{"id":158,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/low-pass-filter\/"},"modified":"2026-05-23T22:43:47","modified_gmt":"2026-05-23T22:43:47","slug":"low-pass-filter","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/vi\/glossary\/low-pass-filter\/","title":{"rendered":"B\u1ed9 l\u1ecdc th\u00f4ng th\u1ea5p l\u00e0 g\u00ec? Kh\u1eed r\u0103ng c\u01b0a v\u00e0 l\u00e0m m\u1ecbn"},"content":{"rendered":"<h1>Hi\u1ec3u v\u1ec1 b\u1ed9 l\u1ecdc th\u00f4ng th\u1ea5p<\/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\/158?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\/158?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\/158?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\/158?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\/158?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\/158?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\/158?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\/158?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\/158?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\/158?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\/158?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\/158?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\/158?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\/158?add-to-cart=4193\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_4193\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" aria-label=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_4193\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n<p>A <strong>b\u1ed9 l\u1ecdc th\u00f4ng th\u1ea5p<\/strong> (LPF) l\u00e0 m\u1ed9t ph\u1ea7n t\u1eed x\u1eed l\u00fd t\u00edn hi\u1ec7u l\u1ecdc theo t\u1ea7n s\u1ed1 cho ph\u00e9p <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/vibration\/\">rung \u0111\u1ed9ng<\/a> c\u00e1c th\u00e0nh ph\u1ea7n d\u01b0\u1edbi t\u1ea7n s\u1ed1 c\u1eaft \u0111\u01b0\u1ee3c ch\u1ecdn \u0111i qua trong khi l\u00e0m y\u1ebfu c\u00e1c th\u00e0nh ph\u1ea7n ph\u00eda tr\u00ean n\u00f3. Trong <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/vibration-analysis\/\">Ph\u00e2n t\u00edch rung \u0111\u1ed9ng<\/a> n\u00f3 th\u1ef1c hi\u1ec7n ba c\u00f4ng vi\u1ec7c m\u00e0 m\u1ed9t m\u00e1y ph\u00e2n t\u00edch kh\u00f4ng th\u1ec3 l\u00e0m m\u00e0 kh\u00f4ng c\u00f3: ch\u1ed1ng aliasing (ng\u0103n ch\u1eb7n t\u1ea7n s\u1ed1 gi\u1ea3 t\u1eeb xu\u1ea5t hi\u1ec7n trong d\u1eef li\u1ec7u k\u1ef9 thu\u1eadt s\u1ed1), gi\u1ea3m nhi\u1ec5u, v\u00e0 c\u00f4 l\u1eadp v\u00f9ng t\u1ea7n s\u1ed1 th\u1ea5p \u0111\u1ec3 nghi\u00ean c\u1ee9u t\u1eadp trung. \u0110\u00f3 l\u00e0 h\u00ecnh \u1ea3nh g\u01b0\u01a1ng c\u1ee7a <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/high-pass-filter\/\">b\u1ed9 l\u1ecdc th\u00f4ng cao<\/a>, v\u00e0 hai c\u00e1i n\u00e0y l\u00e0 c\u00e1c kh\u1ed1i x\u00e2y d\u1ef1ng c\u1ee7a m\u1ecdi c\u00e1i kh\u00e1c <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/signal-filtering\/\">l\u1ecdc t\u00edn hi\u1ec7u<\/a> s\u01a1 \u0111\u1ed3.