{"id":126,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/frequency-response-function\/"},"modified":"2026-05-23T22:28:54","modified_gmt":"2026-05-23T22:28:54","slug":"frequency-response-function","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/vi\/glossary\/frequency-response-function\/","title":{"rendered":"H\u00e0m \u0111\u00e1p \u1ee9ng t\u1ea7n s\u1ed1 (FRF) l\u00e0 g\u00ec?"},"content":{"rendered":"<h1>Hi\u1ec3u v\u1ec1 h\u00e0m \u0111\u00e1p \u1ee9ng t\u1ea7n s\u1ed1 (FRF)<\/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\/126?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\/126?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\/126?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\/126?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\/126?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\/126?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\/126?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\/126?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\/126?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\/126?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\/126?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\/126?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\/126?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\/126?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>The <strong>H\u00e0m \u0111\u00e1p \u1ee9ng t\u1ea7n s\u1ed1 (FRF)<\/strong> m\u00f4 t\u1ea3 c\u00e1ch m\u1ed9t c\u1ea5u tr\u00fac, th\u00e0nh ph\u1ea7n ho\u1eb7c h\u1ec7 th\u1ed1ng ph\u1ea3n \u1ee9ng v\u1edbi l\u1ef1c k\u00edch th\u00edch t\u00e1c d\u1ee5ng nh\u01b0 m\u1ed9t h\u00e0m c\u1ee7a t\u1ea7n s\u1ed1. N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, n\u00f3 cho b\u1ea1n bi\u1ebft m\u1ed9t h\u1ec7 th\u1ed1ng s\u1ebd <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/vibration\/\">rung<\/a> \u1edf m\u1ed7i t\u1ea7n s\u1ed1 khi b\u1ea1n &#8220;t\u00e1c \u0111\u1ed9ng&#8221; n\u00f3 b\u1eb1ng m\u1ed9t l\u1ef1c \u0111\u00e3 bi\u1ebft. FRF l\u00e0 m\u1ed9t n\u1ec1n t\u1ea3ng c\u1ee7a \u0111\u1ed9ng l\u1ef1c h\u1ecdc c\u1ea5u tr\u00fac, <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/modal-analysis\/\">ph\u00e2n t\u00edch modal<\/a> and <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/resonance\/\">s\u1ef1 c\u1ed9ng h\u01b0\u1edfng<\/a> ph\u00e1t hi\u1ec7n \u2014 v\u00e0 \u0111\u00f3 l\u00e0 c\u00e1ch tr\u1ef1c ti\u1ebfp nh\u1ea5t \u0111\u1ec3 t\u00ecm <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/natural-frequency\/\">t\u1ea7n s\u1ed1 t\u1ef1 nhi\u00ean<\/a> tr\u01b0\u1edbc khi ch\u00fang g\u00e2y ra s\u1ef1 c\u1ed1.