{"id":313,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/zoom-fft\/"},"modified":"2026-07-03T09:57:43","modified_gmt":"2026-07-03T09:57:43","slug":"zoom-fft","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/pt\/glossary\/zoom-fft\/","title":{"rendered":"O que \u00e9 Zoom FFT? An\u00e1lise Espectral de Alta Resolu\u00e7\u00e3o"},"content":{"rendered":"<h1>Compreender a FFT com Zoom<\/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\/pt\/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\/pt\/product\/balanset-1\/\" title=\"Equilibrador port\u00e1til e analisador de vibra\u00e7\u00f5es 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 completo de balanceador port\u00e1til e analisador de vibra\u00e7\u00f5es\" 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\/pt\/product-category\/devices\/\" rel=\"tag\">Dispositivos<\/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\/pt\/product\/balanset-1\/\" title=\"Equilibrador port\u00e1til e analisador de vibra\u00e7\u00f5es Balanset-1A\">Equilibrador port\u00e1til e analisador de vibra\u00e7\u00f5es 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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/wp-json\/wp\/v2\/glossary\/313?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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/wp-json\/wp\/v2\/glossary\/313?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=\"Adiciona ao carrinho: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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\/pt\/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\/pt\/product\/vibration-sensor\/\" title=\"Sensor de vibra\u00e7\u00e3o\">\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=\"Grande plano do sensor de vibra\u00e7\u00e3o 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\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/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\/pt\/product\/vibration-sensor\/\" title=\"Sensor de vibra\u00e7\u00e3o\">Sensor de vibra\u00e7\u00e3o<\/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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/wp-json\/wp\/v2\/glossary\/313?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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/wp-json\/wp\/v2\/glossary\/313?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=\"Adiciona ao carrinho: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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\/pt\/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\/pt\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Sensor \u00f3tico (tac\u00f3metro 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=\"Sensor \u00f3tico (tac\u00f3metro 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\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/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\/pt\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Sensor \u00f3tico (tac\u00f3metro laser)\">Sensor \u00f3tico (tac\u00f3metro 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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/wp-json\/wp\/v2\/glossary\/313?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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/wp-json\/wp\/v2\/glossary\/313?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=\"Adiciona ao carrinho: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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\/pt\/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\/pt\/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 balanceamento de rotor Vibromera: estojo de transporte, condicionador de sinal multicanal, analisador port\u00e1til, base magn\u00e9tica, sensores de vibra\u00e7\u00e3o e cabos espiralados.\" 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\/pt\/product-category\/devices\/\" rel=\"tag\">Dispositivos<\/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\/pt\/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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/wp-json\/wp\/v2\/glossary\/313?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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/wp-json\/wp\/v2\/glossary\/313?