{"id":175,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/notch-filter\/"},"modified":"2026-05-23T22:44:07","modified_gmt":"2026-05-23T22:44:07","slug":"notch-filter","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/ro\/glossary\/notch-filter\/","title":{"rendered":"Ce este un filtru Notch? Instrument de respingere a frecven\u021bei"},"content":{"rendered":"<h1>\u00cen\u021belegerea filtrelor Notch<\/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\/ro\/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\/ro\/product\/balanset-1\/\" title=\"Echilibrator portabil \u0219i analizor de vibra\u021bii 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=\"Balanset-1A kit complet \u2014 echilibrator portabil \u0219i analizor de vibra\u021bii\" 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\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/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\/ro\/product\/balanset-1\/\" title=\"Echilibrator portabil \u0219i analizor de vibra\u021bii Balanset-1A\">Echilibrator portabil \u0219i analizor de vibra\u021bii 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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/175?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/175?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Portable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201ePortable balancer &amp; Vibration analyzer Balanset-1A\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/vibration-sensor\/\" title=\"Senzor de vibra\u021bii\">\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=\"Prim-plan senzor de vibra\u021bii 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\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/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\/ro\/product\/vibration-sensor\/\" title=\"Senzor de vibra\u021bii\">Senzor de vibra\u021bii<\/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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/175?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/175?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Vibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201eVibration sensor\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Senzor optic (tahometru cu 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=\"Senzor optic (tahometru cu 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\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/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\/ro\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Senzor optic (tahometru cu laser)\">Senzor optic (tahometru cu 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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/175?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/175?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Optical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201eOptical Sensor (Laser Tachometer)\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/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=\"Kit de echilibrare a rotorului Vibromera: geant\u0103 de transport, condi\u021bioner de semnal multicanal, analizor portabil, baz\u0103 magnetic\u0103, senzori de vibra\u021bii \u0219i cabluri spiralate.\" 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\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/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\/ro\/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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/175?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/175?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Balanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201eBalanset-4\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/magnet-stand\/\" title=\"Stand magnetic 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=\"Baza magnetic\u0103.\" 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\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/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\/ro\/product\/magnet-stand\/\" title=\"Stand magnetic Insize-60-kgf\">Stand magnetic 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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/175?