{"id":122,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/forced-vibration\/"},"modified":"2026-05-23T22:43:10","modified_gmt":"2026-05-23T22:43:10","slug":"forced-vibration","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/fi\/glossary\/forced-vibration\/","title":{"rendered":"Mik\u00e4 on pakotettu v\u00e4r\u00e4htely? Ulkoisen her\u00e4tteen vaste"},"content":{"rendered":"<h1>Pakotetun v\u00e4r\u00e4htelyn ymm\u00e4rt\u00e4minen<\/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\/fi\/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\/fi\/product\/balanset-1\/\" title=\"Kannettava tasapainotin ja t\u00e4rin\u00e4analysaattori 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=\"Balanset-1A kannettava tasapainotin ja v\u00e4r\u00e4htelyanalysaattori, t\u00e4ydellinen sarja\" 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\/fi\/product-category\/devices\/\" rel=\"tag\">Laitteet<\/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\/fi\/product\/balanset-1\/\" title=\"Kannettava tasapainotin ja t\u00e4rin\u00e4analysaattori Balanset-1A\">Kannettava tasapainotin &#038; t\u00e4rin\u00e4analysaattori 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\">&euro;<\/span>1,975.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/122?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/122?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=\"Lis\u00e4\u00e4 ostoskoriin: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/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\/fi\/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\/fi\/product\/vibration-sensor\/\" title=\"T\u00e4rin\u00e4anturi\">\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=\"Balanset-1A:n t\u00e4rin\u00e4anturin l\u00e4hikuva\" 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\/fi\/product-category\/parts\/\" rel=\"tag\">Osat<\/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\/fi\/product\/vibration-sensor\/\" title=\"T\u00e4rin\u00e4anturi\">T\u00e4rin\u00e4anturi<\/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\">&euro;<\/span>90.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/122?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/122?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=\"Lis\u00e4\u00e4 ostoskoriin: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/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\/fi\/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\/fi\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optinen anturi (lasertakometri)\">\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=\"Optinen anturi (lasertakometri)\" 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\/fi\/product-category\/parts\/\" rel=\"tag\">Osat<\/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\/fi\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optinen anturi (lasertakometri)\">Optinen anturi (lasertakometri)<\/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\">&euro;<\/span>124.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/122?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/122?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=\"Lis\u00e4\u00e4 ostoskoriin: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/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\/fi\/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\/fi\/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=\"Vibromera-roottorin tasapainotussarja: kantolaukku, monikanavainen signaalimuunnin, k\u00e4dess\u00e4 pidett\u00e4v\u00e4 analysaattori, magneettijalusta, t\u00e4rin\u00e4anturit ja kierretyt kaapelit.