<\/p>\n<p>C\u00e1c b\u1ed9 l\u1ecdc th\u00f4ng th\u1ea5p l\u00e0 nh\u1eefng b\u1ed9 l\u1ecdc \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t trong thi\u1ebft b\u1ecb vibration. M\u1ed9t c\u00e1i n\u1eb1m ph\u00eda tr\u01b0\u1edbc b\u1ed9 chuy\u1ec3n \u0111\u1ed5i trong m\u1ecdi h\u1ec7 th\u1ed1ng s\u1ed1 h\u00f3a nh\u01b0 m\u1ed9t b\u1ed9 l\u1ecdc ch\u1ed1ng aliasing b\u1eaft bu\u1ed9c, v\u00e0 c\u00f9ng m\u1ed9t ch\u1ee9c n\u0103ng \u0111\u01b0\u1ee3c cung c\u1ea5p nh\u01b0 m\u1ed9t c\u00f4ng c\u1ee5 ph\u00e2n t\u00edch \u0111\u1ec3 l\u00e0m m\u1ecbn d\u1eef li\u1ec7u, t\u01b0\u1edbc b\u1ecf nhi\u1ec5u t\u1ea7n s\u1ed1 cao, v\u00e0 t\u1eadp trung v\u00e0o c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng t\u1ea7n s\u1ed1 th\u1ea5p. Hi\u1ec3u c\u00e1ch ch\u00fang \u0111\u1ecbnh h\u00ecnh t\u00edn hi\u1ec7u do \u0111\u00f3 l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 tin t\u01b0\u1edfng b\u1ea5t k\u1ef3 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/spectrum\/\">ph\u1ed5<\/a> b\u1ea1n \u0111\u1ecdc.<\/p>\n<h2>1. \u0110\u1eb7c t\u00ednh B\u1ed9 l\u1ecdc<\/h2>\n<h3>T\u1ea7n s\u1ed1 C\u1eaft (f<sub>c<\/sub>)<\/h3>\n<ul>\n<li><strong>S\u1ef1 \u0111\u1ecbnh ngh\u0129a:<\/strong> t\u1ea7n s\u1ed1 t\u1ea1i \u0111\u00f3 \u0111\u00e1p \u1ee9ng b\u1ed9 l\u1ecdc \u0111\u00e3 gi\u1ea3m xu\u1ed1ng &minus;3 dB, t\u1ee9c l\u00e0 70,7% c\u1ee7a bi\u00ean \u0111\u1ed9 d\u1ea3i th\u00f4ng.<\/li>\n<li><strong>D\u01b0\u1edbi f<sub>c<\/sub> (d\u1ea3i th\u00f4ng):<\/strong> c\u00e1c t\u1ea7n s\u1ed1 truy\u1ec1n qua v\u1edbi s\u1ef1 suy hao t\u1ed1i thi\u1ec3u.<\/li>\n<li><strong>Tr\u00ean f<sub>c<\/sub> (d\u1ea3i ch\u1eb7n):<\/strong> t\u1ea7n s\u1ed1 \u0111\u01b0\u1ee3c suy gi\u1ea3m d\u1ea7n.<\/li>\n<li><strong>D\u1ea3i chuy\u1ec3n ti\u1ebfp:<\/strong> v\u00f9ng xung quanh f<sub>c<\/sub> n\u01a1i suy gi\u1ea3m t\u0103ng d\u1ea7n.<\/li>\n<\/ul>\n<h3>Th\u1ee9 t\u1ef1 l\u1ecdc v\u00e0 Roll-Off<\/h3>\n<p>B\u1eadc c\u1ee7a b\u1ed9 l\u1ecdc x\u00e1c \u0111\u1ecbnh m\u1ee9c \u0111\u1ed9 s\u1eafc n\u00e9t c\u1ee7a s\u1ef1 chuy\u1ec3n ti\u1ebfp t\u1eeb d\u1ea3i th\u00f4ng sang d\u1ea3i ch\u1eb7n:<\/p>\n<ul>\n<li><strong>B\u1eadc 1:<\/strong> 6 dB\/octave (20 dB\/decade) \u2014 cu\u1ed9n \u0111i d\u1ea7n.<\/li>\n<li><strong>B\u1eadc 2:<\/strong> 12 dB\/octave (40 dB\/decade) \u2014 trung b\u00ecnh.