{"id":20621,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/aliasing\/"},"modified":"2026-05-23T22:13:48","modified_gmt":"2026-05-23T22:13:48","slug":"aliasing","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/hu\/glossary\/aliasing\/","title":{"rendered":"Mi az aliasing a rezg\u00e9sanal\u00edzisben?"},"content":{"rendered":"<h1>Az \u00e1tlapol\u00f3d\u00e1s (aliasing) meg\u00e9rt\u00e9se a rezg\u00e9sanal\u00edzisben<\/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\/hu\/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\/hu\/product\/balanset-1\/\" title=\"Hordozhat\u00f3 kiegyens\u00falyoz\u00f3 \u00e9s rezg\u00e9selemz\u0151 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 teljes k\u00e9szlet\u0171 hordozhat\u00f3 kiegyens\u00falyoz\u00f3 \u00e9s rezg\u00e9selemz\u0151 k\u00e9sz\u00fcl\u00e9k\" 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\/hu\/product-category\/devices\/\" rel=\"tag\">Eszk\u00f6z\u00f6k<\/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\/hu\/product\/balanset-1\/\" title=\"Hordozhat\u00f3 kiegyens\u00falyoz\u00f3 \u00e9s rezg\u00e9selemz\u0151 Balanset-1A\">Hordozhat\u00f3 kiegyens\u00falyoz\u00f3 \u00e9s rezg\u00e9selemz\u0151 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> + \u00c1FA (ha alkalmazand\u00f3)<\/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=\"\/hu\/wp-json\/wp\/v2\/glossary\/20621?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=\"Kos\u00e1rba teszem\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Kos\u00e1rba teszem\" 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=\"\/hu\/wp-json\/wp\/v2\/glossary\/20621?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=\"Kos\u00e1rba: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Kos\u00e1rba teszem<\/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\/hu\/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\/hu\/product\/vibration-sensor\/\" title=\"Rezg\u00e9s\u00e9rz\u00e9kel\u0151\">\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 rezg\u00e9s\u00e9rz\u00e9kel\u0151 k\u00f6zelr\u0151l\" 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\/hu\/product-category\/parts\/\" rel=\"tag\">Alkatr\u00e9szek<\/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\/hu\/product\/vibration-sensor\/\" title=\"Rezg\u00e9s\u00e9rz\u00e9kel\u0151\">Rezg\u00e9s\u00e9rz\u00e9kel\u0151<\/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> + \u00c1FA (ha alkalmazand\u00f3)<\/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=\"\/hu\/wp-json\/wp\/v2\/glossary\/20621?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=\"Kos\u00e1rba teszem\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Kos\u00e1rba teszem\" 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=\"\/hu\/wp-json\/wp\/v2\/glossary\/20621?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=\"Kos\u00e1rba: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Kos\u00e1rba teszem<\/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\/hu\/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\/hu\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optikai \u00e9rz\u00e9kel\u0151 (l\u00e9zeres fordulatsz\u00e1mm\u00e9r\u0151)\">\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=\"Optikai \u00e9rz\u00e9kel\u0151 (l\u00e9zeres fordulatsz\u00e1mm\u00e9r\u0151)\" 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\/hu\/product-category\/parts\/\" rel=\"tag\">Alkatr\u00e9szek<\/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\/hu\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optikai \u00e9rz\u00e9kel\u0151 (l\u00e9zeres fordulatsz\u00e1mm\u00e9r\u0151)\">Optikai \u00e9rz\u00e9kel\u0151 (l\u00e9zeres fordulatsz\u00e1mm\u00e9r\u0151)<\/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> + \u00c1FA (ha alkalmazand\u00f3)<\/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=\"\/hu\/wp-json\/wp\/v2\/glossary\/20621?