{"id":219,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/rotor-instability\/"},"modified":"2026-05-23T22:53:31","modified_gmt":"2026-05-23T22:53:31","slug":"rotor-instability","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/cs\/glossary\/rotor-instability\/","title":{"rendered":"Co je nestabilita rotoru? Samobuzen\u00e9 vibrace"},"content":{"rendered":"<h1>Pochopen\u00ed nestability rotoru<\/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\/219?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\/219?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\/219?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\/219?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\/219?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\/219?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\/219?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\/219?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\/219?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\/219?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\/219?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\/219?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\/219?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\/219?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>Nestabilita rotoru<\/strong> je stav u rota\u010dn\u00edch stroj\u016f, p\u0159i kter\u00e9m <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/self-excited-vibration\/\">samobuzen\u00e9 vibrace<\/a> se vyv\u00edj\u00ed a roste bez omezen\u00ed, omezov\u00e1ny pouze neline\u00e1rn\u00edmi jevy nebo \u00fapln\u00fdm selh\u00e1n\u00edm. Na rozd\u00edl od vibrac\u00ed zp\u016fsoben\u00fdch <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/unbalance\/\">nevyv\u00e1\u017eenost<\/a> nebo <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/misalignment\/\">nesouosost<\/a> \u2014 kter\u00e9 jsou <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/forced-vibration\/\">vynucen\u00e9 kmit\u00e1n\u00ed<\/a> vyvolan\u00e1 vn\u011bj\u0161\u00edmi silami \u2014 nestabilita je samoudr\u017euj\u00edc\u00ed se kmit\u00e1n\u00ed, kter\u00e9 neust\u00e1le \u010derp\u00e1 energii z plynul\u00e9ho ot\u00e1\u010den\u00ed h\u0159\u00eddele a p\u0159en\u00e1\u0161\u00ed ji do vibra\u010dn\u00edho pohybu. Jedn\u00e1 se o jeden z nejnebezpe\u010dn\u011bj\u0161\u00edch jev\u016f v <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/rotor-dynamics\/\">dynamika rotoru<\/a>: m\u016f\u017ee se objevit n\u00e1hle, b\u011bhem n\u011bkolika vte\u0159in nab\u00fdt ni\u010div\u00fdch rozm\u011br\u016f a \u2013 co je nejd\u016fle\u017eit\u011bj\u0161\u00ed \u2013 nelze ji vyl\u00e9\u010dit <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/vyvazovani\/\">vyva\u017eov\u00e1n\u00ed<\/a> nebo se\u0159\u00edzen\u00ed. Vy\u017eaduje to okam\u017eit\u00e9 zastaven\u00ed a odstran\u011bn\u00ed p\u0159\u00ed\u010diny, kter\u00e1 zp\u016fsobuje nestabilitu.