{"id":158,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/low-pass-filter\/"},"modified":"2026-05-23T22:43:47","modified_gmt":"2026-05-23T22:43:47","slug":"low-pass-filter","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/sv\/glossary\/low-pass-filter\/","title":{"rendered":"Vad \u00e4r ett l\u00e5gpassfilter? Antialiasing och utj\u00e4mning"},"content":{"rendered":"<h1>F\u00f6rst\u00e5 l\u00e5gpassfilter<\/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\/sv\/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\/sv\/product\/balanset-1\/\" title=\"Portabel balanserare &amp; vibrationsanalysator 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 komplett kit med portabel balanserare och vibrationsanalysator\" 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\/sv\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/sv\/product\/balanset-1\/\" title=\"Portabel balanserare &amp; vibrationsanalysator Balanset-1A\">Portabel balanserare &amp; vibrationsanalysator 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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/wp-json\/wp\/v2\/glossary\/158?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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/wp-json\/wp\/v2\/glossary\/158?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=\"L\u00e4gg till i varukorgen: \u201dPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Portable balancer &amp; Vibration analyzer Balanset-1A&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/vibration-sensor\/\" title=\"Vibrationssensor\">\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 vibrationssensor - n\u00e4rbild\" 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\/sv\/product-category\/parts\/\" rel=\"tag\">Delar<\/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\/sv\/product\/vibration-sensor\/\" title=\"Vibrationssensor\">Vibrationssensor<\/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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/wp-json\/wp\/v2\/glossary\/158?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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/wp-json\/wp\/v2\/glossary\/158?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=\"L\u00e4gg till i varukorgen: \u201dVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Vibration sensor&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (lasertakometer)\">\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=\"Optisk sensor (lasertakometer)\" 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\/sv\/product-category\/parts\/\" rel=\"tag\">Delar<\/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\/sv\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (lasertakometer)\">Optisk sensor (lasertakometer)<\/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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/wp-json\/wp\/v2\/glossary\/158?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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/wp-json\/wp\/v2\/glossary\/158?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=\"L\u00e4gg till i varukorgen: \u201dOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Optical Sensor (Laser Tachometer)&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/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 rotorbalanseringssats: b\u00e4rv\u00e4ska, flerkanalig signalkonditionerare, handh\u00e5llen analysator, magnetisk bas, vibrationssensorer och spiralformade kablar.\" 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\/sv\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/sv\/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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/wp-json\/wp\/v2\/glossary\/158?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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/wp-json\/wp\/v2\/glossary\/158?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=\"L\u00e4gg till i varukorgen: \u201dBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Balanset-4&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/magnet-stand\/\" title=\"Magnetiskt stativ 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=\"Magnetf\u00e4ste.