<\/li>\n<li><strong>B\u1eadc 4:<\/strong> 24 dB\/octave (80 dB\/decade) \u2014\u9661\u5ced.<\/li>\n<li><strong>B\u1eadc 8:<\/strong> 48 dB\/octave (160 dB\/decade) \u2014 r\u1ea5t d\u1ed1c.<\/li>\n<li><strong>B\u1eadc cao h\u01a1n:<\/strong> s\u1ef1 chuy\u1ec3n ti\u1ebfp s\u1eafc n\u00e9t h\u01a1n v\u00e0 kh\u1ea3 n\u0103ng lo\u1ea1i b\u1ecf d\u1ea3i ch\u1eb7n t\u1ed1t h\u01a1n, v\u1edbi chi ph\u00ed l\u00e0 s\u1ef1 d\u1ecbch chuy\u1ec3n pha l\u1edbn h\u01a1n v\u00e0 th\u1eddi gian \u0111\u00e1p \u1ee9ng qu\u00e1 \u0111\u1ed9 l\u00e2u h\u01a1n.<\/li>\n<\/ul>\n<h3>C\u00e1c lo\u1ea1i ph\u1ea3n h\u1ed3i c\u1ee7a b\u1ed9 l\u1ecdc<\/h3>\n<p>C\u00f9ng m\u1ed9t t\u1ea7n s\u1ed1 c\u1eaft v\u00e0 b\u1eadc c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n v\u1edbi c\u00e1c h\u00ecnh d\u1ea1ng to\u00e1n h\u1ecdc kh\u00e1c nhau, m\u1ed7i h\u00ecnh d\u1ea1ng \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa \u0111\u1ed9 ph\u1eb3ng, s\u1eafc n\u00e9t v\u00e0 t\u00ednh ch\u1ea5t pha:<\/p>\n<ul>\n<li><strong>Butterworth:<\/strong> d\u1ea3i th\u00f4ng ph\u1eb3ng t\u1ed1i \u0111a m\u00e0 kh\u00f4ng c\u00f3 g\u1ee3n s\u00f3ng.<\/li>\n<li><strong>Chebyshev:<\/strong> t\u1ea7n s\u1ed1 c\u1eaft s\u1eafc n\u00e9t h\u01a1n, ch\u1ea5p nh\u1eadn g\u1ee3n s\u00f3ng trong d\u1ea3i th\u00f4ng.<\/li>\n<li><strong>Bessel:<\/strong> pha tuy\u1ebfn t\u00ednh, c\u00f3 ngh\u0129a l\u00e0 m\u00e9o d\u1ea1ng s\u00f3ng t\u1ed1i thi\u1ec3u \u2014 l\u1ef1a ch\u1ecdn \u0111\u00fang khi h\u00ecnh d\u1ea1ng c\u1ee7a <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/time-waveform\/\">d\u1ea1ng s\u00f3ng th\u1eddi gian<\/a> l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng.<\/li>\n<li><strong>H\u00ecnh elip:<\/strong> s\u1ef1 chuy\u1ec3n ti\u1ebfp s\u1eafc n\u00e9t nh\u1ea5t c\u00f3 th\u1ec3, v\u1edbi g\u1ee3n s\u00f3ng \u1edf c\u1ea3 d\u1ea3i th\u00f4ng v\u00e0 d\u1ea3i ch\u1eb7n.<\/li>\n<\/ul>\n<h2>2. \u1ee8ng d\u1ee5ng Ch\u00ednh<\/h2>\n<h3>Ch\u1ed1ng Ch\u1ed3ng (quan tr\u1ecdng nh\u1ea5t)<\/h3>\n<p>\u0110\u00e2y l\u00e0 ch\u1ee9c n\u0103ng m\u00e0 kh\u00f4ng c\u00f3 b\u1ed9 s\u1ed1 h\u00f3a n\u00e0o c\u00f3 th\u1ec3 b\u1ecf qua. N\u1ebfu kh\u00f4ng c\u00f3 n\u00f3, c\u00e1c t\u1ea7n s\u1ed1 tr\u00ean gi\u1edbi h\u1ea1n Nyquist s\u1ebd g\u1eadp l\u1ea1i v\u00e0 xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng c\u00e1c \u0111\u1ec9nh gi\u1ea3 \u2014 hi\u1ec7n t\u01b0\u1ee3ng c\u1ee7a <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/aliasing\/\">ch\u1ed3ng ph\u1ed5<\/a>.<\/p>\n<ul>\n<li><strong>M\u1ee5c \u0111\u00edch:<\/strong> ch\u1eb7n c\u00e1c t\u1ea7n s\u1ed1 tr\u00ean t\u1ea7n s\u1ed1 Nyquist (n\u1eeda t\u1ed1c \u0111\u1ed9 l\u1ea5y m\u1eabu).