{"id":93,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/cross-spectrum\/"},"modified":"2026-05-23T22:41:17","modified_gmt":"2026-05-23T22:41:17","slug":"cross-spectrum","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/cs\/glossary\/cross-spectrum\/","title":{"rendered":"Co je to k\u0159\u00ed\u017eov\u00e9 spektrum? Dvoukan\u00e1lov\u00e1 frekven\u010dn\u00ed anal\u00fdza"},"content":{"rendered":"<h1>Pochopen\u00ed k\u0159\u00ed\u017eov\u00e9ho spektra<\/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\/93?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\/93?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\/93?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\/93?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\/93?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\/93?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\/93?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\/93?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\/93?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\/93?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\/93?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\/93?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\/93?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\/93?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>K\u0159\u00ed\u017eov\u00e9 spektrum<\/strong> \u2014 naz\u00fdvan\u00e1 tak\u00e9 k\u0159\u00ed\u017eov\u00e9 v\u00fdkonov\u00e9 spektrum nebo k\u0159\u00ed\u017eov\u00e1 spektr\u00e1ln\u00ed hustota \u2014 je frekven\u010dn\u00ed reprezentace vztahu mezi dv\u011bma sou\u010dasn\u011b m\u011b\u0159en\u00fdmi <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/vibration\/\">vibrace<\/a> sign\u00e1l\u016f. Vypo\u010d\u00edt\u00e1 se vyn\u00e1soben\u00edm <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/fft\/\">Rychl\u00e1 Fourierova transformace (FFT)<\/a> jednoho sign\u00e1lu komplexn\u00edm konjug\u00e1tem FFT druh\u00e9ho. Kde <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/auto-spectrum\/\">autospektrum<\/a> zobrazuje frekven\u010dn\u00ed slo\u017een\u00ed jednoho kan\u00e1lu, zat\u00edmco k\u0159\u00ed\u017eov\u00e9 spektrum ukazuje, kter\u00e9 frekvence jsou <em>common<\/em> na oba sign\u00e1ly a na <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/phase\/\">f\u00e1ze<\/a> vz\u00e1jemn\u00fd vztah mezi nimi p\u0159i ka\u017ed\u00e9 frekvenci.<\/p>\n<p>D\u00edky tomu se k\u0159\u00ed\u017eov\u00e9 spektrum st\u00e1v\u00e1 matematick\u00fdm z\u00e1kladem pokro\u010dil\u00e9 v\u00edcekan\u00e1lov\u00e9 anal\u00fdzy: <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/transfer-function\/\">p\u0159enosov\u00e1 funkce<\/a> estimation, <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/coherence\/\">koherence<\/a> anal\u00fdza a tvar provozn\u00ed v\u00fdchylky (<a href=\"https:\/\/vibromera.eu\/cs\/glossary\/ods-analysis\/\">ODS<\/a>) se na n\u011bm zakl\u00e1daj\u00ed. V praxi to in\u017een\u00fdr\u016fm umo\u017e\u0148uje sledovat, jak se vibrace \u0161\u00ed\u0159\u00ed konstrukc\u00ed, a odhalit p\u0159\u00ed\u010dinn\u00e9 souvislosti mezi jednotliv\u00fdmi m\u011b\u0159ic\u00edmi body \u2013 co\u017e je n\u011bco, co jednokan\u00e1lov\u00fd <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/spectrum\/\">spektrum<\/a> to jednodu\u0161e nedok\u00e1\u017ee.