef9 thu\u1eadt n\u00e0y l\u00e0 m\u1ed9t &#8220;k\u00ednh l\u00fap&#8221; k\u1ef9 thu\u1eadt s\u1ed1 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng t\u1eeb ba b\u01b0\u1edbc x\u1eed l\u00fd t\u00edn hi\u1ec7u:<\/p>\n<ol>\n<li><strong>Ch\u1ecdn d\u1ea3i t\u1ea7n:<\/strong> ch\u1ecdn m\u1ed9t t\u1ea7n s\u1ed1 trung t\u00e2m v\u00e0 b\u0103ng th\u00f4ng, v\u00ed d\u1ee5: 100 Hz \u00b1 10 Hz.<\/li>\n<li><strong>S\u1ef1 d\u1ecbch chuy\u1ec3n t\u1ea7n s\u1ed1:<\/strong> d\u1ecbch k\u1ef9 thu\u1eadt s\u1ed1 d\u1ea3i \u0111\u00f3 xu\u1ed1ng ph\u00eda DC (baseband), \u0111\u1ec3 v\u00f9ng quan t\u00e2m \u0111\u1eb7t \u1edf n\u01a1i \u0111\u1ed9 ph\u00e2n gi\u1ea3i t\u1ef1 nhi\u00ean c\u1ee7a FFT l\u00e0 d\u00e0y \u0111\u1eb7c nh\u1ea5t.<\/li>\n<li><strong>S\u1ef1 suy t\u00e0n:<\/strong> gi\u1ea3m t\u1ed1c \u0111\u1ed9 l\u1ea5y m\u1eabu t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi d\u1ea3i t\u1ea7n s\u1ed1 h\u1eb9p h\u01a1n.<\/li>\n<li><strong>T\u00ednh to\u00e1n FFT:<\/strong> ch\u1ea1y ph\u00e9p bi\u1ebfn \u0111\u1ed5i tr\u00ean t\u00edn hi\u1ec7u t\u1ed1c \u0111\u1ed9 gi\u1ea3m.<\/li>\n<li><strong>K\u1ebft qu\u1ea3:<\/strong> ph\u1ed5 \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao bao ph\u1ee7 ch\u1ec9 d\u1ea3i h\u1eb9p \u0111\u01b0\u1ee3c ch\u1ecdn.<\/li>\n<\/ol>\n<p>L\u1ee3i \u00edch t\u1ef7 l\u1ec7 tr\u1ef1c ti\u1ebfp v\u1edbi m\u1ee9c \u0111\u1ed9 ph\u00f3ng to: ph\u00f3ng to \u0111\u1ebfn m\u1ed9t ph\u1ea7n m\u01b0\u1eddi c\u1ee7a to\u00e0n b\u1ed9 d\u1ea3i cho ph\u00e9p \u0111\u1ed9 ph\u00e2n gi\u1ea3i m\u1ecbn h\u01a1n g\u1ea5p m\u01b0\u1eddi l\u1ea7n, do \u0111\u00f3 \u0111\u1ed9 l\u1ee3i ph\u00e2n gi\u1ea3i \u0111\u01a1n gi\u1ea3n l\u00e0 (D\u1ea3i to\u00e0n b\u1ed9 \u00f7 D\u1ea3i ph\u00f3ng to). Chuy\u1ec3n t\u1eeb 0\u20131000 Hz \u1edf 1 Hz sang c\u1eeda s\u1ed5 95\u2013105 Hz \u1edf 0,01 Hz l\u00e0 l\u1ee3i \u00edch g\u1ea5p tr\u0103m l\u1ea7n.<\/p>\n<h2>4. \u1ee8ng d\u1ee5ng<\/h2>\n<h3>Ph\u00e1t hi\u1ec7n khi\u1ebfm khuy\u1ebft thanh b\u00e0n ch\u1ea1y \u0111\u1ed9ng c\u01a1<\/h3>\n<p>\u0110\u00e2y l\u00e0 b\u00e0i to\u00e1n zoom FFT kinh \u0111i\u1ec3n. C\u00e1c d\u1ea3i bi\u00ean t\u1ea7n s\u1ed1 c\u1ef1c (pole-pass sidebands) (s\u1ed1 c\u1ef1c \u00d7 t\u1ea7n s\u1ed1 tr\u01b0\u1ee3t) ch\u1ec9 c\u00e1ch \u0111\u1ec9nh 1\u00d7 v\u00e0i hertz, qu\u00e1 g\u1ea7n \u0111\u1ec3 ph\u00e2n gi\u1ea3i trong ph\u1ed5 t\u1ea7n chu\u1ea9n, v\u00ec v\u1eady c\u1ea7n zoom quanh 1\u00d7 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/running-speed\/\">t\u1ed1c \u0111\u1ed9 v\u1eadn h\u00e0nh<\/a> \u1edf 0,1 Hz ho\u1eb7c t\u1ed1t h\u01a1n s\u1ebd t\u00e1ch ch\u00fang ra r\u00f5 r\u00e0ng v\u00e0 l\u1ed9 ra <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/broken-rotor-bars\/\">thanh r\u00f4to b\u1ecb h\u1ecfng<\/a>. Bi\u00ean \u0111\u1ed9 d\u1ea3i b\u00ean t\u01b0\u01a1ng \u0111\u1ed1i v\u1edbi \u0111\u1ec9nh 1\u00d7 cho bi\u1ebft c\u00f3 bao nhi\u00eau thanh b\u1ecb g\u00e3y.