{"id":99,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/demodulation\/"},"modified":"2026-05-23T22:18:01","modified_gmt":"2026-05-23T22:18:01","slug":"demodulation","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/sk\/glossary\/demodulation\/","title":{"rendered":"\u010co je demodul\u00e1cia vo vibra\u010dnej anal\u00fdze?"},"content":{"rendered":"<h1>Pochopenie demodul\u00e1cie (anal\u00fdza ob\u00e1lky)<\/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\/99?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\/99?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\/99?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\/99?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\/99?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\/99?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\/99?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\/99?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\/99?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\/99?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\/99?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\/99?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\/99?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\/99?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>Demodul\u00e1cia<\/strong> je technika spracovania sign\u00e1lu pou\u017e\u00edvan\u00e1 v <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/vibration-analysis\/\">anal\u00fdza vibr\u00e1ci\u00ed<\/a> na detekciu opakovan\u00fdch n\u00edzkofrekven\u010dn\u00fdch n\u00e1razov, ktor\u00e9 s\u00fa v podstate \u201eskryt\u00e9\u201c vo vysokofrekven\u010dn\u00fdch vibr\u00e1ci\u00e1ch stroja. Ide o z\u00e1klad zn\u00e1mej\u0161ieho pojmu <strong><a href=\"https:\/\/vibromera.eu\/sk\/glossary\/envelope-analysis\/\">Anal\u00fdza ob\u00e1lky<\/a><\/strong>, pri\u010dom tieto dva pojmy sa \u010dasto pou\u017e\u00edvaj\u00fa ako synonym\u00e1. T\u00e1to met\u00f3da izoluje vysokofrekven\u010dn\u00e9 p\u00e1smo kmitania, ktor\u00e9 sa spr\u00e1va ako <em>nosn\u00e1 vlna<\/em>, a potom extrahuje <em>ob\u00e1lka<\/em> toho nosi\u010da \u2013 \u010d\u00edm sa odhal\u00ed z\u00e1kladn\u00e1 frekvencia opakovania drobn\u00fdch periodick\u00fdch n\u00e1razov, ak\u00e9 napr\u00edklad sp\u00f4sobuj\u00fa mikroskopick\u00e9 zlomy v <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/bearing-defects\/\">lo\u017eisk\u00e1<\/a> alebo <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/gear-defects\/\">ozuben\u00e9 koles\u00e1<\/a>.<\/p>\n<h2>1. Defin\u00edcia: \u010co je demodul\u00e1cia?<\/h2>\n<p>Ka\u017ed\u00e1 vada v valivom lo\u017eisku alebo v ozubenom kolese sp\u00f4sobuje kr\u00e1tky mechanick\u00fd n\u00e1raz zaka\u017ed\u00fdm, ke\u010f sa nad \u0148ou prejde za\u0165a\u017een\u00e1 plocha. Tento n\u00e1raz rozkmit\u00e1 vlastn\u00e9 frekvencie kon\u0161trukcie, \u010d\u00edm stroj \u201erezonuje\u201c pri frekvenci\u00e1ch, ktor\u00e9 v\u00fdrazne prevy\u0161uj\u00fa prev\u00e1dzkov\u00fa r\u00fdchlos\u0165. Samotn\u00e9 n\u00e1razy maj\u00fa ve\u013emi mal\u00fa energiu, ale opakuj\u00fa sa s presnou, predv\u00eddate\u013enou frekvenciou, ktor\u00e1 s\u00favis\u00ed s geometriou komponentu. Demodul\u00e1cia odstra\u0148uje vysokofrekven\u010dn\u00e9 zvonenie a zachyt\u00e1va iba t\u00fato frekvenciu opakovania \u2013 inform\u00e1ciu, ktor\u00e1 skuto\u010dne identifikuje poruchu.<\/p>\n<p>Tento v\u00fdsledok \u00fazko s\u00favis\u00ed s my\u0161lienkou <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/envelope-spectrum\/\">ob\u00e1lkov\u00e9 spektrum<\/a>: zobrazenie frekvencie vypo\u010d\u00edtan\u00e9 nie zo surov\u00e9ho priebehu sign\u00e1lu, ale z jeho demodulovanej ob\u00e1lky. Kde be\u017en\u00fd <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/spectrum\/\">vibra\u010dn\u00e9 spektrum<\/a> ukazuje energiu <em>v<\/em> V demodulovanom spektre sign\u00e1lu je vidie\u0165 rytmus n\u00e1razov, ktor\u00e9 s\u00fa v \u0148om ukryt\u00e9.