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=\"Kos\u00e1rba teszem\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Kos\u00e1rba teszem\" 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=\"\/hu\/wp-json\/wp\/v2\/glossary\/20621?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=\"Kos\u00e1rba: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Kos\u00e1rba teszem<\/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\/hu\/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\/hu\/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 rotor kiegyens\u00falyoz\u00f3 k\u00e9szlet: hordt\u00e1ska, t\u00f6bbcsatorn\u00e1s jel\u00e1talak\u00edt\u00f3, k\u00e9zi analiz\u00e1tor, m\u00e1gneses talp, rezg\u00e9s\u00e9rz\u00e9kel\u0151k \u00e9s tekercselt k\u00e1belek.\" 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\/hu\/product-category\/devices\/\" rel=\"tag\">Eszk\u00f6z\u00f6k<\/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\/hu\/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> + \u00c1FA (ha alkalmazand\u00f3)<\/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=\"\/hu\/wp-json\/wp\/v2\/glossary\/20621?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=\"Kos\u00e1rba teszem\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Kos\u00e1rba teszem\" 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=\"\/hu\/wp-json\/wp\/v2\/glossary\/20621?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=\"Kos\u00e1rba: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Kos\u00e1rba teszem<\/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\/hu\/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\/hu\/product\/magnet-stand\/\" title=\"M\u00e1gneses \u00e1llv\u00e1ny 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=\"M\u00e1gneses alap.\" 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\/hu\/product-category\/parts\/\" rel=\"tag\">Alkatr\u00e9szek<\/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\/hu\/product\/magnet-stand\/\" title=\"M\u00e1gneses \u00e1llv\u00e1ny Insize-60-kgf\">M\u00e1gneses \u00e1llv\u00e1ny 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> + \u00c1FA (ha alkalmazand\u00f3)<\/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=\"\/hu\/wp-json\/wp\/v2\/glossary\/20621?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=\"Kos\u00e1rba teszem\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Kos\u00e1rba teszem\" 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=\"\/hu\/wp-json\/wp\/v2\/glossary\/20621?