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=\"Adiciona ao carrinho: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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\/pt\/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\/pt\/product\/magnet-stand\/\" title=\"Suporte magn\u00e9tico 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=\"Base magn\u00e9tica.\" 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\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/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\/pt\/product\/magnet-stand\/\" title=\"Suporte magn\u00e9tico Insize-60-kgf\">Suporte magn\u00e9tico 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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/wp-json\/wp\/v2\/glossary\/313?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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/wp-json\/wp\/v2\/glossary\/313?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=\"Adiciona ao carrinho: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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\/pt\/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\/pt\/product\/reflective-tape\/\" title=\"Fita refletora\">\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=\"Fita refletora\" 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\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/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\/pt\/product\/reflective-tape\/\" title=\"Fita refletora\">Fita refletora<\/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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/wp-json\/wp\/v2\/glossary\/313?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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/wp-json\/wp\/v2\/glossary\/313?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=\"Adiciona ao carrinho: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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\/pt\/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\/pt\/product\/dynamic-balancer-balanset-1a\/\" title=\"Balanceador din\u00e2mico &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=\"Conte\u00fado do kit Balanset-1A com unidade de interface, sensores, tac\u00f3metro e acess\u00f3rios\" 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\/pt\/product-category\/devices\/\" rel=\"tag\">Dispositivos<\/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\/pt\/product\/dynamic-balancer-balanset-1a\/\" title=\"Balanceador din\u00e2mico &quot;Balanset-1A&quot; OEM\">Balanceador din\u00e2mico \"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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/wp-json\/wp\/v2\/glossary\/313?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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/wp-json\/wp\/v2\/glossary\/313?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=\"Adiciona ao carrinho: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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><strong>Zoom FFT<\/strong> - tamb\u00e9m designada por FFT de alta resolu\u00e7\u00e3o ou zoom de frequ\u00eancia - \u00e9 uma aplica\u00e7\u00e3o avan\u00e7ada da <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/fft\/\">Transformada r\u00e1pida de Fourier<\/a> que concentra uma resolu\u00e7\u00e3o de frequ\u00eancia muito fina numa banda estreita selecionada, em vez de a espalhar por toda a banda <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/spectrum\/\">espetro<\/a>. Em vez de analisar 0-1000 Hz com uma resolu\u00e7\u00e3o de 1 Hz (1000 linhas), uma FFT com zoom pode analisar 95-105 Hz com uma resolu\u00e7\u00e3o de 0,01 Hz - as mesmas 1000 linhas, mas todas elas numa janela de 10 Hz. Esta nitidez de cem vezes permite a um analista separar componentes com espa\u00e7amento estreito, tais como <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/sidebands\/\">faixas laterais<\/a>, determinar com precis\u00e3o a frequ\u00eancia exacta de um pico e estudar uma vizinhan\u00e7a espetral em pormenor forense.