{"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\/cs\/glossary\/zoom-fft\/","title":{"rendered":"Co je Zoom FFT? Spektr\u00e1ln\u00ed anal\u00fdza s vysok\u00fdm rozli\u0161en\u00edm"},"content":{"rendered":"<h1>Principy zoomu 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\/cs\/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\/cs\/product\/balanset-1\/\" title=\"P\u0159enosn\u00fd vyva\u017eova\u010d a analyz\u00e1tor vibrac\u00ed 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=\"Kompletn\u00ed sada p\u0159enosn\u00e9ho vyva\u017eova\u010de a analyz\u00e1toru vibrac\u00ed Balanset-1A\" 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\/cs\/product-category\/devices\/\" rel=\"tag\">Za\u0159\u00edzen\u00ed<\/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\/cs\/product\/balanset-1\/\" title=\"P\u0159enosn\u00fd vyva\u017eova\u010d a analyz\u00e1tor vibrac\u00ed Balanset-1A\">P\u0159enosn\u00fd vyva\u017eova\u010d a analyz\u00e1tor vibrac\u00ed 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> + DPH (pokud se uplat\u0148uje)<\/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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" 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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/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\/cs\/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\/cs\/product\/vibration-sensor\/\" title=\"Sn\u00edma\u010d vibrac\u00ed\">\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=\"Sn\u00edma\u010d vibrac\u00ed Balanset-1A zbl\u00edzka\" 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\/cs\/product-category\/parts\/\" rel=\"tag\">D\u00edly<\/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\/cs\/product\/vibration-sensor\/\" title=\"Sn\u00edma\u010d vibrac\u00ed\">Sn\u00edma\u010d vibrac\u00ed<\/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> + DPH (pokud se uplat\u0148uje)<\/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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" 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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/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\/cs\/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\/cs\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optick\u00fd senzor (laserov\u00fd ot\u00e1\u010dkom\u011br)\">\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=\"Optick\u00fd senzor (laserov\u00fd ot\u00e1\u010dkom\u011br)\" 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\/cs\/product-category\/parts\/\" rel=\"tag\">D\u00edly<\/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\/cs\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optick\u00fd senzor (laserov\u00fd ot\u00e1\u010dkom\u011br)\">Optick\u00fd senzor (laserov\u00fd ot\u00e1\u010dkom\u011br)<\/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> + DPH (pokud se uplat\u0148uje)<\/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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" 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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/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\/cs\/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\/cs\/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=\"Sada pro vyva\u017eov\u00e1n\u00ed rotor\u016f Vibromera: p\u0159epravn\u00ed kuf\u0159\u00edk, v\u00edcekan\u00e1lov\u00fd zesilova\u010d sign\u00e1lu, ru\u010dn\u00ed analyz\u00e1tor, magnetick\u00e1 z\u00e1kladna, vibra\u010dn\u00ed senzory a spir\u00e1lov\u00e9 kabely.