{"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\/sk\/glossary\/zoom-fft\/","title":{"rendered":"\u010co je Zoom FFT? Spektr\u00e1lna anal\u00fdza s vysok\u00fdm rozl\u00ed\u0161en\u00edm"},"content":{"rendered":"<h1>Pochopenie 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\/sk\/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\/sk\/product\/balanset-1\/\" title=\"Prenosn\u00fd vyva\u017eova\u010d a analyz\u00e1tor vibr\u00e1ci\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\u00e1 s\u00faprava prenosn\u00e9ho vyva\u017eovacieho zariadenia a analyz\u00e1tora vibr\u00e1ci\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\/sk\/product-category\/devices\/\" rel=\"tag\">Zariadenia<\/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\/sk\/product\/balanset-1\/\" title=\"Prenosn\u00fd vyva\u017eova\u010d a analyz\u00e1tor vibr\u00e1ci\u00ed Balanset-1A\">Prenosn\u00fd vyva\u017eova\u010d a analyz\u00e1tor vibr\u00e1ci\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 (ak sa 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=\"\/sk\/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=\"Prida\u0165 do ko\u0161\u00edka\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Prida\u0165 do ko\u0161\u00edka\" 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=\"\/sk\/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=\"Prida\u0165 do ko\u0161\u00edka: \u201ePortable balancer &amp; Vibration analyzer Balanset-1A\u201c\" rel=\"nofollow\" data-success_message=\"\u201ePortable balancer &amp; Vibration analyzer Balanset-1A\u201c bol pridan\u00fd do v\u00e1\u0161ho ko\u0161\u00edka\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Prida\u0165 do ko\u0161\u00edka<\/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\/sk\/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\/sk\/product\/vibration-sensor\/\" title=\"Sn\u00edma\u010d vibr\u00e1ci\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 vibr\u00e1ci\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\/sk\/product-category\/parts\/\" rel=\"tag\">Diely<\/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\/sk\/product\/vibration-sensor\/\" title=\"Sn\u00edma\u010d vibr\u00e1ci\u00ed\">Sn\u00edma\u010d vibr\u00e1ci\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 (ak sa 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=\"\/sk\/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=\"Prida\u0165 do ko\u0161\u00edka\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Prida\u0165 do ko\u0161\u00edka\" 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=\"\/sk\/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=\"Prida\u0165 do ko\u0161\u00edka: \u201eVibration sensor\u201c\" rel=\"nofollow\" data-success_message=\"\u201eVibration sensor\u201c bol pridan\u00fd do v\u00e1\u0161ho ko\u0161\u00edka\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Prida\u0165 do ko\u0161\u00edka<\/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\/sk\/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\/sk\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optick\u00fd senzor (laserov\u00fd tachometer)\">\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 tachometer)\" 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\/sk\/product-category\/parts\/\" rel=\"tag\">Diely<\/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\/sk\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optick\u00fd senzor (laserov\u00fd tachometer)\">Optick\u00fd