<\/p>\n<p>V\u1ec1 m\u1eb7t to\u00e1n h\u1ecdc, FRF l\u00e0 m\u1ed9t <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/transfer-function\/\">h\u00e0m truy\u1ec1n<\/a> li\u00ean quan \u0111\u1ebfn m\u1ed9t ph\u1ea3n \u1ee9ng \u0111\u1ea7u ra \u0111o \u0111\u01b0\u1ee3c (th\u01b0\u1eddng l\u00e0 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/acceleration\/\">gia t\u1ed1c<\/a>) \u0111\u1ed1i v\u1edbi m\u1ed9t l\u1ef1c \u0111\u1ea7u v\u00e0o \u0111o \u0111\u01b0\u1ee3c:<\/p>\n<blockquote><p>\n    <strong>FRF = Ph\u1ea3n \u1ee9ng \u0111\u1ea7u ra \/ L\u1ef1c \u0111\u1ea7u v\u00e0o<\/strong>\n<\/p><\/blockquote>\n<p>C\u1ea3 \u0111\u1ea7u ra v\u00e0 \u0111\u1ea7u v\u00e0o \u0111\u1ec1u l\u00e0 c\u00e1c h\u00e0m c\u1ee7a t\u1ea7n s\u1ed1, v\u00e0 FRF ch\u00ednh n\u00f3 l\u00e0 m\u1ed9t <em>ph\u1ee9c t\u1ea1p<\/em> ch\u1ee9c n\u0103ng \u2014 n\u00f3 mang c\u1ea3 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/amplitude\/\">bi\u00ean \u0111\u1ed9<\/a> and <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/phase\/\">pha<\/a> th\u00f4ng tin \u1edf m\u1ed7i d\u00f2ng t\u1ea7n s\u1ed1. N\u1ed9i dung pha \u0111\u00f3 l\u00e0 \u0111i\u1ec1u l\u00e0m cho FRF nhi\u1ec1u th\u00f4ng tin h\u01a1n so v\u1edbi m\u1ed9t ho\u1ea1t \u0111\u1ed9ng th\u00f4ng th\u01b0\u1eddng <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/spectrum\/\">ph\u1ed5<\/a>, c\u00e1i ghi l\u1ea1i ph\u1ea3n \u1ee9ng nh\u01b0ng kh\u00f4ng ghi l\u1ea1i l\u1ef1c g\u00e2y ra n\u00f3.<\/p>\n<h2>1. \u0110\u1ecbnh ngh\u0129a: FRF Th\u1ef1c s\u1ef1 \u0110o l\u01b0\u1eddng C\u00e1i g\u00ec<\/h2>\n<p>M\u1ed9t ph\u1ed5 rung th\u00f4ng th\u01b0\u1eddng cho b\u1ea1n bi\u1ebft m\u00e1y rung m\u1ea1nh nh\u01b0 th\u1ebf n\u00e0o, nh\u01b0ng kh\u00f4ng <em>T\u1ea1i sao<\/em>. H\u00e0m FRF tr\u1ea3 l\u1eddi m\u1ed9t c\u00e2u h\u1ecfi kh\u00e1c nhau v\u00e0 c\u01a1 b\u1ea3n h\u01a1n: xu h\u01b0\u1edbng v\u1ed1n c\u00f3 c\u1ee7a k\u1ebft c\u1ea5u l\u00e0 g\u00ec \u0111\u1ec3 khu\u1ebfch \u0111\u1ea1i chuy\u1ec3n \u0111\u1ed9ng \u1edf m\u1ed7i t\u1ea7n s\u1ed1, \u0111\u1ed9c l\u1eadp v\u1edbi vi\u1ec7c n\u00f3 b\u1ecb k\u00edch ho\u1ea1t m\u1ea1nh nh\u01b0 th\u1ebf n\u00e0o? V\u00ec n\u00f3 chu\u1ea9n h\u00f3a ph\u1ea3n \u1ee9ng theo l\u1ef1c \u0111\u1ea7u v\u00e0o \u0111\u00e3 bi\u1ebft, n\u00ean FRF l\u00e0 m\u1ed9t thu\u1ed9c t\u00ednh c\u1ee7a b\u1ea3n th\u00e2n k\u1ebft c\u1ea5u&#8217;s \u2014 kh\u1ed1i l\u01b0\u1ee3ng, \u0111\u1ed9 c\u1ee9ng v\u00e0 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/damping\/\">gi\u1ea3m