\" 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\/cs\/product-category\/devices\/\" rel=\"tag\">Za\u0159\u00edzen\u00ed<\/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\/cs\/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> + DPH (pokud se uplat\u0148uje)<\/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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" 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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/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\/cs\/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\/cs\/product\/magnet-stand\/\" title=\"Magnetick\u00fd stojan 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=\"Magnetick\u00e1 z\u00e1kladna.\" 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\/cs\/product-category\/parts\/\" rel=\"tag\">D\u00edly<\/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\/cs\/product\/magnet-stand\/\" title=\"Magnetick\u00fd stojan Insize-60 kgf\">Magnetick\u00fd stojan 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> + DPH (pokud se uplat\u0148uje)<\/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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" 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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/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\/cs\/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\/cs\/product\/reflective-tape\/\" title=\"Reflexn\u00ed p\u00e1ska\">\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=\"Reflexn\u00ed p\u00e1ska\" 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\/cs\/product-category\/parts\/\" rel=\"tag\">D\u00edly<\/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\/cs\/product\/reflective-tape\/\" title=\"Reflexn\u00ed p\u00e1ska\">Reflexn\u00ed p\u00e1ska<\/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> + DPH (pokud se uplat\u0148uje)<\/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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" 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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/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\/cs\/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\/cs\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamick\u00fd vyva\u017eova\u010d &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=\"Obsah sady Balanset-1A s jednotkou rozhran\u00ed, senzory, ot\u00e1\u010dkom\u011brem a p\u0159\u00edslu\u0161enstv\u00edm\" 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\/cs\/product-category\/devices\/\" rel=\"tag\">Za\u0159\u00edzen\u00ed<\/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\/cs\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamick\u00fd vyva\u017eova\u010d &quot;Balanset-1A&quot; OEM\">Dynamick\u00fd vyva\u017eova\u010d \"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> + DPH (pokud