<\/li>\n<li><strong>Y\u00eau c\u1ea7u:<\/strong> n\u00f3 ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng <em>tr\u01b0\u1edbc<\/em> chuy\u1ec3n \u0111\u1ed5i t\u01b0\u01a1ng t\u1ef1 sang k\u1ef9 thu\u1eadt s\u1ed1 \u2014 ph\u1ea7n m\u1ec1m kh\u00f4ng th\u1ec3 lo\u1ea1i b\u1ecf b\u00ed danh sau khi t\u1ea1o ra.<\/li>\n<li><strong>T\u1ea7n s\u1ed1 c\u1eaft \u0111i\u1ec3n h\u00ecnh:<\/strong> 0.4&ndash;0.8 &times; (t\u1ed1c \u0111\u1ed9 l\u1ea5y m\u1eabu \/ 2).<\/li>\n<li><strong>\u0110\u1ed9 d\u1ed1c:<\/strong> Th\u00f4ng th\u01b0\u1eddng b\u1eadc 8 tr\u1edf l\u00ean \u0111\u1ec3 lo\u1ea1i b\u1ecf r\u0103ng c\u01b0a t\u1ed1t<\/li>\n<li><strong>H\u1eadu qu\u1ea3 c\u1ee7a s\u1ef1 b\u1ecf b\u00ea:<\/strong> anti-aliasing kh\u00f4ng \u0111\u1ee7 t\u1ea1o ra c\u00e1c \u0111\u1ec9nh ph\u1ed5 gi\u1ea3 l\u1ea1o l\u1ea1i c\u00e1c l\u1ed7i th\u1ef1c t\u1ebf.<\/li>\n<\/ul>\n<h3>Gi\u1ea3m ti\u1ebfng \u1ed3n<\/h3>\n<ul>\n<li>Lo\u1ea1i b\u1ecf nhi\u1ec5u \u0111i\u1ec7n t\u1ea7n s\u1ed1 cao.<\/li>\n<li>L\u1ecdc ra nhi\u1ec5u c\u1ea3m bi\u1ebfn-c\u00e1p.<\/li>\n<li>L\u00e0m m\u1ecbn d\u1eef li\u1ec7u cho <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/trending\/\">xu h\u01b0\u1edbng<\/a>.<\/li>\n<li>C\u1ea3i thi\u1ec7n t\u1ec9 s\u1ed1 t\u00edn hi\u1ec7u tr\u00ean nhi\u1ec5u cho c\u00e1c th\u00e0nh ph\u1ea7n t\u1ea7n s\u1ed1 th\u1ea5p c\u1ea7n quan t\u00e2m.<\/li>\n<\/ul>\n<h3>Gi\u1edbi h\u1ea1n D\u1ea3i t\u1ea7n s\u1ed1<\/h3>\n<ul>\n<li>T\u1eadp trung ph\u00e2n t\u00edch v\u00e0o d\u1ea3i t\u1ea7n s\u1ed1 quan t\u00e2m.<\/li>\n<li>V\u00ed d\u1ee5: ph\u00e2n t\u00edch 0&ndash;100 Hz cho m\u00e1y ch\u1ea1y \u1edf t\u1ed1c \u0111\u1ed9 th\u1ea5p.<\/li>\n<li>Lo\u1ea1i b\u1ecf n\u1ed9i dung t\u1ea7n s\u1ed1 cao kh\u00f4ng li\u00ean quan.<\/li>\n<li>Gi\u1ea3m y\u00eau c\u1ea7u x\u1eed l\u00fd v\u00e0 l\u01b0u tr\u1eef d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n<h3>Chu\u1ea9n b\u1ecb T\u00edch h\u1ee3p<\/h3>\n<ul>\n<li>\u00c1p d\u1ee5ng tr\u01b0\u1edbc <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/integration\/\">t\u00edch ph\u00e2n<\/a> <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/acceleration\/\">gia t\u1ed1c<\/a> \u0110\u1ebeN <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/velocity\/\">v\u1eadn t\u1ed1c<\/a>.<\/li>\n<li>Lo\u1ea1i b\u1ecf c\u00e1c t\u1ea7n s\u1ed1 r\u1ea5t cao &mdash; nhi\u1ec5u m\u00e0 t\u00edch ph\u00e2n n\u1ebfu kh\u00f4ng s\u1ebd s\u1ebd khu\u1ebfch \u0111\u1ea1i.<\/li>\n<li>T\u1ea7n s\u1ed1 c\u1eaft \u0111i\u1ec3n h\u00ecnh: 1000&ndash;5000 Hz t\u00f9y thu\u1ed9c v\u00e0o \u1ee9ng d\u1ee5ng.<\/li>\n<li>Ng\u0103n ch\u1eb7n khu\u1ebfch \u0111\u1ea1i nhi\u1ec5u m\u00e0 t\u00edch ph\u00e2n kh\u00f4ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t g\u00e2y ra.