<\/p>\n<h3>Ch\u1ea9n \u0111o\u00e1n b\u00e1nh r\u0103ng<\/h3>\n<p>Ph\u00f3ng to xung quanh <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/gear-mesh-frequency\/\">t\u1ea7n s\u1ed1 \u0103n kh\u1edbp b\u00e1nh r\u0103ng<\/a> \u0111\u1ec3 ph\u00e2n gi\u1ea3i c\u00e1c d\u1ea3i b\u00ean c\u00e1ch nhau theo t\u1ed1c \u0111\u1ed9 tr\u1ee5c, x\u00e1c \u0111\u1ecbnh <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/hunting-tooth-frequency\/\">t\u1ea7n s\u1ed1 hunting-tooth<\/a> m\u1eabu, v\u00e0 ph\u00e2n bi\u1ec7t d\u1ea3i b\u00ean b\u1ed9 \u0111i\u1ec1u ch\u1ec9nh kh\u00f3a t\u1eeb d\u1ea3i b\u00ean b\u00e1nh r\u0103ng. Mi\u1ec5n ph\u00ed <a href=\"https:\/\/vibromera.eu\/vi\/calculators\/gear-mesh-frequency\/\">M\u00e1y t\u00ednh T\u1ea7n s\u1ed1 \u0102n kh\u1edbp B\u00e1nh r\u0103ng<\/a> cho b\u1ea1n bi\u1ebft n\u01a1i c\u1ea7n c\u0103n gi\u1eefa ph\u00f3ng to ngay t\u1eeb \u0111\u1ea7u.<\/p>\n<h3>Ph\u00e2n t\u00edch \u1ed5 tr\u1ee5c<\/h3>\n<p>Ph\u00f3ng to xung quanh <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/bearing-fault-frequencies\/\">t\u1ea7n s\u1ed1 l\u1ed7i \u1ed5 tr\u1ee5c<\/a> \u0111\u1ec3 ph\u00e2n gi\u1ea3i c\u1ea5u tr\u00fac d\u1ea3i b\u00ean c\u1ee7a ch\u00fang, x\u00e1c nh\u1eadn t\u1ea7n s\u1ed1 s\u1ef1 c\u1ed1 ch\u00ednh x\u00e1c so v\u1edbi gi\u00e1 tr\u1ecb \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n, v\u00e0 \u0111\u1ecdc m\u1eabu \u0111i\u1ec1u bi\u1ebfn m\u00e0 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/envelope-analysis\/\">ph\u00e2n t\u00edch \u0111\u01b0\u1eddng bao<\/a> s\u1ebd mang theo n\u1ebfu kh\u00f4ng.<\/p>\n<h3>Ph\u00e2n t\u00edch t\u1ea7n s\u1ed1 \u0110i\u1ec7n<\/h3>\n<p>Ph\u00f3ng to quanh t\u1ea7n s\u1ed1 l\u01b0\u1edbi ho\u1eb7c 2\u00d7 t\u1ea7n s\u1ed1 l\u01b0\u1edbi \u0111\u1ec3 ph\u00e2n gi\u1ea3i c\u00e1c d\u1ea3i bi\u00ean c\u00e1ch nhau theo <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/pole-pass-frequency\/\">t\u1ea7n s\u1ed1 \u0111i qua c\u1ef1c<\/a> trong rung li\u00ean quan \u0111\u1ebfn d\u00f2ng \u0111i\u1ec7n v\u00e0 \u0111o ch\u00ednh x\u00e1c kho\u1ea3ng c\u00e1ch \u0111\u00f3.<\/p>\n<h3>Nghi\u00ean c\u1ee9u t\u1ed1c \u0111\u1ed9 t\u1edbi h\u1ea1n<\/h3>\n<p>Ph\u00f3ng to xung quanh m\u1ed9t <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/natural-frequency\/\">t\u1ea7n s\u1ed1 t\u1ef1 nhi\u00ean<\/a> \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/resonance\/\">s\u1ef1 c\u1ed9ng h\u01b0\u1edfng<\/a> ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ec3 \u0111o chi\u1ec1u r\u1ed9ng c\u1ee7a \u0111\u1ec9nh c\u1ed9ng h\u01b0\u1edfng, t\u1eeb \u0111\u00f3 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/damping\/\">gi\u1ea3m ch\u1ea5n<\/a> c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u01b0\u1edbc t\u00ednh.