{"id":278,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/transfer-function\/"},"modified":"2026-05-23T22:40:04","modified_gmt":"2026-05-23T22:40:04","slug":"transfer-function","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/ro\/glossary\/transfer-function\/","title":{"rendered":"Ce este func\u021bia de transfer? Caracterizarea r\u0103spunsului sistemului"},"content":{"rendered":"<h1>\u00cen\u021belegerea func\u021biei de transfer<\/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\/278?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\/278?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\/278?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\/278?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\/278?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\/278?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\/278?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\/278?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\/278?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\/278?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\/278?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\/278?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\/278?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\/278?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>func\u021bie de transfer<\/strong> \u2014 folosit aproape \u00een mod interschimbabil cu <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/frequency-response-function\/\">func\u021bia de r\u0103spuns \u00een frecven\u021b\u0103 (FRF)<\/a> \u00een domeniul vibra\u021biilor \u2014 este o func\u021bie cu valori complexe care descrie modul \u00een care un sistem mecanic r\u0103spunde la o for\u021b\u0103 sau la o mi\u0219care aplicat\u0103, \u00een func\u021bie de frecven\u021b\u0103. Din punct de vedere matematic, aceasta reprezint\u0103 raportul dintre ie\u0219ire \u0219i intrare la fiecare frecven\u021b\u0103, <em>H(f) = Ie\u0219ire(f) \/ Intrare(f)<\/em>, care con\u021bine at\u00e2t informa\u021bii privind amplitudinea (c\u00e2t de mult amplific\u0103 sau atenueaz\u0103 sistemul), c\u00e2t \u0219i <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/phase\/\">faz\u0103<\/a> informa\u021bii (\u00eent\u00e2rzierea \u0219i comportamentul de rezonan\u021b\u0103). Acolo unde un spectru brut <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/spectrum\/\">spectrul de vibra\u021bii<\/a> \u00ee\u021bi spune ce face o ma\u0219in\u0103 <em>este<\/em> \u00een timp ce, func\u021bia de transfer \u00ee\u021bi arat\u0103 ce anume <em>would<\/em> s\u0103 reac\u021bioneze la orice stimul.<\/p>\n<p>Aceast\u0103 distinc\u021bie este cea care confer\u0103 func\u021biei de transfer o putere at\u00e2t de mare. Ea caracterizeaz\u0103 propriet\u0103\u021bile inerente ale unei structuri \u2014 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/natural-frequency\/\">frecven\u021be naturale<\/a>, <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/damping\/\">amortizare<\/a>, <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/stiffness\/\">rigiditate<\/a>\u0219i <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/mode-shape\/\">forme de mod<\/a> \u2014 indiferent de for\u021bele care ac\u021bioneaz\u0103 \u00een timpul func\u021bion\u0103rii. Acest lucru \u00eel face coloana vertebral\u0103 a <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/modal-analysis\/\">analiz\u0103 modal\u0103<\/a>, predic\u021bia modific\u0103rilor structurale, <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/resonance\/\">rezonan\u021b\u0103<\/a> diagnosticarea \u0219i proiectarea sistemelor de izolare a vibra\u021biilor.<\/p>\n<h2>1. Formularea matematic\u0103<\/h2>\n<p>Defini\u021bia de baz\u0103 este pur \u0219i simplu raportul dintre dou\u0103 spectre m\u0103surate simultan: <strong>H(f) = Y(f) \/ X(f)<\/strong>, unde Y(f) este spectrul de ie\u0219ire (r\u0103spuns), iar X(f) este spectrul de intrare (excita\u021bie).