<\/p>\n<h2>1. Matematick\u00e1 definice<\/h2>\n<h3>V\u00fdpo\u010det<\/h3>\n<p>Definuj\u00edc\u00ed vztah je kompaktn\u00ed:<\/p>\n<blockquote>\n<p><strong>G<sub>xy<\/sub>(f) = X(f) \u00d7 Y*(f)<\/strong><\/p>\n<\/blockquote>\n<ul>\n<li>X(f) je FFT sign\u00e1lu x(t).<\/li>\n<li>Y*(f) je komplexn\u00ed konjug\u00e1t FFT sign\u00e1lu y(t).<\/li>\n<li>V\u00fdsledek je komplexn\u00ed \u010d\u00edslo, kter\u00e9 zahrnuje jak amplitudu, tak f\u00e1zi.<\/li>\n<\/ul>\n<h3>Sou\u010d\u00e1sti<\/h3>\n<ul>\n<li><strong>Velikost \u2014 |G<sub>xy<\/sub>(f)|:<\/strong> ukazuje, jak siln\u00e1 je spole\u010dn\u00e1 frekven\u010dn\u00ed slo\u017eka obou sign\u00e1l\u016f.<\/li>\n<li><strong>Phase \u2014 \u2220G<sub>xy<\/sub>(f):<\/strong> ukazuje f\u00e1zov\u00fd rozd\u00edl mezi sign\u00e1ly p\u0159i jednotliv\u00fdch frekvenc\u00edch.<\/li>\n<li><strong>Real part:<\/strong> cos-spektr\u00e1ln\u00ed komponenta, neboli souph\u00e1sov\u00e1 komponenta.<\/li>\n<li><strong>Imagin\u00e1rn\u00ed \u010d\u00e1st:<\/strong> kvadraturn\u00ed slo\u017eka, tj. slo\u017eka s f\u00e1zov\u00fdm posunem o 90\u00b0.<\/li>\n<\/ul>\n<h2>2. Properties<\/h2>\n<p>T\u0159i vlastnosti odli\u0161uj\u00ed k\u0159\u00ed\u017eov\u00e9 spektrum od zn\u00e1m\u00e9ho automatick\u00e9ho spektra a ka\u017ed\u00e1 z nich m\u00e1 p\u0159i interpretaci sv\u016fj v\u00fdznam.<\/p>\n<h3>Je to komplexn\u00ed \u010d\u00edslo<\/h3>\n<ul>\n<li>Na rozd\u00edl od automatick\u00e9ho spektra, kter\u00e9 je pouze re\u00e1ln\u00e9, je k\u0159\u00ed\u017eov\u00e9 spektrum komplexn\u00ed.<\/li>\n<li>Obsahuje tedy jak amplitudu, tak f\u00e1zi.<\/li>\n<li>Pr\u00e1v\u011b v t\u011bchto f\u00e1zov\u00fdch informac\u00edch spo\u010d\u00edv\u00e1 podstata v\u011bci \u2013 pr\u00e1v\u011b ony odhaluj\u00ed, jak se oba sign\u00e1ly vz\u00e1jemn\u011b \u010dasov\u011b ovliv\u0148uj\u00ed.<\/li>\n<\/ul>\n<h3>Nen\u00ed to symetrick\u00e9<\/h3>\n<ul>\n<li>Obecn\u011b G<sub>xy<\/sub>(f) \u2260 G<sub>yx<\/sub>(f).<\/li>\n<li>Po\u0159ad\u00ed je d\u016fle\u017eit\u00e9 \u2013 v\u00fdsledek se li\u0161\u00ed podle toho, kter\u00fd sign\u00e1l pou\u017eijete jako referen\u010dn\u00ed.<\/li>\n<li>Formally, G<sub>yx<\/sub>(f) je komplexn\u00ed konjug\u00e1t G<sub>xy<\/sub>(f), tak\u017ee f\u00e1ze pouze zm\u011bn\u00ed znam\u00e9nko.<\/li>\n<\/ul>\n<h3>Je t\u0159eba prov\u00e9st pr\u016fm\u011brov\u00e1n\u00ed<\/h3>\n<ul>\n<li>Jedin\u00e9 k\u0159\u00ed\u017eov\u00e9 spektrum je zat\u00ed\u017een\u00e9 \u0161umem a nespolehliv\u00e9.