{"id":313,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/zoom-fft\/"},"modified":"2026-05-23T22:46:55","modified_gmt":"2026-05-23T22:46:55","slug":"zoom-fft","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/pt_br\/glossary\/zoom-fft\/","title":{"rendered":"O que \u00e9 Zoom FFT? An\u00e1lise Espectral de Alta Resolu\u00e7\u00e3o"},"content":{"rendered":"<h1>Entendendo 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_br\/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_br\/product\/balanset-1\/\" title=\"Balanceador port\u00e1til e analisador de vibra\u00e7\u00e3o 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\u00e3o\" 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_br\/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_br\/product\/balanset-1\/\" title=\"Balanceador port\u00e1til e analisador de vibra\u00e7\u00e3o Balanset-1A\">Balanceador port\u00e1til e analisador de vibra\u00e7\u00e3o 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_br\/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 ao carrinho\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar ao carrinho\" 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_br\/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=\"Adicione 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 ao carrinho<\/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_br\/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_br\/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=\"Close-up 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_br\/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_br\/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_br\/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 ao carrinho\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar ao carrinho\" 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_br\/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=\"Adicione 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 ao carrinho<\/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_br\/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_br\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Sensor \u00f3ptico (tac\u00f4metro a 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 \u00f3ptico (tac\u00f4metro a 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_br\/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_br\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Sensor \u00f3ptico (tac\u00f4metro a laser)\">Sensor \u00f3ptico (tac\u00f4metro a 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_br\/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 ao carrinho\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar ao carrinho\" 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_br\/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=\"Adicione 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 ao carrinho<\/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_br\/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_br\/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_br\/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_br\/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_br\/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 ao carrinho\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar ao carrinho\" 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_br\/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=\"Adicione 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 ao carrinho<\/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_br\/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_br\/product\/magnet-stand\/\" title=\"Tamanho do suporte magn\u00e9tico - 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_br\/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_br\/product\/magnet-stand\/\" title=\"Tamanho do suporte magn\u00e9tico - 60 kgf\">Tamanho do suporte magn\u00e9tico - 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_br\/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 ao carrinho\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar ao carrinho\" 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_br\/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=\"Adicione 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 ao carrinho<\/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_br\/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_br\/product\/reflective-tape\/\" title=\"Fita refletiva\">\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 refletiva\" 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_br\/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_br\/product\/reflective-tape\/\" title=\"Fita