<\/p>\n<h2>5. Quy tr\u00ecnh v\u1eadn h\u00e0nh<\/h2>\n<h3>C\u00e0i \u0111\u1eb7t<\/h3>\n<ol>\n<li><strong>Ch\u1ea1y m\u1ed9t FFT ti\u00eau chu\u1ea9n tr\u01b0\u1edbc ti\u00ean<\/strong> \u0111\u1ec3 t\u00ecm v\u00f9ng quan t\u00e2m \u2014 ph\u00f3ng to kh\u00f4ng bao gi\u1edd l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean m\u00f9 qu\u00e1ng.<\/li>\n<li><strong>Ch\u1ecdn t\u00e2m<\/strong> t\u1ea7n s\u1ed1 cho zoom.<\/li>\n<li><strong>Ch\u1ecdn kho\u1ea3ng<\/strong> \u2014 kho\u1ea3ng h\u1eb9p c\u00f3 ngh\u0129a l\u00e0 \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao h\u01a1n.<\/li>\n<li><strong>\u0110\u1eb7t s\u1ed1 d\u00f2ng<\/strong> (th\u01b0\u1eddng gi\u1ed1ng v\u1edbi FFT ti\u00eau chu\u1ea9n).<\/li>\n<li><strong>Thu th\u1eadp<\/strong> v\u00e0 \u0111\u1ec3 thi\u1ebft b\u1ecb t\u00ednh to\u00e1n ph\u00f3ng to.<\/li>\n<\/ol>\n<h3>C\u00e0i \u0111\u1eb7t \u0111i\u1ec3n h\u00ecnh<\/h3>\n<ul>\n<li><strong>D\u1ea3i ph\u1ee5 \u0111\u1ed9ng c\u01a1:<\/strong> t\u00e2m t\u1ea1i 1\u00d7 (30 Hz), d\u1ea3i \u00b110 Hz, 800 d\u00f2ng \u2192 \u0111\u1ed9 ph\u00e2n gi\u1ea3i 0,025 Hz.<\/li>\n<li><strong>S\u1ef1 \u0103n kh\u1edbp c\u1ee7a b\u00e1nh r\u0103ng:<\/strong> t\u00e2m \u1edf GMF (600 Hz), d\u1ea3i \u00b150 Hz, 1600 d\u00f2ng \u2192 \u0111\u1ed9 ph\u00e2n gi\u1ea3i 0,0625 Hz.<\/li>\n<li><strong>L\u1ed7i \u1ed5 tr\u1ee5c:<\/strong> t\u00e2m t\u1ea1i <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/bpfo\/\">BPFO<\/a> (150 Hz), d\u1ea3i \u00b125 Hz, 800 d\u00f2ng \u2192 \u0111\u1ed9 ph\u00e2n gi\u1ea3i 0,0625 Hz.<\/li>\n<\/ul>\n<h2>6. \u01afu \u0111i\u1ec3m<\/h2>\n<ul>\n<li><strong>\u0110\u1ed9 ph\u00e2n gi\u1ea3i cao:<\/strong> M\u1ecbn h\u01a1n 10\u2013100\u00d7 so v\u1edbi FFT ti\u00eau chu\u1ea9n, t\u00e1ch bi\u1ec7t c\u00e1c \u0111\u1ec9nh m\u00e0 n\u1ebfu kh\u00f4ng s\u1ebd kh\u00f4ng th\u1ec3 ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c v\u00e0 ti\u1ebft l\u1ed9 chi ti\u1ebft ch\u1ea9n \u0111o\u00e1n.<\/li>\n<li><strong>Hi\u1ec7u qu\u1ea3 t\u00ednh to\u00e1n:<\/strong> r\u1ebb h\u01a1n nhi\u1ec1u so v\u1edbi vi\u1ec7c t\u0103ng s\u1ed1 d\u00f2ng tr\u00ean to\u00e0n b\u1ed9 ph\u1ed5 \u2014 nhanh h\u01a1n, v\u1edbi d\u1ea5u ch\u00e2n b\u1ed9 nh\u1edb nh\u1ecf h\u01a1n.<\/li>\n<li><strong>\u0110o t\u1ea7n s\u1ed1 ch\u00ednh x\u00e1c:<\/strong> x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c t\u1ea7n s\u1ed1 \u0111\u1ec9nh \u0111\u1ec3 c\u00f3 th\u1ec3 so s\u00e1nh v\u1edbi m\u1ed9t ph\u00e9p t\u00ednh l\u00fd thuy\u1ebft, x\u00e1c nh\u1eadn ho\u1eb7c b\u00e1c b\u1ecf m\u1ed9t <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/diagnosis\/\">ch\u1ea9n \u0111o\u00e1n<\/a>.