senzor (laserov\u00fd tachometer)<\/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 (ak sa 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=\"\/sk\/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=\"Prida\u0165 do ko\u0161\u00edka\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Prida\u0165 do ko\u0161\u00edka\" 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=\"\/sk\/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=\"Prida\u0165 do ko\u0161\u00edka: \u201eOptical Sensor (Laser Tachometer)\u201c\" rel=\"nofollow\" data-success_message=\"\u201eOptical Sensor (Laser Tachometer)\u201c bol pridan\u00fd do v\u00e1\u0161ho ko\u0161\u00edka\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Prida\u0165 do ko\u0161\u00edka<\/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\/sk\/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\/sk\/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=\"S\u00faprava na vyva\u017eovanie rotora Vibromera: prenosn\u00e9 puzdro, viackan\u00e1lov\u00fd prevodn\u00edk sign\u00e1lu, ru\u010dn\u00fd analyz\u00e1tor, magnetick\u00e1 z\u00e1klad\u0148a, vibra\u010dn\u00e9 senzory a \u0161pir\u00e1lov\u00e9 k\u00e1ble.\" 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\/sk\/product-category\/devices\/\" rel=\"tag\">Zariadenia<\/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\/sk\/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 (ak sa 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=\"\/sk\/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=\"Prida\u0165 do ko\u0161\u00edka\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Prida\u0165 do ko\u0161\u00edka\" 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=\"\/sk\/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=\"Prida\u0165 do ko\u0161\u00edka: \u201eBalanset-4\u201c\" rel=\"nofollow\" data-success_message=\"\u201eBalanset-4\u201c bol pridan\u00fd do v\u00e1\u0161ho ko\u0161\u00edka\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Prida\u0165 do ko\u0161\u00edka<\/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\/sk\/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\/sk\/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\u00e1klad\u0148a.\" 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\/sk\/product-category\/parts\/\" rel=\"tag\">Diely<\/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\/sk\/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 (ak sa 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=\"\/sk\/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=\"Prida\u0165 do ko\u0161\u00edka\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Prida\u0165 do ko\u0161\u00edka\" 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=\"\/sk\/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=\"Prida\u0165 do ko\u0161\u00edka: \u201eMagnetic Stand Insize-60-kgf\u201c\" rel=\"nofollow\" data-success_message=\"\u201eMagnetic Stand Insize-60-kgf\u201c bol pridan\u00fd do v\u00e1\u0161ho ko\u0161\u00edka\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Prida\u0165 do ko\u0161\u00edka<\/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\/sk\/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\/sk\/product\/reflective-tape\/\" title=\"Reflexn\u00e1 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\u00e1 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\/sk\/product-category\/parts\/\" rel=\"tag\">Diely<\/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\/sk\/product\/reflective-tape\/\" title=\"Reflexn\u00e1 