{"id":79,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/coastdown\/"},"modified":"2026-05-23T23:07:52","modified_gmt":"2026-05-23T23:07:52","slug":"coastdown","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/fi\/glossary\/coastdown\/","title":{"rendered":"Mit\u00e4 on rullaus py\u00f6rivien koneiden analyysiss\u00e4?"},"content":{"rendered":"<h1>Py\u00f6rivien koneiden alasajoanalyysin 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\/79?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\/79?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\/79?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\/79?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\/79?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\/79?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\/79?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\/79?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\/79?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\/79?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\/79?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\/79?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\/79?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\/79?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>Alasajo<\/strong> \u2014 jota kutsutaan my\u00f6s hidastukseksi tai hidastumiseksi \u2014 on prosessi, jossa py\u00f6riv\u00e4 kone hidastetaan k\u00e4yntinopeudesta pys\u00e4hdykseen ilman aktiivista jarrutusta, hy\u00f6dynt\u00e4en luonnollisia h\u00e4vi\u00f6it\u00e4, kuten kitkaa, ilmanvastusta ja laakerien vastusta. <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/rotor-dynamics\/\">roottorin dynamiikka<\/a> ja <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/vibration-analysis\/\">v\u00e4r\u00e4htelyanalyysi<\/a>, a coastdown <em>testi<\/em> on diagnostinen toimenpide, jossa <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/vibration\/\">t\u00e4rin\u00e4<\/a> tiedot tallennetaan jatkuvasti koneen hidastuessa, mik\u00e4 tuottaa runsaasti tietoa <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/critical-speed\/\">kriittiset nopeudet<\/a>, <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/natural-frequency\/\">ominaistaajuudet<\/a>, sek\u00e4 j\u00e4rjestelm\u00e4n dynaamisen luonteen. Yhdess\u00e4 peilikuvansa kanssa, <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/runup\/\">runup<\/a> T\u00e4m\u00e4 testi on keskeinen ty\u00f6kalu uusien laitteiden k\u00e4ytt\u00f6\u00f6notossa, vaikeasti ratkaistavien t\u00e4rin\u00f6iden vianetsinn\u00e4ss\u00e4 sek\u00e4 roottoridynamiikkamallien vertailussa todellisuudessa rakennettuun ja asennettuun koneeseen.