\" 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\/fi\/product-category\/devices\/\" rel=\"tag\">Laitteet<\/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\/fi\/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\">&euro;<\/span>6,803.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/122?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/122?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=\"Lis\u00e4\u00e4 ostoskoriin: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/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\/fi\/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\/fi\/product\/magnet-stand\/\" title=\"Magneettinen jalusta 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=\"Magneettipohja.\" 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\/fi\/product-category\/parts\/\" rel=\"tag\">Osat<\/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\/fi\/product\/magnet-stand\/\" title=\"Magneettinen jalusta Insize-60-kgf\">Magneettinen jalusta 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\">&euro;<\/span>46.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/122?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/122?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=\"Lis\u00e4\u00e4 ostoskoriin: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/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\/fi\/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\/fi\/product\/reflective-tape\/\" title=\"Heijastava nauha\">\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=\"Heijastava nauha\" 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\/fi\/product-category\/parts\/\" rel=\"tag\">Osat<\/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\/fi\/product\/reflective-tape\/\" title=\"Heijastava nauha\">Heijastava nauha<\/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\">&euro;<\/span>10.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/122?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/122?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=\"Lis\u00e4\u00e4 ostoskoriin: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/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\/fi\/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\/fi\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynaaminen tasapainotin &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=\"Balanset-1A-pakkauksen sis\u00e4lt\u00f6, jossa on liit\u00e4nt\u00e4yksikk\u00f6, anturit, kierroslukumittari ja lis\u00e4varusteet\" 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\/fi\/product-category\/devices\/\" rel=\"tag\">Laitteet<\/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\/fi\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynaaminen tasapainotin &quot;Balanset-1A&quot; OEM\">Dynaaminen tasapainotin \"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\">&euro;<\/span>1,735.00<\/span> + ALV (jos sovellettavissa)<\/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=\"\/fi\/wp-json\/wp\/v2\/glossary\/122?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=\"Lis\u00e4\u00e4 ostoskoriin\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Lis\u00e4\u00e4 ostoskoriin\" 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=\"\/fi\/wp-json\/wp\/v2\/glossary\/122?