<\/p>\n<h2>2. Proces demodul\u00e1cie<\/h2>\n<p>Demodul\u00e1cia je trojf\u00e1zov\u00fd proces, ktor\u00fd sa uplat\u0148uje na surov\u00fd sign\u00e1l z <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/accelerometer\/\">akcelerometer<\/a> pred akouko\u013evek kone\u010dnou transform\u00e1ciou:<\/p>\n<ol>\n<li><strong>P\u00e1smov\u00e9 filtrovanie:<\/strong> Surov\u00fd vibra\u010dn\u00fd sign\u00e1l sa najprv prech\u00e1dza cez vysokofrekven\u010dn\u00fd <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/band-pass-filter\/\">p\u00e1smov\u00fd filter<\/a>. T\u00fdm sa odstr\u00e1ni siln\u00fd n\u00edzkofrekven\u010dn\u00fd obsah \u2014 <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/unbalance\/\">nevyv\u00e1\u017eenos\u0165<\/a>, <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/misalignment\/\">nespr\u00e1vne zarovnanie<\/a>, vo\u013enos\u0165 \u2013 a zachov\u00e1va iba oblas\u0165 vysok\u00fdch frekvenci\u00ed, kde nap\u00e4\u0165ov\u00e9 vlny sp\u00f4soben\u00e9 n\u00e1razmi lo\u017e\u00edsk alebo ozuben\u00fdch kolies vyvol\u00e1vaj\u00fa rezonanciu kon\u0161trukcie <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/resonance\/\">rezonancie<\/a>. Spr\u00e1vny v\u00fdber tohto p\u00e1sma (\u010dasto zameran\u00e9ho na zn\u00e1mu \u0161truktur\u00e1lnu rezonanciu) je najd\u00f4le\u017eitej\u0161\u00edm rozhodnut\u00edm pri nastavovan\u00ed v r\u00e1mci celej met\u00f3dy.<\/li>\n<li><strong>N\u00e1prava:<\/strong> Filtrovan\u00fd vysokofrekven\u010dn\u00fd sign\u00e1l sa n\u00e1sledne usmern\u00ed \u2013 z\u00e1porn\u00e1 polovica priebehu vlny sa prevr\u00e1ti na kladn\u00fa \u2013 \u010d\u00edm vznikne sign\u00e1l, ktor\u00fd reprezentuje absol\u00fatnu amplit\u00fadu nosnej vlny.<\/li>\n<li><strong>N\u00edzkopriepustn\u00e9 filtrovanie (obalovanie):<\/strong> Nakoniec sa usmernen\u00fd sign\u00e1l vedie cez <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/low-pass-filter\/\">dolnopriepustn\u00fd filter<\/a>. T\u00fdm sa odfiltruje vysokofrekven\u010dn\u00e1 nosn\u00e1 vlna a zostane len pomaly sa meniaca \u201eob\u00e1lka\u201c, ktor\u00e1 sleduje vrcholy usmernen\u00e9ho sign\u00e1lu. T\u00e1to ob\u00e1lka priamo odr\u00e1\u017ea frekvenciu opakovania z\u00e1kladn\u00fdch n\u00e1razov.<\/li>\n<\/ol>\n<p>Jeden <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/fft\/\">R\u00fdchla premena funkcie (FFT)<\/a> sa n\u00e1sledne vykon\u00e1 na ob\u00e1lkovom sign\u00e1li. V\u00fdsledn\u00e9 spektrum \u2013 ob\u00e1lkov\u00e9 spektrum alebo demodulovan\u00e9 spektrum \u2013 vykazuje jasn\u00e9 vrcholy presne na frekvenci\u00e1ch por\u00fach lo\u017e\u00edsk alebo s\u00fa\u010dast\u00ed prevodovky, a to aj v pr\u00edpade, \u017ee by tieto vrcholy neboli vidite\u013en\u00e9 v be\u017enom spektre surov\u00fdch \u00fadajov.<\/p>\n<h2>3. Pre\u010do je demodul\u00e1cia tak\u00e1 \u00fa\u010dinn\u00e1?<\/h2>\n<p>Demodul\u00e1cia patr\u00ed medzi naju\u017eito\u010dnej\u0161ie techniky v\u010dasnej detekcie por\u00fach pr\u00e1ve v\u010faka tomu, ako sprac\u00fava n\u00e1razov\u00e9 sign\u00e1ly.