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/175?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Magnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201eMagnetic Stand Insize-60-kgf\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/reflective-tape\/\" title=\"Band\u0103 reflectorizant\u0103\">\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=\"Band\u0103 reflectorizant\u0103\" 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\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/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\/ro\/product\/reflective-tape\/\" title=\"Band\u0103 reflectorizant\u0103\">Band\u0103 reflectorizant\u0103<\/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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/175?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/175?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Reflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201eReflective tape\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/dynamic-balancer-balanset-1a\/\" title=\"Echilibrator dinamic &quot;Balanset-1A&quot; 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=\"Con\u021binutul kitului Balanset-1A cu unitate de interfa\u021b\u0103, senzori, tahometru \u0219i accesorii\" 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\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/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\/ro\/product\/dynamic-balancer-balanset-1a\/\" title=\"Echilibrator dinamic &quot;Balanset-1A&quot; OEM\">Echilibrator dinamic \"Balanset-1A\" 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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/175?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/175?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Dynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201eDynamic balancer \u201cBalanset-1A\u201d OEM\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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>filtru notch<\/strong> \u2014 denumit \u0219i filtru de oprire de band\u0103, filtru de respingere de band\u0103 sau capcan\u0103 de frecven\u021b\u0103 \u2014 este un element de procesare a semnalului selectiv din punct de vedere al frecven\u021bei, care atenueaz\u0103 puternic <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/vibration\/\">vibra\u021bii<\/a> componentele dintr-o band\u0103 \u00eengust\u0103 de frecven\u021b\u0103, l\u0103s\u00e2nd tot ce se afl\u0103 \u00een afara acestei benzi s\u0103 treac\u0103 practic neschimbat. Este exact opusul unui <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/band-pass-filter\/\">filtru trece-band\u0103<\/a>: \u00een loc s\u0103 lase s\u0103 treac\u0103 o singur\u0103 band\u0103 \u0219i s\u0103 blocheze restul, blocheaz\u0103 o singur\u0103 band\u0103 \u0219i las\u0103 restul s\u0103 treac\u0103. \u00cen cadrul setului de instrumente al <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/signal-filtering\/\">filtrarea semnalului<\/a>, filtrul notch este instrumentul chirurgical.<\/p>\n<p>\u00cen <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/vibration-analysis\/\">analiza vibra\u021biilor<\/a>, filtrele de tip notch elimin\u0103 interferen\u021bele dominante, cum ar fi zgomotul electric de 50\/60 Hz, \u0219i suprim\u0103 o component\u0103 de vibra\u021bie cople\u0219itoare (o component\u0103 foarte mare de 1&times; <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/unbalance\/\">dezechilibru<\/a> care acoper\u0103 tot restul), sau s\u0103 elimine o rezonan\u021b\u0103 care ascunde detaliile diagnostice. Practic, acestea \u00eei permit analistului s\u0103 &#8220;vad\u0103 dincolo de&#8221; o frecven\u021b\u0103 dominant\u0103 pentru a dezv\u0103lui componentele mai slabe, dar importante din punct de vedere diagnostic, care se ascund sub aceasta \u00een <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/spectrum\/\">spectru<\/a>.<\/p>\n<h2>1. Caracteristicile filtrului<\/h2>\n<h3>Frecven\u021b\u0103 central\u0103 (crest\u0103tur\u0103)<\/h3>\n<ul>\n<li>Frecven\u021ba de atenuare maxim\u0103 \u2014 cea care este &#8220;eliminat\u0103&#8221;.