<\/p>\n<h2>1. Tarkoitus ja k\u00e4ytt\u00f6kohteet<\/h2>\n<h3>Kriittisen nopeuden m\u00e4\u00e4ritt\u00e4minen<\/h3>\n<p>Coastdown-testausta k\u00e4ytet\u00e4\u00e4n ensisijaisesti kriittisten nopeuksien m\u00e4\u00e4ritt\u00e4miseen:<\/p>\n<ul>\n<li>kun nopeus laskee kunkin kriittisen nopeuden l\u00e4pi, t\u00e4rin\u00e4n amplitudi saavuttaa huippunsa;<\/li>\n<li>peaks in the <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/amplitude\/\">amplitudi<\/a>-nopeus-kuvaajassa merkit\u00e4\u00e4n kriittiset nopeudet;<\/li>\n<li>180 asteen k\u00e4\u00e4nt\u00f6 <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/phase\/\">vaihe<\/a> muutos vahvistaa asian paikkansapit\u00e4vyyden <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/resonance\/\">resonanssi<\/a> eik\u00e4 jostakin muusta nopeuteen liittyv\u00e4st\u00e4 tekij\u00e4st\u00e4; ja<\/li>\n<li>yhdell\u00e4 ajolla voidaan mitata useita kriittisi\u00e4 nopeuksia.<\/li>\n<\/ul>\n<h3>Ominaistaajuuden mittaus<\/h3>\n<p>Kriittiset nopeudet vastaavat ominaistaajuuksia:<\/p>\n<ul>\n<li>ensimm\u00e4inen kriittinen nopeus saavutetaan ensimm\u00e4isell\u00e4 ominaisv\u00e4r\u00e4htelytaajuudella, toinen kriittinen nopeus toisella ja niin edelleen;<\/li>\n<li>testi vahvistaa analyyttiset ennusteet kokeellisesti; ja<\/li>\n<li>sit\u00e4 k\u00e4ytet\u00e4\u00e4n laajalti \u00e4\u00e4rellisten elementtien mallien validointiin.<\/li>\n<\/ul>\n<h3>Vaimennuksen m\u00e4\u00e4ritt\u00e4minen<\/h3>\n<p>Kunkin resonanssipiikin ter\u00e4vyys paljastaa j\u00e4rjestelm\u00e4n <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/damping\/\">vaimennus<\/a>:<\/p>\n<ul>\n<li>ter\u00e4v\u00e4t, korkeat huiput viittaavat heikkoon vaimennukseen;<\/li>\n<li>leve\u00e4t, matalat huiput viittaavat voimakkaaseen vaimennukseen;<\/li>\n<li>... <a href=\"https:\/\/vibromera.eu\/fi\/calculators\/damping-ratio-calculator\/\">vaimennussuhde<\/a> voidaan laskea huipun leveydest\u00e4 ja amplitudista; ja<\/li>\n<li>T\u00e4m\u00e4 luku on ratkaisevan t\u00e4rke\u00e4 tulevan k\u00e4yt\u00f6n t\u00e4rin\u00e4tasojen ennustamisessa.<\/li>\n<\/ul>\n<h3>Ep\u00e4tasapainon jakauman arviointi<\/h3>\n<ul>\n<li>vaihe-suhteet kriittisill\u00e4 nopeuksilla paljastavat, kuinka <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/unbalance\/\">ep\u00e4tasapaino<\/a> on jakautunut roottorin pitkin;<\/li>\n<li>ne voivat erottaa staattisen <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/couple-unbalance\/\">parillinen ep\u00e4tasapaino<\/a>; ja<\/li>\n<li>ne auttavat suunnittelemaan tasapainottamisstrategian ennen kuin painoja lis\u00e4t\u00e4\u00e4n.<\/li>\n<\/ul>\n<h2>2. Vapaakierrostestin menettely<\/h2>\n<h3>Valmistelu<\/h3>\n<ol>\n<li><strong>Asenna anturit:<\/strong> place <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/accelerometer\/\">kiihtyvyysmittarit<\/a> tai <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/velocity-transducer\/\">nopeusanturit<\/a> laakerikohdissa sek\u00e4 vaaka- ett\u00e4 pystysuunnassa.<\/li>\n<li><strong>Asenna kierroslukumittari:<\/strong> optinen tai magneettinen <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/tachometer\/\">kierroslukumittari<\/a> kierrosnopeuden mittaamiseksi ja vaiheviitteen tuottamiseksi.<\/li>\n<li><strong>M\u00e4\u00e4rit\u00e4 tiedonkeruu:<\/strong> aseta jatkuva tallennus sopivalla n\u00e4ytetaajuudella.<\/li>\n<li><strong>M\u00e4\u00e4rit\u00e4 nopeusalue:<\/strong> yleens\u00e4 k\u00e4ytt\u00f6nopeudesta 10\u201320 prosenttiin siit\u00e4 tai kunnes kone pys\u00e4htyy.