p\u00e1ska\">Reflexn\u00e1 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 (ak sa 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=\"\/sk\/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=\"Prida\u0165 do ko\u0161\u00edka\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Prida\u0165 do ko\u0161\u00edka\" 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=\"\/sk\/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=\"Prida\u0165 do ko\u0161\u00edka: \u201eReflective tape\u201c\" rel=\"nofollow\" data-success_message=\"\u201eReflective tape\u201c bol pridan\u00fd do v\u00e1\u0161ho ko\u0161\u00edka\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Prida\u0165 do ko\u0161\u00edka<\/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\/sk\/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\/sk\/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 s\u00fapravy Balanset-1A s jednotkou rozhrania, sn\u00edma\u010dmi, tachometrom a pr\u00edslu\u0161enstvom\" 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\/sk\/product-category\/devices\/\" rel=\"tag\">Zariadenia<\/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\/sk\/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 (ak sa 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=\"\/sk\/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=\"Prida\u0165 do ko\u0161\u00edka\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Prida\u0165 do ko\u0161\u00edka\" 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=\"\/sk\/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=\"Prida\u0165 do ko\u0161\u00edka: \u201eDynamic balancer \u201cBalanset-1A\u201d OEM\u201c\" rel=\"nofollow\" data-success_message=\"\u201eDynamic balancer \u201cBalanset-1A\u201d OEM\u201c bol pridan\u00fd do v\u00e1\u0161ho ko\u0161\u00edka\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Prida\u0165 do ko\u0161\u00edka<\/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>Pribl\u00ed\u017eenie FFT<\/strong> \u2014 naz\u00fdvan\u00e1 tie\u017e FFT s vysok\u00fdm rozl\u00ed\u0161en\u00edm alebo frekven\u010dn\u00fd zoom \u2014 je pokro\u010dil\u00e9 vyu\u017eitie <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/fft\/\">R\u00fdchla Fourierova transform\u00e1cia<\/a> ktor\u00e9 s\u00fastre\u010fuje ve\u013emi jemn\u00e9 frekven\u010dn\u00e9 rozl\u00ed\u0161enie v r\u00e1mci zvolen\u00e9ho \u00fazkeho p\u00e1sma namiesto toho, aby ho rozpt\u00fdlilo po celom <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/spectrum\/\">spektrum<\/a>. Namiesto anal\u00fdzy frekven\u010dn\u00e9ho p\u00e1sma 0\u20131000 Hz s rozl\u00ed\u0161en\u00edm 1 Hz (1000 riadkov) m\u00f4\u017ee zoom FFT analyzova\u0165 p\u00e1smo 95\u2013105 Hz s rozl\u00ed\u0161en\u00edm 0,01 Hz \u2013 st\u00e1le ide o t\u00fdch ist\u00fdch 1000 riadkov, av\u0161ak v\u0161etky s\u00fa s\u00fastreden\u00e9 do 10 Hz okna. Toto ston\u00e1sobn\u00e9 zosilnenie umo\u017e\u0148uje analytikovi odl\u00ed\u0161i\u0165 komponenty s mal\u00fdm frekven\u010dn\u00fdm odstupom, ako napr\u00edklad <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/sidebands\/\">bo\u010dn\u00e9 p\u00e1sma<\/a>, ur\u010di\u0165 presn\u00fa \u0161pi\u010dkov\u00fa frekvenciu a podrobne presk\u00fama\u0165 jednu spektr\u00e1lnu oblas\u0165.