{"id":230,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/self-excited-vibration\/"},"modified":"2026-05-23T22:39:08","modified_gmt":"2026-05-23T22:39:08","slug":"self-excited-vibration","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/sk\/glossary\/self-excited-vibration\/","title":{"rendered":"\u010co je to samobuden\u00e9 vibrovanie? \u2013 Nestabiln\u00e9 syst\u00e9mov\u00e9 reakcie"},"content":{"rendered":"<h1>Pochopenie samobuden\u00fdch vibr\u00e1ci\u00ed<\/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\/230?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\/230?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\/230?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\/230?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\/230?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\/230?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\/230?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\/230?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\/230?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\/230?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\/230?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\/230?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\/230?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\/230?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>Samobuden\u00e9 vibr\u00e1cie<\/strong> \u2014 naz\u00fdvan\u00e1 tie\u017e samovzbuden\u00e1 alebo nestabiln\u00e1 vibr\u00e1cia \u2014 je mimoriadne nebezpe\u010dn\u00fd typ pohybu, pri ktorom pohyb syst\u00e9mu generuje pr\u00e1ve tie sily, ktor\u00e9 tento pohyb udr\u017eiavaj\u00fa alebo zosil\u0148uj\u00fa. V\u00fdsledkom je uzavret\u00e1 sp\u00e4tn\u00e1 v\u00e4zba: vibr\u00e1cia vytv\u00e1ra svoju vlastn\u00fa hnaciu silu, tak\u017ee amplit\u00fada m\u00f4\u017ee narasta\u0165, niekedy a\u017e do katastrof\u00e1lnej \u00farovne, bez ak\u00e9hoko\u013evek zv\u00fd\u0161enia vonkaj\u0161ieho p\u00f4sobenia. Ide o mechanizmus, ktor\u00fd stoj\u00ed za viacer\u00fdmi z najob\u00e1vanej\u0161\u00edch nestabiln\u00fdch javov v <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/rotor-dynamics\/\">dynamika rotora<\/a>, a jeho r\u00fdchle rozpoznanie je k\u013e\u00fa\u010dovou diagnostickou zru\u010dnos\u0165ou.<\/p>\n<p>Toto sa z\u00e1sadne l\u00ed\u0161i od <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/forced-vibration\/\">vyn\u00faten\u00e9 vibr\u00e1cie<\/a> ako napr. <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/unbalance\/\">nevyv\u00e1\u017eenos\u0165<\/a> alebo <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/misalignment\/\">nespr\u00e1vne zarovnanie<\/a>, kde s\u00fa vibr\u00e1cie priamou a \u00famernou reakciou na konkr\u00e9tny periodick\u00fd vstup pri zn\u00e1mej budiacej frekvencii. Ak sa nevyv\u00e1\u017eenos\u0165 zdvojn\u00e1sob\u00ed, zdvojn\u00e1sob\u00ed sa aj reakcia; ak sa budiaci sign\u00e1l odstr\u00e1ni, vibr\u00e1cie ustan\u00fa. V samobudenom syst\u00e9me neexistuje \u017eiadny tak\u00fdto vonkaj\u0161\u00ed budiaci sign\u00e1l \u2013 pohyb sa \u017eiv\u00ed s\u00e1m a energia, ktor\u00e1 ho poh\u00e1\u0148a, poch\u00e1dza zo stabiln\u00e9ho zdroja, ako je rot\u00e1cia, pr\u00fadenie tekutiny alebo rezac\u00ed proces.