se uplat\u0148uje)<\/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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" 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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/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 naz\u00fdvan\u00e1 tak\u00e9 FFT s vysok\u00fdm rozli\u0161en\u00edm nebo frekven\u010dn\u00ed zoom \u2014 je pokro\u010dil\u00e9 vyu\u017eit\u00ed <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/fft\/\">Rychl\u00e1 Fourierova transformace<\/a> kter\u00e9 soust\u0159e\u010fuje velmi jemn\u00e9 frekven\u010dn\u00ed rozli\u0161en\u00ed do zvolen\u00e9ho \u00fazk\u00e9ho p\u00e1sma, m\u00edsto aby ho rozptylovalo po cel\u00e9 \u0161\u00ed\u0159ce <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/spectrum\/\">spektrum<\/a>. Nam\u00edsto anal\u00fdzy p\u00e1sma 0\u20131000 Hz s rozli\u0161en\u00edm 1 Hz (1000 \u0159\u00e1dk\u016f) m\u016f\u017ee zoomov\u00e1 FFT analyzovat p\u00e1smo 95\u2013105 Hz s rozli\u0161en\u00edm 0,01 Hz \u2013 st\u00e1le se jedn\u00e1 o stejn\u00fdch 1000 \u0159\u00e1dk\u016f, ale v\u0161echny jsou nyn\u00ed soust\u0159ed\u011bny do okna o \u0161\u00ed\u0159ce 10 Hz. Toto ston\u00e1sobn\u00e9 zv\u00fd\u0161en\u00ed rozli\u0161en\u00ed umo\u017e\u0148uje analytikovi rozli\u0161it t\u011bsn\u011b vedle sebe le\u017e\u00edc\u00ed slo\u017eky, jako jsou <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/sidebands\/\">postrann\u00ed p\u00e1sma<\/a>, ur\u010dit p\u0159esnou \u0161pi\u010dkovou frekvenci a podrobn\u011b prozkoumat jednu spektr\u00e1ln\u00ed oblast.<\/p>\n<h2>1. Definice: Rozli\u0161en\u00ed tam, kde na tom z\u00e1le\u017e\u00ed<\/h2>\n<p>Zoom FFT je ide\u00e1ln\u00ed volbou v\u017edy, kdy\u017e jsou diagnostick\u00e9 informace obsa\u017eeny ve \u0161pi\u010dk\u00e1ch, kter\u00e9 jsou p\u0159\u00edli\u0161 bl\u00edzko u sebe na to, aby je bylo mo\u017en\u00e9 rozli\u0161it na b\u011b\u017en\u00e9m spektru. Typick\u00fdmi p\u0159\u00edklady jsou motory <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/broken-rotor-bars\/\">zlomen\u00e9 rotorov\u00e9 ty\u010de<\/a> (rozli\u0161en\u00ed mal\u00fdch postrann\u00edch p\u00e1sem frekvence pr\u016fchodu p\u00f3l\u016f \u2014 vzd\u00e1len\u00fdch o po\u010det p\u00f3l\u016f \u00d7 <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/slip-frequency\/\">frekvence skluzu<\/a> \u2014 kolem 1\u00d7 provozn\u00edch ot\u00e1\u010dek), <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/gear-defects\/\">probl\u00e9my s p\u0159evodovkou<\/a> (\u010dten\u00ed modula\u010dn\u00edho vzorce v okol\u00ed frekvence z\u00e1b\u011bru) a v jak\u00e9koli situaci, kdy by se jinak dva v\u00fdznamn\u00e9 vrcholy spojily do jedn\u00e9 rozmazan\u00e9 skvrny.<\/p>\n<h2>2. Pro\u010d je pot\u0159eba Zoom FFT<\/h2>\n<h3>Rozli\u0161ovac\u00ed schopnost standardn\u00ed FFT<\/h3>\n<p>Ka\u017ed\u00e1 b\u011b\u017en\u00e1 FFT se \u0159\u00edd\u00ed jedn\u00edm nevyhnuteln\u00fdm vztahem:<\/p>\n<blockquote><p>Rozli\u0161en\u00ed = F<sub>max<\/sub> \u00f7 Po\u010det \u0159\u00e1dk\u016f.