<\/p>\n<ul>\n<li><strong>V\u010dasn\u00e9 varovanie:<\/strong> When a tiny <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/spalling\/\">spall<\/a> Ke\u010f valiv\u00fd prvok naraz\u00ed na lo\u017eiskov\u00fa dosku, d\u00f4jde k mal\u00e9mu n\u00e1razu s n\u00edzkou energiou. Tento n\u00e1raz vyvol\u00e1 ve\u013emi kr\u00e1tky, vysokofrekven\u010dn\u00fd v\u00fdkyv vibr\u00e1ci\u00ed, ke\u010f\u017ee kon\u0161trukcia stroja rezonuje pri svojich vlastn\u00fdch frekvenci\u00e1ch \u2013 a to e\u0161te d\u00e1vno predt\u00fdm, ne\u017e po\u0161kodenie dosiahne tak\u00fd rozsah, aby zv\u00fd\u0161ilo celkov\u00fa \u00farove\u0148 vibr\u00e1ci\u00ed.<\/li>\n<li><strong>Oddelenie sign\u00e1lu od \u0161umu:<\/strong> V be\u017enom FFT spektre je zanedbate\u013en\u00e1 energia t\u00fdchto po\u010diato\u010dn\u00fdch n\u00e1razov \u00faplne prekryt\u00e1 obrovskou energiou n\u00edzkofrekven\u010dn\u00fdch vibr\u00e1ci\u00ed, ako je napr\u00edklad nevyv\u00e1\u017eenos\u0165. Chyba sa v \u00fadajoch nach\u00e1dza, je v\u0161ak prehlu\u0161en\u00e1.<\/li>\n<li><strong>Zameranie na mieru opakovania:<\/strong> Demodul\u00e1cia \u00faplne ignoruje siln\u00e9 n\u00edzkofrekven\u010dn\u00e9 sign\u00e1ly. Zameriava sa na vysokofrekven\u010dn\u00e9 zvonenie a, \u010do je najd\u00f4le\u017eitej\u0161ie, na <em>opakovacia frekvencia<\/em> toho zvonenia. Pr\u00e1ve t\u00e1to frekvencia opakovania priamo zodpoved\u00e1 <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/bearing-fault-frequencies\/\">frekvencie por\u00fach lo\u017e\u00edsk<\/a> \u2014 <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/bpfo\/\">BPFO<\/a>, <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/bpfi\/\">BPFI<\/a>, <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/bsf\/\">BSF<\/a> \u2014 a k <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/gear-mesh-frequency\/\">frekvencia z\u00e1beru ozuben\u00fdch kolies<\/a> (GMF) a jeho postrann\u00e9 p\u00e1sma.<\/li>\n<\/ul>\n<blockquote><p>Preto\u017ee demodul\u00e1cia reaguje na <em>impacts<\/em> rather than <em>amplit\u00fada<\/em>... dok\u00e1\u017ee odhali\u0165 po\u0161koden\u00e9 lo\u017eisko u\u017e mesiace predt\u00fdm, ne\u017e sa to prejav\u00ed na \u0161tandardnom spektre r\u00fdchlost\u00ed \u2013 \u010do predstavuje rozhoduj\u00facu v\u00fdhodu v <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/predictive-maintenance\/\">predikt\u00edvna \u00fadr\u017eba<\/a>.<\/p><\/blockquote>\n<h2>4. Aplik\u00e1cie a vyu\u017eitie v ter\u00e9ne<\/h2>\n<p>Hlavn\u00e9 aplik\u00e1cie demodul\u00e1cie s\u00fa:<\/p>\n<ul>\n<li><strong>Anal\u00fdza valiv\u00fdch lo\u017e\u00edsk:<\/strong> Ide o najspo\u013eahlivej\u0161iu met\u00f3du na detekciu a diagnostiku por\u00fach gu\u013e\u00f4\u010dkov\u00fdch a val\u010dekov\u00fdch lo\u017e\u00edsk, ktor\u00e1 \u010dasto varuje u\u017e mesiace predt\u00fdm, ne\u017e sa porucha stane kritickou. Pr\u00edtomnos\u0165 energie na frekvenci\u00e1ch BPFO, BPFI alebo BSF v ob\u00e1lkovom spektre je takmer jednozna\u010dn\u00fdm znakom lokalizovanej poruchy.<\/li>\n<li><strong>Anal\u00fdza prevodovky:<\/strong> Je mimoriadne \u00fa\u010dinn\u00fd pri detekcii prasknut\u00fdch alebo zlomen\u00fdch zubov ozuben\u00e9ho kolesa, ktor\u00e9 v demodulovanom spektre vyvol\u00e1vaj\u00fa jasn\u00fd impulz pri r\u00fdchlosti 1\u00d7 ot\u00e1\u010dky po\u0161koden\u00e9ho ozuben\u00e9ho kolesa, \u010dasto sprev\u00e1dzan\u00fd <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/sidebands\/\">bo\u010dn\u00e9 p\u00e1sma<\/a>.<\/li>\n<li><strong>\u010eal\u0161ie ovplyv\u0148uj\u00face udalosti:<\/strong> Dok\u00e1\u017ee tie\u017e detekova\u0165 aj in\u00e9 opakuj\u00face sa n\u00e1razov\u00e9 javy \u2013 cyklick\u00e9 otv\u00e1ranie a zatv\u00e1ranie odvod\u0148ova\u010dov alebo probl\u00e9my s \u010dasovan\u00edm ventilov v piestov\u00fdch motoroch.