ch\u1ea5n<\/a> \u2014 kh\u00f4ng ph\u1ea3i c\u1ee7a b\u1ea5t k\u1ef3 l\u1ef1c n\u00e0o c\u00f3 m\u1eb7t v\u00e0o m\u1ed9t ng\u00e0y nh\u1ea5t \u0111\u1ecbnh. T\u00f9y theo \u0111\u01a1n v\u1ecb ph\u1ea3n \u1ee9ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, c\u00f9ng m\u1ed9t ph\u00e9p \u0111o c\u00f3 t\u00ean kh\u00e1c nhau: gia t\u1ed1c h\u00f3a (gia t\u1ed1c\/l\u1ef1c), kh\u1ea3 n\u0103ng chuy\u1ec3n \u0111\u1ed9ng (v\u1eadn t\u1ed1c\/l\u1ef1c) ho\u1eb7c kh\u1ea3 n\u0103ng ti\u1ebfp nh\u1eadn (chuy\u1ec3n v\u1ecb\/l\u1ef1c), nh\u01b0ng t\u1ea5t c\u1ea3 \u0111\u1ec1u l\u00e0 c\u00e1c d\u1ea1ng c\u1ee7a FRF.<\/p>\n<h2>2. FRF \u0111\u01b0\u1ee3c \u0111o nh\u01b0 th\u1ebf n\u00e0o?<\/h2>\n<p>Ph\u01b0\u01a1ng ph\u00e1p tr\u01b0\u1eddng \u0111i\u1ec3n h\u00ecnh l\u00e0 <strong><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/bump-test\/\">ki\u1ec3m tra va ch\u1ea1m<\/a><\/strong>, c\u00f2n g\u1ecdi l\u00e0 m\u1ed9t b\u00e0i ki\u1ec3m tra t\u00e1c \u0111\u1ed9ng:<\/p>\n<ol>\n<li>M\u1ed8T <strong><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/accelerometer\/\">c\u1ea3m bi\u1ebfn gia t\u1ed1c<\/a><\/strong> \u0111\u01b0\u1ee3c g\u1eafn tr\u00ean c\u1ea5u tr\u00fac t\u1ea1i \u0111i\u1ec3m c\u1ea7n \u0111o ph\u1ea3n \u1ee9ng.<\/li>\n<li>K\u1ebft c\u1ea5u b\u1ecb va \u0111\u1eadp t\u1ea1i m\u1ed9t \u0111i\u1ec3m \u0111\u01b0\u1ee3c ch\u1ecdn v\u1edbi m\u1ed9t <strong>b\u00faa c\u00f3 d\u1ee5ng c\u1ee5<\/strong> \u2014 c\u00e1i b\u00faa c\u00f3 c\u1ea3m bi\u1ebfn l\u1ef1c (\u00f4 t\u1ea3i) \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p trong \u0111\u1ea7u c\u1ee7a n\u00f3 \u0111\u1ec3 \u0111o l\u1ef1c \u0111\u1ea7u v\u00e0o c\u1ee7a m\u1ed7i va \u0111\u1eadp.<\/li>\n<li>M\u1ed9t k\u00eanh \u0111a k\u00eanh <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/vibration-analyzer\/\">m\u00e1y ph\u00e2n t\u00edch rung \u0111\u1ed9ng<\/a> \u0111\u1ed3ng th\u1eddi ghi l\u1ea1i c\u1ea3 t\u00edn hi\u1ec7u \u0111\u1ea7u v\u00e0o t\u1eeb b\u00faa v\u00e0 t\u00edn hi\u1ec7u \u0111\u1ea7u ra t\u1eeb m\u00e1y \u0111o gia t\u1ed1c.<\/li>\n<li>B\u1ed9 ph\u00e2n t\u00edch th\u1ef1c hi\u1ec7n m\u1ed9t <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/fft\/\">FFT<\/a> tr\u00ean c\u1ea3 hai t\u00edn hi\u1ec7u v\u00e0 t\u00ednh to\u00e1n t\u1ef7 l\u1ec7 \u0111\u1ea7u ra so v\u1edbi \u0111\u1ea7u v\u00e0o \u1edf m\u1ed7i d\u00f2ng t\u1ea7n s\u1ed1. T\u1ef7 l\u1ec7 \u0111\u00f3 l\u00e0 FRF.