<\/p>\n<h2>1. Defin\u00edcia: Rozl\u00ed\u0161enie tam, kde na tom z\u00e1le\u017e\u00ed<\/h2>\n<p>Zoom FFT je ide\u00e1lnym n\u00e1strojom v\u017edy, ke\u010f s\u00fa diagnostick\u00e9 inform\u00e1cie obsiahnut\u00e9 v \u0161pi\u010dk\u00e1ch, ktor\u00e9 s\u00fa pr\u00edli\u0161 bl\u00edzko pri sebe na to, aby ich be\u017en\u00e9 spektrum dok\u00e1zalo odl\u00ed\u0161i\u0165. Typick\u00fdmi pr\u00edpadmi s\u00fa motorick\u00e9 <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/broken-rotor-bars\/\">zlomen\u00e9 rotorov\u00e9 ty\u010de<\/a> (rozl\u00ed\u0161enie drobn\u00fdch postrann\u00fdch p\u00e1siem frekvencie prechodu p\u00f3lov \u2014 vzdialen\u00fdch o po\u010det p\u00f3lov \u00d7 <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/slip-frequency\/\">frekvencia sklzu<\/a> \u2014 okolo 1\u00d7 ot\u00e1\u010dkovej frekvencie), <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/gear-defects\/\">probl\u00e9my s prevodovkou<\/a> (\u010d\u00edtanie modula\u010dn\u00e9ho vzoru v okol\u00ed sie\u0165ovej frekvencie) a v ka\u017edej situ\u00e1cii, ke\u010f by sa inak dva d\u00f4le\u017eit\u00e9 vrcholy zl\u00fa\u010dili do jednej rozmazanej \u0161muhy.<\/p>\n<h2>2. Pre\u010do je potrebn\u00e1 funkcia Zoom FFT<\/h2>\n<h3>Rozl\u00ed\u0161enie \u0161tandardnej FFT<\/h3>\n<p>Ka\u017ed\u00e1 be\u017en\u00e1 FFT sa riadi jedn\u00fdm nevyhnutn\u00fdm vz\u0165ahom:<\/p>\n<blockquote><p>Rozl\u00ed\u0161enie = F<sub>max<\/sub> \u00f7 Po\u010det riadkov.<\/p><\/blockquote>\n<p>Napr\u00edklad rozsah 0\u20131000 Hz s 800 \u010diarami d\u00e1va rozl\u00ed\u0161enie 1.25 Hz \u2014 a dva vrcholy bli\u017e\u0161ie ne\u017e 1.25 Hz jednoducho nemo\u017eno od seba odl\u00ed\u0161i\u0165. To je skuto\u010dn\u00fd probl\u00e9m pri elektrick\u00fdch poruch\u00e1ch, kde s\u00fa zauj\u00edmav\u00e9 postrann\u00e9 p\u00e1sma frekvencie prechodu p\u00f3lov \u010dasto len nieko\u013eko hertzov \u2014 niekedy sotva 1\u20132 Hz \u2014 od centr\u00e1lneho vrcholu.<\/p>\n<h3>V\u00fdhody a nev\u00fdhody met\u00f3dy hrubou silou<\/h3>\n<ul>\n<li><strong>Zn\u00ed\u017eenie F<sub>max<\/sub>:<\/strong> Zn\u00ed\u017eenie frekven\u010dn\u00e9ho rozsahu na 0\u2013100 Hz zvy\u0161uje rozl\u00ed\u0161enie na 0,125 Hz, av\u0161ak vylu\u010duje v\u0161etky vy\u0161\u0161ie frekvencie.<\/li>\n<li><strong>Zv\u00fd\u0161i\u0165 po\u010det riadkov:<\/strong> Hodnota 8000 riadkov tie\u017e dosahuje 0,125 Hz, je v\u0161ak n\u00e1ro\u010dn\u00e1 na v\u00fdpo\u010dtov\u00fd \u010das a pam\u00e4\u0165.<\/li>\n<li><strong>Zoom FFT:<\/strong> poskytuje vysok\u00e9 rozl\u00ed\u0161enie presne tam, kde je to potrebn\u00e9, a z\u00e1rove\u0148 zachov\u00e1va primeran\u00fa v\u00fdpo\u010dtov\u00fa n\u00e1ro\u010dnos\u0165 \u2013 to najlep\u0161ie z oboch svetov.<\/li>\n<\/ul>\n<p>Tieto kompromisy si m\u00f4\u017eete pred meran\u00edm prezrie\u0165 v bezplatnej verzii <a href=\"https:\/\/vibromera.eu\/sk\/calculators\/fft-resolution-calculator\/\">Kalkula\u010dka rozl\u00ed\u0161enia FFT<\/a>, \u010do priamo s\u00favis\u00ed s rozp\u00e4t\u00edm, po\u010dtom riadkov a rozl\u00ed\u0161en\u00edm.<\/p>\n<h2>3. Ako funguje FFT v programe Zoom<\/h2>\n<p>T\u00e1to technika je digit\u00e1lna &#8220;lupa&#8221;, ktor\u00e1 pozost\u00e1va z troch krokov spracovania sign\u00e1lu:<\/p>\n<ol>\n<li><strong>Vyberte p\u00e1smo:<\/strong> zvo\u013ete stredn\u00fa frekvenciu a \u0161\u00edrku p\u00e1sma, napr\u00edklad 100 Hz \u00b1 10 Hz.<\/li>\n<li><strong>Posun frekvencie:<\/strong> digit\u00e1lne prelo\u017ei\u0165 toto p\u00e1smo smerom k DC (z\u00e1kladn\u00e9mu p\u00e1smu), tak\u017ee oblas\u0165 z\u00e1ujmu sa nach\u00e1dza tam, kde je rozl\u00ed\u0161enie FFT&#8217;s prirodzene najvy\u0161\u0161ie.