\" 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\/sv\/product-category\/parts\/\" rel=\"tag\">Delar<\/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\/sv\/product\/magnet-stand\/\" title=\"Magnetiskt stativ Insize-60-kgf\">Magnetiskt stativ 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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/wp-json\/wp\/v2\/glossary\/158?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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/wp-json\/wp\/v2\/glossary\/158?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=\"L\u00e4gg till i varukorgen: \u201dMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Magnetic Stand Insize-60-kgf&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/reflective-tape\/\" title=\"Reflekterande tejp\">\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=\"Reflekterande tejp\" 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\/sv\/product-category\/parts\/\" rel=\"tag\">Delar<\/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\/sv\/product\/reflective-tape\/\" title=\"Reflekterande tejp\">Reflekterande tejp<\/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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/wp-json\/wp\/v2\/glossary\/158?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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/wp-json\/wp\/v2\/glossary\/158?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=\"L\u00e4gg till i varukorgen: \u201dReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Reflective tape&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamisk balanserare &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-kit, inneh\u00e5ll med gr\u00e4nssnittsenhet, givare, varvr\u00e4knare och tillbeh\u00f6r\" 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\/sv\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/sv\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamisk balanserare &quot;Balanset-1A&quot; OEM\">Dynamisk balanserare \"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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/wp-json\/wp\/v2\/glossary\/158?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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/wp-json\/wp\/v2\/glossary\/158?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=\"L\u00e4gg till i varukorgen: \u201dDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Dynamic balancer \u201cBalanset-1A\u201d OEM&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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>A <strong>l\u00e5gpassfilter<\/strong> (LPF) \u00e4r ett frekvensselektivt signalbehandlingselement som l\u00e5ter <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/vibration\/\">vibrationer<\/a> komponenter under en vald gr\u00e4nsfrekvens sl\u00e4pps igenom medan komponenter \u00f6ver den d\u00e4mpas. I <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/vibration-analysis\/\">vibrationsanalys<\/a> den utf\u00f6r tre uppgifter som en analysator inte kan klara sig utan: antialiasing (f\u00f6rhindrar att falska frekvenser visas i digitala data), brusreducering och isolering av l\u00e5gfrekvensomr\u00e5det f\u00f6r fokuserad studie. Den \u00e4r en spegelbild av <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/high-pass-filter\/\">h\u00f6gpassfilter<\/a>, och de tv\u00e5 \u00e4r byggstenarna i alla andra <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/signal-filtering\/\">filtrering av signaler<\/a> schema.<\/p>\n<p>L\u00e5gpassfilter \u00e4r utan tvekan de mest anv\u00e4nda filtren inom vibrationsinstrumentering. Det sitter framf\u00f6r omvandlaren i varje digitaliseringssystem som ett obligatoriskt antialiasingfilter, och samma funktion erbjuds som ett analysverktyg f\u00f6r att j\u00e4mna ut data, ta bort h\u00f6gfrekvent brus och koncentrera sig p\u00e5 l\u00e5gfrekventa fenomen. Att f\u00f6rst\u00e5 hur de formar en signal \u00e4r d\u00e4rf\u00f6r viktigt f\u00f6r att kunna lita p\u00e5 alla <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/spectrum\/\">spektrum<\/a> du l\u00e4ser.