<\/li>\n<\/ul>\n<h2>3. Ch\u1ecdn T\u1ea7n s\u1ed1 C\u1eaft<\/h2>\n<h3>\u1ee8ng d\u1ee5ng kh\u1eed r\u0103ng c\u01b0a<\/h3>\n<ul>\n<li><strong>Lu\u1eadt l\u1ec7:<\/strong> f<sub>c<\/sub> = 0,4 &times; t\u1ea7n s\u1ed1 l\u1ea5y m\u1eabu (b\u1ea3o th\u1ee7) \u0111\u1ebfn 0,8 &times; t\u1ea7n s\u1ed1 l\u1ea5y m\u1eabu (t\u00edch c\u1ef1c).<\/li>\n<li><strong>V\u00ed d\u1ee5:<\/strong> t\u1ed1c \u0111\u1ed9 l\u1ea5y m\u1eabu 10 kHz cho f<sub>c<\/sub> = 4000 Hz.<\/li>\n<li><strong>Ti\u00eau ch\u00ed:<\/strong> suy gi\u1ea3m d\u1ea3i d\u1eebng l\u1edbn h\u01a1n 60 dB \u1edf t\u1ea7n s\u1ed1 Nyquist.<\/li>\n<\/ul>\n<h3>\u1ee8ng d\u1ee5ng ph\u00e2n t\u00edch<\/h3>\n<ul>\n<li>\u0110\u1eb7t f<sub>c<\/sub> v\u1eeba ph\u00eda tr\u00ean t\u1ea7n s\u1ed1 cao nh\u1ea5t quan t\u00e2m.<\/li>\n<li>\u0110\u1ec3 ph\u00e2n t\u00edch t\u1ea7n s\u1ed1 th\u1ea5p (0&ndash;200 Hz): f<sub>c<\/sub> = 200&ndash;300 Hz.<\/li>\n<li>V\u00ec <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/unbalance\/\">m\u1ea5t c\u00e2n b\u1eb1ng<\/a> ch\u1ec9 (th\u00e0nh ph\u1ea7n 1&times;): f<sub>c<\/sub> = 5&ndash;10&times; <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/running-speed\/\">t\u1ed1c \u0111\u1ed9 v\u1eadn h\u00e0nh<\/a>.<\/li>\n<li>Lu\u00f4n \u0111\u1ec3 l\u1ec1 cho d\u1ea3i chuy\u1ec3n ti\u1ebfp b\u1ed9 l\u1ecdc.<\/li>\n<\/ul>\n<h3>Gi\u1ea3m ti\u1ebfng \u1ed3n<\/h3>\n<ul>\n<li>X\u00e1c \u0111\u1ecbnh d\u1ea3i t\u1ea7n s\u1ed1 nhi\u1ec5u t\u1eeb ph\u1ed5.<\/li>\n<li>\u0110\u1eb7t f<sub>c<\/sub> \u0111\u1ec3 v\u01b0\u1ee3t qua t\u1ea7n s\u1ed1 t\u00edn hi\u1ec7u trong khi lo\u1ea1i b\u1ecf t\u1ea7n s\u1ed1 nhi\u1ec5u.<\/li>\n<li>C\u00e2n b\u1eb1ng lo\u1ea1i b\u1ecf nhi\u1ec5u v\u1edbi b\u1ea3o to\u00e0n t\u00edn hi\u1ec7u.<\/li>\n<\/ul>\n<h2>4. T\u00e1c \u0111\u1ed9ng \u0111\u1ebfn Ph\u00e9p \u0111o<\/h2>\n<h3>Mi\u1ec1n bi\u00ean \u0111\u1ed9<\/h3>\n<ul>\n<li><strong>B\u0103ng th\u00f4ng:<\/strong> thay \u0111\u1ed5i bi\u00ean \u0111\u1ed9 t\u1ed1i thi\u1ec3u, th\u01b0\u1eddng nh\u1ecf h\u01a1n 0,5 dB.<\/li>\n<li><strong>D\u1ea3i d\u1eebng:<\/strong> suy gi\u1ea3m m\u1ea1nh, 40&ndash;80 dB ho\u1eb7c nhi\u1ec1u h\u01a1n.<\/li>\n<li><strong>M\u1ee9c to\u00e0n b\u1ed9:<\/strong> b\u1ed9 l\u1ecdc gi\u1ea3m m\u1ee9c \u0111\u1ecdc rung \u0111\u1ed9ng to\u00e0n b\u1ed9 n\u1ebfu c\u00f3 n\u1ed9i dung t\u1ea7n s\u1ed1 cao \u0111\u00e1ng k\u1ec3.<\/li>\n<\/ul>\n<h3>Mi\u1ec1n th\u1eddi gian<\/h3>\n<ul>\n<li>D\u1ea1ng s\u00f3ng \u0111\u01b0\u1ee3c l\u00e0m m\u1ecbn khi c\u00e1c bi\u1ebfn thi\u00ean t\u1ea7n s\u1ed1 cao b\u1ecb lo\u1ea1i b\u1ecf.<\/li>\n<li>C\u00e1c c\u1ea1nh s\u1eafc n\u00e9t v\u00e0 xung \u0111\u01b0\u1ee3c l\u00e0m tr\u00f2n.