<\/li>\n<\/ol>\n<h3>Suoritus<\/h3>\n<ol>\n<li><strong>Vakauta k\u00e4yntinopeudelle:<\/strong> anna laitteen k\u00e4yd\u00e4 normaalilla nopeudella, kunnes l\u00e4mp\u00f6tila on tasaantunut ja t\u00e4rin\u00e4 on tasaantunut.<\/li>\n<li><strong>Aloita vapaak\u00e4ynti:<\/strong> katkaise k\u00e4ytt\u00f6voiman sy\u00f6tt\u00f6 \u2014 moottori, turbiini tai muu k\u00e4ytt\u00f6voimalaite \u2014 ja anna laitteen hidastua luonnollisesti.<\/li>\n<li><strong>Seuraa tilannetta jatkuvasti:<\/strong> tallenna t\u00e4rin\u00e4n amplitudi, vaihe ja nopeus koko hidastuksen ajan.<\/li>\n<li><strong>Huomioi turvallisuus:<\/strong> ole valppaana liiallisen t\u00e4rin\u00e4n varalta, joka voi olla merkki odottamattomasta resonanssista tai <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/rotor-instability\/\">ep\u00e4vakautta<\/a>.<\/li>\n<li><strong>Viimeistele hidastuminen:<\/strong> jatka mittausta, kunnes kone pys\u00e4htyy tai saavuttaa halutun alin nopeuden.<\/li>\n<\/ol>\n<h3>Tietojen ker\u00e4\u00e4misen parametrit<\/h3>\n<ul>\n<li><strong>N\u00e4ytteenottotaajuus:<\/strong> riitt\u00e4v\u00e4n korkea, jotta se pystyy havaitsemaan kaikki kiinnostavat taajuudet \u2014 tyypillisesti 10\u201320 kertaa suurin taajuus.<\/li>\n<li><strong>Kesto:<\/strong> m\u00e4\u00e4ritet\u00e4\u00e4n roottorin hitausmomentin perusteella, ja se voi vaihdella 30 sekunnista 10 minuuttiin.<\/li>\n<li><strong>Mittaukset:<\/strong> amplitudi, vaihe ja nopeus kaikilla anturipaikoilla.<\/li>\n<li><strong>Synkroninen n\u00e4ytteenotto:<\/strong> tiedot, jotka on ker\u00e4tty tasaisin kulmav\u00e4lein <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/order-analysis\/\">kertalukuanalyysi<\/a>.<\/li>\n<\/ul>\n<h2>3. Tietojen analysointi ja visualisointi<\/h2>\n<h3>Bode-diagrammi<\/h3>\n<p>Vapaakierrostietojen vakiotarkastelutapa on <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/bode-plot\/\">Bode-diagrammi<\/a>:<\/p>\n<ul>\n<li><strong>ylempi k\u00e4yr\u00e4:<\/strong> t\u00e4rin\u00e4n amplitudi suhteessa nopeuteen;<\/li>\n<li><strong>alempi k\u00e4yr\u00e4:<\/strong> vaihekulma suhteessa nopeuteen;<\/li>\n<li><strong>kriittisen nopeuden signatuuri:<\/strong> amplitudin huippuarvo ja siihen liittyv\u00e4 180 asteen vaihesiirto; ja<\/li>\n<li><strong>per mittauspaikka:<\/strong> erilliset kuvaajat jokaiselle mittauspisteelle ja suunnalle.<\/li>\n<\/ul>\n<h3>Vesiputouskaavio<\/h3>\n<p>A <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/waterfall-plot\/\">vesiputousdiagrammi<\/a> (kaskadikaavio) tarjoaa kolmiulotteisen n\u00e4kym\u00e4n:<\/p>\n<ul>\n<li>X-akseli: taajuus (Hz tai kertaluvut);<\/li>\n<li>Y-akseli: kierrosluku (rpm);<\/li>\n<li>Z-akseli (v\u00e4ri): v\u00e4r\u00e4htelyn amplitudi;<\/li>\n<li><strong>1\u00d7-komponentti<\/strong> n\u00e4kyy nopeutta kuvaavana vinona viivana;<\/li>\n<li><strong>ominaistaajuudet<\/strong> n\u00e4kyv\u00e4t vaakasuorina viivoina, joiden taajuus on vakio; ja<\/li>\n<li><strong>niiden leikkauspiste<\/strong> \u2014 kohta, jossa 1\u00d7-viiva leikkaa ominaistaajuusviivan \u2014 on kriittinen nopeus.