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=\"Kos\u00e1rba: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Kos\u00e1rba teszem<\/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\/hu\/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\/hu\/product\/reflective-tape\/\" title=\"F\u00e9nyvisszaver\u0151 szalag\">\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=\"F\u00e9nyvisszaver\u0151 szalag\" 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\/hu\/product-category\/parts\/\" rel=\"tag\">Alkatr\u00e9szek<\/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\/hu\/product\/reflective-tape\/\" title=\"F\u00e9nyvisszaver\u0151 szalag\">F\u00e9nyvisszaver\u0151 szalag<\/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> + \u00c1FA (ha alkalmazand\u00f3)<\/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=\"\/hu\/wp-json\/wp\/v2\/glossary\/20621?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=\"Kos\u00e1rba teszem\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Kos\u00e1rba teszem\" 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=\"\/hu\/wp-json\/wp\/v2\/glossary\/20621?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=\"Kos\u00e1rba: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Kos\u00e1rba teszem<\/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\/hu\/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\/hu\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dinamikus kiegyens\u00falyoz\u00f3 &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 k\u00e9szlet tartalma interf\u00e9sz egys\u00e9ggel, \u00e9rz\u00e9kel\u0151kkel, tachom\u00e9terrel \u00e9s tartoz\u00e9kokkal\" 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\/hu\/product-category\/devices\/\" rel=\"tag\">Eszk\u00f6z\u00f6k<\/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\/hu\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dinamikus kiegyens\u00falyoz\u00f3 &quot;Balanset-1A&quot; OEM\">Dinamikus kiegyens\u00falyoz\u00f3 \"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> + \u00c1FA (ha alkalmazand\u00f3)<\/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=\"\/hu\/wp-json\/wp\/v2\/glossary\/20621?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=\"Kos\u00e1rba teszem\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Kos\u00e1rba teszem\" 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=\"\/hu\/wp-json\/wp\/v2\/glossary\/20621?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=\"Kos\u00e1rba: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Kos\u00e1rba teszem<\/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>Aliasing<\/strong> olyan jelfeldolgoz\u00e1si hiba, amely megrong\u00e1lhatja a rezg\u00e9si adatok digit\u00e1lis elemz\u00e9s\u00e9t. Ez akkor fordul el\u0151, ha egy jelet t\u00fal alacsony mintav\u00e9teli sebess\u00e9ggel mintav\u00e9teleznek ahhoz, hogy annak legmagasabb frekvenci\u00e1j\u00fa \u00f6sszetev\u0151it r\u00f6gz\u00edteni tudja, \u00edgy ezek a magas frekvenci\u00e1k \u201elehajlanak\u201d, \u00e9s alacsonyabb frekvenci\u00e1knak adj\u00e1k ki magukat az \u00edgy kapott <a href=\"https:\/\/vibromera.eu\/hu\/glossary\/fft\/\">FFT<\/a> spektrum. Az eredm\u00e9ny hamis cs\u00facs\u00e9rt\u00e9kek, amelyek a val\u00f3di g\u00e9pben soha nem l\u00e9teztek - cs\u00facs\u00e9rt\u00e9kek, amelyek s\u00falyos t\u00e9ves diagn\u00f3zishoz vezethetnek. Az aliasing \u00e9s az azt megakad\u00e1lyoz\u00f3 v\u00e9dint\u00e9zked\u00e9sek meg\u00e9rt\u00e9se alapvet\u0151 fontoss\u00e1g\u00fa b\u00e1rmely digit\u00e1lis m\u00e9r\u0151eszk\u00f6z megb\u00edzhat\u00f3 haszn\u00e1lat\u00e1hoz. <a href=\"https:\/\/vibromera.eu\/hu\/glossary\/spectrum\/\">rezg\u00e9si spektrum<\/a>.<\/p>\n<h2>1. Meghat\u00e1roz\u00e1s: Mi az Aliasing?