<\/p>\n<h3>Estimatorul spectrului \u00eencruci\u0219at<\/h3>\n<p>\u00cen lumea real\u0103, ambele semnale con\u021bin zgomot, astfel \u00eenc\u00e2t o \u00eemp\u0103r\u021bire simpl\u0103 amplific\u0103 eroarea. Estimatorul standard utilizat \u00een practic\u0103 folose\u0219te, \u00een schimb, medii spectrale: <strong>H(f) = G<sub>xy<\/sub>(f) \/ G<sub>xx<\/sub>(f)<\/strong>, where G<sub>xy<\/sub> este <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/cross-spectrum\/\">spectru \u00eencruci\u0219at<\/a> \u00eentre intrare \u0219i ie\u0219ire \u0219i G<sub>xx<\/sub> este <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/auto-spectrum\/\">autospectru<\/a> a semnalului de intrare. Deoarece zgomotul necorelat de la ie\u0219ire tinde spre zero \u00een spectrul \u00eencruci\u0219at, aceast\u0103 form\u0103 (estimatorul \u201eH1\u201d) elimin\u0103 erorile sistematice cauzate de zgomotul de ie\u0219ire \u0219i reprezint\u0103 metoda utilizat\u0103 \u00een practic\u0103.<\/p>\n<h3>Cele patru componente<\/h3>\n<p>Fiind o func\u021bie cu valori complexe, o func\u021bie de transfer poate fi privit\u0103 din patru perspective, fiecare dintre ele pun\u00e2nd accentul pe un aspect diferit:<\/p>\n<ul>\n<li><strong>Magnitudine |H(f)|:<\/strong> factorul de amplificare la fiecare frecven\u021b\u0103.<\/li>\n<li><strong>Faza \u2220H(f):<\/strong> decalajul de faz\u0103 al semnalului de ie\u0219ire fa\u021b\u0103 de cel de intrare.<\/li>\n<li><strong>Real part:<\/strong> componenta \u00een faz\u0103 a r\u0103spunsului.<\/li>\n<li><strong>Partea imaginar\u0103:<\/strong> componenta de cuadratur\u0103 (90\u00b0), ale c\u0103rei v\u00e2rfuri indic\u0103 clar rezonan\u021bele.<\/li>\n<\/ul>\n<h2>2. Semnifica\u021bia fizic\u0103 \u2014 Citirea amplitudinii \u0219i a fazei<\/h2>\n<h3>Ce \u00ee\u021bi spune magnitudinea<\/h3>\n<ul>\n<li><strong>|H| &gt; 1:<\/strong> sistemul amplific\u0103 la aceast\u0103 frecven\u021b\u0103 \u2014 zona de rezonan\u021b\u0103.<\/li>\n<li><strong>|H| = 1:<\/strong> rezultatul este egal cu intrarea, un r\u0103spuns neutru.<\/li>\n<li><strong>|H| &lt; 1:<\/strong> sistemul atenueaz\u0103, ca \u00een cazul unei izol\u0103ri eficiente sau al func\u021bion\u0103rii la o frecven\u021b\u0103 mult diferit\u0103 de cea de rezonan\u021b\u0103.<\/li>\n<li><strong>Peaks<\/strong> au loc la frecven\u021be naturale, iar acestea <strong>height<\/strong> este determinat\u0103 de amortizare \u2014 cu c\u00e2t v\u00e2rful este mai \u00eenalt \u0219i mai pronun\u021bat, cu at\u00e2t amortizarea este mai redus\u0103.<\/li>\n<\/ul>\n<h3>Ce \u00ee\u021bi spune faza<\/h3>\n<p>Faza este indicatorul de rezonan\u021b\u0103 cel mai fiabil, deoarece se comport\u0103 la fel indiferent de modul \u00een care este scalat graficul:<\/p>\n<ul>\n<li><strong>0\u00b0:<\/strong> ie\u0219ire \u00een faz\u0103 cu intrarea \u2014 zona cu rigiditate controlat\u0103, sub rezonan\u021b\u0103.<\/li>\n<li><strong>90\u00b0:<\/strong> ie\u0219irea are o \u00eent\u00e2rziere de un sfert de ciclu \u2014 exact la rezonan\u021b\u0103.<\/li>\n<li><strong>180\u00b0:<\/strong> ie\u0219ire exact opus\u0103 intr\u0103rii \u2014 regiune controlat\u0103 de mas\u0103, deasupra rezonan\u021bei.<\/li>\n<\/ul>\n<p>Semnul distinctiv al unei rezonan\u021be autentice este aceast\u0103 deplasare de faz\u0103 caracteristic\u0103 de 180\u00b0, pe m\u0103sur\u0103 ce frecven\u021ba variaz\u0103 de la valori sub valoarea maxim\u0103 p\u00e2n\u0103 la valori peste aceasta; o cre\u0219tere a amplitudinii f\u0103r\u0103 o inversare de faz\u0103 asociat\u0103 indic\u0103, de obicei, altceva.