<\/p><\/blockquote>\n<p>Nap\u0159\u00edklad rozsah 0\u20131000 Hz s 800 liniemi d\u00e1v\u00e1 rozli\u0161en\u00ed 1.25 Hz \u2014 a dva vrcholy bl\u00ed\u017ee ne\u017e 1.25 Hz prost\u011b nelze od sebe odli\u0161it. To je skute\u010dn\u00fd probl\u00e9m u elektrick\u00fdch poruch, kde jsou zaj\u00edmav\u00e1 postrann\u00ed p\u00e1sma frekvence pr\u016fchodu p\u00f3l\u016f \u010dasto jen n\u011bkolik hertz\u016f \u2014 n\u011bkdy sotva 1\u20132 Hz \u2014 od centr\u00e1ln\u00edho vrcholu.<\/p>\n<h3>V\u00fdhody a nev\u00fdhody metody hrub\u00e9 s\u00edly<\/h3>\n<ul>\n<li><strong>Sn\u00ed\u017een\u00ed F<sub>max<\/sub>:<\/strong> Sn\u00ed\u017een\u00ed frekven\u010dn\u00edho rozsahu na 0\u2013100 Hz sice zvy\u0161uje rozli\u0161en\u00ed na 0,125 Hz, ale z\u00e1rove\u0148 doch\u00e1z\u00ed ke ztr\u00e1t\u011b ve\u0161ker\u00e9ho obsahu ve vy\u0161\u0161\u00edch frekvenc\u00edch.<\/li>\n<li><strong>Zvy\u0161te po\u010det \u0159\u00e1dk\u016f:<\/strong> I p\u0159i 8 000 \u0159\u00e1dc\u00edch se rozli\u0161en\u00ed dostane na 0,125 Hz, ale je to n\u00e1ro\u010dn\u00e9 na v\u00fdpo\u010detn\u00ed \u010das a pam\u011b\u0165.<\/li>\n<li><strong>Zoom FFT:<\/strong> nab\u00edz\u00ed vysok\u00e9 rozli\u0161en\u00ed p\u0159esn\u011b tam, kde je to pot\u0159eba, a p\u0159itom zachov\u00e1v\u00e1 p\u0159ijatelnou v\u00fdpo\u010detn\u00ed n\u00e1ro\u010dnost \u2013 to nejlep\u0161\u00ed z obou sv\u011bt\u016f.<\/li>\n<\/ul>\n<p>Tyto kompromisy si m\u016f\u017eete p\u0159ed m\u011b\u0159en\u00edm prohl\u00e9dnout v bezplatn\u00e9 verzi <a href=\"https:\/\/vibromera.eu\/cs\/calculators\/fft-resolution-calculator\/\">Kalkula\u010dka rozli\u0161en\u00ed FFT<\/a>, co\u017e p\u0159\u00edmo souvis\u00ed s rozp\u011bt\u00edm, po\u010dtem \u0159\u00e1dk\u016f a rozli\u0161en\u00edm.<\/p>\n<h2>3. Jak funguje Zoom FFT<\/h2>\n<p>Tato technika p\u0159edstavuje digit\u00e1ln\u00ed \u201elupu\u201c, kter\u00e1 se skl\u00e1d\u00e1 ze t\u0159\u00ed krok\u016f zpracov\u00e1n\u00ed sign\u00e1lu:<\/p>\n<ol>\n<li><strong>Vyberte p\u00e1smo:<\/strong> zvolte st\u0159edn\u00ed frekvenci a \u0161\u00ed\u0159ku p\u00e1sma, nap\u0159\u00edklad 100 Hz \u00b1 10 Hz.<\/li>\n<li><strong>Posun frekvence:<\/strong> digit\u00e1ln\u011b p\u0159ev\u00e9st toto p\u00e1smo sm\u011brem k DC (z\u00e1kladn\u00ed p\u00e1smo), tak\u017ee oblast z\u00e1jmu se nach\u00e1z\u00ed tam, kde je rozli\u0161en\u00ed FFT p\u0159irozen\u011b nejvy\u0161\u0161\u00ed.<\/li>\n<li><strong>Decimace:<\/strong> sn\u00ed\u017eit vzorkovac\u00ed frekvenci \u00fam\u011brn\u011b k z\u00fa\u017een\u00e9 \u0161\u00ed\u0159ce p\u00e1sma.<\/li>\n<li><strong>V\u00fdpo\u010det FFT:<\/strong> prov\u00e9st transformaci na sign\u00e1lu se sn\u00ed\u017eenou vzorkovac\u00ed frekvenc\u00ed.<\/li>\n<li><strong>V\u00fdsledek:<\/strong> spektrum s vysok\u00fdm rozli\u0161en\u00edm pokr\u00fdvaj\u00edc\u00ed pouze vybran\u00e9 \u00fazk\u00e9 p\u00e1smo.<\/li>\n<\/ol>\n<p>V\u00fdkonnost se p\u0159\u00edmo \u00fam\u011brn\u011b zvy\u0161uje s m\u00edrou p\u0159ibl\u00ed\u017een\u00ed: p\u0159ibl\u00ed\u017een\u00ed na desetinu celkov\u00e9ho rozsahu p\u0159in\u00e1\u0161\u00ed desetkr\u00e1t vy\u0161\u0161\u00ed rozli\u0161en\u00ed, tak\u017ee n\u00e1r\u016fst rozli\u0161en\u00ed se d\u00e1 vyj\u00e1d\u0159it jednodu\u0161e jako (celkov\u00fd rozsah \u00f7 rozsah p\u0159ibl\u00ed\u017een\u00ed). P\u0159echod z rozsahu 0\u20131000 Hz s krokem 1 Hz na okno 95\u2013105 Hz s krokem 0,01 Hz p\u0159edstavuje ston\u00e1sobn\u00fd n\u00e1r\u016fst.