<\/li>\n<\/ol>\n<p>Quy tr\u00ecnh \u0111\u01b0\u1ee3c l\u1eb7p l\u1ea1i trong m\u1ed9t s\u1ed1 va \u0111\u1eadp v\u00e0 c\u00e1c k\u1ebft qu\u1ea3 \u0111\u01b0\u1ee3c l\u1ea5y trung b\u00ecnh, \u0111i\u1ec1u n\u00e0y l\u00e0m gi\u1ea3m ti\u1ebfng \u1ed3n ng\u1eabu nhi\u00ean v\u00e0 mang l\u1ea1i ph\u00e9p \u0111o s\u1ea1ch v\u00e0 \u0111\u00e1ng tin c\u1eady. <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/coherence\/\">\u0111\u1ed9 t\u01b0\u01a1ng quan<\/a> h\u00e0m \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n c\u00f9ng v\u1edbi FRF nh\u01b0 m\u1ed9t ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng: \u0111\u1ed9 li\u00ean h\u1ec7 g\u1ea7n b\u1eb1ng 1,0 trong d\u1ea3i t\u1ea7n s\u1ed1 quan t\u00e2m x\u00e1c nh\u1eadn r\u1eb1ng ph\u1ea3n \u1ee9ng \u0111\u01b0\u1ee3c \u0111o th\u1ef1c s\u1ef1 \u0111\u01b0\u1ee3c g\u00e2y ra b\u1edfi \u0111\u1ea7u v\u00e0o \u0111\u01b0\u1ee3c \u0111o v\u00e0 kh\u00f4ng ph\u1ea3i do ti\u1ebfng \u1ed3n ngo\u1ea1i lai, c\u1ea3m bi\u1ebfn ng\u1ed3i k\u00e9m, ho\u1eb7c va \u0111\u1eadp b\u00faa k\u00e9p.<\/p>\n<h2>3. Di\u1ec5n gi\u1ea3i bi\u1ec3u \u0111\u1ed3 FRF<\/h2>\n<p>FRF th\u01b0\u1eddng \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb d\u01b0\u1edbi d\u1ea1ng m\u1ed9t c\u1eb7p bi\u1ec3u \u0111\u1ed3 ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1ecdc c\u00f9ng nhau:<\/p>\n<ul>\n<li><strong>Bi\u1ec3u \u0111\u1ed3 bi\u00ean \u0111\u1ed9:<\/strong> hi\u1ec3n th\u1ecb bi\u00ean \u0111\u1ed9 c\u1ee7a FRF so v\u1edbi t\u1ea7n s\u1ed1. N\u00f3 ch\u1ee9a c\u00e1c \u0111\u1ec9nh ri\u00eang bi\u1ec7t v\u00e0 t\u1ea7n s\u1ed1 c\u1ee7a m\u1ed7i \u0111\u1ec9nh l\u00e0 m\u1ed9t <strong>t\u1ea7n s\u1ed1 t\u1ef1 nhi\u00ean (c\u1ed9ng h\u01b0\u1edfng)<\/strong> c\u1ee7a k\u1ebft c\u1ea5u. Chi\u1ec1u cao v\u00e0 \u0111\u1ed9 s\u1eafc n\u00e9t c\u1ee7a m\u1ed7i \u0111\u1ec9nh ch\u1ec9 ra bao nhi\u00eau khu\u1ebfch \u0111\u1ea1i x\u1ea3y ra \u1edf \u0111\u00f3 v\u00e0 c\u00f3 bao nhi\u00eau <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/damping\/\">gi\u1ea3m ch\u1ea5n<\/a> hi\u1ec7n di\u1ec7n \u2014 \u0111\u1ec9nh cao, h\u1eb9p c\u00f3 ngh\u0129a l\u00e0 gi\u1ea3m nh\u1eb9 v\u00e0 khu\u1ebfch \u0111\u1ea1i m\u1ea1nh, \u0111\u1ec9nh th\u1ea5p, r\u1ed9ng c\u00f3 ngh\u0129a l\u00e0 gi\u1ea3m ch\u1ec9nh n\u1eb7ng.<\/li>\n<li><strong>Bi\u1ec3u \u0111\u1ed3 pha:<\/strong> hi\u1ec3n th\u1ecb s\u1ef1 thay \u0111\u1ed5i pha gi\u1eefa ph\u1ea3n \u1ee9ng v\u00e0 l\u1ef1c \u0111\u1ea7u v\u00e0o so v\u1edbi t\u1ea7n s\u1ed1. Khi t\u1ea7n s\u1ed1 qu\u00e9t qua m\u1ed9t c\u1ed9ng h\u01b0\u1edfng, pha th\u1ef1c hi\u1ec7n s\u1ef1 thay \u0111\u1ed5i 180\u00b0 \u0111\u1eb7c tr\u01b0ng, \u0111i qua 90\u00b0 ch\u00ednh x\u00e1c \u1edf t\u1ea7n s\u1ed1 t\u1ef1 nhi\u00ean. H\u00e0nh vi pha n\u00e0y l\u00e0 x\u00e1c nh\u1eadn ch\u1eafc ch\u1eafn r\u1eb1ng m\u1ed9t \u0111\u1ec9nh th\u1ef1c s\u1ef1 l\u00e0 m\u1ed9t c\u1ed9ng h\u01b0\u1edfng v\u00e0 kh\u00f4ng ph\u1ea3i, ch\u1eb3ng h\u1ea1n, m\u1ed9t hi\u1ec7n v\u1eadt \u0111o.