<\/p>\n<h2>1. Nucen\u00e9 vs. samobudic\u00ed se kmit\u00e1n\u00ed<\/h2>\n<p>Nejd\u016fle\u017eit\u011bj\u0161\u00edm pojmem pro pochopen\u00ed nestability je rozli\u0161en\u00ed mezi vibracemi, kter\u00e9 jsou vyvol\u00e1ny vn\u011bj\u0161\u00edm p\u016fsoben\u00edm, a vibracemi, kter\u00e9 se samy bud\u00ed.<\/p>\n<h3>Vynucen\u00e9 kmit\u00e1n\u00ed (stabiln\u00ed)<\/h3>\n<p>V\u011bt\u0161ina vibrac\u00ed stroj\u016f je vyvol\u00e1na vn\u011bj\u0161\u00edmi vlivy. Pohyb je zp\u016fsoben vn\u011bj\u0161\u00ed silou \u2013 nevyv\u00e1\u017eenost\u00ed, nesouosost\u00ed nebo ohnutou h\u0159\u00eddel\u00ed \u2013 a syst\u00e9m na to pouze reaguje:<\/p>\n<ul>\n<li>Amplituda je \u00fam\u011brn\u00e1 velikosti p\u016fsob\u00edc\u00ed s\u00edly.<\/li>\n<li>Frekvence odpov\u00edd\u00e1 frekvenci bud\u00edc\u00edho sign\u00e1lu (1\u00d7, 2\u00d7 atd.).<\/li>\n<li>Odstra\u0148te s\u00edlu a vibrace zmiz\u00ed.<\/li>\n<li>Syst\u00e9m je stabiln\u00ed; vibrace nikdy nenab\u00fdvaj\u00ed neomezen\u00fdch rozm\u011br\u016f.<\/li>\n<\/ul>\n<h3>Vlastn\u00ed kmit\u00e1n\u00ed (nestabiln\u00ed)<\/h3>\n<p>Nestabilita je v z\u00e1sad\u011b odli\u0161n\u00e1. Energie se z\u00edsk\u00e1v\u00e1 p\u0159\u00edmo z rotace, nikoli z vn\u011bj\u0161\u00edho zdroje:<\/p>\n<ul>\n<li>Amplituda exponenci\u00e1ln\u011b roste, jakmile je p\u0159ekro\u010dena prahov\u00e1 rychlost<\/li>\n<li>Frekvence se obvykle pohybuje na \u00farovni nebo v bl\u00edzkosti <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/natural-frequency\/\">vlastn\u00ed frekvence<\/a>a obvykle je <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/sub-synchronous\/\">subsynchronn\u00ed<\/a>.<\/li>\n<li>Trv\u00e1 to a s\u00edl\u00ed i pot\u00e9, co byla nerovnov\u00e1ha dokonale odstran\u011bna.<\/li>\n<li>Syst\u00e9m je nestabiln\u00ed; zastavit ho lze pouze jeho vypnut\u00edm nebo fyzick\u00fdm z\u00e1sahem.<\/li>\n<\/ul>\n<h2>2. B\u011b\u017en\u00e9 typy nestability rotoru<\/h2>\n<h3>Olejov\u00fd v\u00edr<\/h3>\n<p><a href=\"https:\/\/vibromera.eu\/cs\/glossary\/oil-whirl\/\">Olejov\u00fd v\u00edr<\/a> je nej\u010dast\u011bj\u0161\u00ed nestabilitou v tekut\u00e9m filmu <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/journal-bearing\/\">kluzn\u00e9 lo\u017eisko<\/a> syst\u00e9my. Olejov\u00fd kl\u00edn, kter\u00fd podp\u00edr\u00e1 h\u0159\u00eddel, vyv\u00edj\u00ed tangenci\u00e1ln\u00ed s\u00edlu, kter\u00e1 tla\u010d\u00ed \u010dep v meze\u0159e lo\u017eiska. Vyskytuje se p\u0159i rychlosti p\u0159ibli\u017en\u011b 0,42\u20130,48n\u00e1sobku provozn\u00ed rychlosti (sub-synchronn\u00ed), obvykle jakmile rychlost p\u0159ekro\u010d\u00ed zhruba dvojn\u00e1sobek prvn\u00ed <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/critical-speed\/\">kritick\u00e1 rychlost<\/a>, a projevuje se jako sub-synchronn\u00ed vibrace s vysokou amplitudou, kter\u00e9 se s rostouc\u00ed rychlost\u00ed zhor\u0161uj\u00ed. \u00dapravy konstrukce lo\u017eisek, p\u0159id\u00e1n\u00ed <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/preload\/\">p\u0159edp\u011bt\u00ed<\/a>, p\u0159\u00edpadn\u011b nastaven\u00ed odsazen\u00ed jsou obvykl\u00e1 \u0159e\u0161en\u00ed.<\/p>\n<h3>Olejov\u00e9 bi\u010dov\u00e1n\u00ed (z\u00e1va\u017en\u00e1 nestabilita)<\/h3>\n<p>Olejov\u00fd r\u00e1z je nebezpe\u010dn\u00e1, pln\u011b rozvinut\u00e1 forma olejov\u00e9ho v\u00edru. Jak rotor zrychluje, frekvence v\u00edru stoup\u00e1, dokud se neusad\u00ed na prvn\u00ed vlastn\u00ed frekvenci, a pot\u00e9 na n\u00ed setrv\u00e1 bez ohledu na dal\u0161\u00ed zvy\u0161ov\u00e1n\u00ed ot\u00e1\u010dek. V\u00fdsledkem je velmi vysok\u00e1 amplituda p\u0159i konstantn\u00ed frekvenci, kter\u00e1 je schopn\u00e1 b\u011bhem n\u011bkolika minut zni\u010dit lo\u017eiska a h\u0159\u00eddel. Pr\u00e1v\u011b p\u0159echod od zvl\u00e1dnuteln\u00e9ho v\u00edru k destruktivn\u00edmu r\u00e1zu je d\u016fvodem, pro\u010d nesm\u00ed b\u00fdt nestabilita nikdy tolerov\u00e1na.<\/p>\n<h3>V\u00edr p\u00e1ry a aerodynamick\u00e9 nestability<\/h3>\n<p><a href=\"https:\/\/vibromera.eu\/cs\/glossary\/steam-whirl\/\">Parn\u00ed v\u00edr<\/a> k tomuto jevu doch\u00e1z\u00ed v parn\u00edch turb\u00edn\u00e1ch vybaven\u00fdch labyrintov\u00fdmi t\u011bsn\u011bn\u00edmi, kde aerodynamick\u00e9 s\u00edly zp\u016fsoben\u00e9 vz\u00e1jemn\u00fdm p\u016fsoben\u00edm v mezer\u00e1ch t\u011bsn\u011bn\u00ed vyvol\u00e1vaj\u00ed p\u0159i vysok\u00fdch tlakov\u00fdch rozd\u00edlech subsynchronn\u00ed kmit\u00e1n\u00ed v bl\u00edzkosti vlastn\u00ed frekvence. Typick\u00fdmi \u0159e\u0161en\u00edmi jsou v\u00edrov\u00e9 brzdy, za\u0159\u00edzen\u00ed proti v\u00ed\u0159en\u00ed a upraven\u00e1 geometrie t\u011bsn\u011bn\u00ed.<\/p>\n<h3>Bi\u010dov\u00e1n\u00ed h\u0159\u00eddele<\/h3>\n<p><a href=\"https:\/\/vibromera.eu\/cs\/glossary\/shaft-whip\/\">Bi\u010dov\u00e1n\u00ed h\u0159\u00eddele<\/a> je obecn\u00fd pojem pro n\u011bkolik mechanism\u016f se samovzbuditelnost\u00ed, v\u010detn\u011b vnit\u0159n\u00edho (hysterezn\u00edho) tlumen\u00ed v materi\u00e1lu h\u0159\u00eddele, t\u0159en\u00ed vznikaj\u00edc\u00edho v t\u011bsn\u011bn\u00ed nebo p\u0159i styku, a aerodynamick\u00fdch \u010di hydrodynamick\u00fdch sil vz\u00e1jemn\u00e9ho p\u016fsoben\u00ed. \u0160ir\u0161\u00ed skupina <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/whirl\/\">v\u00edr a r\u00e1z<\/a> v\u0161echny tyto jevy maj\u00ed spole\u010dn\u00fd stejn\u00fd mechanismus samoudr\u017eiteln\u00e9ho p\u0159enosu energie.