<\/p>\n<h2>1. Defini\u00e7\u00e3o: Resolu\u00e7\u00e3o onde \u00e9 importante<\/h2>\n<p>A FFT com zoom \u00e9 a ferramenta de elei\u00e7\u00e3o sempre que a informa\u00e7\u00e3o de diagn\u00f3stico se encontra em picos demasiado pr\u00f3ximos para serem separados por um espetro normal. Os principais casos s\u00e3o os motores <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/broken-rotor-bars\/\">barras do rotor quebradas<\/a> (resolvendo as pequenas bandas laterais de passagem dos polos \u2014 espa\u00e7adas ao n\u00famero de polos \u00d7 a <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/slip-frequency\/\">frequ\u00eancia de escorregamento<\/a> \u2014 em torno da velocidade de rota\u00e7\u00e3o 1\u00d7), <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/gear-defects\/\">problemas de engrenagem<\/a> (leitura do padr\u00e3o de modula\u00e7\u00e3o em torno da frequ\u00eancia da malha), e qualquer situa\u00e7\u00e3o em que dois picos importantes se fundissem num \u00fanico pico.<\/p>\n<h2>2. Porque \u00e9 que a FFT com zoom \u00e9 necess\u00e1ria<\/h2>\n<h3>O limite de resolu\u00e7\u00e3o de uma FFT padr\u00e3o<\/h3>\n<p>Cada FFT comum obedece a uma rela\u00e7\u00e3o inevit\u00e1vel:<\/p>\n<blockquote><p>Resolu\u00e7\u00e3o = F<sub>m\u00e1ximo<\/sub> \u00f7 N\u00famero de linhas.<\/p><\/blockquote>\n<p>Por exemplo, uma gama de 0\u20131000 Hz com 800 linhas d\u00e1 uma resolu\u00e7\u00e3o de 1.25 Hz \u2014 e dois picos mais pr\u00f3ximos do que 1.25 Hz simplesmente n\u00e3o podem ser distinguidos. Este \u00e9 um problema real para falhas el\u00e9tricas, onde as bandas laterais de passagem dos polos de interesse est\u00e3o muitas vezes apenas a alguns hertz \u2014 por vezes mal 1\u20132 Hz \u2014 do pico central.<\/p>\n<h3>As vantagens e desvantagens da for\u00e7a bruta<\/h3>\n<ul>\n<li><strong>Reduzir F<sub>m\u00e1ximo<\/sub>:<\/strong> baixar para 0-100 Hz melhora a resolu\u00e7\u00e3o para 0,125 Hz, mas deita fora todo o conte\u00fado de frequ\u00eancia mais elevada.<\/li>\n<li><strong>Aumentar o n\u00famero de linhas:<\/strong> 8000 linhas tamb\u00e9m atingem 0,125 Hz, mas consomem muito tempo de processamento e mem\u00f3ria.<\/li>\n<li><strong>Zoom FFT:<\/strong> fornece a resolu\u00e7\u00e3o fina exatamente onde \u00e9 desejada, mantendo a computa\u00e7\u00e3o razo\u00e1vel - o melhor de ambos.<\/li>\n<\/ul>\n<p>Pode pr\u00e9-visualizar estas compensa\u00e7\u00f5es antes de efetuar medi\u00e7\u00f5es com a ferramenta gratuita <a href=\"https:\/\/vibromera.eu\/pt\/calculators\/fft-resolution-calculator\/\">Calculadora de resolu\u00e7\u00e3o FFT<\/a>, que relaciona diretamente a extens\u00e3o, o n\u00famero de linhas e a resolu\u00e7\u00e3o.<\/p>\n<h2>3. Como funciona o Zoom FFT<\/h2>\n<p>A t\u00e9cnica \u00e9 uma \u201clupa\u201d digital constru\u00edda a partir de tr\u00eas etapas de processamento de sinais:<\/p>\n<ol>\n<li><strong>Selecionar a banda:<\/strong> escolher uma frequ\u00eancia central e uma largura de banda, por exemplo, 100 Hz \u00b1 10 Hz.<\/li>\n<li><strong>Desloca\u00e7\u00e3o de frequ\u00eancia:<\/strong> traduzir digitalmente essa banda em dire\u00e7\u00e3o a DC (banda base), para que a regi\u00e3o de interesse se situe onde a resolu\u00e7\u00e3o da FFT \u00e9 naturalmente mais densa.<\/li>\n<li><strong>Dizima\u00e7\u00e3o:<\/strong> reduzem a taxa de amostragem proporcionalmente \u00e0 largura de banda reduzida.<\/li>\n<li><strong>C\u00e1lculo da FFT:<\/strong> executar a transforma\u00e7\u00e3o no sinal de taxa reduzida.<\/li>\n<li><strong>Resultado:<\/strong> um espetro de alta resolu\u00e7\u00e3o que abrange apenas a banda estreita selecionada.<\/li>\n<\/ol>\n<p>A compensa\u00e7\u00e3o \u00e9 diretamente proporcional \u00e0 dist\u00e2ncia do zoom: o zoom para um d\u00e9cimo da amplitude total produz uma resolu\u00e7\u00e3o dez vezes mais fina, pelo que o ganho de resolu\u00e7\u00e3o \u00e9 simplesmente (Amplitude total \u00f7 Amplitude do zoom). Passar de 0-1000 Hz a 1 Hz para uma janela de 95-105 Hz a 0,01 Hz \u00e9 um ganho de cem vezes.