<\/li>\n<li>Pr\u016fm\u011brov\u00e1n\u00ed mnoha k\u0159\u00ed\u017eov\u00fdch spekter vede ke stabiln\u00edmu odhadu.<\/li>\n<li>Nekorelovan\u00e9 slo\u017eky \u0161umu se v pr\u016fm\u011bru vyrovn\u00e1vaj\u00ed na nulu, proto\u017ee jejich f\u00e1ze se mezi jednotliv\u00fdmi bloky m\u011bn\u00ed n\u00e1hodn\u011b.<\/li>\n<li>Skute\u010dn\u011b koreluj\u00edc\u00ed slo\u017eky si zachov\u00e1vaj\u00ed stejnou f\u00e1zi a vz\u00e1jemn\u011b se posiluj\u00ed \u2013 a pr\u00e1v\u011b proto pr\u016fm\u011brov\u00e1n\u00ed vede ke zp\u0159esn\u011bn\u00ed odhadu.<\/li>\n<\/ul>\n<h2>3. Aplikace<\/h2>\n<h3>V\u00fdpo\u010det p\u0159enosov\u00e9 funkce<\/h3>\n<p>Toto je bezpochyby nejd\u016fle\u017eit\u011bj\u0161\u00ed aplikace:<\/p>\n<blockquote>\n<p><strong>H(f) = G<sub>xy<\/sub>(f) \/ G<sub>xx<\/sub>(f)<\/strong><\/p>\n<\/blockquote>\n<ul>\n<li>Zde x p\u0159edstavuje vstup a y v\u00fdstup.<\/li>\n<li>V\u00fdsledek ukazuje, jak syst\u00e9m reaguje na budic\u00ed sign\u00e1l.<\/li>\n<li>Jeho velikost ud\u00e1v\u00e1 zes\u00edlen\u00ed nebo \u00fatlum na ka\u017ed\u00e9 frekvenci.<\/li>\n<li>Jeho f\u00e1ze vykazuje \u010dasov\u00e9 zpo\u017ed\u011bn\u00ed a <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/resonance\/\">rezonance<\/a> behaviour.<\/li>\n<li>Jedn\u00e1 se o z\u00e1kladn\u00ed m\u011b\u0159\u00edtko <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/modal-analysis\/\">mod\u00e1ln\u00ed anal\u00fdza<\/a> a struktur\u00e1ln\u00ed dynamika, \u00fazce souvisej\u00edc\u00ed s <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/frequency-response-function\/\">funkce frekven\u010dn\u00ed odezvy<\/a>.<\/li>\n<\/ul>\n<h3>V\u00fdpo\u010det koherence<\/h3>\n<ul>\n<li>Koherence se definuje jako <strong>|G<sub>xy<\/sub>|\u00b2 \/ (G<sub>xx<\/sub> \u00d7 G<sub>rr<\/sub>)<\/strong>.<\/li>\n<li>M\u011b\u0159\u00ed korelaci mezi t\u011bmito dv\u011bma sign\u00e1ly na ka\u017ed\u00e9 frekvenci.<\/li>\n<li>Jeho rozsah je od 0 do 1: hodnota 1 znamen\u00e1 dokonalou korelaci, zat\u00edmco 0 znamen\u00e1, \u017ee \u017e\u00e1dn\u00e1 korelace neexistuje.<\/li>\n<li>Ov\u011b\u0159uje kvalitu m\u011b\u0159en\u00ed a upozor\u0148uje na m\u00edsta, kde je v\u00fdsledek zkreslen \u0161umem \u2013 co\u017e je nezbytn\u00e9 p\u0159i <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/bump-test\/\">n\u00e1razov\u00fd test<\/a> nebo mod\u00e1ln\u00ed pr\u016fzkum.<\/li>\n<\/ul>\n<h3>Stanoven\u00ed f\u00e1zov\u00e9ho vztahu<\/h3>\n<ul>\n<li>F\u00e1ze z k\u0159\u00ed\u017eov\u00e9ho spektra p\u0159\u00edmo odhaluje \u010dasov\u00e9 zpo\u017ed\u011bn\u00ed nebo rezonanci.<\/li>\n<li><strong>0\u00b0:<\/strong> sign\u00e1ly jsou ve f\u00e1zi a pohybuj\u00ed se spole\u010dn\u011b.<\/li>\n<li><strong>180\u00b0:<\/strong> sign\u00e1ly jsou mimo f\u00e1zi, pohybuj\u00ed se v opa\u010dn\u00e9m sm\u011bru.<\/li>\n<li><strong>90\u00b0:<\/strong> kvadratura, co\u017e nazna\u010duje rezonanci nebo \u010dist\u00e9 \u010dasov\u00e9 zpo\u017ed\u011bn\u00ed.