refletiva\">Fita refletiva<\/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_br\/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 ao carrinho\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar ao carrinho\" 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_br\/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=\"Adicione 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 ao carrinho<\/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_br\/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_br\/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\u00f4metro 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_br\/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_br\/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_br\/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 ao carrinho\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar ao carrinho\" 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_br\/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=\"Adicione 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 ao carrinho<\/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>Ampliar FFT<\/strong> \u2014 tamb\u00e9m conhecida como FFT de alta resolu\u00e7\u00e3o ou zoom de frequ\u00eancia \u2014 \u00e9 uma aplica\u00e7\u00e3o avan\u00e7ada da <a href=\"https:\/\/vibromera.eu\/pt_br\/glossary\/fft\/\">Transformada r\u00e1pida de Fourier<\/a> que concentra uma resolu\u00e7\u00e3o de frequ\u00eancia muito precisa dentro de uma banda estreita selecionada, em vez de distribu\u00ed-la de forma dispersa por toda a <a href=\"https:\/\/vibromera.eu\/pt_br\/glossary\/spectrum\/\">espectro<\/a>. Em vez de analisar a faixa de 0 a 1000 Hz com resolu\u00e7\u00e3o de 1 Hz (1000 linhas), uma FFT com zoom pode analisar a faixa de 95 a 105 Hz com resolu\u00e7\u00e3o de 0,01 Hz \u2014 as mesmas 1000 linhas, mas todas concentradas em uma janela de 10 Hz. Esse aumento de 100 vezes na resolu\u00e7\u00e3o permite que um analista separe componentes muito pr\u00f3ximos uns dos outros, tais como <a href=\"https:\/\/vibromera.eu\/pt_br\/glossary\/sidebands\/\">faixas laterais<\/a>, identificar uma frequ\u00eancia de pico exata e estudar uma regi\u00e3o do espectro com detalhes minuciosos.<\/p>\n<h2>1. Defini\u00e7\u00e3o: Resolu\u00e7\u00e3o onde realmente importa<\/h2>\n<p>O Zoom FFT \u00e9 a ferramenta ideal sempre que as informa\u00e7\u00f5es de diagn\u00f3stico est\u00e3o contidas em picos muito pr\u00f3ximos uns dos outros para que um espectro normal consiga separ\u00e1-los. Os principais casos s\u00e3o os motores <a href=\"https:\/\/vibromera.eu\/pt_br\/glossary\/broken-rotor-bars\/\">barras do rotor quebradas<\/a> (resolvendo o pequeno <a href=\"https:\/\/vibromera.eu\/pt_br\/glossary\/slip-frequency\/\">frequ\u00eancia de deslizamento<\/a> bandas laterais em torno de 1\u00d7 a velocidade de corrida), <a href=\"https:\/\/vibromera.eu\/pt_br\/glossary\/gear-defects\/\">problemas de engrenagem<\/a> (analisando o padr\u00e3o de modula\u00e7\u00e3o em torno da frequ\u00eancia de malha) e em qualquer situa\u00e7\u00e3o em que dois picos importantes, de outra forma, se fundiriam em um \u00fanico picos difuso.<\/p>\n<h2>2. Por 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>Toda FFT comum obedece a uma rela\u00e7\u00e3o inelud\u00edvel:<\/p>\n<blockquote><p>Resolu\u00e7\u00e3o = F<sub>m\u00e1ximo<\/sub> \u00f7 N\u00famero de linhas.<\/p><\/blockquote>\n<p>Por exemplo, uma faixa de 0 a 1.000 Hz com 800 linhas resulta em 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 diferenciados. Isso representa um problema real no caso de falhas el\u00e9tricas, em que as bandas laterais de frequ\u00eancia de deslizamento de interesse costumam estar a apenas 0,5\u20132 Hz de dist\u00e2ncia do pico central.<\/p>\n<h3>As vantagens e desvantagens do m\u00e9todo de for\u00e7a bruta<\/h3>\n<ul>\n<li><strong>Reduzir F<sub>m\u00e1ximo<\/sub>:<\/strong> Reduzir a faixa para 0\u2013100 Hz melhora a resolu\u00e7\u00e3o para 0,125 Hz, mas elimina todo o conte\u00fado de frequ\u00eancias mais altas.<\/li>\n<li><strong>Aumente o n\u00famero de linhas:<\/strong> 8.000 linhas tamb\u00e9m atingem 0,125 Hz, mas exigem muito tempo de processamento e mem\u00f3ria.<\/li>\n<li><strong>Ampliar FFT:<\/strong> oferece alta resolu\u00e7\u00e3o exatamente onde \u00e9 necess\u00e1rio, mantendo o consumo de recursos computacionais dentro de limites razo\u00e1veis \u2014 o melhor dos dois mundos.