{"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\/sv\/glossary\/zoom-fft\/","title":{"rendered":"Vad \u00e4r Zoom FFT? H\u00f6guppl\u00f6st spektralanalys"},"content":{"rendered":"<h1>F\u00f6rst\u00e5 Zoom FFT<\/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\/sv\/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\/sv\/product\/balanset-1\/\" title=\"Portabel balanserare &amp; vibrationsanalysator 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 komplett kit med portabel balanserare och vibrationsanalysator\" 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\/sv\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/sv\/product\/balanset-1\/\" title=\"Portabel balanserare &amp; vibrationsanalysator Balanset-1A\">Portabel balanserare &amp; vibrationsanalysator 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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Portable balancer &amp; Vibration analyzer Balanset-1A&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/vibration-sensor\/\" title=\"Vibrationssensor\">\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=\"Balanset-1A vibrationssensor - n\u00e4rbild\" 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\/sv\/product-category\/parts\/\" rel=\"tag\">Delar<\/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\/sv\/product\/vibration-sensor\/\" title=\"Vibrationssensor\">Vibrationssensor<\/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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Vibration sensor&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (lasertakometer)\">\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=\"Optisk sensor (lasertakometer)\" 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\/sv\/product-category\/parts\/\" rel=\"tag\">Delar<\/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\/sv\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (lasertakometer)\">Optisk sensor (lasertakometer)<\/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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Optical Sensor (Laser Tachometer)&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/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=\"Vibromera rotorbalanseringssats: b\u00e4rv\u00e4ska, flerkanalig signalkonditionerare, handh\u00e5llen analysator, magnetisk bas, vibrationssensorer och spiralformade kablar.\" 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\/sv\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/sv\/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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Balanset-4&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/magnet-stand\/\" title=\"Magnetiskt stativ 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=\"Magnetf\u00e4ste.\" 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\/sv\/product-category\/parts\/\" rel=\"tag\">Delar<\/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\/sv\/product\/magnet-stand\/\" title=\"Magnetiskt stativ Insize-60-kgf\">Magnetiskt stativ 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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Magnetic Stand Insize-60-kgf&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/reflective-tape\/\" title=\"Reflekterande tejp\">\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=\"Reflekterande tejp\" 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\/sv\/product-category\/parts\/\" rel=\"tag\">Delar<\/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\/sv\/product\/reflective-tape\/\" title=\"Reflekterande