<\/p>\n<h2>4. Aplikace<\/h2>\n<h3>Detekce vad v ty\u010d\u00edch rotoru motoru<\/h3>\n<p>Klasick\u00e1 \u00faloha pro zoom FFT. Postrann\u00ed p\u00e1sma pr\u016fchodu p\u00f3l\u016f (po\u010det p\u00f3l\u016f \u00d7 skluzov\u00e1 frekvence), vzd\u00e1len\u00e1 jen n\u011bkolik hertz\u016f od \u0161pi\u010dky 1\u00d7, jsou ve standardn\u00edm spektru p\u0159\u00edli\u0161 bl\u00edzko na rozli\u0161en\u00ed, proto zoom kolem 1\u00d7 <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/running-speed\/\">provozn\u00ed ot\u00e1\u010dky<\/a> p\u0159i frekvenci 0,1 Hz nebo lep\u0161\u00ed je \u010dist\u011b odd\u011bl\u00ed a odhal\u00ed <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/broken-rotor-bars\/\">zlomen\u00e9 rotorov\u00e9 ty\u010de<\/a>. Amplituda postrann\u00edho p\u00e1sma vzhledem k vrcholu 1\u00d7 ud\u00e1v\u00e1, kolik ty\u010d\u00ed je p\u0159eru\u0161eno.<\/p>\n<h3>Diagnostika p\u0159evodovky<\/h3>\n<p>P\u0159ibli\u017ete se na <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/gear-mesh-frequency\/\">frekvence z\u00e1b\u011bru ozuben\u00fdch kol<\/a> k rozli\u0161en\u00ed postrann\u00edch p\u00e1sem rozlo\u017een\u00fdch podle ot\u00e1\u010dek h\u0159\u00eddele, ur\u010dit <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/hunting-tooth-frequency\/\">hunting-tooth-frequency<\/a> vzory a rozli\u0161ovat postrann\u00ed p\u00e1sma pastorku od postrann\u00edch p\u00e1sem ozuben\u00e9ho kola. Voln\u00fd <a href=\"https:\/\/vibromera.eu\/cs\/calculators\/gear-mesh-frequency\/\">Kalkul\u00e1tor frekvence z\u00e1b\u011bru ozuben\u00fdch kol<\/a> v\u00e1m nejprve uk\u00e1\u017ee, kam m\u00e1te zoom nasm\u011brovat.<\/p>\n<h3>Anal\u00fdza lo\u017eisek<\/h3>\n<p>P\u0159ibli\u017ete se na <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/bearing-fault-frequencies\/\">frekvence poruch lo\u017eisek<\/a> aby ur\u010dili strukturu postrann\u00edch p\u00e1sem, ov\u011b\u0159ili p\u0159esnou frekvenci poruchy ve srovn\u00e1n\u00ed s vypo\u010d\u00edtanou hodnotou a zjistili modulaci, kter\u00e1 <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/envelope-analysis\/\">obalov\u00e1 anal\u00fdza<\/a> by jinak nesl.<\/p>\n<h3>Anal\u00fdza elektrick\u00fdch frekvenc\u00ed<\/h3>\n<p>P\u0159ibli\u017ete oblast kolem s\u00ed\u0165ov\u00e9 frekvence nebo 2\u00d7 s\u00ed\u0165ov\u00e9 frekvence, abyste rozli\u0161ili postrann\u00ed p\u00e1sma vzd\u00e1len\u00e1 o <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/pole-pass-frequency\/\">frekvence pr\u016fchodu ty\u010d\u00ed<\/a> v proudem vyvolan\u00fdch vibrac\u00edch a p\u0159esn\u011b zm\u011b\u0159ili tento rozestup.<\/p>\n<h3>Studie kritick\u00e9 rychlosti<\/h3>\n<p>P\u0159ibli\u017ete se na podez\u0159el\u00e9 <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/natural-frequency\/\">vlastn\u00ed frekvence<\/a> stanovit <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/resonance\/\">rezonance<\/a> p\u0159esn\u011b a zm\u011b\u0159it \u0161\u00ed\u0159ku rezonan\u010dn\u00edho p\u00edku, z \u010deho\u017e <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/damping\/\">tlumen\u00ed<\/a> lze odhadnout.