<\/p>\n<h2>4. Aplica\u00e7\u00f5es<\/h2>\n<h3>Dete\u00e7\u00e3o de defeitos na barra do rotor do motor<\/h3>\n<p>O trabalho cl\u00e1ssico de zoom FFT. As bandas laterais de passagem de polos (n\u00famero de polos \u00d7 frequ\u00eancia de escorregamento), espa\u00e7adas apenas alguns hertz do pico 1\u00d7, est\u00e3o demasiado pr\u00f3ximas para serem resolvidas num espectro padr\u00e3o, por isso \u00e9 necess\u00e1rio um zoom em torno de 1\u00d7 <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/running-speed\/\">velocidade de funcionamento<\/a> a 0,1 Hz ou melhor, separa-os claramente e exp\u00f5e <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/broken-rotor-bars\/\">barras do rotor quebradas<\/a>. A amplitude da banda lateral em rela\u00e7\u00e3o ao pico 1\u00d7 indica quantas barras foram quebradas.<\/p>\n<h3>Diagn\u00f3stico de engrenagens<\/h3>\n<p>Zoom \u00e0 volta do <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/gear-mesh-frequency\/\">frequ\u00eancia de engrenamento<\/a> para resolver as bandas laterais espa\u00e7adas \u00e0 velocidade do veio, identificar <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/hunting-tooth-frequency\/\">hunting-tooth-frequency<\/a> padr\u00f5es, e distinguir as bandas laterais do pinh\u00e3o das bandas laterais da engrenagem. A ferramenta gratuita <a href=\"https:\/\/vibromera.eu\/pt\/calculators\/gear-mesh-frequency\/\">Calculadora da frequ\u00eancia de engrenamento<\/a> diz-lhe onde deve centrar o zoom em primeiro lugar.<\/p>\n<h3>An\u00e1lise de rolamentos<\/h3>\n<p>Zoom \u00e0 volta do <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/bearing-fault-frequencies\/\">frequ\u00eancias de falhas em rolamentos<\/a> para resolver a sua estrutura de banda lateral, confirmar a frequ\u00eancia exacta da falha em rela\u00e7\u00e3o ao valor calculado e ler o padr\u00e3o de modula\u00e7\u00e3o que <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/envelope-analysis\/\">an\u00e1lise de envelope<\/a> que de outra forma transportaria.<\/p>\n<h3>An\u00e1lise da frequ\u00eancia el\u00e9trica<\/h3>\n<p>Fa\u00e7a zoom em torno da frequ\u00eancia da linha ou de 2\u00d7 a frequ\u00eancia da linha para resolver as bandas laterais espa\u00e7adas \u00e0 <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/pole-pass-frequency\/\">frequ\u00eancia de passagem polar<\/a> na vibra\u00e7\u00e3o relacionada com a corrente e medir esse espa\u00e7amento com precis\u00e3o.<\/p>\n<h3>Estudos de velocidade cr\u00edtica<\/h3>\n<p>Zoom em torno de uma suspeita <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/natural-frequency\/\">frequ\u00eancia natural<\/a> para corrigir o <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/resonance\/\">resson\u00e2ncia<\/a> com precis\u00e3o e para medir a largura do pico de resson\u00e2ncia, a partir do qual o <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/damping\/\">amortecimento<\/a> pode ser estimado.<\/p>\n<h2>5. Procedimento operacional<\/h2>\n<h3>Configura\u00e7\u00e3o<\/h3>\n<ol>\n<li><strong>Executar primeiro uma FFT padr\u00e3o<\/strong> para encontrar a regi\u00e3o de interesse - o zoom nunca \u00e9 um primeiro passo cego.<\/li>\n<li><strong>Selecionar o centro<\/strong> frequ\u00eancia para o zoom.<\/li>\n<li><strong>Selecionar o intervalo<\/strong> - mais estreito significa maior resolu\u00e7\u00e3o.<\/li>\n<li><strong>Definir a contagem de linhas<\/strong> (normalmente o mesmo que a FFT padr\u00e3o).<\/li>\n<li><strong>Adquirir<\/strong> e deixar que o instrumento calcule o zoom.<\/li>\n<\/ol>\n<h3>Defini\u00e7\u00f5es t\u00edpicas<\/h3>\n<ul>\n<li><strong>Bandas laterais do motor:<\/strong> centro a 1\u00d7 (30 Hz), amplitude \u00b110 Hz, 800 linhas \u2192 resolu\u00e7\u00e3o de 0,025 Hz.<\/li>\n<li><strong>Malha de engrenagens:<\/strong> centro no GMF (600 Hz), amplitude \u00b150 Hz, 1600 linhas \u2192 resolu\u00e7\u00e3o de 0,0625 Hz.<\/li>\n<li><strong>Defeito da chumaceira:<\/strong> centro em <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/bpfo\/\">BPFO<\/a> (150 Hz), amplitude \u00b125 Hz, 800 linhas \u2192 resolu\u00e7\u00e3o de 0,0625 Hz.<\/li>\n<\/ul>\n<h2>6. Vantagens<\/h2>\n<ul>\n<li><strong>Alta resolu\u00e7\u00e3o:<\/strong> 10-100\u00d7 mais fina do que uma FFT padr\u00e3o, separando picos que de outra forma seriam imposs\u00edveis de distinguir e revelando detalhes de diagn\u00f3stico.