tejp\">Reflekterande tejp<\/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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Reflective tape&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamisk balanserare &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=\"Balanset-1A-kit, inneh\u00e5ll med gr\u00e4nssnittsenhet, givare, varvr\u00e4knare och tillbeh\u00f6r\" 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\/sv\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/sv\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamisk balanserare &quot;Balanset-1A&quot; OEM\">Dynamisk balanserare \"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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Dynamic balancer \u201cBalanset-1A\u201d OEM&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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> \u2014 \u00e4ven kallat h\u00f6guppl\u00f6st FFT eller frekvenszoom \u2014 \u00e4r en avancerad till\u00e4mpning av <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/fft\/\">Snabb Fouriertransform<\/a> som koncentrerar den mycket fina frekvensuppl\u00f6sningen till ett valt smalt band ist\u00e4llet f\u00f6r att sprida ut den tunt \u00f6ver hela <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/spectrum\/\">spektrum<\/a>. I st\u00e4llet f\u00f6r att analysera frekvensomr\u00e5det 0\u20131000 Hz med en uppl\u00f6sning p\u00e5 1 Hz (1000 linjer) kan en zoom-FFT analysera frekvensomr\u00e5det 95\u2013105 Hz med en uppl\u00f6sning p\u00e5 0,01 Hz \u2013 samma 1000 linjer, men alla samlade i ett 10 Hz-f\u00f6nster. Denna hundrafaldiga sk\u00e4rpning g\u00f6r det m\u00f6jligt f\u00f6r en analytiker att urskilja komponenter som ligger t\u00e4tt ihop, s\u00e5som <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/sidebands\/\">sidband<\/a>, fastst\u00e4lla en exakt toppfrekvens och unders\u00f6ka ett spektralt omr\u00e5de i detalj.<\/p>\n<h2>1. Definition: Uppl\u00f6sning d\u00e4r det verkligen r\u00e4knas<\/h2>\n<p>Zoom FFT \u00e4r det b\u00e4sta verktyget n\u00e4r diagnostisk information finns i toppar som ligger f\u00f6r n\u00e4ra varandra f\u00f6r att kunna urskiljas i ett vanligt spektrum. De vanligaste fallen g\u00e4ller motor <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/broken-rotor-bars\/\">trasiga rotorst\u00e4nger<\/a> (uppl\u00f6sning av de sm\u00e5 polpass-sidebanden \u2014 med ett avst\u00e5nd motsvarande antalet poler \u00d7 <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/slip-frequency\/\">glidfrekvens<\/a> \u2014 runt 1\u00d7 driftvarvtal), <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/gear-defects\/\">problem med v\u00e4xeln<\/a> (avl\u00e4sa modulationsm\u00f6nstret kring ingreppsfrekvensen), och i alla situationer d\u00e4r tv\u00e5 viktiga toppar annars skulle sm\u00e4lta samman till en enda otydlig topp.<\/p>\n<h2>2. Varf\u00f6r Zoom FFT beh\u00f6vs<\/h2>\n<h3>Uppl\u00f6sningsgr\u00e4nsen f\u00f6r en standard-FFT<\/h3>\n<p>Varje vanlig FFT f\u00f6ljer ett oundvikligt samband:<\/p>\n<blockquote><p>Uppl\u00f6sning = F<sub>max<\/sub> \u00f7 Antal linjer.<\/p><\/blockquote>\n<p>Till exempel ger omr\u00e5det 0\u20131000 Hz med 800 linjer en uppl\u00f6sning p\u00e5 1.25 Hz \u2014 och tv\u00e5 toppar som ligger n\u00e4rmare \u00e4n 1.25 Hz g\u00e5r helt enkelt inte att skilja \u00e5t. Det \u00e4r ett verkligt problem f\u00f6r elektriska fel, d\u00e4r de intressanta polpass-sidebanden ofta ligger bara n\u00e5gra f\u00e5 hertz \u2014 ibland knappt 1\u20132 Hz \u2014 fr\u00e5n centraltoppen.