<\/p>\n<h2>3. Charakteristick\u00e9 rysy a p\u0159\u00edznaky<\/h2>\n<h3>Charakteristika vibrac\u00ed<\/h3>\n<p>Nestabilita zanech\u00e1v\u00e1 v datech charakteristick\u00e9 stopy:<\/p>\n<ul>\n<li><strong>Sub-synchronn\u00ed frekvence:<\/strong> dominantn\u00ed slo\u017eka p\u0159i rychlosti ni\u017e\u0161\u00ed ne\u017e 1\u00d7, obvykle kolem 0,4\u20130,5\u00d7.<\/li>\n<li><strong>Nez\u00e1vislost na rychlosti:<\/strong> Jakmile se nestabilita ustav\u00ed, frekvence z\u016fst\u00e1v\u00e1 nem\u011bnn\u00e1 i p\u0159i zm\u011bn\u00e1ch rychlosti.<\/li>\n<li><strong>Rychl\u00fd r\u016fst:<\/strong> Amplituda exponenci\u00e1ln\u011b stoup\u00e1 v okam\u017eiku, kdy je p\u0159ekro\u010dena prahov\u00e1 rychlost.<\/li>\n<li><strong>Vysok\u00e1 amplituda:<\/strong> m\u016f\u017ee dos\u00e1hnout 2\u201310n\u00e1sobku amplitudy b\u011b\u017en\u00fdch vibrac\u00ed zp\u016fsoben\u00fdch nevyv\u00e1\u017eenost\u00ed.<\/li>\n<li><strong>Precesn\u00ed pohyb vp\u0159ed:<\/strong> na <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/orbit\/\">ob\u011b\u017en\u00e1 dr\u00e1ha h\u0159\u00eddele<\/a> se ot\u00e1\u010d\u00ed ve stejn\u00e9m sm\u011bru jako samotn\u00e1 h\u0159\u00eddel.<\/li>\n<\/ul>\n<h3>Chov\u00e1n\u00ed p\u0159i n\u00e1stupu<\/h3>\n<p>Nestabilita je ur\u010dov\u00e1na prahovou rychlost\u00ed. Pod touto hodnotou je syst\u00e9m stabiln\u00ed a doch\u00e1z\u00ed pouze k vynucen\u00fdm vibrac\u00edm; na prahu sta\u010d\u00ed i mal\u00e9 naru\u0161en\u00ed k tomu, aby se nestabilita projevila; a nad touto hodnotou se nestabilita rychle rozv\u00edj\u00ed. V po\u010d\u00e1te\u010dn\u00ed f\u00e1zi provozu stroje m\u016f\u017ee doch\u00e1zet k p\u0159eru\u0161ovan\u00e9mu blik\u00e1n\u00ed, ne\u017e se syst\u00e9m ust\u00e1l\u00ed do trval\u00e9, zesiluj\u00edc\u00ed se oscilace.<\/p>\n<h2>4. Diagnostick\u00e1 identifikace<\/h2>\n<p>Kl\u00ed\u010dem k diagn\u00f3ze je odli\u0161en\u00ed samovzbuditeln\u00e9 nestability od b\u011b\u017en\u00fdch vynucen\u00fdch kmit\u016f. Rozd\u00edl je z\u0159ejm\u00fd:<\/p>\n<table border=\"1\" style=\"width:100%; border-collapse:collapse;\">\n<tr>\n<th>Charakteristika<\/th>\n<th>Nevyv\u00e1\u017eenost (vynucen\u00e1)<\/th>\n<th>Nestabilita (samovzbuditeln\u00e1)<\/th>\n<\/tr>\n<tr>\n<td>Frekvence<\/td>\n<td>1\u00d7 ot\u00e1\u010dkov\u00e1 frekvence<\/td>\n<td>Subsynchronn\u00ed (\u010dasto ~0,45\u00d7)<\/td>\n<\/tr>\n<tr>\n<td>Amplituda versus rychlost<\/td>\n<td>Plynule se zvy\u0161uje s rychlost\u00ed\u00b2<\/td>\n<td>N\u00e1hl\u00fd n\u00e1stup p\u0159i p\u0159ekro\u010den\u00ed prahov\u00e9 hodnoty<\/td>\n<\/tr>\n<tr>\n<td>Reakce