<\/li>\n<li><strong>Decimacia:<\/strong> zn\u00ed\u017ei\u0165 vzorkovaciu frekvenciu \u00famerne k z\u00fa\u017eenej \u0161\u00edrke p\u00e1sma.<\/li>\n<li><strong>V\u00fdpo\u010det FFT:<\/strong> vykonajte transform\u00e1ciu na sign\u00e1li so zn\u00ed\u017eenou vzorkovacou frekvenciou.<\/li>\n<li><strong>V\u00fdsledok:<\/strong> spektrum s vysok\u00fdm rozl\u00ed\u0161en\u00edm, ktor\u00e9 pokr\u00fdva iba zvolen\u00e9 \u00fazke p\u00e1smo.<\/li>\n<\/ol>\n<p>V\u00fdkon sa priamo \u00famerne men\u00ed s mierou pribl\u00ed\u017eenia: pribl\u00ed\u017eenie na desatinu celkov\u00e9ho rozsahu poskytuje desa\u0165n\u00e1sobne vy\u0161\u0161ie rozl\u00ed\u0161enie, tak\u017ee n\u00e1rast rozl\u00ed\u0161enia sa d\u00e1 vyjadri\u0165 jednoducho ako (celkov\u00fd rozsah \u00f7 rozsah pribl\u00ed\u017eenia). Prechod z rozsahu 0\u20131000 Hz s krokom 1 Hz na okno 95\u2013105 Hz s krokom 0,01 Hz predstavuje ston\u00e1sobn\u00fd n\u00e1rast.<\/p>\n<h2>4. Aplik\u00e1cie<\/h2>\n<h3>Detekcia por\u00fach ty\u010d\u00ed rotora motora<\/h3>\n<p>The classic zoom FFT job. Pole-pass sidebands (number of poles \u00d7 slip frequency) spaced only a few hertz from the 1\u00d7 peak are too close to resolve in a standard spectrum, so a zoom around 1\u00d7 <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/running-speed\/\">prev\u00e1dzkov\u00e1 r\u00fdchlos\u0165<\/a> pri frekvencii 0,1 Hz alebo vy\u0161\u0161ej ich jasne oddel\u00ed a odhal\u00ed <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/broken-rotor-bars\/\">zlomen\u00e9 rotorov\u00e9 ty\u010de<\/a>. Amplit\u00fada postrann\u00e9ho p\u00e1sma v porovnan\u00ed s vrcholom 1\u00d7 ud\u00e1va, ko\u013eko pruhov je preru\u0161en\u00fdch.<\/p>\n<h3>Diagnostika prevodovky<\/h3>\n<p>Pribl\u00ed\u017eenie <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/gear-mesh-frequency\/\">frekvencia z\u00e1beru ozuben\u00fdch kolies<\/a> na ur\u010denie bo\u010dn\u00fdch p\u00e1siem rozlo\u017een\u00fdch pod\u013ea ot\u00e1\u010dok hriade\u013ea, identifikova\u0165 <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/hunting-tooth-frequency\/\">frekvencia lovu zubov<\/a> vzory a rozli\u0161ova\u0165 postrann\u00e9 p\u00e1sma pastorku od postrann\u00fdch p\u00e1siem ozuben\u00e9ho kolesa. Vo\u013en\u00fd <a href=\"https:\/\/vibromera.eu\/sk\/calculators\/gear-mesh-frequency\/\">Kalkul\u00e1tor frekvencie z\u00e1beru ozuben\u00fdch kolies<\/a> v\u00e1m najprv uk\u00e1\u017ee, kde m\u00e1te zaostri\u0165.<\/p>\n<h3>Anal\u00fdza lo\u017e\u00edsk<\/h3>\n<p>Pribl\u00ed\u017eenie <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/bearing-fault-frequencies\/\">frekvencie por\u00fach lo\u017e\u00edsk<\/a> ur\u010di\u0165 \u0161trukt\u00faru ich postrann\u00e9ho p\u00e1sma, overi\u0165 presn\u00fa frekvenciu poruchy vo\u010di vypo\u010d\u00edtanej hodnote a zisti\u0165 typ modul\u00e1cie, ktor\u00fd <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/envelope-analysis\/\">anal\u00fdza ob\u00e1lky<\/a> by inak niesol.<\/p>\n<h3>Anal\u00fdza elektrickej frekvencie<\/h3>\n<p>Pribl\u00ed\u017ete oblas\u0165 okolo sie\u0165ovej frekvencie alebo 2\u00d7 sie\u0165ovej frekvencie, aby sa rozl\u00ed\u0161ili postrann\u00e9 p\u00e1sma rozost\u00fapen\u00e9 o <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/pole-pass-frequency\/\">frekvencia prechodu p\u00f3lov<\/a> vibr\u00e1ci\u00e1ch s\u00favisiacich s pr\u00fadom a presne zmerajte toto rozost\u00fapenie.