<\/li>\n<li>To je diagnostick\u00fd z\u00e1klad pro <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/mode-shape\/\">vlastn\u00ed tvary<\/a> a pro sledov\u00e1n\u00ed p\u0159enosu vibrac\u00ed.<\/li>\n<\/ul>\n<h3>Potla\u010den\u00ed souhlasn\u00e9ho sign\u00e1lu<\/h3>\n<ul>\n<li>K\u0159\u00ed\u017eov\u00e9 spektrum izoluje frekven\u010dn\u00ed slo\u017eky, kter\u00e9 jsou spole\u010dn\u00e9 pro oba kan\u00e1ly.<\/li>\n<li>Nekorelovan\u00fd \u0161um se potla\u010duje pomoc\u00ed pr\u016fm\u011brov\u00e1n\u00ed.<\/li>\n<li>Skute\u010dn\u00e9 spole\u010dn\u00e9 slo\u017eky sign\u00e1lu vystupuj\u00ed z pozad\u00ed.<\/li>\n<li>Praktick\u00fdm p\u0159\u00ednosem je lep\u0161\u00ed pom\u011br sign\u00e1lu k \u0161umu.<\/li>\n<\/ul>\n<h2>4. Praktick\u00e9 sc\u00e9n\u00e1\u0159e m\u011b\u0159en\u00ed<\/h2>\n<p>Jakmile se dva senzory p\u0159ipoj\u00ed ke skute\u010dn\u00e9mu stroji, abstraktn\u00ed p\u0159edstava se st\u00e1v\u00e1 konkr\u00e9tn\u00ed. T\u0159i p\u0159\u00edklady z praxe dokazuj\u00ed jejich u\u017eite\u010dnost.<\/p>\n<h3>Porovn\u00e1n\u00ed lo\u017eisek<\/h3>\n<ul>\n<li>Sign\u00e1l X: vibrace u lo\u017eiska 1. Sign\u00e1l Y: vibrace u lo\u017eiska 2.<\/li>\n<li>K\u0159\u00ed\u017eov\u00e9 spektrum ukazuje frekvence, kter\u00e9 ovliv\u0148uj\u00ed ob\u011b lo\u017eiska sou\u010dasn\u011b.<\/li>\n<li>T\u00edm se odli\u0161uje obecn\u00fd probl\u00e9m souvisej\u00edc\u00ed s rotorem od probl\u00e9mu, kter\u00fd se t\u00fdk\u00e1 pouze jednoho <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/bearing-defects\/\">lo\u017eisko<\/a>.<\/li>\n<\/ul>\n<h3>Anal\u00fdza vstup\u016f a v\u00fdstup\u016f<\/h3>\n<ul>\n<li>Sign\u00e1l X: s\u00edla nebo vibrace na vstupu \u2013 spojka nebo lo\u017eisko pohonu.<\/li>\n<li>Sign\u00e1l Y: odezva na v\u00fdstupu \u2013 lo\u017eisko poh\u00e1n\u011bn\u00e9ho za\u0159\u00edzen\u00ed.<\/li>\n<li>K\u0159\u00ed\u017eov\u00e9 spektrum ukazuje p\u0159enosov\u00e9 charakteristiky mezi nimi.<\/li>\n<li>Odvozen\u00e1 p\u0159enosov\u00e1 funkce pak p\u0159esn\u011b kvantifikuje, jak se vibrace \u0161\u00ed\u0159\u00ed p\u0159es <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/coupling-defects\/\">spojka<\/a>.<\/li>\n<\/ul>\n<h3>Struktur\u00e1ln\u00ed p\u0159enos<\/h3>\n<ul>\n<li>Sign\u00e1l X: vibrace lo\u017eiskov\u00e9ho t\u011blesa. Sign\u00e1l Y: vibrace z\u00e1klad\u016f nebo r\u00e1mu.<\/li>\n<li>Spektrum ukazuje, kter\u00e9 frekvence se skute\u010dn\u011b dost\u00e1vaj\u00ed do struktury.<\/li>\n<li>To slou\u017e\u00ed jako vod\u00edtko p\u0159i rozhodov\u00e1n\u00ed o izolaci \u010di zpevn\u011bn\u00ed a p\u0159\u00edmo souvis\u00ed s <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/foundation-stiffness\/\">tuhost z\u00e1klad\u016f<\/a> a <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/structural-resonance\/\">struktur\u00e1ln\u00ed rezonance<\/a> probl\u00e9m\u016f.