na vyva\u017eov\u00e1n\u00ed<\/td>\n<td>Sn\u00ed\u017een\u00e9 vibrace<\/td>\n<td>\u017d\u00e1dn\u00e9 zlep\u0161en\u00ed<\/td>\n<\/tr>\n<tr>\n<td>Frekvence versus rychlost<\/td>\n<td>Sleduje rychlost (konstantn\u00ed \u0159\u00e1d)<\/td>\n<td>Konstantn\u00ed frekvence (zm\u011bna po\u0159ad\u00ed)<\/td>\n<\/tr>\n<tr>\n<td>Chov\u00e1n\u00ed p\u0159i vypnut\u00ed<\/td>\n<td>Sni\u017euje se s rychlost\u00ed<\/td>\n<td>M\u016f\u017ee kr\u00e1tce p\u0159etrv\u00e1vat i po poklesu rychlosti<\/td>\n<\/tr>\n<\/table>\n<h3>Potvrzen\u00ed nestability<\/h3>\n<p>N\u011bkolik metod tuto ot\u00e1zku jednozna\u010dn\u011b vy\u0159e\u0161\u00ed. <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/order-analysis\/\">\u0158\u00e1dov\u00e1 anal\u00fdza<\/a> ukazuje, jak si sou\u010d\u00e1stka udr\u017euje konstantn\u00ed frekvenci, zat\u00edmco se m\u011bn\u00ed jej\u00ed \u0159\u00e1d; a <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/waterfall-plot\/\">vodop\u00e1dov\u00fd graf<\/a> ukazuje frekven\u010dn\u00ed k\u0159ivku, kter\u00e1 nereaguje na zm\u011bnu rychlosti; vyv\u00e1\u017een\u00ed nem\u00e1 \u017e\u00e1dn\u00fd vliv na sub-synchronn\u00ed \u0161pi\u010dku; a <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/orbit\/\">anal\u00fdza ob\u011b\u017en\u00e9 dr\u00e1hy<\/a> vykazuje precesi vp\u0159ed p\u0159i vlastn\u00ed frekvenci. P\u0159enosn\u00fd dvoukan\u00e1lov\u00fd analyz\u00e1tor, jako je nap\u0159\u00edklad <a href=\"https:\/\/vibromera.eu\/cs\/produkt\/balanset-1\/\">Balanset-1A<\/a> je ide\u00e1ln\u00ed pro sb\u011br t\u011bchto \u00fadaj\u016f p\u0159\u00edmo v ter\u00e9nu \u2013 zaznamen\u00e1v\u00e1 subsynchronn\u00ed slo\u017eku, n\u00e1r\u016fst jej\u00ed amplitudy s rychlost\u00ed a sign\u00e1l 1\u00d7 vedle sebe \u2013, tak\u017ee technik m\u016f\u017ee rozli\u0161it skute\u010dnou nestabilitu od prost\u00e9ho nevyv\u00e1\u017een\u00ed, ne\u017e se rozhodne, zda m\u00e1 v\u016fbec smysl se o vyv\u00e1\u017een\u00ed pokou\u0161et. Potvrzen\u00ed, \u017ee se jedn\u00e1 o samovzbuditelnou poruchu, zabr\u00e1n\u00ed n\u00e1kladn\u00e9 chyb\u011b, kdy by se technik pokou\u0161el vyv\u00e1\u017eit probl\u00e9m, kter\u00fd vyv\u00e1\u017een\u00edm nelze vy\u0159e\u0161it.<\/p>\n<h2>5. Prevence a zm\u00edr\u0148ov\u00e1n\u00ed n\u00e1sledk\u016f<\/h2>\n<h3>\u00davahy o designu<\/h3>\n<ul>\n<li><strong>Dostate\u010dn\u00e9 tlumen\u00ed:<\/strong> lo\u017eiskov\u00e9 syst\u00e9my mus\u00ed zajistit dostate\u010dnou <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/damping\/\">tlumen\u00ed<\/a> aby se zabr\u00e1nilo vzniku nestability.<\/li>\n<li><strong>V\u00fdb\u011br lo\u017eiska:<\/strong> vyberte typy a proveden\u00ed s dobr\u00fdm vlastn\u00edm tlumen\u00ed, jako jsou lo\u017eiska s nakl\u00e1p\u011bc\u00edmi podlo\u017ekami nebo p\u0159edpjat\u00e1 lo\u017eiska.