<\/li>\n<\/ul>\n<h2>7. H\u1ea1n ch\u1ebf<\/h2>\n<ul>\n<li><strong>Ch\u1ec9 d\u1ea3i h\u1eb9p:<\/strong> n\u00f3 ch\u1ec9 hi\u1ec3n th\u1ecb v\u00f9ng \u0111\u01b0\u1ee3c ch\u1ecdn v\u00e0 m\u00f9 qu\u00e1ng v\u1edbi m\u1ecdi th\u1ee9 b\u00ean ngo\u00e0i n\u00f3, v\u00ec v\u1eady b\u1ea1n ph\u1ea3i bi\u1ebft kho\u1ea3ng n\u01a1i c\u1ea7n t\u00ecm \u2014 do \u0111\u00f3 c\u1ea7n t\u1ed5ng quan FFT ti\u00eau chu\u1ea9n tr\u01b0\u1edbc ti\u00ean.<\/li>\n<li><strong>Ki\u1ebfn th\u1ee9c ng\u01b0\u1eddi d\u00f9ng c\u1ea7n thi\u1ebft:<\/strong> ch\u1ecdn m\u1ed9t trung t\u00e2m v\u00e0 kho\u1ea3ng h\u1ee3p l\u00fd \u0111\u00f2i h\u1ecfi ph\u1ea3i hi\u1ec3u r\u00f5 nh\u1eefng g\u00ec b\u1ea1n \u0111ang t\u00ecm ki\u1ebfm, \u0111i\u1ec1u n\u00e0y l\u00e0m cho zoom FFT kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi s\u00e0ng l\u1ecdc chung v\u00e0 \u0111\u00f2i h\u1ecfi nhi\u1ec1u h\u01a1n so v\u1edbi FFT \u0111\u01a1n gi\u1ea3n.<\/li>\n<li><strong>Th\u1eddi gian \u0111\u1ea7u t\u01b0:<\/strong> n\u00f3 l\u00e0 m\u1ed9t ph\u00e9p \u0111o b\u1ed5 sung tr\u00ean c\u01a1 s\u1edf c\u1ee7a ph\u00e9p \u0111o ti\u00eau chu\u1ea9n, v\u1edbi c\u00e1c n\u1ed7 l\u1ef1c c\u00e0i \u0111\u1eb7t v\u00e0 l\u1ef1a ch\u1ecdn tham s\u1ed1 \u0111\u01b0\u1ee3c bi\u1ec7n minh cho c\u00e1c m\u00e1y m\u00f3c quan tr\u1ecdng ho\u1eb7c c\u00e1c v\u1ea5n \u0111\u1ec1 \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn tr\u01b0\u1edbc \u0111\u00f3 ch\u1ee9 kh\u00f4ng ph\u1ea3i c\u00e1c cu\u1ed9c kh\u1ea3o s\u00e1t th\u01b0\u1eddng l\u1ec7.<\/li>\n<\/ul>\n<h2>8. Zoom FFT t\u1ea1i Hi\u1ec7n tr\u01b0\u1eddng<\/h2>\n<p>M\u1eb7c d\u00f9 c\u00f4ng vi\u1ec7c zoom s\u00e2u nh\u1ea5t th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00e0nh cho c\u00e1c m\u00e1y m\u00f3c quan tr\u1ecdng \u0111\u01b0\u1ee3c trang b\u1ecb v\u0129nh vi\u1ec5n, c\u00f9ng m\u1ed9t nguy\u00ean t\u1eafc n\u00e0y c\u00f3 gi\u00e1 tr\u1ecb v\u00f4 c\u00f9ng l\u1edbn trong ch\u1ea9n \u0111o\u00e1n di \u0111\u1ed9ng. Sau m\u1ed9t <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/field-balancing\/\">c\u00e2n b\u1eb1ng t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng<\/a> cu\u1ed9c kh\u1ea3o s\u00e1t th\u01b0\u1eddng l\u1ec7, m\u1ed9t c\u00f4ng c\u1ee5 ph\u00e2n t\u00edch hai k\u00eanh ch\u1eb3ng h\u1ea1n nh\u01b0 <a href=\"https:\/\/vibromera.eu\/vi\/san-pham\/balanset-1\/\">Balanset-1A<\/a> cho ph\u00e9p m\u1ed9t k\u1ef9 s\u01b0 m\u1edf r\u1ed9ng v\u00f9ng ph\u1ed5 \u0111\u00e1ng ng\u1edd \u2014 xung quanh t\u1ed1c \u0111\u1ed9 ch\u1ea1y 1\u00d7, ch\u1eb3ng h\u1ea1n \u2014 \u0111\u1ec3 x\u00e1c nh\u1eadn xem m\u1ed9t \u0111\u1ec9nh n\u00e2ng