<\/p>\n<h2>5. Provozn\u00ed postup<\/h2>\n<h3>Nastaven\u00ed<\/h3>\n<ol>\n<li><strong>Nejprve prove\u010fte standardn\u00ed FFT<\/strong> Chcete-li naj\u00edt po\u017eadovanou oblast, nikdy neza\u010d\u00ednejte s n\u00e1hodn\u00fdm p\u0159ibl\u00ed\u017een\u00edm.<\/li>\n<li><strong>Vyberte centrum<\/strong> frekvence pro p\u0159ibl\u00ed\u017een\u00ed.<\/li>\n<li><strong>Vyberte rozp\u011bt\u00ed<\/strong> \u2014 u\u017e\u0161\u00ed znamen\u00e1 vy\u0161\u0161\u00ed rozli\u0161en\u00ed.<\/li>\n<li><strong>Nastavit po\u010det \u0159\u00e1dk\u016f<\/strong> (obvykle se shoduje se standardn\u00ed FFT).<\/li>\n<li><strong>Z\u00edskat<\/strong> a nechte p\u0159\u00edstroj, aby s\u00e1m nastavil p\u0159ibl\u00ed\u017een\u00ed.<\/li>\n<\/ol>\n<h3>Typick\u00e1 nastaven\u00ed<\/h3>\n<ul>\n<li><strong>Bo\u010dn\u00ed p\u00e1sma motoru:<\/strong> st\u0159ed na 1\u00d7 (30 Hz), rozsah \u00b110 Hz, 800 \u0159\u00e1dk\u016f \u2192 rozli\u0161en\u00ed 0,025 Hz.<\/li>\n<li><strong>Ozuben\u00e9 kolo:<\/strong> st\u0159ed v p\u00e1smu GMF (600 Hz), rozsah \u00b150 Hz, 1600 \u0159\u00e1dk\u016f \u2192 rozli\u0161en\u00ed 0,0625 Hz.<\/li>\n<li><strong>Z\u00e1vada lo\u017eiska:<\/strong> centrum v <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/bpfo\/\">BPFO<\/a> (150 Hz), rozsah \u00b125 Hz, 800 \u0159\u00e1dk\u016f \u2192 rozli\u0161en\u00ed 0,0625 Hz.<\/li>\n<\/ul>\n<h2>6. V\u00fdhody<\/h2>\n<ul>\n<li><strong>Vysok\u00e9 rozli\u0161en\u00ed:<\/strong> 10\u2013100\u00d7 jemn\u011bj\u0161\u00ed ne\u017e standardn\u00ed FFT, d\u00edky \u010demu\u017e rozli\u0161uje p\u00edky, kter\u00e9 by jinak nebylo mo\u017en\u00e9 odli\u0161it, a odhaluje diagnostick\u00e9 detaily.<\/li>\n<li><strong>V\u00fdpo\u010detn\u00ed efektivita:<\/strong> mnohem levn\u011bj\u0161\u00ed ne\u017e zvy\u0161ov\u00e1n\u00ed po\u010dtu \u0159\u00e1dk\u016f v cel\u00e9m spektru \u2013 rychlej\u0161\u00ed a s men\u0161\u00edmi n\u00e1roky na pam\u011b\u0165.<\/li>\n<li><strong>P\u0159esn\u00e9 m\u011b\u0159en\u00ed frekvence:<\/strong> ur\u010d\u00ed p\u0159esnou \u0161pi\u010dkovou frekvenci, aby ji bylo mo\u017en\u00e9 porovnat s teoretick\u00fdm v\u00fdpo\u010dtem a potvrdit \u010di vyvr\u00e1tit p\u0159edpokl\u00e1danou <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/diagnosis\/\">diagn\u00f3za<\/a>.<\/li>\n<\/ul>\n<h2>7. Omezen\u00ed<\/h2>\n<ul>\n<li><strong>Pouze \u00fazkop\u00e1smov\u00fd rozsah:<\/strong> zobrazuje pouze vybranou oblast a v\u0161e mimo ni ignoruje, tak\u017ee mus\u00edte u\u017e zhruba v\u011bd\u011bt, kam se pod\u00edvat \u2013 proto je na za\u010d\u00e1tku p\u0159ehled standardn\u00ed FFT.<\/li>\n<li><strong>Po\u017eadovan\u00e9 znalosti u\u017eivatele:<\/strong> V\u00fdb\u011br vhodn\u00e9ho st\u0159edu a rozsahu vy\u017eaduje pochopen\u00ed toho, co vlastn\u011b hled\u00e1te, co\u017e \u010din\u00ed zoomovou FFT nevhodnou pro obecn\u00e9 prov\u011b\u0159ov\u00e1n\u00ed a n\u00e1ro\u010dn\u011bj\u0161\u00ed ne\u017e b\u011b\u017enou FFT.<\/li>\n<li><strong>\u010casov\u00e1 n\u00e1ro\u010dnost:<\/strong> Jedn\u00e1 se o dopl\u0148kov\u00e9 m\u011b\u0159en\u00ed nad r\u00e1mec standardn\u00edho postupu, jeho\u017e n\u00e1ro\u010dnost na nastaven\u00ed a v\u00fdb\u011br parametr\u016f je opodstatn\u011bn\u00e1 sp\u00ed\u0161e u kritick\u00fdch stroj\u016f nebo ji\u017e potvrzen\u00fdch probl\u00e9m\u016f ne\u017e p\u0159i rutinn\u00edch kontrol\u00e1ch.