<\/li>\n<li><strong>Optimalizace tuhosti:<\/strong> nastavit p\u0159im\u011b\u0159enou v\u016fli mezi h\u0159\u00eddel\u00ed a lo\u017eiskem <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/stiffness\/\">tuhost<\/a> pom\u011bry.<\/li>\n<li><strong>Rezerva provozn\u00ed rychlosti:<\/strong> navrhnout stroj tak, aby pracoval p\u0159i ot\u00e1\u010dk\u00e1ch ni\u017e\u0161\u00edch, ne\u017e je prahov\u00e1 hodnota nestability.<\/li>\n<\/ul>\n<h3>Konstruk\u010dn\u00ed \u0159e\u0161en\u00ed lo\u017eisek<\/h3>\n<ul>\n<li><strong>Lo\u017eiska s nakl\u00e1p\u011bc\u00edmi podlo\u017ekami:<\/strong> p\u0159irozen\u011b stabiln\u00ed, standardn\u00ed volba pro vysokorychlostn\u00ed provoz.<\/li>\n<li><strong>Lo\u017eiska s tlakov\u00fdm tlumen\u00edm:<\/strong> upraven\u00e1 geometrie, kter\u00e1 zvy\u0161uje \u00fa\u010dinn\u00e9 tlumen\u00ed.<\/li>\n<li><strong>P\u0159edp\u011bt\u00ed lo\u017eiska:<\/strong> zvy\u0161uje tuhost a tlumen\u00ed a posouv\u00e1 mezn\u00ed rychlost.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/cs\/glossary\/squeeze-film-damper\/\">Tlumi\u010de s tlakov\u00fdm filmem<\/a>:<\/strong> vn\u011bj\u0161\u00ed tlumic\u00ed prvky namontovan\u00e9 kolem lo\u017eisek.<\/li>\n<\/ul>\n<h3>Provozn\u00ed \u0159e\u0161en\u00ed<\/h3>\n<ul>\n<li><strong>Rychlostn\u00ed omezen\u00ed:<\/strong> omezit maxim\u00e1ln\u00ed rychlost pod stanovenou hranici.<\/li>\n<li><strong>Zv\u00fd\u0161en\u00ed z\u00e1t\u011b\u017ee:<\/strong> vy\u0161\u0161\u00ed zat\u00ed\u017een\u00ed lo\u017eisek m\u016f\u017ee zv\u011bt\u0161it rezervu stability.<\/li>\n<li><strong>Regulace teploty:<\/strong> Teplota oleje ur\u010duje viskozitu a viskozita zase tlumen\u00ed.<\/li>\n<li><strong>Nep\u0159etr\u017eit\u00e9 monitorov\u00e1n\u00ed:<\/strong> V\u010dasn\u00e9 odhalen\u00ed poskytuje \u010das na odstaven\u00ed za\u0159\u00edzen\u00ed d\u0159\u00edve, ne\u017e dojde ke \u0161kod\u00e1m.<\/li>\n<\/ul>\n<h2>6. Reakce na mimo\u0159\u00e1dn\u00e9 ud\u00e1losti a anal\u00fdza stability<\/h2>\n<p>Pokud se b\u011bhem provozu objev\u00ed nestabilita, postup je jednozna\u010dn\u00fd:<\/p>\n<ol>\n<li><strong>Jednejte okam\u017eit\u011b:<\/strong> sni\u017ete rychlost nebo okam\u017eit\u011b zastavte.<\/li>\n<li><strong>Nepokou\u0161ejte se prov\u00e1d\u011bt vyva\u017eov\u00e1n\u00ed:<\/strong> to nestabilitu nevy\u0159e\u0161\u00ed a jen t\u00edm ztr\u00e1c\u00edme drahocenn\u00fd \u010das.<\/li>\n<li><strong>Zaznamenejte podm\u00ednky:<\/strong> zaznamenejte po\u010d\u00e1te\u010dn\u00ed rychlost, frekvenci a v\u00fdvoj amplitudy.