<\/li>\n<li><strong>Efici\u00eancia computacional:<\/strong> muito mais barato do que aumentar o n\u00famero de linhas em todo o espetro - mais r\u00e1pido, com uma menor ocupa\u00e7\u00e3o de mem\u00f3ria.<\/li>\n<li><strong>Medi\u00e7\u00e3o precisa da frequ\u00eancia:<\/strong> fixa a frequ\u00eancia exata do pico para que possa ser comparada com um c\u00e1lculo te\u00f3rico, confirmando ou refutando uma suspeita <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/diagnosis\/\">diagn\u00f3stico<\/a>.<\/li>\n<\/ul>\n<h2>7. Limita\u00e7\u00f5es<\/h2>\n<ul>\n<li><strong>Apenas banda estreita:<\/strong> mostra apenas a regi\u00e3o selecionada e n\u00e3o v\u00ea tudo o que est\u00e1 fora dela, pelo que \u00e9 necess\u00e1rio saber mais ou menos para onde olhar - da\u00ed a vis\u00e3o geral da FFT padr\u00e3o primeiro.<\/li>\n<li><strong>Conhecimento do utilizador necess\u00e1rio:<\/strong> a escolha de um centro e de uma amplitude sensatos exige que se compreenda o que se est\u00e1 a procurar, o que torna a FFT com zoom inadequada para o rastreio geral e mais exigente do que uma FFT simples.<\/li>\n<li><strong>Investimento de tempo:<\/strong> trata-se de uma medi\u00e7\u00e3o suplementar em rela\u00e7\u00e3o \u00e0 medi\u00e7\u00e3o normal, com um esfor\u00e7o de configura\u00e7\u00e3o e de sele\u00e7\u00e3o de par\u00e2metros que se justifica para as m\u00e1quinas cr\u00edticas ou para os problemas j\u00e1 confirmados, e n\u00e3o para os levantamentos de rotina.<\/li>\n<\/ul>\n<h2>8. Zoom FFT no campo<\/h2>\n<p>Embora o trabalho de zoom mais profundo seja frequentemente reservado para m\u00e1quinas cr\u00edticas permanentemente instrumentadas, o mesmo princ\u00edpio \u00e9 inestim\u00e1vel em diagn\u00f3sticos port\u00e1teis. Ap\u00f3s uma inspe\u00e7\u00e3o de rotina <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/equilibrio-de-campos\/\">equilibragem no campo<\/a> um analisador de dois canais, como o <a href=\"https:\/\/vibromera.eu\/pt\/produto\/balanset-1\/\">Balanset-1A<\/a> permite que um engenheiro expanda uma regi\u00e3o suspeita do espetro - cerca de 1\u00d7 a velocidade de funcionamento, por exemplo - para confirmar se um pico elevado \u00e9 puro <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/imbalance\/\">desequil\u00edbrio<\/a> ou um conjunto de bandas laterais el\u00e9tricas escondidas por baixo. Essa distin\u00e7\u00e3o decide se a solu\u00e7\u00e3o \u00e9 uma corre\u00e7\u00e3o de balanceamento ou uma repara\u00e7\u00e3o do motor, raz\u00e3o pela qual \u00e9 t\u00e3o \u00fatil poder resolver picos muito pr\u00f3ximos no local.<\/p>\n<p>Em suma, a FFT com zoom \u00e9 uma ferramenta espetral poderosa que fornece a resolu\u00e7\u00e3o necess\u00e1ria para separar os componentes fortemente agrupados por detr\u00e1s das falhas el\u00e9tricas do motor, defeitos nas engrenagens e problemas nos rolamentos. Saber quando utiliz\u00e1-la, como escolher o centro e a amplitude, e como ler o espetro de alta resolu\u00e7\u00e3o resultante \u00e9 uma carater\u00edstica distintiva de diagn\u00f3sticos avan\u00e7ados <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/vibration-analysis\/\">an\u00e1lise de vibra\u00e7\u00e3o<\/a> e diagn\u00f3stico pormenorizado de avarias em m\u00e1quinas complexas.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/\">\u2190 Voltar ao \u00edndice principal<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Aprenda sobre a FFT com zoom, uma t\u00e9cnica de an\u00e1lise espectral que oferece alta resolu\u00e7\u00e3o de frequ\u00eancia em bandas estreitas selecionadas, essencial para a resolu\u00e7\u00e3o de picos pr\u00f3ximos e para a an\u00e1lise de bandas laterais.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-313","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/313","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/313\/revisions"}],"predecessor-version":[{"id":102165,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/313\/revisions\/102165"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/media?parent=313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/categories?post=313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/tags?post=313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}