<\/p>\n<h2>1. Mechanizmus sp\u00e4tnej v\u00e4zby<\/h2>\n<p>Mechanizmus samovzbudzovanej vibr\u00e1cie mo\u017eno op\u00edsa\u0165 ako sled krokov:<\/p>\n<ol>\n<li>Syst\u00e9m \u2013 napr\u00edklad rotor ot\u00e1\u010daj\u00faci sa v lo\u017eisku \u2013 je v rovnomernom pohybe.<\/li>\n<li>Mal\u00e9 n\u00e1hodn\u00e9 naru\u0161enie sp\u00f4sobuje mierny posun alebo zmenu r\u00fdchlosti.<\/li>\n<li>T\u00e1to zmena pohybu men\u00ed sily p\u00f4sobiace na syst\u00e9m \u2013 napr\u00edklad tlak kvapaliny v <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/journal-bearing\/\">klzn\u00e9 lo\u017eisko<\/a> alebo reznej sily p\u00f4sobiacej na n\u00e1stroj.<\/li>\n<li>Rozhoduj\u00face je, \u017ee t\u00e1to zmenen\u00e1 sila p\u00f4sob\u00ed tak, \u017ee <em>prida\u0165 energiu<\/em> do syst\u00e9mu, \u010d\u00edm sa komponent posunul \u010falej v smere, ktor\u00fdm sa u\u017e pohyboval.<\/li>\n<li>Zv\u00fd\u0161en\u00fd pohyb vytv\u00e1ra e\u0161te v\u00e4\u010d\u0161iu silu, ktor\u00e1 dod\u00e1va e\u0161te viac energie \u2013 a tento cyklus sa opakuje.<\/li>\n<\/ol>\n<p>Slu\u010dka zvy\u0161uje amplit\u00fadu, k\u00fdm ju nezastavia nelinearity v syst\u00e9me (rotor naraz\u00ed na pevn\u00fd doraz, tesnenie uzavrie medzeru) alebo k\u00fdm ned\u00f4jde k poruche. K\u013e\u00fa\u010dov\u00fdm fyzik\u00e1lnym poznatkom je energetick\u00e1 bilancia: nestabilita vznik\u00e1 v\u017edy, ke\u010f sila z\u00e1visl\u00e1 od pohybu dod\u00e1va energiu r\u00fdchlej\u0161ie, ne\u017e syst\u00e9m <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/damping\/\">tlmenie<\/a> m\u00f4\u017ee t\u00fato energiu rozpt\u00fdli\u0165. Primeran\u00e9 tlmenie je preto prvou l\u00edniou obrany proti samovzbudeniu.<\/p>\n<h2>2. Be\u017en\u00e9 pr\u00edklady samovzbudzovan\u00fdch kmitov<\/h2>\n<p>Nieko\u013eko dobre zn\u00e1mych javov v diagnostike strojov predstavuje typick\u00e9 pr\u00edklady samovzbuden\u00fdch kmitov:<\/p>\n<ul>\n<li><strong><a href=\"https:\/\/vibromera.eu\/sk\/glossary\/oil-whirl\/\">Olejov\u00fd v\u00edr<\/a> a olejov\u00fd bi\u010d:<\/strong> najbe\u017enej\u0161ie pr\u00edklady v rota\u010dn\u00fdch strojoch. V lo\u017eisku s tekutinov\u00fdm filmom rotuj\u00faci hriade\u013e v\u0165ahuje olej do za\u0165a\u017eovacieho klinu. Naru\u0161enie m\u00f4\u017ee sp\u00f4sobi\u0165, \u017ee sa samotn\u00fd klin za\u010dne ot\u00e1\u010da\u0165 (kr\u00fa\u017ei\u0165) okolo lo\u017eiska; tlak z tohto kr\u00fa\u017eiaceho klinu tla\u010d\u00ed na hriade\u013e, \u010d\u00edm dod\u00e1va kr\u00fa\u017eeniu \u010fal\u0161iu energiu. V\u00fdsledn\u00e9 vibr\u00e1cie nevznikaj\u00fa pri prev\u00e1dzkovej r\u00fdchlosti, ale pri <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/sub-synchronous\/\">subsynchr\u00f3nny<\/a> frekvencia, zvy\u010dajne 0,42\u20130,48\u00d7 <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/running-speed\/\">prev\u00e1dzkov\u00e1 r\u00fdchlos\u0165<\/a>. Ak sa frekvencia v\u00edrenia posunie nahor tak, \u017ee sa zhoduje s rotorom <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/natural-frequency\/\">prirodzen\u00e1 frekvencia<\/a>, situ\u00e1cia sa vyhrot\u00ed a prerastie do ove\u013ea n\u00e1silnej\u0161ej <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/shaft-whip\/\">bi\u010d<\/a> stav.