<\/li>\n<li><strong>Zjist\u011bte p\u0159\u00ed\u010dinu probl\u00e9mu:<\/strong> ur\u010dit, kter\u00fd mechanismus \u2013 olejov\u00fd v\u00edr, bi\u010d, parn\u00ed v\u00edr nebo bi\u010d poh\u00e1n\u011bn\u00fd t\u0159en\u00edm \u2013 zde p\u016fsob\u00ed.<\/li>\n<li><strong>Prove\u010fte opravu:<\/strong> p\u0159izp\u016fsobte tomu lo\u017eiska, t\u011bsn\u011bn\u00ed nebo provozn\u00ed podm\u00ednky.<\/li>\n<li><strong>Ov\u011b\u0159te opravu:<\/strong> postupn\u011b obnovit provoz, a to pod pe\u010dliv\u00fdm dohledem.<\/li>\n<\/ol>\n<p>In\u017een\u00fd\u0159i p\u0159edv\u00eddaj\u00ed nestabilitu a eliminuj\u00ed ji pomoc\u00ed form\u00e1ln\u00ed anal\u00fdzy stability. To zahrnuje v\u00fdpo\u010det vlastn\u00edch \u010d\u00edsel <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/rotor-bearing-system\/\">soustava rotor-lo\u017eiska<\/a>: Re\u00e1ln\u00e1 \u010d\u00e1st ka\u017ed\u00e9 vlastn\u00ed hodnoty signalizuje stabilitu \u2013 z\u00e1porn\u00e1 hodnota znamen\u00e1 stabilitu, kladn\u00e1 nestabilitu \u2013, zat\u00edmco v\u00fdpo\u010det ur\u010duje mezn\u00ed ot\u00e1\u010dky, p\u0159i nich\u017e se stabilita m\u011bn\u00ed. Tato pr\u00e1ce se obvykle op\u00edr\u00e1 o specializovan\u00fd software pro dynamiku rotor\u016f a slou\u017e\u00ed jako podklad pro konstruk\u010dn\u00ed rozhodnut\u00ed, kter\u00e1 zaru\u010duj\u00ed dostate\u010dn\u00e9 rezervy stability. A\u010dkoli je nestabilita rotoru mnohem m\u00e9n\u011b \u010dast\u00e1 ne\u017e nevyv\u00e1\u017eenost nebo nesouosost, pat\u0159\u00ed mezi nejz\u00e1va\u017en\u011bj\u0161\u00ed vibra\u010dn\u00ed stavy v rotuj\u00edc\u00edch stroj\u00edch a rozpozn\u00e1n\u00ed jej\u00edch mechanism\u016f a p\u0159\u00edznak\u016f je nezbytnou dovednost\u00ed pro ka\u017ed\u00e9ho, kdo pracuje s vysokorychlostn\u00edm za\u0159\u00edzen\u00edm.<\/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 nestabilitou rotoru, co\u017e je nebezpe\u010dn\u00fd stav samobuzen\u00fdch vibrac\u00ed, kdy energie z rotace udr\u017euje nebo zesiluje kmit\u00e1n\u00ed, co\u017e vede k potenci\u00e1ln\u00edmu katastrofick\u00e9mu selh\u00e1n\u00ed.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,111],"tags":[],"class_list":["post-219","glossary","type-glossary","status-publish","hentry","category-glossary","category-rotor-balancing"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/glossary\/219","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\/219\/revisions"}],"predecessor-version":[{"id":101404,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/glossary\/219\/revisions\/101404"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/media?parent=219"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/categories?post=219"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/tags?post=219"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}