<\/p>\n<h3>F\u00f6r- och nackdelarna med brute force-metoden<\/h3>\n<ul>\n<li><strong>Minska F<sub>max<\/sub>:<\/strong> Genom att s\u00e4nka frekvensomr\u00e5det till 0\u2013100 Hz f\u00f6rb\u00e4ttras uppl\u00f6sningen till 0,125 Hz, men allt inneh\u00e5ll i de h\u00f6gre frekvenserna g\u00e5r f\u00f6rlorat.<\/li>\n<li><strong>\u00d6ka antalet linjer:<\/strong> 8 000 linjer n\u00e5r ocks\u00e5 0,125 Hz, men kr\u00e4ver mycket processortid och minne.<\/li>\n<li><strong>Zooma FFT:<\/strong> ger den h\u00f6ga uppl\u00f6sningen precis d\u00e4r den beh\u00f6vs samtidigt som ber\u00e4kningskostnaden h\u00e5lls p\u00e5 en rimlig niv\u00e5 \u2013 det b\u00e4sta av tv\u00e5 v\u00e4rldar.<\/li>\n<\/ul>\n<p>Du kan f\u00e5 en f\u00f6rhandsvisning av dessa avv\u00e4gningar innan du m\u00e4ter med det kostnadsfria <a href=\"https:\/\/vibromera.eu\/sv\/calculators\/fft-resolution-calculator\/\">FFT-uppl\u00f6sningskalkylator<\/a>, som visar ett direkt samband mellan sp\u00e4nnvidd, antal linjer och uppl\u00f6sning.<\/p>\n<h2>3. Hur Zoom FFT fungerar<\/h2>\n<p>Tekniken \u00e4r ett digitalt \u201df\u00f6rstoringsglas\u201d som best\u00e5r av tre steg i signalbehandlingen:<\/p>\n<ol>\n<li><strong>V\u00e4lj band:<\/strong> V\u00e4lj en mittfrekvens och bandbredd, till exempel 100 Hz \u00b1 10 Hz.<\/li>\n<li><strong>Frekvensf\u00f6rskjutning:<\/strong> digitalt omvandla det bandet ned\u00e5t mot DC (basbandet), s\u00e5 att det omr\u00e5de som \u00e4r av intresse hamnar d\u00e4r FFT:ns uppl\u00f6sning \u00e4r som h\u00f6gst.<\/li>\n<li><strong>Decimering:<\/strong> minska samplingsfrekvensen i proportion till den minskade bandbredden.<\/li>\n<li><strong>FFT-ber\u00e4kning:<\/strong> utf\u00f6r omvandlingen p\u00e5 signalen med reducerad frekvens.<\/li>\n<li><strong>Resultat:<\/strong> ett h\u00f6guppl\u00f6st spektrum som endast t\u00e4cker det valda smala bandet.<\/li>\n<\/ol>\n<p>Utdelningen \u00e4r direkt proportionell mot hur mycket du zoomar: om du zoomar till en tiondel av det totala intervallet f\u00e5r du tio g\u00e5nger h\u00f6gre uppl\u00f6sning, s\u00e5 uppl\u00f6sningsvinsten ber\u00e4knas helt enkelt som (Totalt intervall \u00f7 Zoomintervall). Att g\u00e5 fr\u00e5n 0\u20131000 Hz med 1 Hz till ett f\u00f6nster p\u00e5 95\u2013105 Hz med 0,01 Hz inneb\u00e4r en hundrafaldig \u00f6kning.<\/p>\n<h2>4. Till\u00e4mpningar<\/h2>\n<h3>Detektering av fel i motorns rotorstavar<\/h3>\n<p>Den klassiska zoom-FFT-uppgiften. Polpassage-sidband (antal poler \u00d7 slipfrekvens) som ligger bara n\u00e5gra f\u00e5 hertz fr\u00e5n 1\u00d7-toppen \u00e4r f\u00f6r n\u00e4ra f\u00f6r att uppl\u00f6sas i ett standardspektrum, s\u00e5 en zoom runt 1\u00d7 <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/running-speed\/\">driftshastighet<\/a> vid 0,1 Hz eller b\u00e4ttre separerar dem tydligt och avsl\u00f6jar <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/broken-rotor-bars\/\">trasiga rotorst\u00e4nger<\/a>. Sidbandets amplitud i f\u00f6rh\u00e5llande till 1\u00d7-toppen visar hur m\u00e5nga rotorstavar som \u00e4r avbrutna.<\/p>\n<h3>V\u00e4xeldiagnostik<\/h3>\n<p>Zooma in kring <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/gear-mesh-frequency\/\">kugghjulsingreppsfrekvens<\/a> f\u00f6r att urskilja sidbanden med axelvarvtalets mellanrum, identifiera <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/hunting-tooth-frequency\/\">jakt-tand-frekvens<\/a> m\u00f6nster och skilja pinjonsidband fr\u00e5n kugghjulssidband. Det kostnadsfria <a href=\"https:\/\/vibromera.eu\/sv\/calculators\/gear-mesh-frequency\/\">Ber\u00e4kningsverktyg f\u00f6r kugghjulsingreppsfrekvens<\/a> anger var du ska placera zoomf\u00f6nstret fr\u00e5n b\u00f6rjan.