<\/li>\n<li>Ph\u1ea3n \u1ee9ng t\u1ea1m th\u1eddi (ti\u1ebfng chu\u00f4ng l\u1ecdc) c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn h\u00ecnh d\u1ea1ng s\u00f3ng<\/li>\n<li>Bi\u1ebfn d\u1ea1ng pha c\u00f3 th\u1ec3 thay \u0111\u1ed5i c\u00e1ch di\u1ec5n gi\u1ea3i d\u1ea1ng s\u00f3ng.<\/li>\n<\/ul>\n<h3>Mi\u1ec1n t\u1ea7n s\u1ed1<\/h3>\n<ul>\n<li>Ph\u1ed5 cho th\u1ea5y bi\u00ean \u0111\u1ed9 gi\u1ea3m \u1edf tr\u00ean t\u1ea7n s\u1ed1 c\u1eaft.<\/li>\n<li>C\u00e1c \u0111\u1ec9nh t\u1ea7n s\u1ed1 cao b\u1ecb gi\u1ea3m ho\u1eb7c lo\u1ea1i b\u1ecf.<\/li>\n<li>S\u00e0n nhi\u1ec5u b\u1ecb h\u1ea1 th\u1ea5p n\u1ebfu nhi\u1ec5u l\u00e0 t\u1ea7n s\u1ed1 cao.<\/li>\n<\/ul>\n<h2>5. C\u00e1c v\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng g\u1eb7p v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n<h3>Kh\u1eed r\u0103ng c\u01b0a kh\u00f4ng \u0111\u1ee7<\/h3>\n<ul>\n<li><strong>Tri\u1ec7u ch\u1ee9ng:<\/strong> c\u00e1c \u0111\u1ec9nh t\u1ea7n s\u1ed1 th\u1ea5p gi\u1ea3 trong ph\u1ed5.<\/li>\n<li><strong>G\u00e2y ra:<\/strong> c\u00e1c t\u1ea7n s\u1ed1 cao g\u1eadp l\u1ea1i d\u01b0\u1edbi t\u1ea7n s\u1ed1 Nyquist.<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong> s\u1eed d\u1ee5ng b\u1ed9 l\u1ecdc d\u1ed1c h\u01a1n, t\u0103ng t\u1ed1c \u0111\u1ed9 l\u1ea5y m\u1eabu, v\u00e0 x\u00e1c minh b\u1ed9 l\u1ecdc \u0111ang ho\u1ea1t \u0111\u1ed9ng.<\/li>\n<\/ul>\n<h3>Ng\u01b0\u1ee1ng qu\u00e1 th\u1ea5p<\/h3>\n<ul>\n<li><strong>Tri\u1ec7u ch\u1ee9ng:<\/strong> c\u00e1c t\u00edn hi\u1ec7u t\u1ea7n s\u1ed1 cao h\u1ee3p l\u1ec7 b\u1ecb gi\u1ea3m.<\/li>\n<li><strong>V\u00ed d\u1ee5:<\/strong> <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/bearing-fault-frequencies\/\">t\u1ea7n s\u1ed1 l\u1ed7i \u1ed5 tr\u1ee5c<\/a> b\u1ecb gi\u1ea3m do b\u1ed9 l\u1ecdc th\u00f4ng th\u1ea5p qu\u00e1 m\u1ea1nh.<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong> t\u0103ng t\u1ea7n s\u1ed1 c\u1eaft ho\u1eb7c s\u1eed d\u1ee5ng \u0111\u1ed9 d\u1ed1c l\u1ecdc m\u1ec1m h\u01a1n.<\/li>\n<\/ul>\n<h3>L\u1ecdc hi\u1ec7n v\u1eadt<\/h3>\n<ul>\n<li><strong>Chu\u00f4ng reo:<\/strong> dao \u0111\u1ed9ng trong mi\u1ec1n th\u1eddi gian do c\u1eaft b\u1ed9 l\u1ecdc s\u1eafc n\u00e9t g\u00e2y ra.<\/li>\n<li><strong>Bi\u1ebfn d\u1ea1ng pha:<\/strong> nh\u1eefng thay \u0111\u1ed5i h\u00ecnh d\u1ea1ng d\u1ea1ng s\u00f3ng ph\u00e1t sinh t\u1eeb nh\u1eefng thay \u0111\u1ed5i pha.<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong> s\u1eed d\u1ee5ng b\u1ed9 l\u1ecdc Bessel cho c\u00e1c \u1ee9ng d\u1ee5ng d\u1ea1ng s\u00f3ng quan tr\u1ecdng n\u01a1i t\u00ednh tuy\u1ebfn t\u00ednh pha quan tr\u1ecdng.