<\/li>\n<li>Reglat la interferen\u021be specifice sau frecven\u021be nedorite<\/li>\n<li>Atenuarea este de obicei de 40&ndash;60 dB \u00een centrul benzii.<\/li>\n<\/ul>\n<h3>L\u0103\u021bime de band\u0103 Notch<\/h3>\n<ul>\n<li><strong>Filtru \u00eengust (notch):<\/strong> resping o gam\u0103 de frecven\u021be foarte selectiv\u0103 (Q ridicat).<\/li>\n<li><strong>Wide notch:<\/strong> respinge o band\u0103 de frecven\u021b\u0103 mai larg\u0103 (Q redus).<\/li>\n<li><strong>Factorul Q:<\/strong> frecven\u021ba central\u0103 \u00eemp\u0103r\u021bit\u0103 la l\u0103\u021bimea de band\u0103.<\/li>\n<li><strong>Tipic:<\/strong> Q = 10&ndash;50 pentru aplica\u021bii de vibra\u021bii.<\/li>\n<\/ul>\n<h3>Ad\u00e2ncimea de atenuare<\/h3>\n<ul>\n<li>C\u00e2t de mult este redus semnalul la frecven\u021ba notch.<\/li>\n<li>De obicei, 40&ndash;60 dB, ceea ce echivaleaz\u0103 cu o reducere de 100&ndash;1000&times;.<\/li>\n<li>Filtrele de ordin superior asigur\u0103 crest\u0103turi mai ad\u00e2nci.<\/li>\n<li>Frecven\u021bele adiacente sunt afectate \u00eentr-o m\u0103sur\u0103 minim\u0103 atunci c\u00e2nd proiectarea este bine realizat\u0103.<\/li>\n<\/ul>\n<h2>2. Aplica\u021bii uzuale<\/h2>\n<h3>Eliminarea interferen\u021belor electrice<\/h3>\n<p>Eliminarea zgomotului de pe linia de alimentare este aplica\u021bia clasic\u0103:<\/p>\n<ul>\n<li><strong>Filtru notch 60 Hz:<\/strong> elimin\u0103 interferen\u021bele electrice de 60 Hz din America de Nord.<\/li>\n<li><strong>Filtru notch 50 Hz:<\/strong> elimin\u0103 interferen\u021bele de 50 Hz din Europa \u0219i Asia.<\/li>\n<li><strong>Armonice:<\/strong> Crest\u0103turi suplimentare la 120\/180\/240 Hz sau 100\/150\/200 Hz<\/li>\n<li><strong>Beneficiu:<\/strong> un spectru mai clar, care eviden\u021biaz\u0103 vibra\u021bia mecanic\u0103 de baz\u0103.<\/li>\n<li><strong>Aten\u0163ie:<\/strong> nu o utiliza\u021bi dac\u0103 frecven\u021ba dubl\u0103 (2&times;) a re\u021belei (120 sau 100 Hz) are valoare diagnostic\u0103 \u2014 aceast\u0103 band\u0103 este un indicator cheie al <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/electrical-faults\/\">defec\u021biuni electrice<\/a> in motors.<\/li>\n<\/ul>\n<h3>Suprimarea componentelor dominante<\/h3>\n<ul>\n<li><strong>Dezechilibru grav:<\/strong> filtra\u021bi (notch) o component\u0103 cople\u0219itoare de 1&times; pentru a expune celelalte componente.<\/li>\n<li><strong>Angrenaj cu dinte \u00eenalt:<\/strong> a elimina un element dominant <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/gear-mesh-frequency\/\">frecven\u021ba de angrenare<\/a> to reveal <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/bearing-fault-frequencies\/\">frecven\u021bele rulmen\u021bilor<\/a>.<\/li>\n<li><strong>Rezonan\u021b\u0103 puternic\u0103:<\/strong> a suprima o rezonan\u021b\u0103 structural\u0103 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/resonance\/\">rezonan\u021b\u0103<\/a> pentru a vedea excita\u021bia care st\u0103 \u00een spatele acesteia.<\/li>\n<li><strong>Scop:<\/strong> s\u0103 dezv\u0103luie informa\u021bii de diagnostic ascunse.<\/li>\n<\/ul>\n<h3>Eliminarea rezonan\u021bei senzorului<\/h3>\n<ul>\n<li>Elimina\u021bi artefactele din <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/mounting-resonance\/\">rezonan\u021ba la montarea senzorului<\/a>.<\/li>\n<li>Plasa\u021bi filtrul notch la frecven\u021ba de rezonan\u021b\u0103 a monturii, care variaz\u0103 \u00een func\u021bie de metoda de montare.<\/li>\n<li>Asigur\u0103 faptul c\u0103 m\u0103sur\u0103toarea reflect\u0103 performan\u021ba ma\u0219inii, nu a senzorului.<\/li>\n<\/ul>\n<h3>Evitarea artefactelor de aliasing<\/h3>\n<ul>\n<li>Filtra\u021bi (notch) o anumit\u0103 frecven\u021b\u0103 \u00eenalt\u0103 \u00eenainte de reducerea ratei de e\u0219antionare.<\/li>\n<li>Prevents <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/aliasing\/\">aliasare<\/a> a unei componente cunoscute ca fiind puternic\u0103.<\/li>\n<li>Completeaz\u0103 func\u021bia de anti-aliasing <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/low-pass-filter\/\">filtru trece-jos<\/a> \u00een loc s\u0103-l \u00eenlocuiasc\u0103.