<\/p>\n<h2>3. Cum se m\u0103soar\u0103 func\u021bia de transfer<\/h2>\n<h3>Testarea la impact (testul de lovire)<\/h3>\n<p>Cea mai frecvent\u0103 abordare \u00een cazul utilajelor instalate este aceea <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/bump-test\/\">testul cu impact<\/a>: lovi\u021bi structura cu un ciocan echipat cu senzori (care m\u0103soar\u0103 for\u021ba aplicat\u0103) \u00een timp ce un <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/accelerometer\/\">accelerometru<\/a> \u00eenregistreaz\u0103 r\u0103spunsul. Este o metod\u0103 rapid\u0103 \u0219i nu necesit\u0103 alt echipament \u00een afar\u0103 de ciocan \u0219i senzor, de\u0219i o singur\u0103 lovitur\u0103 permite o medie limitat\u0103, iar spectrul for\u021bei utilizabile este determinat de forma v\u00e2rfului ciocanului.<\/p>\n<h3>Testarea cu excitator<\/h3>\n<p>Un excitator electromagnetic controlat ac\u021bioneaz\u0103 asupra structurii cu excita\u021bie aleatorie, sinusoidal\u0103 baleiat\u0103 (cu frecven\u021b\u0103 variabil\u0103) sau de tip chirp, oferind un control excelent at\u00e2t asupra nivelului for\u021bei, c\u00e2t \u0219i asupra con\u021binutului spectral. Acesta reprezint\u0103 standardul de referin\u021b\u0103 pentru <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/impact-testing\/\">testare modal\u0103<\/a> precizie, \u00een schimbul necesit\u0103\u021bii de a dispune de un excitator de vibra\u021bii dedicat.<\/p>\n<h3>M\u0103surare opera\u021bional\u0103<\/h3>\n<p>\u00cen acest caz, for\u021bele proprii ale ma\u0219inii \u00een func\u021biune servesc drept intrare, red\u00e2nd condi\u021biile reale de func\u021bionare, dar sacrific\u00e2nd controlul \u2014 provocarea const\u0103 \u00een identificarea sau m\u0103surarea acelei intr\u0103ri, fie cu ajutorul unui dinamometru, fie printr-un punct de referin\u021b\u0103 adecvat.<\/p>\n<h2>4. \u00cen ce situa\u021bii se utilizeaz\u0103 func\u021biile de transfer<\/h2>\n<ul>\n<li><strong>Analiz\u0103 modal\u0103:<\/strong> v\u00e2rfurile de amplitudine identific\u0103 frecven\u021bele naturale, inversarea de faz\u0103 confirm\u0103 c\u0103 fiecare dintre acestea reprezint\u0103 o rezonan\u021b\u0103 real\u0103, l\u0103\u021bimea v\u00e2rfului cuantific\u0103 amortizarea, iar combinarea m\u0103sur\u0103torilor efectuate \u00een mai multe puncte permite reconstituirea formelor modale.<\/li>\n<li><strong>Diagnosticul prin rezonan\u021b\u0103:<\/strong> Compararea frecven\u021bei de func\u021bionare cu frecven\u021bele proprii m\u0103surate permite stabilirea marjei de separare \u0219i identificarea rezonan\u021belor problematice, oferind astfel o orientare pentru orice strategie de modificare.<\/li>\n<li><strong>Proiectare pentru izolarea \u00eempotriva vibra\u021biilor:<\/strong> func\u021bia de transfer prezint\u0103 \u00een mod direct transmisia \u00een func\u021bie de frecven\u021b\u0103. Frecven\u021ba proprie a izolatorului apare sub forma unui v\u00e2rf, iar peste aproximativ 1,4\u00d7 aceast\u0103 frecven\u021b\u0103 r\u0103spunsul scade sub unitate, o izolare bun\u0103 fiind ob\u021binut\u0103 de regul\u0103 peste 2\u00d7.<\/li>\n<li><strong>Previziunea modific\u0103rilor structurale:<\/strong> Func\u021bia de m\u0103surare le permite inginerilor s\u0103 prevad\u0103 efectul ad\u0103ug\u0103rii de mas\u0103, rigiditate sau amortizare, apoi s\u0103 valideze modificarea printr-o compara\u021bie \u201e\u00eenainte \u0219i dup\u0103\u201d.<\/li>\n<\/ul>\n<h2>5. Interpretarea \u00een contextul utilajelor<\/h2>\n<h3>Sistemul rotor-rulment<\/h3>\n<p>Treating <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/unbalance\/\">dezechilibru<\/a> av\u00e2nd for\u021ba ca intrare \u0219i vibra\u021biile lag\u0103rului ca ie\u0219ire, func\u021bia de transfer arat\u0103 exact cum se transform\u0103 dezechilibrul \u00een vibra\u021bii m\u0103surabile. V\u00e2rfurile acesteia se situeaz\u0103 la nivelul ma\u0219inii <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/critical-speed\/\">viteze critice<\/a>, motiv pentru care acest concept este esen\u021bial pentru <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/rotor-dynamics\/\">dinamica rotorului<\/a> analiza \u0219i \u00een\u021belegerea motivului pentru care un rotor reac\u021bioneaz\u0103 violent la anumite viteze \u0219i calm la altele.