<\/li>\n<li><strong>Hluk pri obr\u00e1ban\u00ed:<\/strong> Pri s\u00fastru\u017een\u00ed alebo fr\u00e9zovan\u00ed doch\u00e1dza k chveniu (chatter) v okamihu, ke\u010f sa rezn\u00fd n\u00e1stroj za\u010dne trias\u0165. Tieto vibr\u00e1cie sp\u00f4sobuj\u00fa kol\u00edsanie hr\u00fabky triesky, \u010do vedie ku kol\u00edsaniu rezn\u00fdch s\u00edl, a tieto kol\u00edsaj\u00face sily zase dod\u00e1vaj\u00fa energiu sp\u00e4\u0165 do vibr\u00e1ci\u00ed n\u00e1stroja \u2013 \u010d\u00edm sa z nich st\u00e1va prudk\u00e9, samoudr\u017eiavaj\u00face sa chvenie (chatter), ktor\u00e9 ni\u010d\u00ed povrchov\u00fa \u00fapravu a samotn\u00fd n\u00e1stroj.<\/li>\n<li><strong>Aerodynamick\u00e9 chvenie:<\/strong> spojen\u00e9 ohybov\u00e9 a torzn\u00e9 kmity kr\u00eddla lietadla (alebo lopatky turb\u00edny), pri ktor\u00fdch pohyb men\u00ed aerodynamick\u00fd profil, zmenen\u00fd profil ovplyv\u0148uje tlak vzduchu a tento zmenen\u00fd tlak zase dod\u00e1va energiu sp\u00e4\u0165 do pohybu \u2013 \u010do m\u00f4\u017ee vies\u0165 k katastrof\u00e1lnemu zlyhaniu, ak sa tento proces nekontroluje.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/sk\/glossary\/rotor-rub\/\">Trenie rotora<\/a>:<\/strong> Ke\u010f sa rotor dotkne nehybnej \u010dasti, trenie v mieste kontaktu lok\u00e1lne zahreje rotor a sp\u00f4sob\u00ed jeho ohnutie. Toto ohnutie zvy\u0161uje treciu silu, \u010do vedie k \u010fal\u0161iemu n\u00e1rastu tepla a v\u00e4\u010d\u0161iemu ohnutiu, \u010d\u00edm vznik\u00e1 tepeln\u00e9 sp\u00e4tn\u00e9 v\u00e4zby, ktor\u00e9 m\u00f4\u017ee vy\u00fasti\u0165 do zadrenia.<\/li>\n<\/ul>\n<p>\u010eal\u0161\u00edmi dvoma pr\u00edbuzn\u00fdmi zariadeniami poh\u00e1\u0148an\u00fdmi tekutinou, o ktor\u00fdch stoj\u00ed za to vedie\u0165, s\u00fa <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/steam-whirl\/\">parn\u00fd v\u00edr<\/a> v turb\u00ednach a v \u0161ir\u0161ej skupine nestabil\u00edt vyvolan\u00fdch pr\u00faden\u00edm, ktor\u00e9 s\u00fa sp\u00f4soben\u00e9 <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/aerodynamic-forces\/\">aerodynamick\u00e9 sily<\/a>, pri\u010dom oba funguj\u00fa na rovnakom princ\u00edpe energetickej sp\u00e4tnej v\u00e4zby.<\/p>\n<h2>3. Stru\u010dn\u00fd preh\u013ead: vlastn\u00e9 a vyn\u00faten\u00e9 kmitanie<\/h2>\n<table border=\"1\" style=\"width:100%; border-collapse:collapse;\">\n<tr>\n<th>Vlastnos\u0165<\/th>\n<th>N\u00faten\u00e9 vibr\u00e1cie<\/th>\n<th>Samobuden\u00e9 vibr\u00e1cie<\/th>\n<\/tr>\n<tr>\n<td>Budiaca frekvencia<\/td>\n<td>Nastavenie pomocou extern\u00e9ho vstupu (napr. 1\u00d7 pre nesymetriu)<\/td>\n<td>Ur\u010duje samotn\u00fd syst\u00e9m, \u010dasto ide o vlastn\u00fa frekvenciu<\/td>\n<\/tr>\n<tr>\n<td>Frekvencia