<\/li>\n<\/ul>\n<p>\u0110\u1ecdc c\u1ea3 hai \u0111\u1ed3 th\u1ecb song song l\u00e0 bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7: m\u1ed9t ch\u1ebf \u0111\u1ed9 th\u1ef1c s\u1ef1 cho th\u1ea5y c\u1ea3 \u0111\u1ec9nh \u0111\u1ed9 l\u1edbn v\u00e0 s\u1ef1 t\u01b0\u01a1ng \u1ee9ng c\u1ee7a phase rollover, trong khi c\u00e1c \u0111\u1ec9nh gi\u1ea3 m\u1ea1o th\u01b0\u1eddng kh\u00f4ng c\u00f3.<\/p>\n<h2>4. \u1ee8ng d\u1ee5ng trong ch\u1ea9n \u0111o\u00e1n rung \u0111\u1ed9ng<\/h2>\n<p>FRF l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ec3 ch\u1ea9n \u0111o\u00e1n v\u00e0 kh\u1eafc ph\u1ee5c c\u00e1c v\u1ea5n \u0111\u1ec1 c\u1ed9ng h\u01b0\u1edfng trong m\u00e1y m\u00f3c v\u00e0 c\u00e1c k\u1ebft c\u1ea5u h\u1ed7 tr\u1ee3:<\/p>\n<ul>\n<li><strong>X\u00e1c \u0111\u1ecbnh t\u1ea7n s\u1ed1 t\u1ef1 nhi\u00ean:<\/strong> s\u1eed d\u1ee5ng ch\u00ednh c\u1ee7a n\u00f3 &#8212; x\u00e1c \u0111\u1ecbnh c\u00e1c t\u1ea7n s\u1ed1 t\u1ef1 nhi\u00ean c\u1ee7a m\u00e1y, b\u1ec7 \u0111\u1eb7t, \u1ed1ng d\u1eabn k\u1ebft n\u1ed1i ho\u1eb7c xung quanh <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/structural-resonance\/\">c\u1ea5u tr\u00fac h\u1ed7 tr\u1ee3<\/a>.<\/li>\n<li><strong>X\u00e1c nh\u1eadn c\u1ed9ng h\u01b0\u1edfng:<\/strong> n\u1ebfu m\u1ed9t m\u00e1y rung \u0111\u1ed9ng m\u1ea1nh \u1edf m\u1ed9t t\u1ea7n s\u1ed1 c\u1ee5 th\u1ec3 trong ho\u1ea1t \u0111\u1ed9ng, ph\u00e9p \u0111o FRF s\u1ebd ti\u1ebft l\u1ed9 li\u1ec7u t\u1ea7n s\u1ed1 v\u1eadn h\u00e0nh \u0111\u00f3 c\u00f3 tr\u00f9ng v\u1edbi t\u1ea7n s\u1ed1 t\u1ef1 nhi\u00ean c\u1ee7a k\u1ebft c\u1ea5u hay kh\u00f4ng. Khi m\u1ed9t \u0111\u1ec9nh trong ph\u1ed5 v\u1eadn h\u00e0nh tr\u00f9ng v\u1edbi m\u1ed9t \u0111\u1ec9nh trong FRF, c\u1ed9ng h\u01b0\u1edfng \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn l\u00e0 nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 c\u1ee7a rung \u0111\u1ed9ng cao &#8212; m\u1ed9t c\u00e2u tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c h\u01a1n nhi\u1ec1u so v\u1edbi d\u1eef li\u1ec7u ph\u1ed5 ri\u00eang l\u1ebb c\u00f3 th\u1ec3 cung c\u1ea5p.