<\/li>\n<\/ul>\n<h2>8. P\u0159ibl\u00ed\u017een\u00e1 FFT v ter\u00e9nu<\/h2>\n<p>A\u010dkoli se nejhlub\u0161\u00ed anal\u00fdza dat \u010dasto vyu\u017e\u00edv\u00e1 pouze u kritick\u00fdch stroj\u016f vybaven\u00fdch st\u00e1l\u00fdmi m\u011b\u0159ic\u00edmi p\u0159\u00edstroji, stejn\u00fd princip m\u00e1 neoceniteln\u00fd v\u00fdznam i v p\u0159enosn\u00e9 diagnostice. Po rutinn\u00ed <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/vyrovnavani-poli\/\">vyva\u017eov\u00e1n\u00ed v ter\u00e9nu<\/a> pr\u016fzkum, dvoukan\u00e1lov\u00fd analyz\u00e1tor, jako je nap\u0159\u00edklad <a href=\"https:\/\/vibromera.eu\/cs\/produkt\/balanset-1\/\">Balanset-1A<\/a> umo\u017e\u0148uje in\u017een\u00fdrovi zv\u011bt\u0161it podez\u0159elou oblast spektra \u2013 \u0159ekn\u011bme v okol\u00ed 1\u00d7 provozn\u00ed frekvence \u2013 a ov\u011b\u0159it tak, zda je zv\u00fd\u0161en\u00fd p\u00edk \u010dist\u00fd <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/imbalance\/\">nevyv\u00e1\u017eenost<\/a> nebo skupinu elektrick\u00fdch postrann\u00edch p\u00e1sem, kter\u00e1 se pod n\u00edm skr\u00fdv\u00e1. Pr\u00e1v\u011b toto rozli\u0161en\u00ed rozhoduje o tom, zda je \u0159e\u0161en\u00edm korekce vyv\u00e1\u017een\u00ed, nebo oprava motoru, a proto je tak u\u017eite\u010dn\u00e9 um\u011bt na m\u00edst\u011b rozli\u0161it bl\u00edzko u sebe le\u017e\u00edc\u00ed \u0161pi\u010dky.<\/p>\n<p>Stru\u010dn\u011b \u0159e\u010deno, funkce Zoom FFT je v\u00fdkonn\u00fd spektr\u00e1ln\u00ed n\u00e1stroj, kter\u00fd poskytuje rozli\u0161en\u00ed pot\u0159ebn\u00e9 k rozli\u0161en\u00ed t\u011bsn\u011b soused\u00edc\u00edch slo\u017eek zp\u016fsoben\u00fdch elektrick\u00fdmi poruchami motoru, vadami p\u0159evodovky a probl\u00e9my s lo\u017eisky. Schopnost rozpoznat, kdy tento n\u00e1stroj pou\u017e\u00edt, jak zvolit st\u0159ed a rozsah a jak interpretovat v\u00fdsledn\u00e9 spektrum s vysok\u00fdm rozli\u0161en\u00edm, je charakteristick\u00fdm znakem pokro\u010dil\u00fdch <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/vibration-analysis\/\">anal\u00fdza vibrac\u00ed<\/a> a podrobn\u00e1 diagnostika poruch u slo\u017eit\u00fdch strojn\u00edch za\u0159\u00edzen\u00ed.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/cs\/glossary\/\">\u2190 Zp\u011bt na hlavn\u00ed index<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Seznamte se s metodou zoom FFT, technikou spektr\u00e1ln\u00ed anal\u00fdzy poskytuj\u00edc\u00ed vysokofrekven\u010dn\u00ed rozli\u0161en\u00ed ve vybran\u00fdch \u00fazk\u00fdch p\u00e1smech, co\u017e je nezbytn\u00e9 pro rozli\u0161en\u00ed bl\u00edzko sebe rozm\u00edst\u011bn\u00fdch \u0161pi\u010dek a anal\u00fdzu postrann\u00edch p\u00e1sem.<\/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\/cs\/wp-json\/wp\/v2\/glossary\/313","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/glossary\/313\/revisions"}],"predecessor-version":[{"id":102165,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/glossary\/313\/revisions\/102165"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/media?parent=313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/categories?post=313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/tags?post=313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}