<\/li>\n<\/ul>\n<h2>3. Aspecte legate de proiectare<\/h2>\n<h3>Crest\u0103tur\u0103 \u00eengust\u0103 (Q ridicat)<\/h3>\n<ul>\n<li><strong>Avantaj:<\/strong> \u00eendep\u0103rtarea chirurgical\u0103 a unei singure frecven\u021be, cu un impact minim asupra vecinilor.<\/li>\n<li><strong>Dezavantaj:<\/strong> frecven\u021ba \u021bint\u0103 trebuie s\u0103 fie cunoscut\u0103 cu precizie \u0219i s\u0103 fie stabil\u0103.<\/li>\n<li><strong>Exemplu:<\/strong> un filtru notch de 60,0 Hz &plusmn; 0,5 Hz pentru interferen\u021be electrice.<\/li>\n<\/ul>\n<h3>Crest\u0103tur\u0103 larg\u0103 (Q sc\u0103zut)<\/h3>\n<ul>\n<li><strong>Avantaj:<\/strong> detecteaz\u0103 varia\u021biile de frecven\u021b\u0103, astfel \u00eenc\u00e2t reglarea nu este at\u00e2t de important\u0103.<\/li>\n<li><strong>Dezavantaj:<\/strong> ar putea afecta frecven\u021bele pe care dorea\u021bi s\u0103 le p\u0103stra\u021bi.<\/li>\n<li><strong>Exemplu:<\/strong> un filtru notch de 1&times; &plusmn; 5 Hz pentru a elimina dezechilibrul rezidual care variaz\u0103 odat\u0103 cu <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/running-speed\/\">viteza de func\u021bionare<\/a> fluctuations.<\/li>\n<\/ul>\n<h3>Compromisul dintre ad\u00e2ncime \u0219i l\u0103\u021bime<\/h3>\n<ul>\n<li>Crest\u0103turile mai ad\u00e2nci (mai mari de 60 dB) necesit\u0103 adesea o l\u0103\u021bime de band\u0103 mai mare.<\/li>\n<li>Crest\u0103turile foarte \u00eenguste pot s\u0103 nu realizeze o atenuare profund\u0103<\/li>\n<li>Optimiza\u021bi echilibrul \u00een func\u021bie de aplica\u021bie.<\/li>\n<\/ul>\n<h2>4. Avantaje \u0219i limit\u0103ri<\/h2>\n<h3>Avantaje<\/h3>\n<ul>\n<li>Elimin\u0103 frecven\u021bele dominante care provoac\u0103 interferen\u021be.<\/li>\n<li>Afi\u0219eaz\u0103 componentele de diagnosticare ascunse.<\/li>\n<li>\u00cembun\u0103t\u0103\u021be\u0219te utilizarea resurselor disponibile <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/dynamic-range\/\">gam\u0103 dinamic\u0103<\/a>.<\/li>\n<li>Permite analistului s\u0103 se concentreze asupra semnalelor mai slabe, dar importante.<\/li>\n<\/ul>\n<h3>Limit\u0103ri \u0219i precau\u021bii<\/h3>\n<ul>\n<li><strong>\u0218terge informa\u021biile:<\/strong> Con\u021binutul eliminat se pierde definitiv din \u00eenregistrarea filtrat\u0103.<\/li>\n<li><strong>Poate ascunde problemele:<\/strong> dac\u0103 frecven\u021ba cu crest\u0103tur\u0103 ar fi avut valoare diagnostic\u0103, defec\u021biunea ar fi trecut neobservat\u0103.<\/li>\n<li><strong>Distorsiunea de faz\u0103:<\/strong> filtrele de tip notch au un impact semnificativ asupra <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/phase\/\">faz\u0103<\/a> \u00een apropierea frecven\u021bei de t\u0103iere.<\/li>\n<li><strong>Oscila\u021bii (ringing):<\/strong> crest\u0103turile accentuate pot genera artefacte \u00een domeniul timpului \u00een <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/time-waveform\/\">form\u0103 de und\u0103 temporal\u0103<\/a>.<\/li>\n<li><strong>Utiliza\u021bi cu pruden\u021b\u0103:<\/strong> o crest\u0103tur\u0103 ar trebui s\u0103 completeze, niciodat\u0103 s\u0103 \u00eenlocuiasc\u0103, analiza nefiltrat\u0103.<\/li>\n<\/ul>\n<h2>5. Cele mai bune practici<\/h2>\n<h3>C\u00e2nd se utilizeaz\u0103 un filtru de tip notch<\/h3>\n<ul>\n<li>Interferen\u021bele cunoscute, cum ar fi zgomotul electric, afecteaz\u0103 m\u0103sur\u0103toarea.<\/li>\n<li>O component\u0103 dominant\u0103 (un dezechilibru grav) \u00eempiedic\u0103 utilizarea la maximum a gamei dinamice.<\/li>\n<li>O analiz\u0103 nefiltrat\u0103 a confirmat deja c\u0103 frecven\u021ba cu crest\u0103tur\u0103 nu are valoare diagnostic\u0103.<\/li>\n<li>Dori\u021bi s\u0103 eviden\u021bia\u021bi un semnal slab pentru o examinare am\u0103nun\u021bit\u0103.<\/li>\n<\/ul>\n<h3>C\u00e2nd nu trebuie s\u0103 folosi\u021bi unul<\/h3>\n<ul>\n<li>M\u0103sur\u0103tori de rutin\u0103 \u2014 se utilizeaz\u0103 date neprelucrate pentru o evaluare general\u0103 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/diagnosis\/\">diagnostic<\/a>.<\/li>\n<li>Atunci c\u00e2nd frecven\u021ba cu crest\u0103tur\u0103 are valoare diagnostic\u0103.<\/li>\n<li>\u00cenainte de a \u00een\u021belege \u00eentregul spectru, f\u0103r\u0103 filtre.<\/li>\n<li>Ca alternativ\u0103 la remedierea sursei efective de interferen\u021b\u0103.