<\/p>\n<h3>C\u0103ile de funda\u021bie \u0219i de transmisie<\/h3>\n<p>Av\u00e2nd ca intrare vibra\u021biile carcasei rulmentului \u0219i podeaua sau <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/foundation-stiffness\/\">funda\u0163ie<\/a> av\u00e2nd mi\u0219carea ca ie\u0219ire, func\u021bia de transfer descrie traseul de transmisie, eviden\u021biind frecven\u021bele la care energia p\u0103trunde cel mai u\u0219or \u00een structur\u0103 \u0219i oferind indicii pentru luarea deciziilor privind izolarea sau rigidizarea.<\/p>\n<h3>Unde se potrivesc instrumentele de teren<\/h3>\n<p>Aceast\u0103 abordare influen\u021beaz\u0103 activitatea de teren de zi cu zi, chiar \u0219i atunci c\u00e2nd nu se calculeaz\u0103 un FRF oficial. \u00cen <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/echilibrarea-campului\/\">echilibrarea la fa\u021ba locului<\/a>, un analizor portabil cu dou\u0103 canale, cum ar fi <a href=\"https:\/\/vibromera.eu\/ro\/produs\/balanset-1\/\">Balanset-1A<\/a> m\u0103soar\u0103 r\u0103spunsul de amplitudine \u0219i faz\u0103 la 1\u00d7 al rotorului la o mas\u0103 de prob\u0103 cunoscut\u0103 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/trial-weight\/\">greutate de prob\u0103<\/a> \u0219i realizeaz\u0103 efectiv o func\u021bie de transfer cu o singur\u0103 frecven\u021b\u0103 \u2014 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/influence-coefficient\/\">coeficientul de influen\u021b\u0103<\/a> \u2014 care indic\u0103 programului exact modul \u00een care rotorul reac\u021bioneaz\u0103 la masa din fiecare plan \u0219i, prin urmare, cum s\u0103 corecteze acest lucru.<\/p>\n<h3>Validarea calit\u0103\u021bii prin coeren\u021b\u0103<\/h3>\n<p>O func\u021bie de transfer este fiabil\u0103 numai dac\u0103 intrarea \u0219i ie\u0219irea sunt \u00eentr-adev\u0103r corelate, \u0219i <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/coherence\/\">coeren\u021b\u0103<\/a> este indicatorul care confirm\u0103 acest lucru. O coeren\u021b\u0103 de peste 0,9 indic\u0103 o func\u021bie fiabil\u0103; o coeren\u021b\u0103 sc\u0103zut\u0103 semnaleaz\u0103 o m\u0103sur\u0103toare eronat\u0103 sau zgomot necorelat \u2014 prin urmare, aceasta trebuie verificat\u0103 \u00eentotdeauna \u00eenainte de a se baza pe orice func\u021bie de transfer.<\/p>\n<p>Func\u021bia de transfer se num\u0103r\u0103 printre cele mai puternice instrumente analitice din domeniul dinamicii ma\u0219inilor, sintetiz\u00e2nd rela\u021bia fundamental\u0103 de intrare-ie\u0219ire a unei structuri \u00eentr-o singur\u0103 func\u021bie complex\u0103. St\u0103p\u00e2nirea m\u0103sur\u0103rii \u0219i interpret\u0103rii acesteia \u2014 \u00een special recunoa\u0219terea rezonan\u021belor pe baza valorilor maxime ale amplitudinii \u0219i a tranzi\u021biilor de faz\u0103 caracteristice \u2014 precum \u0219i a aplica\u021biilor sale deschide calea c\u0103tre analiza modal\u0103, diagnosticarea rezonan\u021belor, predic\u021bia modific\u0103rilor structurale \u0219i analiza transmisiei, care stau la baza controlului avansat al vibra\u021biilor.<\/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 func\u021bia de transfer (func\u021bia de r\u0103spuns \u00een frecven\u021b\u0103), raportul dintre ie\u0219ire \u0219i intrare, care arat\u0103 cum r\u0103spund sistemele la vibra\u021bii, esen\u021bial pentru analiza modal\u0103 \u0219i dinamica structural\u0103.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-278","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/278","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\/278\/revisions"}],"predecessor-version":[{"id":101317,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/278\/revisions\/101317"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/media?parent=278"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/categories?post=278"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/tags?post=278"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}