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/modal-analysis\/\">Ph\u00e2n t\u00edch m\u00f4 h\u00ecnh<\/a>:<\/strong> b\u1eb1ng c\u00e1ch th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p \u0111o FRF t\u1ea1i nhi\u1ec1u \u0111i\u1ec3m tr\u00ean k\u1ebft c\u1ea5u, c\u00f3 th\u1ec3 x\u00e2y d\u1ef1ng m\u1ed9t m\u00f4 h\u00ecnh \u0111\u1ea7y \u0111\u1ee7 c\u00e1c ch\u1ebf \u0111\u1ed9 rung \u0111\u1ed9ng c\u1ee7a n\u00f3 &#8212; c\u00e1c <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/mode-shape\/\">h\u00ecnh d\u1ea1ng ch\u1ebf \u0111\u1ed9<\/a>, ho\u1eb7c c\u00e1c h\u00ecnh d\u00e1ng bi\u1ebfn d\u1ea1ng v\u1eadn h\u00e0nh t\u1ea1i c\u1ed9ng h\u01b0\u1edfng &#8212; c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng. M\u00f4 h\u00ecnh n\u00e0y kh\u00f4ng ch\u1ec9 hi\u1ec3n th\u1ecb t\u1ea7n s\u1ed1 c\u1ee7a m\u1ed7i ch\u1ebf \u0111\u1ed9 m\u00e0 c\u00f2n h\u00ecnh d\u1ea1ng m\u00e0 k\u1ebft c\u1ea5u bi\u1ebfn d\u1ea1ng.<\/li>\n<li><strong>S\u1eeda \u0111\u1ed5i k\u1ebft c\u1ea5u (ph\u00e2n t\u00edch &#8220;what-if&#8221;):<\/strong> khi c\u1ed9ng h\u01b0\u1edfng \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn, m\u00f4 h\u00ecnh modal c\u00f3 th\u1ec3 m\u00f4 ph\u1ecfng t\u00e1c \u0111\u1ed9ng c\u1ee7a c\u00e1c gi\u1ea3i ph\u00e1p \u1ee9ng c\u1eed vi\u00ean &#8212; v\u00ed d\u1ee5 nh\u01b0 th\u00eam m\u1ed9t d\u00e2y b\u00f3 ch\u1eb7t ho\u1eb7c m\u1ed9t kh\u1ed1i l\u01b0\u1ee3ng \u0111i\u1ec1u ch\u1ec9nh &#8212; tr\u01b0\u1edbc khi c\u1eaft b\u1ea5t k\u1ef3 kim lo\u1ea1i n\u00e0o, v\u00ec v\u1eady gi\u1ea3i ph\u00e1p \u0111\u01b0\u1ee3c ch\u1ecdn \u0111\u01b0\u1ee3c bi\u1ebft l\u00e0 s\u1ebd ho\u1ea1t \u0111\u1ed9ng tr\u01b0\u1edbc.<\/li>\n<\/ul>\n<h2>5. T\u1ea1i Sao FRF Quan Tr\u1ecdng Trong M\u00e1y Quay<\/h2>\n<p>C\u1ed9ng h\u01b0\u1edfng l\u00e0 m\u1ed9t trong nh\u1eefng l\u00fd do ph\u1ed5 bi\u1ebfn nh\u1ea5t khi\u1ebfn m\u1ed9t rotor \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng \u0111\u00fang c\u00e1ch <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/balancing\/\">c\u00e2n b\u1eb1ng<\/a> v\u1eabn rung qu\u00e1 nhi\u1ec1u. N\u1ebfu m\u00e1y c\u1ee7a b\u1ea1n&#8217;s <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/running-speed\/\">t\u1ed1c \u0111\u1ed9 v\u1eadn h\u00e0nh<\/a> x\u1ea3y ra tr\u00f9ng v\u1edbi m\u1ed9t t\u1ea7n s\u1ed1 t\u1ef1 nhi\u00ean c\u1ee7a k\u1ebft c\u1ea5u, ngay c\u1ea3 m\u1ed9t <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/residual-unbalance\/\">m\u1ea5t c\u00e2n b\u1eb1ng c\u00f2n l\u1ea1i<\/a> \u0111\u01b0\u1ee3c khu\u1ebfch \u0111\u1ea1i l\u1edbn, v\u00e0 kh\u00f4ng c\u00f3 l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng th\u00eam n\u00e0o s\u1ebd l\u00e0m gi\u1ea3m rung \u0111\u1ed9ng. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao FRF ho\u1eb7c b\u00e0i ki\u1ec3m tra bump n\u00ean c\u00f3 trong b\u1ed9 c\u00f4ng c\u1ee5 c\u1ee7a k\u1ef9 s\u01b0 c\u00e2n b\u1eb1ng: khi m\u1ed9t rotor t\u1eeb ch\u1ed1i c\u00e2n b\u1eb1ng, FRF ti\u1ebft l\u1ed9 li\u1ec7u th\u1ee7 ph\u1ea1m th\u1ef1c s\u1ef1 l\u00e0 h\u1ed7 tr\u1ee3 c\u1ed9ng h\u01b0\u1edfng thay v\u00ec ch\u00ednh rotor. Trong th\u1ef1c ti\u1ec5n, \u0111i\u1ec1u n\u00e0y th\u01b0\u1eddng di\u1ec5n ra v\u1edbi m\u1ed9t thi\u1ebft b\u1ecb duy nh\u1ea5t &#8212; m\u1ed9t m\u00e1y ph\u00e2n t\u00edch hai k\u00eanh di \u0111\u1ed9ng nh\u01b0 <a href=\"https:\/\/vibromera.eu\/vi\/san-pham\/balanset-1\/\">Balanset-1A<\/a> c\u00f3 th\u1ec3 ghi l\u1ea1i bi\u00ean \u0111\u1ed9 1\u00d7 v\u00e0 pha v\u1ecb tr\u00ed \u0111\u1eb7c tr\u01b0ng cho \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh, trong khi b\u00e0i ki\u1ec3m tra va \u0111\u1eadp tr\u00ean c\u1ea5u tr\u00fac \u0111\u1ee9ng y\u00ean c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh b\u1ea5t k\u1ef3 t\u1ea7n s\u1ed1 c\u1ed9ng h\u01b0\u1edfng g\u1ea7n \u0111\u00f3 m\u00e0 t\u1ed1c \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u00f3 th\u1ec3 k\u00edch th\u00edch. X\u00e1c nh\u1eadn kho\u1ea3ng c\u00e1ch gi\u1eefa t\u1ed1c \u0111\u1ed9 v\u1eadn h\u00e0nh v\u00e0 c\u00e1c c\u1ed9ng h\u01b0\u1edfng c\u1ee7a c\u1ea5u tr\u00fac, v\u1edbi s\u1ef1 tr\u1ee3 gi\u00fap t\u1eeb m\u1ed9t <a href=\"https:\/\/vibromera.eu\/vi\/calculators\/natural-frequency\/\">m\u00e1y t\u00ednh t\u1ea7n s\u1ed1 t\u1ef1 nhi\u00ean<\/a>, th\u01b0\u1eddng gi\u1ea3i th\u00edch m\u1ed9t rung \u0111\u1ed9ng c\u1ee9ng \u0111\u1ea7u m\u00e0 c\u00e2n b\u1eb1ng m\u1ed9t m\u00ecnh kh\u00f4ng bao gi\u1edd c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft.<\/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 H\u00e0m \u0111\u00e1p \u1ee9ng t\u1ea7n s\u1ed1 (FRF), m\u1ed9t ph\u00e9p \u0111o quan tr\u1ecdng trong ph\u00e2n t\u00edch c\u1ea5u tr\u00fac v\u00e0 m\u00f4 h\u00ecnh, m\u00f4 t\u1ea3 c\u00e1ch h\u1ec7 th\u1ed1ng ph\u1ea3n \u1ee9ng v\u1edbi l\u1ef1c \u0111\u1ea7u v\u00e0o.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-126","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/126","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\/126\/revisions"}],"predecessor-version":[{"id":101235,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/126\/revisions\/101235"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/media?parent=126"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/categories?post=126"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/tags?post=126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}