<\/p>\n<h3>Lageranalys<\/h3>\n<p>Zooma in kring <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/bearing-fault-frequencies\/\">lagerfelfrekvenser<\/a> f\u00f6r att best\u00e4mma sidbandsstrukturen, j\u00e4mf\u00f6ra den exakta felfrekvensen med det ber\u00e4knade v\u00e4rdet och avl\u00e4sa moduleringsm\u00f6nstret som <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/envelope-analysis\/\">enveloppanalys<\/a> kuvertanalysen annars skulle ge.<\/p>\n<h3>Analys av elektrisk frekvens<\/h3>\n<p>Zooma in kring n\u00e4tfrekvensen eller 2\u00d7 n\u00e4tfrekvensen f\u00f6r att uppl\u00f6sa sidebanden som \u00e4r separerade med <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/pole-pass-frequency\/\">polpassfrekvens<\/a> i den str\u00f6mrelaterade vibrationen och m\u00e4t det avst\u00e5ndet exakt.<\/p>\n<h3>Studier av kritisk hastighet<\/h3>\n<p>Zooma in p\u00e5 en misst\u00e4nkt <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/natural-frequency\/\">naturlig frekvens<\/a> f\u00f6r att \u00e5tg\u00e4rda <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/resonance\/\">resonans<\/a> exakt och f\u00f6r att m\u00e4ta bredden p\u00e5 resonanstoppen, utifr\u00e5n vilken <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/damping\/\">d\u00e4mpning<\/a> kan uppskattas.<\/p>\n<h2>5. Arbetsrutin<\/h2>\n<h3>Installation<\/h3>\n<ol>\n<li><strong>Utf\u00f6r f\u00f6rst en standard-FFT<\/strong> f\u00f6r att hitta det omr\u00e5de man \u00e4r intresserad av \u2013 att zooma in \u00e4r aldrig ett f\u00f6rsta steg man tar i blindo.<\/li>\n<li><strong>V\u00e4lj mittfrekvens<\/strong> f\u00f6r zoomen.<\/li>\n<li><strong>V\u00e4lj spannet<\/strong> \u2014 ju smalare, desto h\u00f6gre uppl\u00f6sning.<\/li>\n<li><strong>St\u00e4ll in antalet linjer<\/strong> (vanligtvis samma som standard-FFT).<\/li>\n<li><strong>F\u00f6rv\u00e4rv<\/strong> och l\u00e5t instrumentet sk\u00f6ta zoomningen.<\/li>\n<\/ol>\n<h3>Vanliga inst\u00e4llningar<\/h3>\n<ul>\n<li><strong>Motorns sidoband:<\/strong> mittpunkt vid 1\u00d7 (30 Hz), m\u00e4tomr\u00e5de \u00b110 Hz, 800 linjer \u2192 uppl\u00f6sning 0,025 Hz.<\/li>\n<li><strong>Kugghjulsn\u00e4t:<\/strong> centrum vid GMF (600 Hz), intervall \u00b150 Hz, 1600 linjer \u2192 uppl\u00f6sning 0,0625 Hz.<\/li>\n<li><strong>Fel p\u00e5 lagret:<\/strong> centrum vid <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/bpfo\/\">BPFO<\/a> (150 Hz), intervall \u00b125 Hz, 800 linjer \u2192 uppl\u00f6sning 0,0625 Hz.<\/li>\n<\/ul>\n<h2>6. F\u00f6rdelar<\/h2>\n<ul>\n<li><strong>H\u00f6g uppl\u00f6sning:<\/strong> 10\u2013100 g\u00e5nger mer detaljerad \u00e4n en vanlig FFT, vilket g\u00f6r det m\u00f6jligt att urskilja toppar som annars \u00e4r om\u00f6jliga att s\u00e4rskilja och avsl\u00f6jar diagnostiska detaljer.<\/li>\n<li><strong>Ber\u00e4kningseffektivitet:<\/strong> betydligt billigare \u00e4n att \u00f6ka antalet linjer \u00f6ver hela spektrumet \u2013 snabbare och med mindre minnesbehov.<\/li>\n<li><strong>Precisionsfrekvensm\u00e4tning:<\/strong> fastst\u00e4ller den exakta toppfrekvensen s\u00e5 att den kan j\u00e4mf\u00f6ras med en teoretisk ber\u00e4kning, vilket bekr\u00e4ftar eller motbevisar en misstanke om <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/diagnosis\/\">diagnos<\/a>.