{"id":44,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/band-pass-filter\/"},"modified":"2026-05-23T22:47:02","modified_gmt":"2026-05-23T22:47:02","slug":"band-pass-filter","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/ro\/glossary\/band-pass-filter\/","title":{"rendered":"Ce este un filtru trece-band\u0103? Selec\u021bia benzii de frecven\u021b\u0103"},"content":{"rendered":"<h1>\u00cen\u021belegerea filtrelor trece-band\u0103<\/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\/44?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\/44?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\/44?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\/44?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\/44?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\/44?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\/44?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\/44?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, 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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\/44?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\/44?add-to-cart=1852\" 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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\/44?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\/44?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\/44?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\/44?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 trece-band\u0103<\/strong> (BPF) este un element de procesare a semnalului selectiv \u00een frecven\u021b\u0103 care permite <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/vibration\/\">vibra\u021bii<\/a> componentele din interiorul unei benzi de frecven\u021b\u0103 selectate trec, \u00een timp ce toate frecven\u021bele situate at\u00e2t sub, c\u00e2t \u0219i peste acea band\u0103 sunt atenuate. Este, de fapt, o combina\u021bie \u00eentre un <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/high-pass-filter\/\">filtru trece-sus<\/a> (care blocheaz\u0103 frecven\u021bele joase) \u0219i un <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/low-pass-filter\/\">filtru trece-jos<\/a> (care blocheaz\u0103 frecven\u021bele \u00eenalte), form\u00e2nd o &#8220;fereastr\u0103&#8221; care permite trecerea doar a unei game selectate de frecven\u021be medii. Fiecare filtru band\u0103-trec\u0103toare este descris prin trei valori: frecven\u021ba sa central\u0103, l\u0103\u021bimea de band\u0103 \u0219i ordinul sau gradul de abruptitate. \u00cen domeniul vibra\u021biilor, filtrul band\u0103-trec\u0103toare este indispensabil pentru <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/envelope-analysis\/\">analiza anvelopei<\/a>, pentru diagnosticarea precis\u0103 \u00eentr-un anumit interval \u0219i pentru a eviden\u021bia semnalele slabe din zgomot, elimin\u00e2nd tot ce se afl\u0103 \u00een afara benzii de interes. Este unul dintre cele mai utilizate instrumente din gama mai larg\u0103 de <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/signal-filtering\/\">filtrarea semnalului<\/a>.<\/p>\n<h2>1. Parametrii filtrului<\/h2>\n<h3>Frecven\u021ba central\u0103 (f\u2080)<\/h3>\n<ul>\n<li>Mijlocul benzii de trecere \u0219i punctul de r\u0103spuns maxim al filtrului.<\/li>\n<li>Ales pentru a corespunde con\u021binutului de frecven\u021b\u0103 de interes \u2014 de obicei o frecven\u021b\u0103 de rezonan\u021b\u0103 sau de defect cunoscut\u0103.<\/li>\n<\/ul>\n<h3>L\u0103\u021bime de band\u0103 (LB)<\/h3>\n<ul>\n<li><strong>Defini\u0163ie:<\/strong> intervalul de frecven\u021b\u0103 dintre punctele de \u22123 dB, f<sub>\u00eenalt<\/sub> - f<sub>sc\u0103zut<\/sub>.<\/li>\n<li><strong>Band\u0103 \u00eengust\u0103:<\/strong> BW &lt; 10% din f\u2080 \u2014 extrem de selectiv.<\/li>\n<li><strong>Band\u0103 larg\u0103:<\/strong> BW &gt; 50% din f\u2080 \u2014 mai pu\u021bin selectiv.