<\/li>\n<\/ul>\n<p>V ter\u00e9ne sl\u00fa\u017ei ten ist\u00fd pr\u00edstroj, ktor\u00fd sa pou\u017e\u00edva na vyva\u017eovanie, aj ako diagnostick\u00fd n\u00e1stroj. Prenosn\u00fd dvojkan\u00e1lov\u00fd analyz\u00e1tor, ako napr\u00edklad <a href=\"https:\/\/vibromera.eu\/sk\/produkt\/balanset-1\/\">Balanset-1A<\/a> zachyt\u00e1va \u0161irokop\u00e1smov\u00fd sign\u00e1l z akcelerometra na ka\u017edom lo\u017eisku, tak\u017ee technik m\u00f4\u017ee ved\u013ea seba porovna\u0165 be\u017en\u00e9 spektrum a demodulovan\u00fa ob\u00e1lku a rozhodn\u00fa\u0165, \u010di ide o skuto\u010dn\u00fd 1\u00d7 vrchol <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/imbalance\/\">nerovnov\u00e1ha<\/a> alebo prv\u00fd n\u00e1znak poruchy lo\u017eiska. S\u00favisiace pr\u00edstupy, ako napr\u00edklad <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/shock-pulse-method\/\">met\u00f3da r\u00e1zov\u00e9ho impulzu<\/a> a <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/spike-energy\/\">spike energy<\/a> vyu\u017e\u00edvaj\u00fa tie ist\u00e9 vysokofrekven\u010dn\u00e9 impulzy, av\u0161ak demodul\u00e1cia zost\u00e1va najviac diagnostickou met\u00f3dou, preto\u017ee zachov\u00e1va cel\u00e9 spektrum opakovacej frekvencie, namiesto toho, aby ho zredukovala na jedin\u00fa hodnotu.<\/p>\n<h2>5. \u010cast\u00e9 chyby pri in\u0161tal\u00e1cii a osved\u010den\u00e9 postupy<\/h2>\n<ul>\n<li><strong>Nespr\u00e1vne p\u00e1smo filtra:<\/strong> Ak je p\u00e1smov\u00fd filter nastaven\u00fd mimo skuto\u010dnej kon\u0161truk\u010dnej rezonancie, tieto vplyvy sa nezosil\u0148uj\u00fa a spektrum ob\u00e1lky vyzer\u00e1 pr\u00e1zdne, aj ke\u010f sa v n\u00e1stroji nach\u00e1dza vada. Mnoh\u00e9 n\u00e1stroje pon\u00fakaj\u00fa prednastaven\u00e9 p\u00e1sma; <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/bump-test\/\">n\u00e1razov\u00fd test<\/a> m\u00f4\u017ee potvrdi\u0165, kde kon\u0161trukcia znie.<\/li>\n<li><strong>Mont\u00e1\u017e je d\u00f4le\u017eit\u00e1:<\/strong> Vysokofrekven\u010dn\u00e1 energia n\u00e1razu sa cez m\u00e4kk\u00e9 upevnenia \u013eahko str\u00e1ca. Senzor upevnen\u00fd pomocou skrutiek alebo lepidla chr\u00e1ni nosi\u010d ove\u013ea lep\u0161ie ako magnet na lakovanom povrchu \u2014 pozri <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/iso-5348\/\">ISO 5348<\/a> o upevnen\u00ed akcelerometra.<\/li>\n<li><strong>Interpret\u00e1cia, nie len detekcia:<\/strong> Pred stanoven\u00edm diagn\u00f3zy je potrebn\u00e9 porovna\u0165 vrchol spektra ob\u00e1lky s vypo\u010d\u00edtan\u00fdmi frekvenciami por\u00fach pre konkr\u00e9tne lo\u017eisko; v opa\u010dnom pr\u00edpade by sa harmonick\u00e9 zlo\u017eky prev\u00e1dzkovej r\u00fdchlosti mohli mylne pova\u017eova\u0165 za poruchu.<\/li>\n<\/ul>\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 demodul\u00e1cii, technike spracovania sign\u00e1lu, ktor\u00e1 je synonymom pre anal\u00fdzu ob\u00e1lky a pou\u017e\u00edva sa na extrakciu n\u00edzkofrekven\u010dn\u00fdch inform\u00e1ci\u00ed o poruch\u00e1ch z vysokofrekven\u010dn\u00fdch nosn\u00fdch sign\u00e1lov, ide\u00e1lna na anal\u00fdzu lo\u017e\u00edsk a ozuben\u00fdch kolies.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-99","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/glossary\/99","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":1,"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/glossary\/99\/revisions"}],"predecessor-version":[{"id":101230,"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/glossary\/99\/revisions\/101230"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/media?parent=99"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/categories?post=99"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/tags?post=99"}],"curies":[{"name":"pracovn\u00fd list","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}