<\/li>\n<\/ul>\n<h2>7. Begr\u00e4nsningar<\/h2>\n<ul>\n<li><strong>Endast smalband:<\/strong> den visar endast det markerade omr\u00e5det och bortser fr\u00e5n allt utanf\u00f6r det, s\u00e5 du m\u00e5ste redan ha en ungef\u00e4rlig uppfattning om var du ska leta \u2013 d\u00e4rav \u00f6versikten med standard-FFT f\u00f6rst.<\/li>\n<li><strong>Krav p\u00e5 anv\u00e4ndarkunskaper:<\/strong> Att v\u00e4lja en l\u00e4mplig mittfrekvens och ett l\u00e4mpligt spann kr\u00e4ver att man f\u00f6rst\u00e5r vad man letar efter, vilket g\u00f6r zoom-FFT ol\u00e4mplig f\u00f6r allm\u00e4n screening och mer kr\u00e4vande \u00e4n en vanlig FFT.<\/li>\n<li><strong>Tids\u00e5tg\u00e5ng:<\/strong> Det \u00e4r en extra m\u00e4tning ut\u00f6ver standardm\u00e4tningen, och den tid som kr\u00e4vs f\u00f6r inst\u00e4llning och val av parametrar \u00e4r motiverad f\u00f6r kritiska maskiner eller redan bekr\u00e4ftade problem, snarare \u00e4n f\u00f6r rutinm\u00e4ssiga unders\u00f6kningar.<\/li>\n<\/ul>\n<h2>8. Zoom-FFT i f\u00e4lt<\/h2>\n<p>\u00c4ven om den mest ing\u00e5ende analysen ofta \u00e4r f\u00f6rbeh\u00e5llen kritiska maskiner som \u00e4r permanent utrustade med m\u00e4tutrustning, \u00e4r samma princip ov\u00e4rderlig \u00e4ven vid mobil diagnostik. Efter en rutinm\u00e4ssig <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/faltbalansering\/\">f\u00e4ltbalansering<\/a> unders\u00f6kning, en tv\u00e5kanalsanalysator s\u00e5som <a href=\"https:\/\/vibromera.eu\/sv\/produkt\/balanset-1\/\">Balanset-1A<\/a> g\u00f6r det m\u00f6jligt f\u00f6r en ingenj\u00f6r att f\u00f6rstora ett misst\u00e4nkt omr\u00e5de i spektrumet \u2013 till exempel kring 1\u00d7 driftvarvtal \u2013 f\u00f6r att bekr\u00e4fta om en f\u00f6rh\u00f6jd topp \u00e4r ren <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/imbalance\/\">obalans<\/a> eller en klunga av elektriska sidband som d\u00f6ljer sig bakom den. Den skillnaden avg\u00f6r om \u00e5tg\u00e4rden \u00e4r en balanskorrigering eller en motorreparation, vilket \u00e4r anledningen till att det \u00e4r s\u00e5 anv\u00e4ndbart att kunna urskilja t\u00e4tt liggande toppar direkt p\u00e5 plats.<\/p>\n<p>Kort sagt \u00e4r Zoom FFT ett kraftfullt spektralverktyg som erbjuder den uppl\u00f6sning som kr\u00e4vs f\u00f6r att urskilja de t\u00e4tt samlade komponenterna bakom elektriska motorfel, v\u00e4xelfel och lagerproblem. Att veta n\u00e4r man ska anv\u00e4nda det, hur man v\u00e4ljer centrum och intervall samt hur man tolkar det resulterande h\u00f6guppl\u00f6sta spektrumet \u00e4r ett k\u00e4nnetecken f\u00f6r avancerad <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/vibration-analysis\/\">vibrationsanalys<\/a> samt detaljerad feldiagnos av komplexa maskiner.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/sv\/glossary\/\">\u2190 Tillbaka till huvudregistret<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>L\u00e4r dig om zoom FFT, en spektralanalysteknik som ger h\u00f6g frekvensuppl\u00f6sning i utvalda smala band, avg\u00f6rande f\u00f6r att separera t\u00e4tt liggande toppar och analysera sidband.<\/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\/sv\/wp-json\/wp\/v2\/glossary\/313","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/glossary\/313\/revisions"}],"predecessor-version":[{"id":102165,"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/glossary\/313\/revisions\/102165"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/media?parent=313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/categories?post=313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/tags?post=313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}