<\/li>\n<\/ul>\n<p>Voc\u00ea pode ter uma ideia dessas vantagens e desvantagens antes de fazer a medi\u00e7\u00e3o com o aplicativo gratuito <a href=\"https:\/\/vibromera.eu\/pt_br\/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 consiste em uma \u201clente de aumento\u201d digital composta por tr\u00eas etapas de processamento de sinal:<\/p>\n<ol>\n<li><strong>Selecione a banda:<\/strong> escolha uma frequ\u00eancia central e uma largura de banda, por exemplo, 100 Hz \u00b1 10 Hz.<\/li>\n<li><strong>Desvio de frequ\u00eancia:<\/strong> traduzir digitalmente essa faixa para o dom\u00ednio DC (banda base), de modo que a regi\u00e3o de interesse fique onde a resolu\u00e7\u00e3o da FFT \u00e9 naturalmente mais densa.<\/li>\n<li><strong>Dizima\u00e7\u00e3o:<\/strong> reduzir a taxa de amostragem proporcionalmente \u00e0 largura de banda reduzida.<\/li>\n<li><strong>C\u00e1lculo da FFT:<\/strong> aplique a transforma\u00e7\u00e3o ao sinal com taxa reduzida.<\/li>\n<li><strong>Resultado:<\/strong> um espectro de alta resolu\u00e7\u00e3o que abrange apenas a banda estreita selecionada.<\/li>\n<\/ol>\n<p>O ganho varia diretamente com o n\u00edvel de zoom: ampliar para um d\u00e9cimo da amplitude total resulta em uma resolu\u00e7\u00e3o dez vezes maior; portanto, o ganho de resolu\u00e7\u00e3o \u00e9 simplesmente (Amplitude Total \u00f7 Amplitude do Zoom). Passar de 0\u20131000 Hz com passo de 1 Hz para uma janela de 95\u2013105 Hz com passo de 0,01 Hz representa um ganho de cem vezes.<\/p>\n<h2>4. Aplica\u00e7\u00f5es<\/h2>\n<h3>Detec\u00e7\u00e3o de defeitos nas barras do rotor de motores<\/h3>\n<p>A cl\u00e1ssica an\u00e1lise FFT com zoom. As bandas laterais de frequ\u00eancia deslocada, separadas por intervalos de 0,5 a 2 Hz, est\u00e3o muito pr\u00f3ximas para serem distinguidas em um espectro padr\u00e3o; por isso, \u00e9 necess\u00e1rio um zoom de cerca de 1\u00d7 <a href=\"https:\/\/vibromera.eu\/pt_br\/glossary\/running-speed\/\">velocidade de corrida<\/a> a 0,1 Hz ou mais separa-os claramente e revela <a href=\"https:\/\/vibromera.eu\/pt_br\/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 est\u00e3o quebradas.<\/p>\n<h3>Diagn\u00f3stico de engrenagens<\/h3>\n<p>Zoom ao redor do <a href=\"https:\/\/vibromera.eu\/pt_br\/glossary\/gear-mesh-frequency\/\">frequ\u00eancia de engrenamento<\/a> para resolver as bandas laterais espa\u00e7adas pela velocidade do eixo, identificar <a href=\"https:\/\/vibromera.eu\/pt_br\/glossary\/hunting-tooth-frequency\/\">frequ\u00eancia de ca\u00e7a<\/a> padr\u00f5es e distinguir as bandas laterais do pinh\u00e3o das bandas laterais da engrenagem. O livre <a href=\"https:\/\/vibromera.eu\/pt_br\/calculators\/gear-mesh-frequency\/\">Calculadora da frequ\u00eancia de engrenagem<\/a> indica onde voc\u00ea deve centrar o zoom inicialmente.<\/p>\n<h3>An\u00e1lise de rolamentos<\/h3>\n<p>Zoom ao redor do <a href=\"https:\/\/vibromera.eu\/pt_br\/glossary\/bearing-fault-frequencies\/\">frequ\u00eancias de falhas de rolamentos<\/a> para determinar a estrutura da banda lateral, confirmar a frequ\u00eancia exata 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_br\/glossary\/envelope-analysis\/\">an\u00e1lise de envelope<\/a> que, de outra forma, teria de carregar.<\/p>\n<h3>An\u00e1lise de frequ\u00eancia el\u00e9trica<\/h3>\n<p>Amplie a frequ\u00eancia da linha ou o dobro da frequ\u00eancia da linha para identificar as bandas laterais de frequ\u00eancia de deslizamento na vibra\u00e7\u00e3o relacionada \u00e0 corrente e localizar o <a href=\"https:\/\/vibromera.eu\/pt_br\/glossary\/pole-pass-frequency\/\">frequ\u00eancia de passagem pelo polo<\/a> precisamente.<\/p>\n<h3>Estudos sobre a velocidade cr\u00edtica<\/h3>\n<p>Amplie a imagem em torno de uma \u00e1rea suspeita <a href=\"https:\/\/vibromera.eu\/pt_br\/glossary\/natural-frequency\/\">frequ\u00eancia natural<\/a> para corrigir o <a href=\"https:\/\/vibromera.eu\/pt_br\/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_br\/glossary\/damping\/\">amortecimento<\/a> pode ser estimado.<\/p>\n<h2>5. Procedimento operacional<\/h2>\n<h3>Configurar<\/h3>\n<ol>\n<li><strong>Primeiro, execute uma FFT padr\u00e3o<\/strong> para localizar a \u00e1rea de interesse \u2014 o zoom nunca deve ser o primeiro passo.<\/li>\n<li><strong>Selecione o centro<\/strong> frequ\u00eancia do zoom.<\/li>\n<li><strong>Selecione o intervalo<\/strong> \u2014 quanto mais estreita, maior a resolu\u00e7\u00e3o.<\/li>\n<li><strong>Definir o n\u00famero de linhas<\/strong> (normalmente igual \u00e0 FFT padr\u00e3o).<\/li>\n<li><strong>Adquirir<\/strong> e deixe que o instrumento calcule o zoom.<\/li>\n<\/ol>\n<h3>Configura\u00e7\u00f5es t\u00edpicas<\/h3>\n<ul>\n<li><strong>Bandas laterais do motor:<\/strong> centro em 1\u00d7 (30 Hz), amplitude de \u00b110 Hz, 800 linhas \u2192 resolu\u00e7\u00e3o de 0,025 Hz.