<\/li>\n<\/ul>\n<h2>5. Interpretace k\u0159\u00ed\u017eov\u00e9ho spektra<\/h2>\n<h3>Vysok\u00e1 amplituda p\u0159i dan\u00e9 frekvenci<\/h3>\n<ul>\n<li>Nazna\u010duje silnou korelaci mezi sign\u00e1ly na t\u00e9to frekvenci.<\/li>\n<li>Nazna\u010duje spole\u010dn\u00fd zdroj nebo silnou prov\u00e1zanost mezi t\u011bmito dv\u011bma m\u00edsty.<\/li>\n<li>Tato slo\u017eka je skute\u010dn\u011b p\u0159\u00edtomna v obou sign\u00e1lech.<\/li>\n<\/ul>\n<h3>N\u00edzk\u00e1 amplituda p\u0159i dan\u00e9 frekvenci<\/h3>\n<ul>\n<li>Nazna\u010duje malou korelaci \u2013 slabou vazbu nebo \u017e\u00e1dn\u00fd spole\u010dn\u00fd zdroj.<\/li>\n<li>Tato slo\u017eka se m\u016f\u017ee vyskytovat v jednom sign\u00e1lu, ale ne v druh\u00e9m.<\/li>\n<li>Nebo m\u016f\u017ee j\u00edt prost\u011b o nesouvisej\u00edc\u00ed \u0161um z r\u016fzn\u00fdch zdroj\u016f.<\/li>\n<\/ul>\n<h3>Informace o f\u00e1zi<\/h3>\n<ul>\n<li><strong>0\u00b0:<\/strong> sign\u00e1ly se pohybuj\u00ed spole\u010dn\u011b \u2013 jde o tuh\u00e9 spojen\u00ed nebo provoz pod rezonan\u010dn\u00ed frekvenc\u00ed.<\/li>\n<li><strong>180\u00b0:<\/strong> sign\u00e1ly se pohybuj\u00ed opa\u010dn\u00fdm sm\u011brem \u2013 nad rezonanc\u00ed nebo p\u0159es osu symetrie.<\/li>\n<li><strong>90\u00b0:<\/strong> kvadratura \u2013 p\u0159i rezonanci nebo vypl\u00fdvaj\u00edc\u00ed z ur\u010dit\u00e9 geometrie.<\/li>\n<li><strong>F\u00e1ze z\u00e1visl\u00e1 na frekvenci:<\/strong> Zp\u016fsob, jak\u00fdm se f\u00e1ze m\u011bn\u00ed s frekvenc\u00ed, odhaluje dynamick\u00e9 chov\u00e1n\u00ed struktury.<\/li>\n<\/ul>\n<h2>6. Pokro\u010dil\u00e9 aplikace<\/h2>\n<h3>Anal\u00fdza v\u00edce vstup\u016f a v\u00fdstup\u016f<\/h3>\n<ul>\n<li>N\u011bkolik referen\u010dn\u00edch sign\u00e1l\u016f je sp\u00e1rov\u00e1no s n\u011bkolika odezvov\u00fdmi sign\u00e1ly.<\/li>\n<li>V\u00fdsledkem je \u00fapln\u00e1 matice k\u0159\u00ed\u017eov\u00fdch spekter.<\/li>\n<li>Zji\u0161\u0165uje v\u00edce soub\u011b\u017en\u00fdch p\u0159enosov\u00fdch cest.<\/li>\n<li>Takto se vyzna\u010duj\u00ed skute\u010dn\u011b komplexn\u00ed syst\u00e9my.<\/li>\n<\/ul>\n<h3>Provozn\u00ed tvary pr\u016fhybu<\/h3>\n<ul>\n<li>M\u011b\u0159en\u00ed k\u0159\u00ed\u017eov\u00fdch spekter se prov\u00e1d\u00ed mezi mnoha m\u011b\u0159ic\u00edmi body rozm\u00edst\u011bn\u00fdmi kolem stroje.<\/li>\n<li>Jejich f\u00e1zov\u00e9 vztahy ur\u010duj\u00ed pr\u016fb\u011bh vych\u00fdlen\u00ed.<\/li>\n<li>Pohyb cel\u00e9 konstrukce lze pot\u00e9 zn\u00e1zornit a animovat.<\/li>\n<li>Ve v\u00fdsledku jasn\u011b vynikaj\u00ed rezonan\u010dn\u00ed m\u00f3dy.<\/li>\n<\/ul>\n<h2>7. K\u0159\u00ed\u017eov\u00e9 spektrum p\u0159i poln\u00edm vyva\u017eov\u00e1n\u00ed<\/h2>\n<p>A\u010dkoli se pojem \"cross-spectrum\" nej\u010dast\u011bji spojuje s mod\u00e1ln\u00ed a struktur\u00e1ln\u00ed anal\u00fdzou, stejn\u00e1 matematika dvou kan\u00e1l\u016f je z\u00e1kladem i ka\u017edodenn\u00edho <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/vyrovnavani-poli\/\">vyva\u017eov\u00e1n\u00ed na