cao c\u00f3 ho\u00e0n to\u00e0n l\u00e0 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/imbalance\/\">m\u1ea5t c\u00e2n b\u1eb1ng<\/a> hay l\u00e0 m\u1ed9t c\u1ee5m c\u00e1c d\u1ea3i b\u00ean \u0111i\u1ec7n \u1ea9n b\u00ean d\u01b0\u1edbi n\u00f3. S\u1ef1 ph\u00e2n bi\u1ec7t \u0111\u00f3 quy\u1ebft \u0111\u1ecbnh li\u1ec7u ph\u01b0\u01a1ng ph\u00e1p ch\u1eefa tr\u1ecb l\u00e0 hi\u1ec7u ch\u1ec9nh c\u00e2n b\u1eb1ng hay s\u1eeda ch\u1eefa \u0111\u1ed9ng c\u01a1, \u0111\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao kh\u1ea3 n\u0103ng ph\u00e2n gi\u1ea3i c\u00e1c \u0111\u1ec9nh s\u00e1t nhau t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng r\u1ea5t h\u1eefu \u00edch.<\/p>\n<p>T\u00f3m l\u1ea1i, zoom FFT l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 ph\u1ed5 m\u1ea1nh m\u1ebd cung c\u1ea5p \u0111\u1ed9 ph\u00e2n gi\u1ea3i c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u00e1ch bi\u1ec7t c\u00e1c th\u00e0nh ph\u1ea7n \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i ch\u1eb7t ch\u1ebd ph\u00eda sau c\u00e1c l\u1ed7i \u0111i\u1ec7n \u0111\u1ed9ng c\u01a1, khi\u1ebfm khuy\u1ebft b\u00e1nh r\u0103ng v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 \u1ed5 tr\u1ee5c. Bi\u1ebft khi n\u00e0o c\u1ea7n s\u1eed d\u1ee5ng n\u00f3, c\u00e1ch ch\u1ecdn trung t\u00e2m v\u00e0 kho\u1ea3ng, v\u00e0 c\u00e1ch \u0111\u1ecdc ph\u1ed5 \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao k\u1ebft qu\u1ea3 l\u00e0 m\u1ed9t d\u1ea5u hi\u1ec7u c\u1ee7a <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/vibration-analysis\/\">Ph\u00e2n t\u00edch rung \u0111\u1ed9ng<\/a> v\u00e0 ch\u1ea9n \u0111o\u00e1n l\u1ed7i chi ti\u1ebft trong c\u00e1c m\u00e1y m\u00f3c 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 FFT zoom, k\u1ef9 thu\u1eadt ph\u00e2n t\u00edch ph\u1ed5 cung c\u1ea5p \u0111\u1ed9 ph\u00e2n gi\u1ea3i t\u1ea7n s\u1ed1 cao trong c\u00e1c d\u1ea3i h\u1eb9p \u0111\u01b0\u1ee3c ch\u1ecdn, c\u1ea7n thi\u1ebft \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c \u0111\u1ec9nh c\u00f3 kho\u1ea3ng c\u00e1ch g\u1ea7n v\u00e0 ph\u00e2n t\u00edch d\u1ea3i b\u00ean.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-313","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/313","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":2,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/313\/revisions"}],"predecessor-version":[{"id":102165,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/313\/revisions\/102165"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/media?parent=313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/categories?post=313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/tags?post=313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}