<\/h2>\n<p>Amikor egy analiz\u00e1tor digitaliz\u00e1l egy rezg\u00e9sjelet, nem egy folyamatos g\u00f6rb\u00e9t r\u00f6gz\u00edt; diszkr\u00e9t mint\u00e1k sorozat\u00e1t r\u00f6gz\u00edti - r\u00f6gz\u00edtett id\u0151k\u00f6z\u00f6nk\u00e9nt k\u00e9sz\u00edtett pillanatfelv\u00e9teleket. Ha ezek a pillanatk\u00e9pek t\u00fal nagy t\u00e1vols\u00e1gra vannak egym\u00e1st\u00f3l a jel v\u00e1ltoz\u00e1s\u00e1nak sebess\u00e9g\u00e9hez k\u00e9pest, az analiz\u00e1tor sz\u00f3 szerint nem tudja megk\u00fcl\u00f6nb\u00f6ztetni a gyors \u00e9s a lass\u00fa hull\u00e1mot. Az a n\u00e9h\u00e1ny pont, amelyet egy nagyfrekvenci\u00e1s komponensb\u0151l r\u00f6gz\u00edt, egy t\u00f6k\u00e9letesen hihet\u0151, alacsony frekvenci\u00e1j\u00fa szinuszhull\u00e1mm\u00e1 egyes\u00edthet\u0151. Ez a fantom alacsony frekvencia a <em>alias<\/em>, \u00e9s amint megjelenik a <a href=\"https:\/\/vibromera.eu\/hu\/glossary\/spectral-analysis\/\">spektrum<\/a> megk\u00fcl\u00f6nb\u00f6ztethetetlen egy val\u00f3di rezg\u00e9st\u0151l ezen a frekvenci\u00e1n.<\/p>\n<h2>2. A Nyquist-t\u00e9tel \u00e9s a mintav\u00e9teli sebess\u00e9g<\/h2>\n<p>Az aliasing meg\u00e9rt\u00e9s\u00e9hez el\u0151sz\u00f6r meg kell \u00e9rtened a <strong>Nyquist-t\u00e9tel<\/strong> (Nyquist-Shannon mintav\u00e9teli t\u00e9tel). A digit\u00e1lis jelfeldolgoz\u00e1s ezen alapelve kimondja:<\/p>\n<blockquote><p>\n    <em>Egy anal\u00f3g jel digit\u00e1lis form\u00e1ban t\u00f6rt\u00e9n\u0151 pontos \u00e1br\u00e1zol\u00e1s\u00e1hoz a mintav\u00e9teli frekvencia (F<sub>s<\/sub>) legal\u00e1bb k\u00e9tszerese kell, hogy legyen a legmagasabb frekvenci\u00e1j\u00fa komponensnek (F<sub>max<\/sub>) a jelben.<\/em>\n<\/p><\/blockquote>\n<p>Ez a minim\u00e1lis mintav\u00e9teli sebess\u00e9g (2 \u00d7 F<sub>max<\/sub>) az \u00fagynevezett <strong>Nyquist-r\u00e1ta<\/strong>. Megford\u00edtva, a legmagasabb frekvencia, amit egy adott mintav\u00e9teli frekvencia h\u0171en m\u00e9rni tud, a fele: F<sub>max<\/sub> = F<sub>s<\/sub> \/ 2. Ez a fels\u0151 hat\u00e1r a <strong>Nyquist-frekvencia<\/strong>. A Nyquist-frekvencia feletti val\u00f3s frekvenci\u00e1t nem lehet \u0151szint\u00e9n \u00e1br\u00e1zolni, \u00e9s ehelyett a Nyquist-frekvencia alatt visszaver\u0151dik. A gyakorlatban a v\u00e1lasztott F<sub>max<\/sub> az anal\u00edzis felbont\u00e1s\u00e1t is be\u00e1ll\u00edtja az FFT sorok sz\u00e1m\u00e1val egy\u00fctt \u2014 ezt a kapcsolatot egy <a href=\"https:\/\/vibromera.eu\/hu\/calculators\/fft-resolution-calculator\/\">FFT felbont\u00e1s kalkul\u00e1tor<\/a> a m\u00e9r\u00e9s megtervez\u00e9sekor.<\/p>\n<h2>3. Hogyan keletkezik az aliasing?<\/h2>\n<p>K\u00e9pzelje el, hogy egy nagyfrekvenci\u00e1s rezg\u00e9st egy digit\u00e1lis analiz\u00e1tor m\u00e9r, amely diszkr\u00e9t mint\u00e1kat vesz r\u00f6gz\u00edtett sebess\u00e9ggel:<\/p>\n<ul>\n<li>Ha a mintav\u00e9teli sebess\u00e9g el\u00e9g magas - j\u00f3val a Nyquist-r\u00e1ta felett -, az analiz\u00e1tor ciklusonk\u00e9nt elegend\u0151 pontot r\u00f6gz\u00edt a hull\u00e1mforma pontos rekonstru\u00e1l\u00e1s\u00e1hoz.<\/li>\n<li>Ha a mintav\u00e9teli sebess\u00e9g t\u00fal alacsony, az analiz\u00e1tor nem veszi \u00e9szre, mi t\u00f6rt\u00e9nik a mint\u00e1k k\u00f6z\u00f6tt. Az a maroknyi pont, amelyet r\u00f6gz\u00edt, egy teljesen m\u00e1s, alacsonyabb frekvenci\u00e1j\u00fa szinuszhull\u00e1mba kapcsol\u00f3dik. Ez a hamis alacsony frekvencia az alias.