<\/p>\n<h3>\u0160t\u00fadie kritickej r\u00fdchlosti<\/h3>\n<p>Zv\u00e4\u010d\u0161enie okolo predpokladanej <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/natural-frequency\/\">prirodzen\u00e1 frekvencia<\/a> opravi\u0165 <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/resonance\/\">rezonancia<\/a> presne a zmera\u0165 \u0161\u00edrku rezonan\u010dn\u00e9ho p\u00edku, z \u010doho <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/damping\/\">tlmenie<\/a> je mo\u017en\u00e9 odhadn\u00fa\u0165.<\/p>\n<h2>5. Prev\u00e1dzkov\u00fd postup<\/h2>\n<h3>Nastavenie<\/h3>\n<ol>\n<li><strong>Najprv spustite \u0161tandardn\u00fa FFT<\/strong> ak chcete n\u00e1js\u0165 po\u017eadovan\u00fa oblas\u0165 \u2013 pribl\u00ed\u017eenie nikdy nie je prv\u00fdm krokom naslepo.<\/li>\n<li><strong>Vyberte stred<\/strong> frekvencia pribl\u00ed\u017eenia.<\/li>\n<li><strong>Vyberte rozp\u00e4tie<\/strong> \u2014 u\u017e\u0161\u00ed znamen\u00e1 vy\u0161\u0161ie rozl\u00ed\u0161enie.<\/li>\n<li><strong>Nastavte po\u010det riadkov<\/strong> (zvy\u010dajne sa zhoduje so \u0161tandardnou FFT).<\/li>\n<li><strong>Z\u00edska\u0165<\/strong> a nech pr\u00edstroj s\u00e1m nastav\u00ed pribl\u00ed\u017eenie.<\/li>\n<\/ol>\n<h3>Typick\u00e9 nastavenia<\/h3>\n<ul>\n<li><strong>Bo\u010dn\u00e9 p\u00e1sma motora:<\/strong> stred pri 1\u00d7 (30 Hz), rozsah \u00b110 Hz, 800 riadkov \u2192 rozl\u00ed\u0161enie 0,025 Hz.<\/li>\n<li><strong>Oko prevodovky:<\/strong> stred na GMF (600 Hz), rozsah \u00b150 Hz, 1600 \u010diar \u2192 rozl\u00ed\u0161enie 0,0625 Hz.<\/li>\n<li><strong>Porucha lo\u017eiska:<\/strong> centrum na adrese <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/bpfo\/\">BPFO<\/a> (150 Hz), rozsah \u00b125 Hz, 800 riadkov \u2192 rozl\u00ed\u0161enie 0,0625 Hz.<\/li>\n<\/ul>\n<h2>6. V\u00fdhody<\/h2>\n<ul>\n<li><strong>Vysok\u00e9 rozl\u00ed\u0161enie:<\/strong> 10\u2013100-kr\u00e1t jemnej\u0161ie ako \u0161tandardn\u00e1 FFT, \u010d\u00edm odde\u013euje p\u00edky, ktor\u00e9 by sa inak nedali rozl\u00ed\u0161i\u0165, a odha\u013euje diagnostick\u00e9 detaily.<\/li>\n<li><strong>V\u00fdpo\u010dtov\u00e1 efekt\u00edvnos\u0165:<\/strong> ove\u013ea lacnej\u0161ie, ako zvy\u0161ova\u0165 po\u010det riadkov v celom spektre \u2013 r\u00fdchlej\u0161ie a s men\u0161ou pam\u00e4\u0165ovou n\u00e1ro\u010dnos\u0165ou.<\/li>\n<li><strong>Presn\u00e9 meranie frekvencie:<\/strong> ur\u010d\u00ed presn\u00fa \u0161pi\u010dkov\u00fa frekvenciu, aby sa mohla porovna\u0165 s teoretick\u00fdm v\u00fdpo\u010dtom, \u010d\u00edm sa potvrd\u00ed alebo vyvr\u00e1ti predpoklad <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/diagnosis\/\">diagn\u00f3za<\/a>.<\/li>\n<\/ul>\n<h2>7. Obmedzenia<\/h2>\n<ul>\n<li><strong>Iba \u00fazke p\u00e1smo:<\/strong> zobrazuje len vybran\u00fa oblas\u0165 a ignoruje v\u0161etko mimo nej, tak\u017ee mus\u00edte u\u017e pribli\u017ene vedie\u0165, kde h\u013eada\u0165 \u2013 preto najprv preh\u013ead pomocou \u0161tandardnej FFT.<\/li>\n<li><strong>Po\u017eadovan\u00e9 znalosti pou\u017e\u00edvate\u013ea:<\/strong> V\u00fdber vhodn\u00e9ho stredu a rozp\u00e4tia si vy\u017eaduje pochopenie toho, \u010do vlastne h\u013ead\u00e1te, \u010do rob\u00ed zoom FFT nevhodnou met\u00f3dou pre v\u0161eobecn\u00e9 preh\u013ead\u00e1vanie a n\u00e1ro\u010dnej\u0161ou ne\u017e be\u017en\u00fa FFT.