<\/li>\n<li><strong>Factorul Q:<\/strong> Q = f\u2080 \/ BW; o valoare mai mare a lui Q \u00eenseamn\u0103 un filtru mai \u00eengust \u0219i mai selectiv.<\/li>\n<\/ul>\n<h3>Caracteristicile filtrului<\/h3>\n<ul>\n<li><strong>Limita inferioar\u0103 (f<sub>sc\u0103zut<\/sub>):<\/strong> unde curba inferioar\u0103 coboar\u0103 la \u22123 dB.<\/li>\n<li><strong>Limita superioar\u0103 (f<sub>\u00eenalt<\/sub>):<\/strong> unde banda superioar\u0103 scade la \u22123 dB.<\/li>\n<li><strong>Factor de form\u0103:<\/strong> raportul dintre l\u0103\u021bimea benzii de oprire \u0219i cea a benzii de trecere \u2014 o m\u0103sur\u0103 a gradului de t\u0103iere brusc\u0103 a filtrului.<\/li>\n<\/ul>\n<h2>2. Aplica\u021bii \u00een analiza vibra\u021biilor<\/h2>\n<h3>2.1 Analiza anvelopei \u2014 utilizarea principal\u0103<\/h3>\n<p>Filtrul band\u0103 este primul pas esen\u021bial \u00een detectarea defectelor rulmen\u021bilor cu elemente de rulare:<\/p>\n<ul>\n<li><strong>Selectarea benzii:<\/strong> de obicei \u00eentre 500 Hz \u0219i 10 kHz sau \u00eentre 1 kHz \u0219i 20 kHz.<\/li>\n<li><strong>Scop:<\/strong> s\u0103 izoleze rezonan\u021bele structurale de \u00eenalt\u0103 frecven\u021b\u0103 generate de \u0219ocurile la nivelul lag\u0103relor.<\/li>\n<li><strong>Proces:<\/strong> BPF \u2192 detectarea anvelopei (<a href=\"https:\/\/vibromera.eu\/ro\/glossary\/demodulation\/\">demodulare<\/a>) \u2192 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/fft\/\">FFT<\/a> a anvelopei.<\/li>\n<li><strong>Rezultat:<\/strong> a <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/bearing-fault-frequencies\/\">frecven\u021bele defectelor rulmen\u021bilor<\/a> se eviden\u021biaz\u0103 clar \u00een rezultatul ob\u021binut <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/envelope-spectrum\/\">spectrul anvelopei<\/a>.<\/li>\n<\/ul>\n<h3>2.2 Analiza benzilor de rezonan\u021b\u0103<\/h3>\n<p>Filtrarea strict\u0103 \u00een jurul unei rezonan\u021be structurale sau de lag\u0103r <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/resonance\/\">rezonan\u021b\u0103<\/a> izoleaz\u0103 energia din acel mod de toate celelalte frecven\u021be, permi\u021b\u00e2ndu-v\u0103 s\u0103 evalua\u021bi excita\u021bia \u0219i r\u0103spunsul la o rezonan\u021b\u0103 specific\u0103 \u2014 un instrument extrem de util \u00een depanarea problemelor legate de rezonan\u021b\u0103.<\/p>\n<h3>2.3 Izolarea \u00een domeniul frecven\u021belor<\/h3>\n<p>Un filtru BPF se poate concentra pe o band\u0103 de frecven\u021b\u0103 aleas\u0103 \u2014 de exemplu, 10\u2013100 Hz pentru aplica\u021bii la frecven\u021be joase \u2014 elimin\u00e2nd deriva de frecven\u021b\u0103 joas\u0103 \u0219i zgomotul de frecven\u021b\u0103 \u00eenalt\u0103 pentru a eviden\u021bia componentele care v\u0103 intereseaz\u0103.<\/p>\n<h3>2.4 Izolarea angrenajelor<\/h3>\n<p>Centrarea benzii pe <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/gear-mesh-frequency\/\">frecven\u021ba de angrenare<\/a> trece de acea frecven\u021b\u0103 maxim\u0103 \u0219i de benzile laterale ale acesteia, resping\u00e2nd \u00een acela\u0219i timp alte trepte ale angrenajului \u0219i frecven\u021bele lag\u0103relor, permi\u021b\u00e2nd o analiz\u0103 precis\u0103 a angrenajului. \u00cen cazul \u00een care obiectivul este urm\u0103rirea unei viteze variabile, mai degrab\u0103 dec\u00e2t a unei benzi fixe, un <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/tracking-filter\/\">filtru de urm\u0103rire<\/a> efectueaz\u0103 aceea\u0219i izolare \u00een raport cu ordinul arborelui.<\/p>\n<h2>3. Proiectarea filtrului band\u0103<\/h2>\n<h3>Trece-jos \u00een cascad\u0103 cu trece-sus<\/h3>\n<p>Cea mai obi\u0219nuit\u0103 implementare const\u0103 pur \u0219i simplu \u00een conectarea \u00een serie a celor dou\u0103 filtre mai simple:<\/p>\n<ul>\n<li>O sec\u021biune de filtrare de trecere \u00eenalt\u0103 blocheaz\u0103 toate frecven\u021bele sub f<sub>sc\u0103zut<\/sub>.