<\/li>\n<\/ul>\n<h3>Napa-kaavio<\/h3>\n<ul>\n<li>t\u00e4rin\u00e4vektorit on piirretty useilla nopeuksilla;<\/li>\n<li>nopeuden laskiessa kunkin kriittisen nopeuden kohdalla muodostuu tyypillinen spiraali; ja<\/li>\n<li>vaiheenmuutos n\u00e4kyy selv\u00e4sti, kun vektori liikkuu ymp\u00e4ri.<\/li>\n<\/ul>\n<h2>4. Vapaakierrostesti vs. k\u00e4ynnistystesti<\/h2>\n<h3>Vapaak\u00e4ynnin edut<\/h3>\n<ul>\n<li><strong>Ulkoista k\u00e4ytt\u00f6voimaa ei tarvita:<\/strong> irrota vain vetolaite ja anna koneen rullata vapaalla.<\/li>\n<li><strong>Hitaampi hidastuvuus:<\/strong> Pidempi viipym\u00e4aika kullakin nopeudella parantaa taajuusresoluutiota.<\/li>\n<li><strong>Turvallisempi:<\/strong> j\u00e4rjestelm\u00e4 menett\u00e4\u00e4 energiaa sen sijaan, ett\u00e4 se saisi sit\u00e4.<\/li>\n<li><strong>Less stress:<\/strong> kriittiset nopeudet ylitet\u00e4\u00e4n energian laskiessa.<\/li>\n<\/ul>\n<h3>Kiihdytysajon edut<\/h3>\n<ul>\n<li><strong>Hallittu kiihdytys:<\/strong> kriittisten nopeuksien v\u00e4list\u00e4 nopeutta voidaan s\u00e4\u00e4t\u00e4\u00e4.<\/li>\n<li><strong>Osa normaalia k\u00e4ynnistyst\u00e4:<\/strong> a <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/run-up-analysis\/\">yl\u00f6sajoanalyysiin<\/a> voidaan ker\u00e4t\u00e4 tavanomaisen k\u00e4ynnistyksen aikana.<\/li>\n<li><strong>Aktiiviset olosuhteet:<\/strong> prosessikuormia on k\u00e4yt\u00f6ss\u00e4, joten tiedot kuvaavat paremmin todellista toimintaa.<\/li>\n<\/ul>\n<h3>Vertailun\u00e4k\u00f6kohdat<\/h3>\n<ul>\n<li><strong>L\u00e4mp\u00f6tila:<\/strong> K\u00e4ynnistystesti suoritetaan yleens\u00e4 kylm\u00e4ss\u00e4 tilassa; vapaakierrostesti alkaa kuumissa k\u00e4ytt\u00f6olosuhteissa.<\/li>\n<li><strong>Laakerin j\u00e4ykkyys:<\/strong> Voi vaihdella kuuman (rannikolla laskeutumisen) ja kylm\u00e4n (nousun) v\u00e4lill\u00e4<\/li>\n<li><strong>Kitka ja vaimennus:<\/strong> molemmat ovat l\u00e4mp\u00f6tilariippuvaisia ja siirt\u00e4v\u00e4t huippuamplitudien sijaintia.<\/li>\n<li><strong>Tietojen vertailu:<\/strong> nousu- ja laskuvaiheen k\u00e4yrien v\u00e4liset erot voivat jo sin\u00e4ns\u00e4 paljastaa l\u00e4mp\u00f6- tai kuormitusvaikutuksia.<\/li>\n<\/ul>\n<h2>5. Sovellukset ja k\u00e4ytt\u00f6tapaukset<\/h2>\n<h3>Uuden laitteiston k\u00e4ytt\u00f6\u00f6notto<\/h3>\n<ul>\n<li>varmistaa, ett\u00e4 kriittiset py\u00f6rimisnopeudet vastaavat suunnitteluennusteita;<\/li>\n<li>varmistaa, ett\u00e4 erotteluv\u00e4lit ovat riitt\u00e4v\u00e4t;<\/li>\n<li>vahvistaa roottoridynamiikkamallin; ja<\/li>\n<li>establish <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/baseline-data\/\">perustiedot<\/a> my\u00f6hemp\u00e4\u00e4 k\u00e4ytt\u00f6\u00e4 varten.<\/li>\n<\/ul>\n<h3>T\u00e4rin\u00e4ongelmien vianm\u00e4\u00e4ritys<\/h3>\n<ul>\n<li>selvitt\u00e4\u00e4, johtuuko voimakas t\u00e4rin\u00e4 nopeudesta (resonanssi);<\/li>\n<li>paljastaa aiemmin tuntemattomia kriittisi\u00e4 nopeuksia;<\/li>\n<li>arvioida muutoksen tai korjauksen vaikutusta; ja<\/li>\n<li>erottaa resonanssin muista v\u00e4r\u00e4htelyl\u00e4hteist\u00e4.