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=\"Lis\u00e4\u00e4 ostoskoriin: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d on lis\u00e4tty ostoskoriin\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Lis\u00e4\u00e4 ostoskoriin<\/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>Pakotettu t\u00e4rin\u00e4<\/strong> on mekaaniseen j\u00e4rjestelm\u00e4\u00e4n vaikuttavan ulkoisen jaksollisen voiman aiheuttama v\u00e4r\u00e4htelyliike. V\u00e4r\u00e4htely tapahtuu kohdistetun voiman taajuudella \u2013 v\u00e4r\u00e4htelytaajuudella \u2013 ja sen amplitudi on verrannollinen kyseisen voiman suuruuteen ja k\u00e4\u00e4nt\u00e4en verrannollinen j\u00e4rjestelm\u00e4n vastukseen kyseisell\u00e4 taajuudella. Valtaosa <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/vibration\/\">t\u00e4rin\u00e4<\/a> py\u00f6riviss\u00e4 koneissa esiintyy pakotettua t\u00e4rin\u00e4\u00e4, jonka tavallisimpia syit\u00e4 ovat <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/unbalance\/\">ep\u00e4tasapaino<\/a> (py\u00f6riv\u00e4 keskipakovoima), <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/misalignment\/\">ep\u00e4kohdistus<\/a> (kytkent\u00e4voimat) sek\u00e4 aerodynaamiset tai hydrauliset v\u00e4r\u00e4htelyt. Pakotettu v\u00e4r\u00e4htely eroaa olennaisesti <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/self-excited-vibration\/\">itsevirittyv\u00e4 v\u00e4r\u00e4htely<\/a>, jossa j\u00e4rjestelm\u00e4 synnytt\u00e4\u00e4 ja yll\u00e4pit\u00e4\u00e4 omaa v\u00e4r\u00e4htely\u00e4\u00e4n, sek\u00e4 vapaasta v\u00e4r\u00e4htelyst\u00e4, eli impulssin j\u00e4lkeisest\u00e4 v\u00e4liaikaisesta vaimenemisvaiheesta. N\u00e4iden periaatteiden ymm\u00e4rt\u00e4minen on t\u00e4rke\u00e4\u00e4, koska ne selitt\u00e4v\u00e4t, miten v\u00e4r\u00e4htelyn amplitudi liittyy vian vakavuuteen ja miten v\u00e4r\u00e4htely\u00e4 voidaan hallita \u2014 joko v\u00e4hent\u00e4m\u00e4ll\u00e4 vaikuttavaa voimaa tai muokkaamalla j\u00e4rjestelm\u00e4n vastetta.<\/p>\n<h2>1. Pakotetun t\u00e4rin\u00e4n ominaisuudet<\/h2>\n<h3>Taajuuksien sovitus<\/h3>\n<ul>\n<li>V\u00e4r\u00e4htelytaajuus on sama kuin her\u00e4tetaajuus \u2013 kun j\u00e4rjestelm\u00e4\u00e4 her\u00e4tet\u00e4\u00e4n 30 Hz:n taajuudella, se v\u00e4r\u00e4htelee 30 Hz:n taajuudella.<\/li>\n<li>T\u00e4m\u00e4 eroaa itsest\u00e4\u00e4n her\u00e4\u00e4v\u00e4st\u00e4 v\u00e4r\u00e4htelyst\u00e4, joka lukittuu <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/natural-frequency\/\">ominaistaajuus<\/a> her\u00e4tetaajuudesta riippumatta.<\/li>\n<li>Taajuus voidaan siten m\u00e4\u00e4ritt\u00e4\u00e4 suoraan vaikuttavan tekij\u00e4n perusteella.<\/li>\n<\/ul>\n<h3>Amplitudin suhteellisuus<\/h3>\n<ul>\n<li>V\u00e4r\u00e4htelyn amplitudi on verrannollinen voiman suuruuteen: kaksinkertaistamalla voiman (lineaarisessa j\u00e4rjestelm\u00e4ss\u00e4) kaksinkertaistat v\u00e4r\u00e4htelyn.<\/li>\n<li>Kun poistat pakotteen, t\u00e4rin\u00e4 lakkaa \u2013 ja juuri siksi sit\u00e4 voidaan hallita.<\/li>\n<\/ul>\n<h3>Vaihesuhde<\/h3>\n<ul>\n<li>T\u00e4m\u00e4 on selv\u00e4 <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/phase\/\">vaihe<\/a> suhde voiman ja vasteen v\u00e4lill\u00e4.<\/li>\n<li>T\u00e4m\u00e4 vaihe riippuu pakotetaajuudesta suhteessa ominaistaajuuteen:<\/li>\n<li><strong>Resonanssin alapuolella:<\/strong> v\u00e4r\u00e4htely on k\u00e4yt\u00e4nn\u00f6ss\u00e4 samassa vaiheessa voiman kanssa.<\/li>\n<li><strong>At resonance:<\/strong> 90 asteen vaihesiirto.<\/li>\n<li><strong>Resonanssin yl\u00e4puolella:<\/strong> 180 asteen vaiheviive.<\/li>\n<\/ul>\n<h3>Vakaus<\/h3>\n<ul>\n<li>J\u00e4rjestelm\u00e4 on vakaa: v\u00e4r\u00e4htely on rajallista eik\u00e4 kasva rajattomasti.<\/li>\n<li>V\u00e4r\u00e4htelyn amplitudi m\u00e4\u00e4r\u00e4ytyy yhdess\u00e4 her\u00e4tteen ja j\u00e4rjestelm\u00e4n vasteen perusteella \u2014 toisin kuin ep\u00e4stabiilissa itsest\u00e4\u00e4n her\u00e4tt\u00e4v\u00e4ss\u00e4 v\u00e4r\u00e4htelyss\u00e4, joka voi kiihty\u00e4 rajattomasti, kunnes ep\u00e4lineaarisuus pys\u00e4ytt\u00e4\u00e4 sen.