<\/li>\n<li>O sec\u021biune de filtrare trece-jos blocheaz\u0103 toate frecven\u021bele de peste f<sub>\u00eenalt<\/sub>.<\/li>\n<li>Conectate \u00een serie, acestea formeaz\u0103 filtrul band\u0103, fiecare sec\u021biune contribuind la selectivitatea general\u0103.<\/li>\n<\/ul>\n<h3>Proiectare direct\u0103 a filtrului trece-band\u0103<\/h3>\n<p>O alt\u0103 variant\u0103 este optimizarea filtrului ca sistem cu o singur\u0103 treapt\u0103, \u00een loc de o configura\u021bie \u00een cascad\u0103. Aceast\u0103 variant\u0103 este mai complex\u0103 din punct de vedere al proiect\u0103rii, dar poate oferi caracteristici \u00eembun\u0103t\u0103\u021bite \u0219i este rezervat\u0103 aplica\u021biilor specializate. O variant\u0103 similar\u0103 este <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/notch-filter\/\">filtru notch<\/a>, care \u00eendepline\u0219te func\u021bia invers\u0103 \u2014 resping\u00e2nd o band\u0103 \u00eengust\u0103 \u0219i l\u0103s\u00e2nd s\u0103 treac\u0103 restul.<\/p>\n<h2>4. Aspecte practice<\/h2>\n<h3>Compromisuri legate de l\u0103\u021bimea de band\u0103<\/h3>\n<p><strong>L\u0103\u021bime de band\u0103 redus\u0103<\/strong> ofer\u0103 o selectivitate mai bun\u0103 \u0219i o suprimare mai eficient\u0103 a frecven\u021belor adiacente, dar poate s\u0103 nu detecteze abaterile de frecven\u021b\u0103 \u0219i necesit\u0103 o reglare precis\u0103 \u2014 fiind cea mai potrivit\u0103 atunci c\u00e2nd frecven\u021ba de interes este cunoscut\u0103 \u0219i stabil\u0103. <strong>L\u0103\u021bime de band\u0103 larg\u0103<\/strong> detecteaz\u0103 varia\u021biile de frecven\u021b\u0103 \u0219i este mult mai u\u0219or de reglat, \u00een schimb resping\u00e2nd mai slab semnalele nedorite din apropiere \u2014 este cea mai bun\u0103 op\u021biune atunci c\u00e2nd frecven\u021ba variaz\u0103 sau c\u00e2nd este important\u0103 o gam\u0103 \u00eentreag\u0103 de frecven\u021be.<\/p>\n<h3>Alegerea benzii pentru analiza anvelopei<\/h3>\n<ul>\n<li><strong>Benzi tipice:<\/strong> 500\u20132.000 Hz, 1.000\u20135.000 Hz \u0219i 5.000\u201320.000 Hz.<\/li>\n<li><strong>Selec\u0163ie:<\/strong> alege banda cu cea mai puternic\u0103 excita\u021bie de rezonan\u021b\u0103 a rulmentului.<\/li>\n<li><strong>Verifica\u021bi:<\/strong> verific\u0103 accelera\u021bia brut\u0103 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/spectrum\/\">spectru<\/a> pentru a identifica mai \u00eent\u00e2i acea rezonan\u021b\u0103.<\/li>\n<li><strong>Optimiza\u021bi:<\/strong> regla\u021bi banda pentru a amplifica semnalul defectului rulmentului.<\/li>\n<\/ul>\n<h2>5. Efectele filtr\u0103rii asupra semnalului<\/h2>\n<h3>Efecte asupra formei de und\u0103 \u00een timp<\/h3>\n<p>filtrat cu filtru band\u0103 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/time-waveform\/\">form\u0103 de und\u0103 temporal\u0103<\/a> afi\u0219eaz\u0103 doar con\u021binutul din banda de trecere. \u00cen cazul unei benzi \u00eenguste, acesta apare sub forma unei purt\u0103toare modulate; varia\u021biile de joas\u0103 frecven\u021b\u0103 \u0219i zgomotul de \u00eenalt\u0103 frecven\u021b\u0103 sunt eliminate, ceea ce poate simplifica considerabil interpretarea.<\/p>\n<h3>Efecte spectrale<\/h3>\n<p>\u00cen spectru, amplitudinile din banda de trecere sunt p\u0103strate, \u00een timp ce amplitudinile din banda de oprire sunt reduse cu aproximativ 40\u201380 dB. Rezultatul este o afi\u0219are mai clar\u0103, concentrat\u0103 pe banda de interes, cu un nivel de zgomot de fond redus oriunde zgomotul se afl\u0103 \u00een afara benzii de trecere.<\/p>\n<h2>6. Digital vs. analog \u0219i benzi \u00een func\u021bie de gama de frecven\u021be<\/h2>\n<h3>Filtre digitale vs. filtre analogice<\/h3>\n<p><strong>Analogic<\/strong> filtrele de band\u0103 sunt implementate hardware \u00een calea semnalului, func\u021bioneaz\u0103 \u00een timp real, au caracteristici fixe odat\u0103 realizate \u0219i sunt utilizate \u00een <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/aliasing\/\">anti-aliasing<\/a> \u0219i prelucrarea semnalului. <strong>Digital<\/strong> filtrele prelucreaz\u0103 semnalul la nivel software dup\u0103 digitalizare, ofer\u0103 parametri reglabili \u0219i pot fi activate sau dezactivate chiar \u0219i dup\u0103 colectarea datelor \u2014 motiv pentru care analizatoarele moderne ofer\u0103 op\u021biuni digitale BPF extinse.