<\/li>\n<\/ul>\n<h3>Tasapainotusmenettelyt<\/h3>\n<ul>\n<li>- <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/flexible-rotor\/\">joustavat roottorit<\/a>, vapaakierrostesti tunnistaa, mitk\u00e4 moodit vaativat tasapainottamista;<\/li>\n<li>se auttaa valitsemaan oikeat tasapainotusnopeudet; ja<\/li>\n<li>se varmistaa parannuksen j\u00e4lkeen <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/modal-balancing\/\">modaalinen tasapainotus<\/a>.<\/li>\n<\/ul>\n<h3>Muutosten todentaminen<\/h3>\n<ul>\n<li>kun laakerit on vaihdettu, tarkista, miten kriittinen py\u00f6rimisnopeus on muuttunut;<\/li>\n<li>kun massan tai j\u00e4ykkyyden arvot ovat muuttuneet, tarkista ennustettu ominaistaajuuden muutos; ja<\/li>\n<li>vertaa tilannetta ennen ja j\u00e4lkeen hidastumisen, jotta parannus voidaan mitata.<\/li>\n<\/ul>\n<h2>6. Hyvi\u00e4 k\u00e4yt\u00e4nt\u00f6j\u00e4 hidastustestaukseen<\/h2>\n<h3>Turvallisuusn\u00e4k\u00f6kohdat<\/h3>\n<ul>\n<li>varmista, ett\u00e4 kaikki l\u00e4hist\u00f6ll\u00e4 olevat tiet\u00e4v\u00e4t, ett\u00e4 testi on k\u00e4ynniss\u00e4;<\/li>\n<li>seuraa t\u00e4rin\u00e4\u00e4 tarkasti odottamattomien resonanssien varalta;<\/li>\n<li>pid\u00e4 h\u00e4t\u00e4pys\u00e4ytysmahdollisuus k\u00e4ytett\u00e4viss\u00e4;<\/li>\n<li>tyhjenn\u00e4 laitteen ymp\u00e4rist\u00f6; ja<\/li>\n<li>jos t\u00e4rin\u00e4\u00e4 alkaa esiinty\u00e4 liikaa, harkitse h\u00e4t\u00e4pys\u00e4ytyst\u00e4 sen sijaan, ett\u00e4 antaisit laitteen rullata pys\u00e4hdykseen.<\/li>\n<\/ul>\n<h3>Tiedon laatu<\/h3>\n<ul>\n<li><strong>Oikea hidastuvuus:<\/strong> ei niin nopeaa, ett\u00e4 nopeuskohtaisia mittauspisteit\u00e4 olisi liian v\u00e4h\u00e4n, eik\u00e4 niin hidasta, ett\u00e4 l\u00e4mp\u00f6tilaolosuhteet ehtisiv\u00e4t muuttua mittauksen aikana.<\/li>\n<li><strong>Vakaat olosuhteet:<\/strong> minimoidaan prosessimuuttujien vaihtelut testin aikana.<\/li>\n<li><strong>Multiple runs:<\/strong> suorita kaksi tai kolme hidastusta toistettavuuden varmistamiseksi.<\/li>\n<li><strong>Kaikki sijainnit kerralla:<\/strong> kirjaa kaikki laakeripisteet samanaikaisesti.<\/li>\n<\/ul>\n<h3>Dokumentaatio<\/h3>\n<ul>\n<li>kirjaa k\u00e4ytt\u00f6olosuhteet \u2013 l\u00e4mp\u00f6tila, kuormitus, kokoonpano;<\/li>\n<li>ker\u00e4\u00e4 kaikki t\u00e4rin\u00e4- ja nopeustiedot;<\/li>\n<li>Luo vakioanalyysikaavioita (Bode, vesiputous, polaarinen)<\/li>\n<li>tunnista ja merkitse kaikki havaitut kriittiset nopeudet; ja<\/li>\n<li>vertaa tuloksia suunnitteluennusteisiin tai aiempiin testituloksiin ja arkistoi ne sitten.<\/li>\n<\/ul>\n<h2>7. Tulosten tulkinta<\/h2>\n<h3>Kriittisten nopeuksien tunnistaminen<\/h3>\n<ul>\n<li>etsi amplitudin huippuarvoja Bode-kuviosta;<\/li>\n<li>vahvista kukin 180 asteen vaihesiirrolla;<\/li>\n<li>huomioi, mill\u00e4 nopeudella huippu saavutetaan; ja<\/li>\n<li>laske turvav\u00e4li k\u00e4ytt\u00f6nopeudesta.<\/li>\n<\/ul>\n<h3>Vakavuuden arviointi<\/h3>\n<ul>\n<li><strong>Huippuamplitudi:<\/strong> kuinka suureksi t\u00e4rin\u00e4 nousee kriittisell\u00e4 nopeudella?