<\/li>\n<\/ul>\n<h3>Documenta\u021bie<\/h3>\n<ul>\n<li>Men\u021biona\u021bi \u00eentotdeauna c\u00e2nd s-a utilizat un filtru de tip notch.<\/li>\n<li>\u00cenregistra\u021bi frecven\u021ba de t\u0103iere \u0219i l\u0103\u021bimea de band\u0103.<\/li>\n<li>P\u0103stra\u021bi datele neprelucrate pentru referin\u021b\u0103.<\/li>\n<li>Re\u021bine\u021bi motivul pentru care se utilizeaz\u0103 filtrarea cu t\u0103ietur\u0103 \u00een <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/diagnostic-report\/\">raport de diagnosticare<\/a>.<\/li>\n<\/ul>\n<h2>6. Implementare<\/h2>\n<h3>Filtre Notch Hardware<\/h3>\n<ul>\n<li>Frecven\u021b\u0103 fix\u0103, de obicei 50 sau 60 Hz.<\/li>\n<li>Se activeaz\u0103 \u0219i se dezactiveaz\u0103 dup\u0103 cum este necesar.<\/li>\n<li>Un circuit analogic din interiorul instrumentului.<\/li>\n<li>Func\u021bioneaz\u0103 \u00een timp real.<\/li>\n<\/ul>\n<h3>Filtre Notch software<\/h3>\n<ul>\n<li>Se aplic\u0103 datelor digitalizate dup\u0103 achizi\u021bionare.<\/li>\n<li>Frecven\u021b\u0103 central\u0103 \u0219i l\u0103\u021bime de band\u0103 reglabile.<\/li>\n<li>Se pot testa \u0219i compara diferi\u021bi parametri ai crest\u0103turii.<\/li>\n<li>Nedistructiv \u2014 datele originale sunt p\u0103strate.<\/li>\n<\/ul>\n<h2>7. Filtrul notch \u00een practica de teren<\/h2>\n<p>\u00cen activitatea de teren de zi cu zi, filtrul de band\u0103 \u00ee\u0219i dovede\u0219te utilitatea atunci c\u00e2nd o singur\u0103 frecven\u021b\u0103 acoper\u0103 toate semnalele pe care trebuie s\u0103 le detectezi. Un exemplu frecvent este un rotor cu un dezechilibru semnificativ: un analizor portabil precum <a href=\"https:\/\/vibromera.eu\/ro\/produs\/balanset-1\/\">Balanset-1A<\/a> m\u0103soar\u0103 1&times; <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/phase-angle\/\">amplitudine \u0219i faz\u0103<\/a> directly for <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/echilibrare\/\">echilibrare<\/a>, iar odat\u0103 ce acea component\u0103 dominant\u0103 de 1&times; a fost corectat\u0103, spectrul se deschide, astfel \u00eenc\u00e2t semn\u0103turile mai mici ale rulmen\u021bilor \u0219i angrenajelor devin lizibile f\u0103r\u0103 niciun fel de crest\u0103tur\u0103. Acest lucru ilustreaz\u0103 regula de aur \u2014 ori de c\u00e2te ori este posibil, remedia\u021bi cauza, nu masca\u021bi simptomul. Crest\u0103tura r\u0103m\u00e2ne instrumentul potrivit atunci c\u00e2nd frecven\u021ba problematic\u0103 este cu adev\u0103rat extern\u0103, cum ar fi captarea frecven\u021belor de 50\/60 Hz de pe cablaj, \u0219i se confirm\u0103 c\u0103 nu are nicio semnifica\u021bie mecanic\u0103.<\/p>\n<p>Filtrele notch sunt instrumente specializate de procesare a semnalului care elimin\u0103 selectiv benzi \u00eenguste de frecven\u021b\u0103 dintr-un semnal de vibra\u021bie. Acestea sunt extrem de eficiente \u00een eliminarea interferen\u021belor \u0219i \u00een eviden\u021bierea componentelor mascate, dar trebuie utilizate cu pruden\u021b\u0103 \u0219i cu deplin\u0103 con\u0219tientizare a ceea ce se elimin\u0103 \u2014 asigur\u00e2ndu-v\u0103 \u00eentotdeauna c\u0103 frecven\u021bele eliminate nu con\u021bin informa\u021bii diagnostice importante.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/ro\/glossary\/\">\u2190 \u00cenapoi la indexul principal<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>\u00cenv\u0103\u021ba\u021bi despre filtrele notch (filtre band-stop), instrumente de procesare a semnalului care resping benzile de frecven\u021b\u0103 \u00eenguste, trec\u00e2ndu-le pe toate celelalte, utilizate pentru a elimina interferen\u021bele \u0219i componentele dominante.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-175","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/175","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/175\/revisions"}],"predecessor-version":[{"id":101344,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/175\/revisions\/101344"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/media?parent=175"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/categories?post=175"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/tags?post=175"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}