<\/li>\n<\/ul>\n<p>Egy konkr\u00e9t p\u00e9lda: tegy\u00fck fel, hogy egy jel tartalmaz egy 900 Hz-es val\u00f3s komponenst, de az analiz\u00e1tor F<sub>max<\/sub> 500 Hz-re van be\u00e1ll\u00edtva, ami 1000 Hz-es mintav\u00e9teli frekvenci\u00e1nak felel meg. A 900 Hz-es tartalom az 500 Hz-es Nyquist-frekvencia felett van, \u00e9s nem m\u00e9rhet\u0151 helyesen. Aliasingot szenved, \u00e9s \u00fajra megjelenik az F<sub>s<\/sub> - 900 = 1000 - 900 = 100 Hz. A spektrumot p\u00e1szt\u00e1z\u00f3 elemz\u0151 k\u00f6nnyen \u00f6sszet\u00e9vesztheti ezt a 100 Hz-es cs\u00facsot egy <a href=\"https:\/\/vibromera.eu\/hu\/glossary\/running-speed\/\">1\u00d7 fut\u00e1si sebess\u00e9g<\/a> rezg\u00e9ssel, vagy egy val\u00f3di hib\u00e1val, \u00e9s olyan hib\u00e1t \u00fcld\u00f6z, amely nem l\u00e9tezik. Ami m\u00e9g rosszabb, hogy a nagyfrekvenci\u00e1s b\u0171n\u00f6s\u00f6k \u2014 csap\u00e1gycsap\u00e1sok, fogasker\u00e9k-kapcsol\u00f3d\u00e1si energia, elektromos zaj \u2014 gyakran \u00e9ppen azok a jelek, amelyekben az elemz\u0151 a legink\u00e1bb megb\u00edzik.<\/p>\n<h2>4. Aliasing megakad\u00e1lyoz\u00e1sa: Anti-Aliasing sz\u0171r\u0151<\/h2>\n<p>Lehetetlen el\u0151re tudni, hogy egy jel milyen nagyfrekvenci\u00e1s tartalmat hordozhat - ultrahangos zaj, \u00e9les \u00fct\u00e9sek, r\u00e1di\u00f3frekvenci\u00e1s interferencia \u00e9s elektromos felv\u00e9telek mind k\u00f6zbej\u00f6hetnek. Ez\u00e9rt nem biztons\u00e1gos strat\u00e9gia, ha egyszer\u0171en abban rem\u00e9nyked\u00fcnk, hogy a mintav\u00e9teli frekvencia el\u00e9g magas.<\/p>\n<p>A minden modern digit\u00e1lis rezg\u00e9selemz\u0151 k\u00e9sz\u00fcl\u00e9kben alkalmazott megold\u00e1s a <strong>\u00e1tlapol\u00f3d\u00e1s elleni sz\u0171r\u0151<\/strong>: egy meredek <a href=\"https:\/\/vibromera.eu\/hu\/glossary\/low-pass-filter\/\">alul\u00e1tereszt\u0151 sz\u0171r\u0151<\/a> a jel\u00fatban elhelyezve <em>el\u0151tt<\/em> az anal\u00f3g-digit\u00e1lis \u00e1talak\u00edt\u00f3 (ADC). Ez a k\u00f6vetkez\u0151k\u00e9ppen m\u0171k\u00f6dik:<\/p>\n<ol>\n<li>A felhaszn\u00e1l\u00f3 be\u00e1ll\u00edtja a k\u00edv\u00e1nt maxim\u00e1lis frekvenci\u00e1t, F<sub>max<\/sub>, az elemz\u00e9shez.<\/li>\n<li>Ennek alapj\u00e1n F<sub>max<\/sub>, az analiz\u00e1tor automatikusan be\u00e1ll\u00edtja az aliasingg\u00e1tl\u00f3 sz\u0171r\u0151 hat\u00e1rfrekvenci\u00e1j\u00e1t k\u00f6zvetlen\u00fcl F<sub>max<\/sub>.<\/li>\n<li>Az anal\u00f3g <a href=\"https:\/\/vibromera.eu\/hu\/glossary\/transducer\/\">\u00e9rz\u00e9kel\u0151<\/a> A jel \u00e1thalad a sz\u0171r\u0151n, amely elt\u00e1vol\u00edt vagy er\u0151sen csillap\u00edt mindent, ami a hat\u00e1r\u00e9rt\u00e9k felett van.<\/li>\n<li>Csak a sz\u0171rt, tiszta jel jut el a mintav\u00e9telez\u00e9shez az ADC-hez.<\/li>\n<\/ol>\n<p>Mivel a sz\u0171r\u0151 elt\u00e1vol\u00edtja a magas frekvenci\u00e1kat, amelyeket a v\u00e1lasztott mintav\u00e9teli frekvencia nem tud kezelni. <em>el\u0151tt<\/em> mintav\u00e9telez\u00e9s t\u00f6rt\u00e9nik, ez fizikailag lehetetlenn\u00e9 teszi az aliasingot. Egy val\u00f3di sz\u0171r\u0151 nem tud v\u00e9gtelen\u00fcl \u00e9lesen lev\u00e1gni, ez\u00e9rt a hat\u00e1r\u00e9rt\u00e9ket valamivel a Nyquist-frekvencia alatt \u00e1ll\u00edtj\u00e1k be, hogy a sz\u0171r\u0151g\u00f6rbe lejt\u0151j\u00e9n hagyjanak egy v\u00e9d\u0151s\u00e1vot. Az aliasingg\u00e1tl\u00f3 sz\u0171r\u0151 minden analiz\u00e1tor egyik legkritikusabb eleme, amely biztos\u00edtja, hogy a kapott FFT a kiv\u00e1lasztott tartom\u00e1nyban a g\u00e9p rezg\u00e9s\u00e9r\u0151l h\u0171 k\u00e9pet adjon. Ne feledje, hogy ennek a sz\u0171r\u00e9snek anal\u00f3gnak kell lennie, \u00e9s meg kell el\u0151znie a digitaliz\u00e1l\u00e1st \u2013 a <a href=\"https:\/\/vibromera.eu\/hu\/glossary\/signal-filtering\/\">digit\u00e1lis sz\u0171r\u00e9s<\/a> miut\u00e1n az ADC nem tudja visszacsin\u00e1lni az alias-t, mert addigra a hamis frekvencia m\u00e1r be van z\u00e1rva az adatokba.