<\/li>\n<li><strong>\u010casov\u00e1 n\u00e1ro\u010dnos\u0165:<\/strong> Ide o dodato\u010dn\u00e9 meranie nad r\u00e1mec \u0161tandardn\u00e9ho merania, pri\u010dom vynalo\u017een\u00e9 \u00fasilie na nastavenie a v\u00fdber parametrov je opodstatnen\u00e9 sk\u00f4r v pr\u00edpade kritick\u00fdch strojov alebo u\u017e potvrden\u00fdch probl\u00e9mov ne\u017e pri be\u017en\u00fdch kontrol\u00e1ch.<\/li>\n<\/ul>\n<h2>8. Zv\u00e4\u010d\u0161enie FFT v ter\u00e9ne<\/h2>\n<p>Hoci najpodrobnej\u0161ie anal\u00fdzy sa \u010dasto vykon\u00e1vaj\u00fa len na kritick\u00fdch zariadeniach s trvalou in\u0161tal\u00e1ciou merac\u00edch pr\u00edstrojov, ten ist\u00fd princ\u00edp m\u00e1 neocenite\u013en\u00fa hodnotu aj pri prenosnej diagnostike. Po rutinnom <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/vyvazovanie-pola\/\">vyv\u00e1\u017eenie na mieste<\/a> prieskum, dvojkan\u00e1lov\u00fd analyz\u00e1tor, ako napr\u00edklad <a href=\"https:\/\/vibromera.eu\/sk\/produkt\/balanset-1\/\">Balanset-1A<\/a> umo\u017e\u0148uje in\u017einierovi zv\u00e4\u010d\u0161i\u0165 podozriv\u00fa oblas\u0165 spektra \u2013 napr\u00edklad v okol\u00ed 1\u00d7 prev\u00e1dzkovej frekvencie \u2013 aby sa uistil, \u010di je zv\u00fd\u0161en\u00fd p\u00edk \u010dist\u00fd <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/imbalance\/\">nevyv\u00e1\u017eenos\u0165<\/a> alebo s\u00fabor elektrick\u00fdch postrann\u00fdch p\u00e1siem, ktor\u00e9 sa pod n\u00edm skr\u00fdvaj\u00fa. Pr\u00e1ve toto rozl\u00ed\u0161enie rozhoduje o tom, \u010di je potrebn\u00e1 korekcia vyv\u00e1\u017eenia alebo oprava motora, a preto je schopnos\u0165 rozl\u00ed\u0161i\u0165 bl\u00edzko seba le\u017eiace \u0161pi\u010dky priamo na mieste tak\u00e1 u\u017eito\u010dn\u00e1.<\/p>\n<p>Stru\u010dne povedan\u00e9, funkcia Zoom FFT je v\u00fdkonn\u00fd spektr\u00e1lny n\u00e1stroj, ktor\u00fd poskytuje rozl\u00ed\u0161enie potrebn\u00e9 na oddelenie tesne susediacich zlo\u017eiek sp\u00f4soben\u00fdch elektrick\u00fdmi poruchami motora, vadami prevodovky a probl\u00e9mami s lo\u017eiskami. Schopnos\u0165 vedie\u0165, kedy tento n\u00e1stroj pou\u017ei\u0165, ako zvoli\u0165 stred a rozsah a ako interpretova\u0165 v\u00fdsledn\u00e9 spektrum s vysok\u00fdm rozl\u00ed\u0161en\u00edm, je charakteristick\u00fdm znakom pokro\u010dil\u00fdch <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/vibration-analysis\/\">anal\u00fdza vibr\u00e1ci\u00ed<\/a> a podrobn\u00e1 diagnostika por\u00fach v zlo\u017eit\u00fdch strojov\u00fdch zariadeniach.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/sk\/glossary\/\">\u2190 Sp\u00e4\u0165 na hlavn\u00fd index<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Z\u00edskajte inform\u00e1cie o zoom FFT, technike spektr\u00e1lnej anal\u00fdzy poskytuj\u00facej vysok\u00e9 frekven\u010dn\u00e9 rozl\u00ed\u0161enie vo vybran\u00fdch \u00fazkych p\u00e1smach, ktor\u00e1 je nevyhnutn\u00e1 pre rozl\u00ed\u0161enie bl\u00edzko rozmiestnen\u00fdch vrcholov a anal\u00fdzu postrann\u00fdch p\u00e1siem.<\/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\/sk\/wp-json\/wp\/v2\/glossary\/313","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/glossary\/313\/revisions"}],"predecessor-version":[{"id":102165,"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/glossary\/313\/revisions\/102165"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/media?parent=313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/categories?post=313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/tags?post=313"}],"curies":[{"name":"pracovn\u00fd list","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}