<\/p>\n<h2>1. Filterkarakteristik<\/h2>\n<h3>Avsk\u00e4rningsfrekvens (f<sub>c<\/sub>)<\/h3>\n<ul>\n<li><strong>Definition:<\/strong> den frekvens vid vilken filterresponsen har sjunkit till -3 dB, dvs. 70,7% av passbandets amplitud.<\/li>\n<li><strong>Nedan f<sub>c<\/sub> (passband):<\/strong> frekvenser passerar med minimal d\u00e4mpning.<\/li>\n<li><strong>Ovan f<sub>c<\/sub> (stoppband):<\/strong> frekvenserna gradvis d\u00e4mpas.<\/li>\n<li><strong>\u00d6verg\u00e5ngsband:<\/strong> omr\u00e5det runt f<sub>c<\/sub> d\u00e4r d\u00e4mpningen \u00f6kar stadigt.<\/li>\n<\/ul>\n<h3>Filterordning och avrullning<\/h3>\n<p>Ordningen p\u00e5 ett filter avg\u00f6r hur skarpt det \u00f6verg\u00e5r fr\u00e5n passband till stoppband:<\/p>\n<ul>\n<li><strong>1:a ordern:<\/strong> 6 dB\/oktav (20 dB\/dekad) - gradvis avklingning.<\/li>\n<li><strong>2:a ordern:<\/strong> 12 dB\/oktav (40 dB\/dekad) - m\u00e5ttlig.<\/li>\n<li><strong>4:e ordern:<\/strong> 24 dB\/oktav (80 dB\/dekad) - brant.<\/li>\n<li><strong>8:e ordningen:<\/strong> 48 dB\/oktav (160 dB\/dekad) - mycket brant.<\/li>\n<li><strong>H\u00f6gre order:<\/strong> en skarpare \u00f6verg\u00e5ng och b\u00e4ttre stoppbandsavvisning, till priset av mer fasf\u00f6rskjutning och l\u00e4ngre transientrespons.<\/li>\n<\/ul>\n<h3>Filtersvarstyper<\/h3>\n<p>Samma avsk\u00e4rningsfrekvens och ordning kan uppn\u00e5s med olika matematiska former, som var och en inneb\u00e4r en avv\u00e4gning mellan planhet, sk\u00e4rpa och fasbeteende:<\/p>\n<ul>\n<li><strong>Butterworth:<\/strong> maximalt platt passband utan rippel.<\/li>\n<li><strong>Tjebysjov:<\/strong> en skarpare avsk\u00e4rning, med rippel i passbandet.<\/li>\n<li><strong>Bessel:<\/strong> linj\u00e4r fas, vilket inneb\u00e4r minimal v\u00e5gformsdistorsion - det r\u00e4tta valet n\u00e4r formen p\u00e5 <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/time-waveform\/\">tidsv\u00e5gform<\/a> fr\u00e5gor.<\/li>\n<li><strong>Elliptisk:<\/strong> den skarpaste m\u00f6jliga \u00f6verg\u00e5ngen, med rippel i b\u00e5de passband och stoppband.<\/li>\n<\/ul>\n<h2>2. Huvudsakliga till\u00e4mpningar<\/h2>\n<h3>Anti-aliasing (viktigast)<\/h3>\n<p>Det h\u00e4r \u00e4r en funktion som ingen digitaliserare kan utel\u00e4mna. Utan den viker frekvenser \u00f6ver Nyquist-gr\u00e4nsen tillbaka och framtr\u00e4der som falska toppar - fenomenet <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/aliasing\/\">aliasering<\/a>.<\/p>\n<ul>\n<li><strong>\u00c4ndam\u00e5l:<\/strong> blockerar frekvenser \u00f6ver Nyquist-frekvensen (halva samplingsfrekvensen).<\/li>\n<li><strong>Krav:<\/strong> den m\u00e5ste agera <em>f\u00f6re<\/em> analog-till-digital-konvertering - programvara kan inte ta bort ett alias i efterhand.<\/li>\n<li><strong>Typisk avsk\u00e4rningsfrekvens:<\/strong> 0,4-0,8 \u00d7 (samplingsfrekvens \/ 2).<\/li>\n<li><strong>Branthet:<\/strong> Vanligtvis \u00e5ttonde ordningen eller h\u00f6gre f\u00f6r bra aliasing-avvisning<\/li>\n<li><strong>Konsekvens av f\u00f6rsummelse:<\/strong> otillr\u00e4cklig antialiasing skapar falska spektrala toppar som efterliknar verkliga fel.<\/li>\n<\/ul>\n<h3>Brusreducering<\/h3>\n<ul>\n<li>Avl\u00e4gsnar h\u00f6gfrekvent elektriskt brus.<\/li>\n<li>Filtrerar bort brus fr\u00e5n sensorer och kablar.<\/li>\n<li>Utj\u00e4mnar data f\u00f6r <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/trending\/\">trendning<\/a>.<\/li>\n<li>F\u00f6rb\u00e4ttrar signal-brusf\u00f6rh\u00e5llandet f\u00f6r de l\u00e5gfrekventa komponenter som \u00e4r av intresse.<\/li>\n<\/ul>\n<h3>Begr\u00e4nsning av frekvensomr\u00e5de<\/h3>\n<ul>\n<li>Fokuserar analysen p\u00e5 det frekvensomr\u00e5de som \u00e4r av intresse.<\/li>\n<li>Exempel: en 0-100 Hz-analys f\u00f6r maskiner med l\u00e5g hastighet.<\/li>\n<li>Tar bort irrelevant h\u00f6gfrekvent inneh\u00e5ll.<\/li>\n<li>Minskar kraven p\u00e5 databehandling och lagring.