<\/li>\n<\/ul>\n<h2>6. B\u1ed9 l\u1ecdc B\u1ed5 sung<\/h2>\n<h3>Th\u00f4ng th\u1ea5p so v\u1edbi th\u00f4ng cao<\/h3>\n<ul>\n<li><strong>Th\u00f4ng th\u1ea5p:<\/strong> cho ph\u00e9p t\u1ea7n s\u1ed1 th\u1ea5p \u0111i qua, ch\u1eb7n t\u1ea7n s\u1ed1 cao.<\/li>\n<li><strong>Th\u00f4ng cao:<\/strong> cho ph\u00e9p t\u1ea7n s\u1ed1 cao \u0111i qua, ch\u1eb7n t\u1ea7n s\u1ed1 th\u1ea5p.<\/li>\n<li><strong>B\u1ed5 sung:<\/strong> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f9ng nhau \u0111\u1ec3 t\u1ea1o th\u00e0nh b\u1ed9 l\u1ecdc th\u00f4ng d\u1ea3i.<\/li>\n<\/ul>\n<h3>B\u1ed9 l\u1ecdc th\u00f4ng d\u1ea3i<\/h3>\n<ul>\n<li>S\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a c\u00e1c giai \u0111o\u1ea1n th\u00f4ng cao c\u1ed9ng v\u1edbi th\u00f4ng th\u1ea5p.<\/li>\n<li>K\u1ebft qu\u1ea3 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/band-pass-filter\/\">b\u1ed9 l\u1ecdc th\u00f4ng d\u1ea3i<\/a> ch\u1ec9 cho ph\u00e9p c\u00e1c t\u1ea7n s\u1ed1 trong m\u1ed9t d\u1ea3i t\u1ea7n s\u1ed1 x\u00e1c \u0111\u1ecbnh.<\/li>\n<li>N\u00f3 t\u1eeb ch\u1ed1i n\u1ed9i dung c\u1ea3 d\u01b0\u1edbi v\u00e0 tr\u00ean d\u1ea3i \u0111\u00f3.<\/li>\n<li>\u0110\u00e2y l\u00e0 ph\u1ea7n \u0111\u1ea7u c\u1ee7a <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/envelope-analysis\/\">ph\u00e2n t\u00edch \u0111\u01b0\u1eddng bao<\/a>, n\u01a1i m\u1ed9t d\u1ea3i xung quanh c\u1ed9ng h\u01b0\u1edfng c\u1ea5u tr\u00fac c\u1ee7a v\u00f2ng bi \u0111\u01b0\u1ee3c c\u00f4 l\u1eadp tr\u01b0\u1edbc khi gi\u1ea3i \u0111i\u1ec1u bi\u1ebfn.<\/li>\n<\/ul>\n<h2>7. V\u1ecb tr\u00ed b\u1ed9 l\u1ecdc th\u00f4ng th\u1ea5p trong th\u1ef1c t\u1ebf<\/h2>\n<p>Tr\u00ean m\u1ed9t thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng tr\u01b0\u1eddng k\u1ef9 thu\u1eadt s\u1ed1, b\u1ed9 l\u1ecdc th\u00f4ng th\u1ea5p h\u1ea7u nh\u01b0 v\u00f4 h\u00ecnh \u2014 n\u00f3 th\u1ef1c hi\u1ec7n c\u00f4ng vi\u1ec7c ch\u1ed1ng b\u00ed danh y\u00ean t\u0129nh b\u00ean trong chu\u1ed7i thu th\u1eadp \u2014 nh\u01b0ng n\u00f3 l\u00e0 c\u01a1 s\u1edf c\u1ee7a \u0111\u1ed9 tin c\u1eady c\u1ee7a m\u1ed7i l\u1ea7n \u0111\u1ecdc. M\u1ed9t b\u1ed9 ph\u00e2n t\u00edch hai k\u00eanh c\u1ea7m tay nh\u01b0 <a href=\"https:\/\/vibromera.eu\/vi\/san-pham\/balanset-1\/\">Balanset-1A<\/a> gi\u1edbi h\u1ea1n d\u1ea3i t\u1ea7n s\u1ed1 m\u1ed7i <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/accelerometer\/\">c\u1ea3m bi\u1ebfn gia t\u1ed1c<\/a> k\u00eanh tr\u01b0\u1edbc l\u1ea5y m\u1eabu, v\u00ec v\u1eady <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/fft\/\">FFT<\/a> n\u00f3 t\u00ednh to\u00e1n cho c\u00e2n b\u1eb1ng v\u00e0 ch\u1ea9n \u0111o\u00e1n \u0111\u01b0\u1ee3c mi\u1ec5n nhi\u1ec5u t\u1eeb b\u00ed danh tr\u00ean to\u00e0n b\u1ed9 ph\u1ea1m vi l\u00e0m vi\u1ec7c c\u1ee7a