<\/li>\n<\/ul>\n<h2>2. Yleisimm\u00e4t pakotustoiminnot koneissa<\/h2>\n<h3>Ep\u00e4tasapaino \u2014 1\u00d7 pakottava voima<\/h3>\n<ul>\n<li><strong>Voima:<\/strong> massan ep\u00e4keskisyydest\u00e4 johtuva py\u00f6riv\u00e4 keskipakovoima.<\/li>\n<li><strong>Taajuus:<\/strong> kerran kierrosta kohti (1\u00d7 akselin kierrosnopeus).<\/li>\n<li><strong>Suuruus:<\/strong> F = m\u00b7r\u00b7\u03c9\u00b2, joten se kasvaa <em>neli\u00f6<\/em> of speed.<\/li>\n<li><strong>Merkitys:<\/strong> useimpien py\u00f6rivien laitteiden t\u00e4rkein t\u00e4rin\u00e4n l\u00e4hde.<\/li>\n<\/ul>\n<p>T\u00e4t\u00e4 \u03c9\u00b2-riippuvuutta kannattaa tarkastella tarkemmin: py\u00f6rimisnopeuden kaksinkertaistaminen nelinkertaistaa ep\u00e4tasapainovoiman, mink\u00e4 vuoksi roottori, joka py\u00f6rii hiljaisesti alhaisella nopeudella, voi t\u00e4rist\u00e4 voimakkaasti, kun se nostetaan t\u00e4yteen k\u00e4yntinopeuteen. Voit laskea t\u00e4m\u00e4n tarkemmin k\u00e4ytt\u00e4m\u00e4ll\u00e4 <a href=\"https:\/\/vibromera.eu\/fi\/calculators\/centrifugal-force-unbalance\/\">Ep\u00e4tasapainon aiheuttaman keskipakoisvoiman laskuri<\/a>.<\/p>\n<h3>Muut t\u00e4rkeimm\u00e4t l\u00e4hteet<\/h3>\n<ul>\n<li><strong>Kohdistusvirhe \u2014 2\u00d7 pakottava voima:<\/strong> kulma- tai pituussuuntaisen siirtym\u00e4n aiheuttamat kytkent\u00e4voimat, jotka tuottavat t\u00e4rin\u00e4\u00e4 kaksinkertaisella akselin py\u00f6rimisnopeudella ja tyypillisesti korkean <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/axial-vibration\/\">aksiaalinen<\/a> komponentti.<\/li>\n<li><strong>Aerodynaaminen \/ hydraulinen (siipien tai siipipy\u00f6r\u00e4n ohitus):<\/strong> paineen vaihtelut, jotka johtuvat siipien ja staattorin v\u00e4lisest\u00e4 vuorovaikutuksesta ja jotka ovat suhteessa siipien lukum\u00e4\u00e4r\u00e4\u00e4n kertaa akselin py\u00f6rimisnopeus \u2014 tyypillinen piirre tuulettimille, pumpuille ja kompressoreille, joiden k\u00e4ytt\u00f6voimana toimii <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/aerodynamic-forces\/\">aerodynamic<\/a> ja <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/hydraulic-forces\/\">hydrauliset voimat<\/a>.<\/li>\n<li><strong>Hammaspy\u00f6rien v\u00e4liset voimat:<\/strong> hampaiden kytkeytyminen aiheuttaa jaksottaisen kuormituksen, joka on hampaiden lukum\u00e4\u00e4r\u00e4n ja akselin py\u00f6rimisnopeuden tulo ( <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/gear-mesh-frequency\/\">hammaspy\u00f6r\u00e4n kytkent\u00e4taajuus<\/a>), jonka suuruus riippuu v\u00e4litetyst\u00e4 v\u00e4\u00e4nt\u00f6momentista ja hampaiden laadusta.<\/li>\n<li><strong>S\u00e4hk\u00f6magneettiset voimat:<\/strong> moottoreiden ja generaattoreiden magneettikent\u00e4n v\u00e4r\u00e4htelyt, joiden taajuus on kaksinkertainen verkkoj\u00e4nnitteen taajuuteen verrattuna (120 Hz 60 Hz:n verkossa, 100 Hz 50 Hz:n verkossa) \u2014 erityisesti mekaanisesta py\u00f6rimisnopeudesta riippumattomat, asynkroninen pakote.<\/li>\n<\/ul>\n<h2>3. Reaktio pakotukseen: j\u00e4rjestelm\u00e4n k\u00e4ytt\u00e4ytyminen<\/h2>\n<p>Sama voima tuottaa hyvin erilaisia amplitudeja riippuen siit\u00e4, miss\u00e4 suhteessa voiman taajuus on j\u00e4rjestelm\u00e4n ominaistaajuuteen n\u00e4hden. Ilmi\u00f6t\u00e4 kuvataan kolmella alueella.<\/p>\n<h3>Ominaistaajuuden alapuolella (j\u00e4ykkyysohjattu)<\/h3>\n<ul>\n<li>Amplitudi \u2248 Voima \u00f7 <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/stiffness\/\">J\u00e4ykkyys<\/a>.<\/li>\n<li>Vaste on samassa vaiheessa kuin \u00e4rsyke.<\/li>\n<li>Nopeudesta riippuvien voimien amplitudi kasvaa nopeuden kasvaessa.<\/li>\n<li>Useimpien laitteiden tyypillinen toiminta-alue <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/rigid-rotor\/\">j\u00e4yk\u00e4t roottorit<\/a>.