verzus r\u00fdchlos\u0165<\/td>\n<td>Sleduje ot\u00e1\u010dkov\u00fa frekvenciu<\/td>\n<td>\u010casto pracuje v subsynchr\u00f3nnom re\u017eime a nesleduje 1\u00d7<\/td>\n<\/tr>\n<tr>\n<td>Chovanie amplit\u00fady<\/td>\n<td>Stabiln\u00fd, \u00famern\u00fd p\u00f4sobiacej sile<\/td>\n<td>M\u00f4\u017ee r\u00e1s\u0165 bez obmedzenia, k\u00fdm do toho nezasiahne nelinearita<\/td>\n<\/tr>\n<tr>\n<td>Zdroj energie<\/td>\n<td>Periodick\u00e1 vonkaj\u0161ia sila<\/td>\n<td>St\u00e1ly zdroj (rot\u00e1cia, pr\u00fadenie, rezanie) vyu\u017e\u00edvan\u00fd pohybom<\/td>\n<\/tr>\n<\/table>\n<h2>4. K\u013e\u00fa\u010dov\u00e9 charakteristiky a diagnostika<\/h2>\n<p>Samovzbudzovan\u00e9 kmitania zvy\u010dajne zanech\u00e1vaj\u00fa charakteristick\u00e9 stopy v <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/spectrum\/\">Spektrum FFT<\/a>:<\/p>\n<ul>\n<li><strong>Nesynchr\u00f3nne frekvencie:<\/strong> Vibr\u00e1cie zvy\u010dajne nie s\u00fa celo\u010d\u00edseln\u00fdm n\u00e1sobkom ani harmonickou ot\u00e1\u010dok. Zvy\u010dajne sa pohybuj\u00fa v oblasti subsynchr\u00f3nnej frekvencie.<\/li>\n<li><strong>Nestabilita:<\/strong> amplit\u00fada m\u00f4\u017ee by\u0165 ve\u013emi nepravideln\u00e1 a m\u00f4\u017ee r\u00fdchlo st\u00fapa\u0165 u\u017e pri mal\u00fdch zmen\u00e1ch r\u00fdchlosti, teploty alebo za\u0165a\u017eenia.<\/li>\n<li><strong>N\u00e1hly n\u00e1stup:<\/strong> vibr\u00e1cie sa m\u00f4\u017eu \u00faplne nevyskytova\u0165, k\u00fdm stroj nedosiahne ur\u010dit\u00fa prahov\u00fa hodnotu r\u00fdchlosti alebo za\u0165a\u017eenia \u2014 \u010dasto s\u00favisiacu s <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/critical-speed\/\">kritick\u00e1 r\u00fdchlos\u0165<\/a> \u2014 v tom momente sa n\u00e1hle objav\u00ed s ve\u013ekou amplit\u00fadou.<\/li>\n<\/ul>\n<p>Diagnostika spo\u010d\u00edva v identifik\u00e1cii t\u00fdchto charakteristick\u00fdch nesynchr\u00f3nnych \u0161pi\u010diek a n\u00e1slednom odvoden\u00ed fyzik\u00e1lneho mechanizmu, ktor\u00fd by mohol sp\u00f4sobi\u0165 tak\u00fato nestabilitu v danom stroji. Ke\u010f\u017ee vznik tohto javu s\u00favis\u00ed s prev\u00e1dzkov\u00fdmi podmienkami, z\u00e1znam pri premenliv\u00fdch ot\u00e1\u010dkach je obzvl\u00e1\u0161\u0165 pr\u00ednosn\u00fd: a <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/cascade-plot\/\">kask\u00e1dov\u00fd graf<\/a> Z\u00e1znam z f\u00e1zy zr\u00fdch\u013eovania alebo spoma\u013eovania ukazuje, \u017ee sa objav\u00ed subsynchr\u00f3nna zlo\u017eka, ktor\u00e1 sa n\u00e1sledne ust\u00e1li na vlastnej frekvencii, \u010do je nezamenite\u013en\u00fd znak prechodu z v\u00edriv\u00e9ho pohybu do \u0161\u013eahov\u00e9ho. V pr\u00edpadoch s\u00favisiacich s lo\u017eiskami, a <a href=\"https:\/\/vibromera.eu\/sk\/calculators\/journal-bearing-frequencies\/\">Kalkul\u00e1tor frekvencie por\u00fach lo\u017e\u00edsk<\/a> pom\u00e1ha potvrdi\u0165, \u010di sa podozriv\u00fd vrchol nach\u00e1dza v p\u00e1sme olejov\u00e9ho v\u00edru. Zhrnuj\u00faci term\u00edn pre tento celkov\u00fd jav je <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/rotor-instability\/\">nestabilita rotora<\/a>... a odl\u00ed\u0161i\u0165 ju od vyn\u00fatenej odozvy je pre analytika prv\u00fdm a najd\u00f4le\u017eitej\u0161\u00edm rozhodovac\u00edm bodom \u2013 preto\u017ee rie\u0161enie je \u00faplne odli\u0161n\u00e9: vyn\u00faten\u00e9 vibr\u00e1cie sa eliminuj\u00fa vyv\u00e1\u017een\u00edm alebo nastaven\u00edm, zatia\u013e \u010do samovo\u013en\u00fa nestabilitu je potrebn\u00e9 odstr\u00e1ni\u0165 kon\u0161truk\u010dn\u00fdm rie\u0161en\u00edm zmenou geometrie lo\u017e\u00edsk, v\u00f4\u013eou, za\u0165a\u017een\u00edm alebo tlmen\u00edm.<\/p>\n<h2>5. Pre\u010do to nemo\u017eno vyv\u00e1\u017ei\u0165<\/h2>\n<p>Z fyziky priamo vypl\u00fdva praktick\u00e9 varovanie. Ke\u010f\u017ee samovo\u013en\u00e9 kmitanie nie je reakciou na rotuj\u00face \u0165a\u017eisko, ned\u00e1 sa odstr\u00e1ni\u0165 pridan\u00edm vyva\u017eovac\u00edch z\u00e1va\u017e\u00ed \u2013 energiu dod\u00e1va lo\u017eiskov\u00e1 kvapalina, proces rezania alebo pr\u00fadenie vzduchu, nie nerovnov\u00e1ha hmotnosti. Pr\u00e1ve preto je pred ak\u00fdmko\u013evek n\u00e1pravn\u00fdm z\u00e1sahom d\u00f4le\u017eit\u00e9 vykona\u0165 d\u00f4kladn\u00e9 meranie v ter\u00e9ne: ke\u010f technik zmeria amplit\u00fadu a f\u00e1zu pomocou prenosn\u00e9ho dvojkan\u00e1lov\u00e9ho analyz\u00e1tora, ako je napr\u00edklad <a href=\"https:\/\/vibromera.eu\/sk\/produkt\/balanset-1\/\">Balanset-1A<\/a>, stabiln\u00fd a opakovate\u013en\u00fd 1\u00d7 vektor poukazuje na skuto\u010dn\u00fd probl\u00e9m s vyva\u017eovan\u00edm, zatia\u013e \u010do kol\u00edsav\u00e1, subsynchr\u00f3nna a neopakovate\u013en\u00e1 zlo\u017eka je varovn\u00fdm sign\u00e1lom, \u017ee porucha spo\u010d\u00edva v nestabilite a \u017ee vyva\u017eovanie by bolo zbyto\u010dn\u00fdm \u00fasil\u00edm. \u010c\u00edtanie <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/vibration-analyzer\/\">analyz\u00e1tor<\/a> spr\u00e1vne tak zabra\u0148uje klasickej chybe, ke\u010f sa sna\u017e\u00edme vyv\u00e1\u017ei\u0165 <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/whirl\/\">v\u00edr<\/a>.<\/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>Vysvetlenie samobuden\u00fdch vibr\u00e1ci\u00ed, nebezpe\u010dn\u00e9ho typu vibr\u00e1ci\u00ed, pri ktor\u00fdch samotn\u00fd pohyb vytv\u00e1ra sily, ktor\u00e9 vibr\u00e1cie udr\u017eiavaj\u00fa alebo zosil\u0148uj\u00fa, ako napr\u00edklad olejov\u00fd v\u00edr a \u0161kr\u00edpanie.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-230","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/glossary\/230","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\/230\/revisions"}],"predecessor-version":[{"id":101308,"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/glossary\/230\/revisions\/101308"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/media?parent=230"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/categories?post=230"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/tags?post=230"}],"curies":[{"name":"pracovn\u00fd list","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}