n\u00f3. V\u1edbi ph\u1ed5 s\u1ea1ch, b\u1ed9 ph\u00e2n t\u00edch c\u00f3 th\u1ec3 ph\u00e2n gi\u1ea3i 1&times; <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/phase\/\">bi\u00ean \u0111\u1ed9 v\u00e0 pha<\/a> c\u1ea7n c\u00e2n b\u1eb1ng m\u1ed9t roto v\u00e0 b\u00e1o c\u00e1o m\u1ed9t <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/residual-unbalance\/\">m\u1ea5t c\u00e2n b\u1eb1ng c\u00f2n l\u1ea1i<\/a>, thay v\u00ec \u0111u\u1ed5i theo m\u1ed9t t\u1ea7n s\u1ed1 \u1ea3o \u0111\u01b0\u1ee3c t\u1ea1o ra do l\u1ecdc k\u00e9m.<\/p>\n<p>B\u1ed9 l\u1ecdc th\u00f4ng th\u1ea5p l\u00e0 nh\u1eefng th\u00e0nh ph\u1ea7n c\u01a1 b\u1ea3n c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng \u0111o l\u01b0\u1eddng rung \u0111\u1ed9ng, th\u1ef1c hi\u1ec7n c\u00e1c ch\u1ee9c n\u0103ng thi\u1ebft y\u1ebfu t\u1eeb b\u1ea3o v\u1ec7 ch\u1ed1ng ghi \u0111\u00e8 t\u1eebng m\u1eabu \u0111\u1ebfn gi\u1ea3m nhi\u1ec5u v\u00e0 l\u1ef1a ch\u1ecdn d\u1ea3i t\u1ea7n s\u1ed1. Hi\u1ec3u r\u00f5 c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ch\u00fang, l\u1ef1a ch\u1ecdn t\u1ea7n s\u1ed1 c\u1eaft m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c, v\u00e0 nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c t\u00e1c \u0111\u1ed9ng c\u1ee7a ch\u00fang \u0111\u1ebfn t\u00edn hi\u1ec7u \u0111o \u0111\u01b0\u1ee3c l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ph\u00e2n t\u00edch ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ec3 tr\u00e1nh c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng \u0111o l\u01b0\u1eddng trong thu th\u1eadp d\u1eef li\u1ec7u k\u1ef9 thu\u1eadt s\u1ed1.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/\">\u2190 Quay l\u1ea1i M\u1ee5c l\u1ee5c ch\u00ednh<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u v\u1ec1 b\u1ed9 l\u1ecdc th\u00f4ng th\u1ea5p trong ph\u00e2n t\u00edch rung \u0111\u1ed9ng, c\u00e1c c\u00f4ng c\u1ee5 x\u1eed l\u00fd t\u00edn hi\u1ec7u cho ph\u00e9p t\u1ea7n s\u1ed1 th\u1ea5p \u0111i qua trong khi ch\u1eb7n t\u1ea7n s\u1ed1 cao, r\u1ea5t c\u1ea7n thi\u1ebft cho vi\u1ec7c kh\u1eed r\u0103ng c\u01b0a v\u00e0 gi\u1ea3m nhi\u1ec5u.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-158","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/158","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\/158\/revisions"}],"predecessor-version":[{"id":101341,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/158\/revisions\/101341"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/media?parent=158"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/categories?post=158"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/tags?post=158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}