<\/li>\n<\/ul>\n<h3>F\u00f6rberedelse f\u00f6r integration<\/h3>\n<ul>\n<li>Anv\u00e4nds tidigare <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/integration\/\">integrering<\/a> <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/acceleration\/\">acceleration<\/a> till <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/velocity\/\">hastighet<\/a>.<\/li>\n<li>Tar bort mycket h\u00f6ga frekvenser - brus som integrationen annars skulle f\u00f6rst\u00e4rka.<\/li>\n<li>Typisk avsk\u00e4rningsfrekvens: 1000-5000 Hz beroende p\u00e5 applikation.<\/li>\n<li>F\u00f6rhindrar den brusf\u00f6rst\u00e4rkning som annars uppst\u00e5r vid okontrollerad integration.<\/li>\n<\/ul>\n<h2>3. Val av avsk\u00e4rningsfrekvens<\/h2>\n<h3>Antialiasing-applikationer<\/h3>\n<ul>\n<li><strong>Regel:<\/strong> f<sub>c<\/sub> = 0,4 \u00d7 samplingsfrekvensen (konservativ) till 0,8 \u00d7 samplingsfrekvensen (aggressiv).<\/li>\n<li><strong>Exempel:<\/strong> en samplingsfrekvens p\u00e5 10 kHz ger f<sub>c<\/sub> = 4000 Hz.<\/li>\n<li><strong>Kriterium:<\/strong> stoppbandsd\u00e4mpning st\u00f6rre \u00e4n 60 dB vid Nyquist-frekvensen.<\/li>\n<\/ul>\n<h3>Analytiska till\u00e4mpningar<\/h3>\n<ul>\n<li>St\u00e4ll in f<sub>c<\/sub> strax \u00f6ver den h\u00f6gsta frekvensen av intresse.<\/li>\n<li>F\u00f6r analys av l\u00e5ga frekvenser (0-200 Hz): f<sub>c<\/sub> = 200-300 Hz.<\/li>\n<li>F\u00f6r <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/unbalance\/\">obalans<\/a> endast (1\u00d7-komponenten): f<sub>c<\/sub> = 5-10\u00d7 <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/running-speed\/\">driftshastighet<\/a>.<\/li>\n<li>L\u00e4mna alltid marginal f\u00f6r filter\u00f6verg\u00e5ngsbandet.<\/li>\n<\/ul>\n<h3>Brusreducering<\/h3>\n<ul>\n<li>Identifiera brusets frekvensomr\u00e5de fr\u00e5n spektrumet.<\/li>\n<li>St\u00e4ll in f<sub>c<\/sub> f\u00f6r att sl\u00e4ppa igenom signalfrekvenserna och samtidigt avvisa brusfrekvenserna.<\/li>\n<li>Balansera borttagning av brus mot bevarande av signaler.<\/li>\n<\/ul>\n<h2>4. Effekter p\u00e5 m\u00e4tningar<\/h2>\n<h3>Amplituddom\u00e4n<\/h3>\n<ul>\n<li><strong>Passband:<\/strong> minimal amplitudf\u00f6r\u00e4ndring, typiskt mindre \u00e4n 0,5 dB.<\/li>\n<li><strong>Stoppband:<\/strong> kraftig d\u00e4mpning, 40-80 dB eller mer.<\/li>\n<li><strong>\u00d6vergripande niv\u00e5:<\/strong> filtret minskar den totala vibrationsavl\u00e4sningen om betydande h\u00f6gfrekvent inneh\u00e5ll fanns n\u00e4rvarande.<\/li>\n<\/ul>\n<h3>Tidsdom\u00e4n<\/h3>\n<ul>\n<li>V\u00e5gformen blir j\u00e4mnare n\u00e4r h\u00f6gfrekventa variationer tas bort.<\/li>\n<li>Vassa kanter och spikar \u00e4r avrundade.<\/li>\n<li>Transient respons (filterringning) kan p\u00e5verka v\u00e5gformens form<\/li>\n<li>Fasf\u00f6rvr\u00e4ngning kan \u00e4ndra hur v\u00e5gformen tolkas.<\/li>\n<\/ul>\n<h3>Frekvensdom\u00e4n<\/h3>\n<ul>\n<li>Spektrumet visar reducerade amplituder \u00f6ver avsk\u00e4rningsfrekvensen.<\/li>\n<li>H\u00f6gfrekventa toppar minskas eller elimineras.<\/li>\n<li>Brusgolvet s\u00e4nks om bruset var h\u00f6gfrekvent.<\/li>\n<\/ul>\n<h2>5. Vanliga problem och l\u00f6sningar<\/h2>\n<h3>Otillr\u00e4cklig antialiasing<\/h3>\n<ul>\n<li><strong>Symptom:<\/strong> falska l\u00e5gfrekventa toppar i spektrumet.<\/li>\n<li><strong>Orsak:<\/strong> h\u00f6ga frekvenser viker tillbaka under Nyquist.<\/li>\n<li><strong>L\u00f6sning:<\/strong> anv\u00e4nd ett brantare filter, \u00f6ka samplingsfrekvensen och kontrollera att filtret faktiskt fungerar.<\/li>\n<\/ul>\n<h3>Gr\u00e4nssnittet \u00e4r f\u00f6r l\u00e5gt<\/h3>\n<ul>\n<li><strong>Symptom:<\/strong> giltiga h\u00f6gfrekventa signaler d\u00e4mpas.<\/li>\n<li><strong>Exempel:<\/strong> <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/bearing-fault-frequencies\/\">lagerfelfrekvenser<\/a> minskas av en alltf\u00f6r aggressiv LPF.<\/li>\n<li><strong>L\u00f6sning:<\/strong> \u00f6ka avsk\u00e4rningsfrekvensen eller anv\u00e4nd en flackare filterlutning.<\/li>\n<\/ul>\n<h3>Filterartefakter<\/h3>\n<ul>\n<li><strong>Ringande:<\/strong> sv\u00e4ngningar i tidsdom\u00e4nen som orsakas av en skarp filteravsk\u00e4rning.