<\/li>\n<\/ul>\n<h3>Omav\u00e4r\u00e4htelytaajuudella (resonanssissa)<\/h3>\n<ul>\n<li>V\u00e4r\u00e4htelyn amplitudi \u2248 Voima \u00f7 (vaimennus \u00d7 omav\u00e4r\u00e4htelytaajuus).<\/li>\n<li>Kerrotaan Q-kertoimella, joka on tyypillisesti 10\u201350-kertainen.<\/li>\n<li>90 asteen vaihesiirto ja pienet voimat aiheuttavat nyt voimakasta t\u00e4rin\u00e4\u00e4.<\/li>\n<li><a href=\"https:\/\/vibromera.eu\/fi\/glossary\/damping\/\">Vaimennus<\/a> on ainoa tekij\u00e4, joka rajoittaa amplitudia \u2014 sen k\u00e4yt\u00e4nn\u00f6n merkitys <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/resonance\/\">resonanssi<\/a>.<\/li>\n<\/ul>\n<h3>Ominaistaajuuden yl\u00e4puolella (massavetoinen)<\/h3>\n<ul>\n<li>Amplitudi \u2248 Voima \u00f7 (Massa \u00d7 Taajuus\u00b2).<\/li>\n<li>180 asteen vaiheviive \u2013 v\u00e4r\u00e4htely liikkuu voiman suuntaan n\u00e4hden vastakkaiseen suuntaan.<\/li>\n<li>Amplitudi pienenee taajuuden kasvaessa.<\/li>\n<li>Toiminta-alue <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/flexible-rotor\/\">joustavat roottorit<\/a> niiden yl\u00e4puolella <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/critical-speed\/\">kriittiset nopeudet<\/a>.<\/li>\n<\/ul>\n<h2>4. Pakotettu t\u00e4rin\u00e4 vs. muut tyypit<\/h2>\n<h3>Pakotettu v\u00e4r\u00e4htely vs. vapaa v\u00e4r\u00e4htely<\/h3>\n<ul>\n<li><strong>Pakotettu:<\/strong> Jatkuva pakottaminen, jatkuva v\u00e4r\u00e4htely pakottamisen taajuudella<\/li>\n<li><strong>Vapaa:<\/strong> impulssivaste, joka vaimenee ominaisv\u00e4r\u00e4htelytaajuudella.<\/li>\n<li><strong>Esimerkki:<\/strong> a <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/bump-test\/\">bump-testi<\/a> aiheuttaa vapaata v\u00e4r\u00e4htely\u00e4; k\u00e4ynniss\u00e4 oleva kone aiheuttaa pakotettua v\u00e4r\u00e4htely\u00e4.<\/li>\n<\/ul>\n<h3>Pakotettu v\u00e4r\u00e4htely vs. itsest\u00e4\u00e4n syntyv\u00e4 v\u00e4r\u00e4htely<\/h3>\n<ul>\n<li><strong>Pakotettu:<\/strong> ulkoinen voima, amplitudi suhteessa kyseiseen voimaan, vakaa.<\/li>\n<li><strong>Self-excited:<\/strong> sis\u00e4inen energial\u00e4hde, jonka amplitudi rajoittuu ainoastaan ep\u00e4lineaarisuuteen, ep\u00e4stabiili.<\/li>\n<li><strong>Esimerkkej\u00e4:<\/strong> ep\u00e4tasapaino on pakotettu; <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/oil-whirl\/\">\u00f6ljypy\u00f6rre<\/a> on itsest\u00e4\u00e4n virittyv\u00e4.<\/li>\n<\/ul>\n<h2>5. Hallinta ja lievent\u00e4minen<\/h2>\n<h3>V\u00e4henn\u00e4 pakotevoimaa (yleens\u00e4 paras vaihtoehto)<\/h3>\n<ul>\n<li><strong>Tasapainottaminen:<\/strong> v\u00e4hent\u00e4\u00e4 ep\u00e4tasapainon aiheuttamaa pakotevoimaa suoraan ja on yleisin korjaava toimenpide.<\/li>\n<li><strong>Kohdistuminen:<\/strong> v\u00e4hent\u00e4\u00e4 v\u00e4\u00e4r\u00e4n suuntauksen aiheuttamia voimia.<\/li>\n<li><strong>Korjattavat viat:<\/strong> korjaa voimia aiheuttavat mekaaniset ongelmat.<\/li>\n<li><strong>Tehokkain:<\/strong> poistamalla tai minimoimalla pakotel\u00e4hdett\u00e4 sen syntypaikalla.<\/li>\n<\/ul>\n<h3>Muokkaa j\u00e4rjestelm\u00e4n reagointia tai v\u00e4lt\u00e4 resonanssia<\/h3>\n<ul>\n<li><strong>Muuta j\u00e4ykkyytt\u00e4 tai massaa:<\/strong> Siirr\u00e4 luonnolliset taajuudet pois pakottavista taajuuksista<\/li>\n<li><strong>Lis\u00e4\u00e4 vaimennus:<\/strong> vaimentaa resonanssivahvistusta.<\/li>\n<li><strong>Eristys:<\/strong> v\u00e4hent\u00e4\u00e4 voiman siirtymist\u00e4 kantavaan rakenteeseen.<\/li>\n<li><strong>V\u00e4lt\u00e4 resonanssia:<\/strong> pid\u00e4 pakottavat taajuudet selv\u00e4sti erill\u00e4\u00e4n ominaisv\u00e4r\u00e4htelytaajuuksista noin \u00b120\u201330 %:n turvamarginaalilla, joka on varmistettu suunnitteluvaiheen analyysill\u00e4 ja jota valvotaan nopeusrajoituksilla, jos taajuuksien p\u00e4\u00e4llekk\u00e4isyys on v\u00e4ist\u00e4m\u00e4t\u00f6nt\u00e4.