<\/li>\n<li><strong>Huippun ter\u00e4vyys:<\/strong> jyrkk\u00e4 piikki tarkoittaa heikkoa vaimennusta ja mahdollista ongelmaa.<\/li>\n<li><strong>K\u00e4ytt\u00f6et\u00e4isyys:<\/strong> Kuinka l\u00e4hell\u00e4 juoksunopeus on kriittist\u00e4 nopeutta?<\/li>\n<li><strong>Hyv\u00e4ksytt\u00e4vyys:<\/strong> tyypillisesti tarvitaan noin \u00b115\u201320 %:n erotteluvara.<\/li>\n<\/ul>\n<h3>Edistynyt analyysi<\/h3>\n<ul>\n<li>extract <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/mode-shape\/\">moodimuodot<\/a> monipistemittauksista;<\/li>\n<li>laske vaimennussuhteet huippuarvojen perusteella;<\/li>\n<li>erottaa eteenp\u00e4in ja taaksep\u00e4in suuntautuva py\u00f6riminen <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/whirl\/\">py\u00f6rimisliike<\/a> modes; and<\/li>\n<li>vertaa tuloksia <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/campbell-diagram\/\">Campbellin kaavio<\/a> predictions.<\/li>\n<\/ul>\n<h2>8. Hidastumistestaus kent\u00e4ll\u00e4<\/h2>\n<p>Paikan p\u00e4\u00e4ll\u00e4 hidastuvuusmittausta varten ei tarvita erillist\u00e4 testauspistett\u00e4 \u2013 se voidaan mitata kannettavalla laitteella heti, kun moottori sammutetaan. Kaksikanavainen analysaattori, kuten <a href=\"https:\/\/vibromera.eu\/fi\/tuote\/balanset-1\/\">Balanset-1A<\/a>, jonka laser-kierroslukumittari toimii vaiheviitteen\u00e4, tallentaa amplitudin, vaiheen ja nopeuden jatkuvasti roottorin hidastuessa, jolloin insin\u00f6\u00f6ri voi lukea kriittisen nopeuden huippuarvot suoraan tuloksena olevasta Bode-k\u00e4yr\u00e4st\u00e4. Sama tietojoukko, joka paikantaa resonanssin, vahvistaa my\u00f6s, vaikuttaako 1\u00d7-ep\u00e4tasapaino asiaan, mik\u00e4 helpottaa vianm\u00e4\u00e4rityst\u00e4 ja jatkotoimenpiteit\u00e4 <a href=\"https:\/\/vibromera.eu\/fi\/glossary\/kenttatasapaino\/\">kentt\u00e4tasapainotus<\/a> ty\u00f6nkulku yhdell\u00e4 ainoalla hidastumisella. Lyhyesti sanottuna hidastumistestaus tuottaa empiirist\u00e4 tietoa, joka t\u00e4ydent\u00e4\u00e4 analyyttisi\u00e4 ennusteita ja paljastaa py\u00f6rivien koneiden todellisen dynaamisen k\u00e4ytt\u00e4ytymisen todellisissa k\u00e4ytt\u00f6olosuhteissa.<\/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 rullausajosta eli py\u00f6rivien koneiden asteittaisesta hidastuvuudesta, jota k\u00e4ytet\u00e4\u00e4n kriittisten nopeuksien, ominaistaajuuksien ja roottorin dynaamisten ominaisuuksien tunnistamiseen v\u00e4r\u00e4htelyanalyysin avulla.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-79","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/glossary\/79","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\/79\/revisions"}],"predecessor-version":[{"id":101473,"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/glossary\/79\/revisions\/101473"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/media?parent=79"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/categories?post=79"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/fi\/wp-json\/wp\/v2\/tags?post=79"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}