<\/p>\n<h3>Benzi comune \u00een func\u021bie de gam\u0103<\/h3>\n<ul>\n<li><strong>Frecven\u021b\u0103 joas\u0103 (10\u2013200 Hz):<\/strong> analiza dezechilibrelor \u0219i a dezax\u0103rii, utilaje cu vitez\u0103 redus\u0103 \u0219i vibra\u021biile funda\u021biilor sau structurilor.<\/li>\n<li><strong>Frecven\u021b\u0103 medie (200\u20132.000 Hz):<\/strong> frecven\u021bele de angrenare ale angrenajelor, frecven\u021bele de trecere ale palelor \u0219i ale lamelor, precum \u0219i frecven\u021bele inferioare de defectare a rulmen\u021bilor.<\/li>\n<li><strong>Frecven\u021b\u0103 \u00eenalt\u0103 (2\u201340 kHz):<\/strong> analiza anvelopei defectelor rulmen\u021bilor, impacturi de \u00eenalt\u0103 frecven\u021b\u0103 \u0219i excita\u021bia rezonan\u021bei rulmen\u021bilor.<\/li>\n<\/ul>\n<h2>7. Filtrarea cu filtru band\u0103 pe teren<\/h2>\n<p>\u00cen practic\u0103, filtrul band\u0103 de trecere este rar utilizat singur \u2014 acesta reprezint\u0103 o etap\u0103 dintr-un lan\u021b de m\u0103surare care, de asemenea, e\u0219antioneaz\u0103, aplic\u0103 ferestre \u0219i transform\u0103 semnalul, astfel \u00eenc\u00e2t banda aleas\u0103 trebuie s\u0103 se \u00eencadreze \u00een l\u0103\u021bimea de band\u0103 de e\u0219antionare a instrumentului. Un analizor portabil cu dou\u0103 canale, precum <a href=\"https:\/\/vibromera.eu\/ro\/produs\/balanset-1\/\">Balanset-1A<\/a> m\u0103soar\u0103 vibra\u021biile \u00een intervalul de frecven\u021b\u0103 cuprins \u00eentre aproximativ 5 Hz \u0219i 1 kHz \u0219i are o rezolu\u021bie de 1\u00d7 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/phase\/\">amplitudine \u0219i faz\u0103<\/a> necesare pentru echilibrarea la fa\u021ba locului; tehnicile de tip band-pass \u0219i envelope completeaz\u0103 apoi acest flux de lucru atunci c\u00e2nd un inginer trebuie s\u0103 confirme dac\u0103 adev\u0103rata surs\u0103 a problemei este un defect al rulmentului la frecven\u021be \u00eenalte, \u0219i nu un simplu dezechilibru. La configurarea unei astfel de analize, <a href=\"https:\/\/vibromera.eu\/ro\/calculators\/fft-resolution-calculator\/\">Calculator de rezolu\u021bie FFT<\/a> ajut\u0103 la adaptarea num\u0103rului de linii \u0219i a l\u0103\u021bimii de band\u0103 la banda pe care inten\u021biona\u021bi s\u0103 o analiza\u021bi, astfel \u00eenc\u00e2t liniile de defect \u0219i benzile laterale situate la distan\u021be mici s\u0103 nu se suprapun\u0103. St\u0103p\u00e2nirea selec\u021biei filtrelor de trecere de band\u0103 \u2014 mai ales pentru analiza anvelopei \u0219i izolarea intervalelor de frecven\u021b\u0103 \u2014 este esen\u021bial\u0103 pentru extragerea unor informa\u021bii diagnostice clare dintr-o semn\u0103tur\u0103 vibra\u021bional\u0103 complex\u0103.<\/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 trece-band\u0103 \u00een analiza vibra\u021biilor, instrumente de procesare a semnalului care transmit frecven\u021be dintr-o band\u0103 selectat\u0103 \u00een timp ce le blocheaz\u0103 pe celelalte, esen\u021biale pentru analiza anvelopei.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-44","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/44","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\/44\/revisions"}],"predecessor-version":[{"id":101372,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/44\/revisions\/101372"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/media?parent=44"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/categories?post=44"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/tags?post=44"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}