<\/p>\n<h2>5. Gyakorlati k\u00f6vetkezm\u00e9nyek az elemz\u0151 sz\u00e1m\u00e1ra<\/h2>\n<p>A terepen dolgoz\u00f3 m\u00e9rn\u00f6k sz\u00e1m\u00e1ra a tanuls\u00e1g az, hogy tiszteletben kell tartani a m\u0171szer frekvenciabe\u00e1ll\u00edt\u00e1sait. Az F<sub>max<\/sub> t\u00fal alacsony ahhoz, hogy j\u00f3l tartsa <a href=\"https:\/\/vibromera.eu\/hu\/glossary\/spectral-leakage\/\">felbont\u00e1s<\/a> az alacsony rend\u0171 cs\u00facsok elrejthetik a fontos magas frekvenci\u00e1j\u00fa inform\u00e1ci\u00f3kat; az aliasoz\u00e1s elleni sz\u0171r\u0151 megv\u00e9di \u00d6nt a hamis cs\u00facsokt\u00f3l, de nem tudja megmutatni az \u00d6n \u00e1ltal kisz\u0171rt energi\u00e1t. A megb\u00edzhat\u00f3 m\u0171szerek ezt automatikusan kezelik - egy hordozhat\u00f3 analiz\u00e1tor, mint p\u00e9ld\u00e1ul a <a href=\"https:\/\/vibromera.eu\/hu\/termek\/balanset-1\/\">Balanset-1A<\/a> az ADC-t megel\u0151z\u0151en hardveres aliasoz\u00e1s elleni sz\u0171r\u00e9st alkalmaz, \u00edgy a diagnosztikai c\u00e9l\u00fa spektrumok \u00e9s a kiegyenl\u00edt\u00e9shez haszn\u00e1lt 1\u00d7 amplit\u00fad\u00f3 \u00e9s f\u00e1zis spektrumok a teljes m\u0171k\u00f6d\u00e9si tartom\u00e1nyban mentesek az aliasozott artefaktumokt\u00f3l. Gyakorlati tanuls\u00e1gok: \u00e1ll\u00edtsuk be az F<sub>max<\/sub> el\u00e9g magas ahhoz, hogy lefedje az \u00d6nt \u00e9rdekl\u0151 legmagasabb hibafrekvenci\u00e1t, b\u00edzzon abban, hogy egy megfelel\u0151en megtervezett analiz\u00e1tor nem fog aliasozni, \u00e9s kezeljen minden megmagyar\u00e1zhatatlan alacsony frekvenci\u00e1j\u00fa cs\u00facsot eg\u00e9szs\u00e9ges gyanakv\u00e1ssal, am\u00edg ki nem z\u00e1rja az egy\u00e9b okokat.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/hu\/glossary\/\">\u2190 Vissza a f\u0151 tartalomjegyz\u00e9khez<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Ismerje meg az aliasingot, a digit\u00e1lis rezg\u00e9sanal\u00edzis egy jelfeldolgoz\u00e1si hib\u00e1j\u00e1t, amely akkor fordul el\u0151, ha a mintav\u00e9teli frekvencia t\u00fal alacsony, \u00e9s ez\u00e1ltal a magas frekvenci\u00e1k az alacsony frekvenci\u00e1kat ut\u00e1nozz\u00e1k.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-20621","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/hu\/wp-json\/wp\/v2\/glossary\/20621","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/hu\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/hu\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/hu\/wp-json\/wp\/v2\/glossary\/20621\/revisions"}],"predecessor-version":[{"id":101190,"href":"https:\/\/vibromera.eu\/hu\/wp-json\/wp\/v2\/glossary\/20621\/revisions\/101190"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/hu\/wp-json\/wp\/v2\/media?parent=20621"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/hu\/wp-json\/wp\/v2\/categories?post=20621"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/hu\/wp-json\/wp\/v2\/tags?post=20621"}],"curies":[{"name":"munkaf\u00fczet","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}