<\/li>\n<li><strong>Fasf\u00f6rskjutning:<\/strong> f\u00f6r\u00e4ndringar i v\u00e5gformens form till f\u00f6ljd av fasf\u00f6rskjutningar.<\/li>\n<li><strong>L\u00f6sning:<\/strong> Anv\u00e4nd ett Bessel-filter f\u00f6r kritiska v\u00e5gformstill\u00e4mpningar d\u00e4r faslinj\u00e4riteten \u00e4r viktig.<\/li>\n<\/ul>\n<h2>6. Komplement\u00e4ra filter<\/h2>\n<h3>L\u00e5gpass kontra h\u00f6gpass<\/h3>\n<ul>\n<li><strong>L\u00e5gpass:<\/strong> sl\u00e4pper igenom l\u00e5ga frekvenser, blockerar h\u00f6ga.<\/li>\n<li><strong>H\u00f6gpass:<\/strong> sl\u00e4pper igenom h\u00f6ga frekvenser, blockerar l\u00e5ga.<\/li>\n<li><strong>Komplement\u00e4r:<\/strong> anv\u00e4nds tillsammans f\u00f6r att bilda ett bandpassfilter.<\/li>\n<\/ul>\n<h3>Bandpassfilter<\/h3>\n<ul>\n<li>En kombination av h\u00f6gpass- och l\u00e5gpasssteg.<\/li>\n<li>Det resulterande <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/band-pass-filter\/\">bandpassfilter<\/a> sl\u00e4pper endast igenom frekvenser inom ett specificerat band.<\/li>\n<li>Den avvisar inneh\u00e5ll b\u00e5de under och \u00f6ver detta band.<\/li>\n<li>Detta \u00e4r ing\u00e5ngssteget i <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/envelope-analysis\/\">enveloppanalys<\/a>, d\u00e4r ett band runt ett lagers strukturresonans isoleras f\u00f6re demodulering.<\/li>\n<\/ul>\n<h2>7. L\u00e5gpassfiltret i f\u00e4ltinstrument<\/h2>\n<p>P\u00e5 ett digitalt f\u00e4ltinstrument \u00e4r l\u00e5gpassfiltret f\u00f6r det mesta osynligt - det utf\u00f6r sitt antialiasingarbete i det tysta i m\u00e4tkedjan - men det ligger till grund f\u00f6r tillf\u00f6rlitligheten i varje avl\u00e4sning. En b\u00e4rbar tv\u00e5kanalsanalysator som t.ex. <a href=\"https:\/\/vibromera.eu\/sv\/produkt\/balanset-1\/\">Balanset-1A<\/a> bandbegr\u00e4nsar varje <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/accelerometer\/\">accelerometer<\/a> kanal f\u00f6re provtagning, s\u00e5 att <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/fft\/\">FFT<\/a> som den ber\u00e4knar f\u00f6r balansering och diagnostik \u00e4r fritt fr\u00e5n aliaserade toppar i hela arbetsomr\u00e5det. N\u00e4r spektrumet \u00e4r rent kan analysatorn urskilja 1\u00d7 <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/phase\/\">amplitud och fas<\/a> som beh\u00f6vs f\u00f6r att balansera en rotor och rapportera en sann <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/residual-unbalance\/\">kvarvarande obalans<\/a>, i st\u00e4llet f\u00f6r att jaga en sp\u00f6kfrekvens som skapats av d\u00e5lig filtrering.<\/p>\n<p>L\u00e5gpassfilter \u00e4r grundl\u00e4ggande komponenter i vibrationsm\u00e4tningssystem och fyller viktiga funktioner, fr\u00e5n antialiasingskydd till brusreducering och val av frekvensomr\u00e5de. Att f\u00f6rst\u00e5 hur de fungerar, v\u00e4lja r\u00e4tt gr\u00e4nsfrekvens och uppskatta deras effekt p\u00e5 den uppm\u00e4tta signalen \u00e4r avg\u00f6rande f\u00f6r en korrekt analys och f\u00f6r att undvika m\u00e4tartefakter vid digital datainsamling.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/sv\/glossary\/\">\u2190 Tillbaka till huvudregistret<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>L\u00e4r dig om l\u00e5gpassfilter inom vibrationsanalys, signalbehandlingsverktyg som sl\u00e4pper igenom l\u00e5ga frekvenser samtidigt som de blockerar h\u00f6ga frekvenser, vilket \u00e4r viktigt f\u00f6r antialiasing och brusreducering.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-158","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/glossary\/158","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/glossary\/158\/revisions"}],"predecessor-version":[{"id":101341,"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/glossary\/158\/revisions\/101341"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/media?parent=158"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/categories?post=158"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/tags?post=158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}