<\/li>\n<\/ul>\n<h2>6. K\u00e4yt\u00e4nn\u00f6n merkitys ja diagnoosi<\/h2>\n<p>Koska l\u00e4hes kaikki koneiden t\u00e4rin\u00e4 johtuu ulkoisista tekij\u00f6ist\u00e4 \u2013 ep\u00e4tasapainosta, suuntausvirheist\u00e4, hammaspy\u00f6rien kosketuksesta ja muista vastaavista \u2013 se on my\u00f6s ennustettavissa ja hallittavissa, ja tasapainotus- ja suuntausty\u00f6t toimivat juuri siksi, ett\u00e4 ne puuttuvat n\u00e4ihin t\u00e4rin\u00e4n aiheuttajiin. Diagnoosimenetelm\u00e4 on t\u00e4st\u00e4 suoraan johdettavissa: tunnistetaan spektrist\u00e4 t\u00e4rin\u00e4n taajuus, yhdistet\u00e4\u00e4n se tunnettuun l\u00e4hteeseen (1\u00d7, 2\u00d7, hammaspy\u00f6rien kosketus, siipien ohitus), diagnosoidaan kyseinen l\u00e4hde ja v\u00e4hennet\u00e4\u00e4n t\u00e4rin\u00e4\u00e4 asianmukaisilla huoltotoimenpiteill\u00e4.<\/p>\n<p>T\u00e4ss\u00e4 tilanteessa kentt\u00e4mittauslaitteet osoittavat arvonsa. Kannettava kaksikanavainen analysaattori, kuten <a href=\"https:\/\/vibromera.eu\/fi\/tuote\/balanset-1\/\">Balanset-1A<\/a> mittaa t\u00e4rin\u00e4\u00e4 <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/amplitude\/\">amplitudi<\/a> ja vaiheen mittaaminen k\u00e4yntinopeudella mahdollistaa spektrin tulkinnan, jonka avulla voidaan erottaa 1\u00d7-ep\u00e4tasapainohuippu 2\u00d7-kohdistusvirhehuipusta, ja \u2013 kun ep\u00e4tasapaino on tunnistettu hallitsevaksi pakotevoimaksi \u2013 korjata se v\u00e4litt\u00f6m\u00e4sti <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/kenttatasapaino\/\">kentt\u00e4tasapainotus<\/a> roottori omissa laakereissaan. Vaiheen ja amplitudin mittaaminen erottaa pakoteongelman resonanssiongelmasta, sill\u00e4 ne k\u00e4ytt\u00e4ytyv\u00e4t hyvin eri tavalla nopeuden muuttuessa.<\/p>\n<p>Pakotettu v\u00e4r\u00e4htely on py\u00f6rivien koneiden perusv\u00e4r\u00e4htelymuoto, joka syntyy aina, kun j\u00e4rjestelm\u00e4\u00e4n kohdistuu ulkoinen jaksollinen voima. Sen toimintaperiaatteiden ymm\u00e4rt\u00e4minen \u2013 taajuuksien yhteensopivuus, amplitudin suhteellisuus sek\u00e4 j\u00e4ykkyyden, vaimennuksen ja massan m\u00e4\u00e4ritt\u00e4m\u00e4t vastealueet \u2013 mahdollistaa v\u00e4r\u00e4htelyl\u00e4hteiden oikean diagnoosin, oikeiden korjaavien toimenpiteiden toteuttamisen (pakotteen v\u00e4hent\u00e4minen tai vasteen muokkaaminen) sek\u00e4 suunnittelustrategiat, joilla v\u00e4r\u00e4htely pidet\u00e4\u00e4n alhaisena v\u00e4hent\u00e4m\u00e4ll\u00e4 pakotetta ja v\u00e4ltt\u00e4m\u00e4ll\u00e4 resonanssia.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/fi\/glossary\/\">\u2190 Takaisin p\u00e4\u00e4hakemistoon<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Opi pakotetusta v\u00e4r\u00e4htelyst\u00e4, ulkoisten jaksollisten voimien, kuten ep\u00e4tasapainon tai linjausvirheen, aiheuttamasta v\u00e4r\u00e4htelyst\u00e4, jonka amplitudi on verrannollinen pakotteeseen ja taajuussovitukseen perustuvaan her\u00e4tteeseen.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-122","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/glossary\/122","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/glossary\/122\/revisions"}],"predecessor-version":[{"id":101335,"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/glossary\/122\/revisions\/101335"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/media?parent=122"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/categories?post=122"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/tags?post=122"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}