<\/li>\n<li><strong>Malha de engrenagem:<\/strong> centrado na GMF (600 Hz), amplitude de \u00b150 Hz, 1600 linhas \u2192 resolu\u00e7\u00e3o de 0,0625 Hz.<\/li>\n<li><strong>Falha no rolamento:<\/strong> centro em <a href=\"https:\/\/vibromera.eu\/pt_br\/glossary\/bpfo\/\">BPFO<\/a> (150 Hz), intervalo de \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 a 100 vezes mais preciso do que uma FFT padr\u00e3o, separando picos que, de outra forma, seriam imposs\u00edveis de distinguir e revelando detalhes diagn\u00f3sticos.<\/li>\n<li><strong>Efici\u00eancia computacional:<\/strong> muito mais barato do que aumentar o n\u00famero de linhas em todo o espectro \u2014 mais r\u00e1pido e com menor consumo de mem\u00f3ria.<\/li>\n<li><strong>Medi\u00e7\u00e3o precisa de frequ\u00eancia:<\/strong> identifica a frequ\u00eancia de pico exata para que possa ser comparada com um c\u00e1lculo te\u00f3rico, confirmando ou refutando uma suspeita <a href=\"https:\/\/vibromera.eu\/pt_br\/glossary\/diagnosis\/\">diagn\u00f3stico<\/a>.<\/li>\n<\/ul>\n<h2>7. Limita\u00e7\u00f5es<\/h2>\n<ul>\n<li><strong>Apenas banda estreita:<\/strong> ele mostra apenas a regi\u00e3o selecionada e ignora tudo o que est\u00e1 fora dela; portanto, voc\u00ea j\u00e1 deve ter uma ideia de onde procurar \u2014 da\u00ed a necessidade de come\u00e7ar com uma vis\u00e3o geral da FFT padr\u00e3o.<\/li>\n<li><strong>Conhecimentos necess\u00e1rios do usu\u00e1rio:<\/strong> A escolha de um ponto central e um intervalo adequados exige que se saiba exatamente o que se est\u00e1 procurando, o que torna a FFT com zoom inadequada para an\u00e1lises gerais e mais complexa do que uma FFT comum.<\/li>\n<li><strong>Tempo necess\u00e1rio:<\/strong> trata-se de uma medi\u00e7\u00e3o adicional \u00e0 padr\u00e3o, cujo esfor\u00e7o de configura\u00e7\u00e3o e sele\u00e7\u00e3o de par\u00e2metros se justifica para m\u00e1quinas cr\u00edticas ou problemas j\u00e1 confirmados, e n\u00e3o para inspe\u00e7\u00f5es de rotina.<\/li>\n<\/ul>\n<h2>8. Ampliar a FFT em campo<\/h2>\n<p>Embora o trabalho de zoom mais detalhado seja frequentemente reservado para m\u00e1quinas cr\u00edticas equipadas com instrumentos permanentes, o mesmo princ\u00edpio \u00e9 de grande valor nos diagn\u00f3sticos port\u00e1teis. Ap\u00f3s uma rotina <a href=\"https:\/\/vibromera.eu\/pt_br\/glossary\/balanceamento-de-campo\/\">balanceamento de campo<\/a> pesquisa, um analisador de dois canais, como o <a href=\"https:\/\/vibromera.eu\/pt_br\/produto\/balanset-1\/\">Conjunto de equil\u00edbrio-1a<\/a> permite que um engenheiro amplie uma regi\u00e3o suspeita do espectro \u2014 por exemplo, em torno de 1\u00d7 a velocidade de execu\u00e7\u00e3o \u2014 para confirmar se um pico elevado \u00e9 puro <a href=\"https:\/\/vibromera.eu\/pt_br\/glossary\/imbalance\/\">desequil\u00edbrio<\/a> ou um conjunto de bandas laterais el\u00e9tricas ocultas por baixo dele. Essa distin\u00e7\u00e3o determina se a solu\u00e7\u00e3o \u00e9 uma corre\u00e7\u00e3o de equil\u00edbrio ou um reparo no motor, e \u00e9 por isso que a capacidade de distinguir picos pr\u00f3ximos uns dos outros no local \u00e9 t\u00e3o \u00fatil.<\/p>\n<p>Em resumo, o zoom FFT \u00e9 uma poderosa ferramenta espectral que oferece a resolu\u00e7\u00e3o necess\u00e1ria para distinguir os componentes muito pr\u00f3ximos uns dos outros, respons\u00e1veis por falhas el\u00e9tricas no motor, defeitos nas engrenagens e problemas nos rolamentos. Saber quando utiliz\u00e1-la, como escolher o ponto central e o intervalo, e como interpretar o espectro de alta resolu\u00e7\u00e3o resultante \u00e9 uma caracter\u00edstica marcante do n\u00edvel avan\u00e7ado <a href=\"https:\/\/vibromera.eu\/pt_br\/glossary\/vibration-analysis\/\">an\u00e1lise de vibra\u00e7\u00e3o<\/a> e diagn\u00f3stico detalhado de falhas em m\u00e1quinas complexas.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/pt_br\/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_br\/wp-json\/wp\/v2\/glossary\/313","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/pt_br\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/pt_br\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/pt_br\/wp-json\/wp\/v2\/glossary\/313\/revisions"}],"predecessor-version":[{"id":101371,"href":"https:\/\/vibromera.eu\/pt_br\/wp-json\/wp\/v2\/glossary\/313\/revisions\/101371"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/pt_br\/wp-json\/wp\/v2\/media?parent=313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/pt_br\/wp-json\/wp\/v2\/categories?post=313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/pt_br\/wp-json\/wp\/v2\/tags?post=313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}