m\u00edst\u011b<\/a>. P\u0159enosn\u00fd dvoukan\u00e1lov\u00fd p\u0159\u00edstroj, jako je nap\u0159\u00edklad <a href=\"https:\/\/vibromera.eu\/cs\/produkt\/balanset-1\/\">Balanset-1A<\/a> zaznamen\u00e1v\u00e1 vibrace sou\u010dasn\u011b ve dvou rovin\u00e1ch lo\u017eiska a ob\u011b sn\u00edm\u00e1 v souvislosti s impulzem ot\u00e1\u010dkom\u011bru, kter\u00fd se vyskytuje jednou za ot\u00e1\u010dku, tak\u017ee dok\u00e1\u017ee ur\u010dit amplitudu a f\u00e1zi slo\u017eky 1\u00d7 v ka\u017ed\u00e9 rovin\u011b a vypo\u010d\u00edtat vz\u00e1jemn\u00e9 vazby <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/influence-coefficient\/\">koeficienty vlivu<\/a> kter\u00e9 spojuj\u00ed zat\u00ed\u017een\u00ed v jedn\u00e9 rovin\u011b s odezvou v druh\u00e9. Tento dvoukan\u00e1lov\u00fd vztah zalo\u017een\u00fd na f\u00e1zov\u00e9m posunu p\u0159edstavuje koncep\u010dn\u011b k\u0159\u00ed\u017eov\u00e9 spektrum zam\u011b\u0159en\u00e9 na rychlost b\u011bhu \u2013 a pr\u00e1v\u011b to je z\u00e1kladem spr\u00e1vn\u00e9ho dvourovinn\u00e9ho <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/dynamic-balancing\/\">dynamick\u00e9 vyva\u017eov\u00e1n\u00ed<\/a> na smontovan\u00e9m stroji.<\/p>\n<p>Stru\u010dn\u011b \u0159e\u010deno, k\u0159\u00ed\u017eov\u00e9 spektrum roz\u0161i\u0159uje frekven\u010dn\u00ed anal\u00fdzu z jednoho kan\u00e1lu na v\u00edce kan\u00e1l\u016f a odhaluje vztahy mezi sign\u00e1ly, kter\u00e9 umo\u017e\u0148uj\u00ed v\u00fdpo\u010det p\u0159enosov\u00e9 funkce, ov\u011b\u0159en\u00ed koherence a pochopen\u00ed toho, jak se vibrace \u0161\u00ed\u0159\u00ed strojem a jeho podp\u011brami. A\u010dkoli je jeho pou\u017eit\u00ed n\u00e1ro\u010dn\u011bj\u0161\u00ed ne\u017e u automatick\u00e9ho spektra, je p\u0159esto nezbytn\u00e9 pro mod\u00e1ln\u00ed testov\u00e1n\u00ed, struktur\u00e1ln\u00ed dynamiku a jakoukoli sofistikovanou diagnostiku, kter\u00e1 se op\u00edr\u00e1 o v\u00edcebodov\u00e1 m\u011b\u0159en\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 k\u0159\u00ed\u017eovou spektr\u00e1ln\u00ed a frekven\u010dn\u00ed anal\u00fdzou, kter\u00e1 vztahuje dva vibra\u010dn\u00ed sign\u00e1ly a ukazuje spole\u010dn\u00fd frekven\u010dn\u00ed obsah a f\u00e1zov\u00e9 vztahy, co\u017e je nezbytn\u00e9 pro anal\u00fdzu p\u0159enosov\u00e9 funkce a koherence.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-93","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/glossary\/93","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":1,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/glossary\/93\/revisions"}],"predecessor-version":[{"id":101329,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/glossary\/93\/revisions\/101329"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/media?parent=93"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/categories?post=93"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/tags?post=93"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}