{"id":114,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/envelope-spectrum\/"},"modified":"2026-05-23T22:36:25","modified_gmt":"2026-05-23T22:36:25","slug":"envelope-spectrum","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/tl\/glossary\/envelope-spectrum\/","title":{"rendered":"Ano ang Envelope Spectrum? Demodulated Signal Analysis"},"content":{"rendered":"<h1>Pag-unawa sa Envelope Spectrum<\/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\/tl\/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\/tl\/product\/balanset-1\/\" title=\"Portable balancer at Vibration analyzer 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 full kit portable na balancer at vibration analyzer\" 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\/tl\/product-category\/devices\/\" rel=\"tag\">Devices<\/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\/tl\/product\/balanset-1\/\" title=\"Portable balancer at Vibration analyzer Balanset-1A\">Portable na balancer &#038; vibration analyzer na 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> + VAT (kung naaangkop)<\/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=\"\/tl\/wp-json\/wp\/v2\/glossary\/114?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=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" 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=\"\/tl\/wp-json\/wp\/v2\/glossary\/114?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=\"Add to cart: \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=\"\">Add to cart<\/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\/tl\/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\/tl\/product\/vibration-sensor\/\" title=\"Sensor ng vibraci\u00f3n\">\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 vibration sensor close-up\" 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\/tl\/product-category\/parts\/\" rel=\"tag\">Parts<\/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\/tl\/product\/vibration-sensor\/\" title=\"Sensor ng vibraci\u00f3n\">Sensor ng vibraci\u00f3n<\/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> + VAT (kung naaangkop)<\/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=\"\/tl\/wp-json\/wp\/v2\/glossary\/114?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=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" 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=\"\/tl\/wp-json\/wp\/v2\/glossary\/114?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=\"Add to cart: \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=\"\">Add to cart<\/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\/tl\/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\/tl\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optical Sensor (Laser Tachometer)\">\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=\"Optical Sensor (Laser Tachometer)\" 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\/tl\/product-category\/parts\/\" rel=\"tag\">Parts<\/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\/tl\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optical Sensor (Laser Tachometer)\">Optical Sensor (Laser Tachometer)<\/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> + VAT (kung naaangkop)<\/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=\"\/tl\/wp-json\/wp\/v2\/glossary\/114?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=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" 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=\"\/tl\/wp-json\/wp\/v2\/glossary\/114?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=\"Add to cart: \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=\"\">Add to cart<\/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\/tl\/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\/tl\/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 balancing kit: carrying case, multi-channel signal conditioner, handheld analyzer, magnetic base, mga vibration sensor, at mga coiled cable.\" 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\/tl\/product-category\/devices\/\" rel=\"tag\">Devices<\/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\/tl\/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> + VAT (kung naaangkop)<\/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=\"\/tl\/wp-json\/wp\/v2\/glossary\/114?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=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" 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=\"\/tl\/wp-json\/wp\/v2\/glossary\/114?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=\"Add to cart: \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=\"\">Add to cart<\/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\/tl\/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\/tl\/product\/magnet-stand\/\" title=\"Magnetic Stand 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=\"Magnet base.\" 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\/tl\/product-category\/parts\/\" 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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>The <strong>envelope spectrum<\/strong> ay ang dalas <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/spectrum\/\">spectrum<\/a> nakukuha sa pamamagitan ng pagkompute ng <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/fft\/\">FFT<\/a> ng envelope \u2014 ang amplitude-demodulated na signal \u2014 na ginawa sa panahon ng <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/envelope-analysis\/\">envelope analysis<\/a>. Inihahayag nito ang <em>repetition rate<\/em> ng mga epekto at modulasyon na nakabaon sa high-frequency na <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/vibration\/\">vibration<\/a>, na ginagawa itong pinaka-makapangyarihang pamamaraan para sa pag-detect ng <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/bearing-defects\/\">mga depekto sa rolling-element bearing<\/a>. Kung saan ang isang karaniwang velocity spectrum ay nagpapakita ng mga carrier frequency \u2014 ang mga structural resonance na tinutugtog ng mga epekto \u2014 ang envelope spectrum ay nagpapakita ng rate ng pagsasalabay ng mga epektong iyon, na direktang naka-mapa sa <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/bearing-fault-frequencies\/\">bearing fault frequencies<\/a> BPFO, BPFI, BSF at FTF.<\/p>\n<p>Sa madaling salita, ang envelope spectrum sa bearing diagnostics ay katulad ng ordinaryong spectrum sa <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/unbalance\/\">unbalance<\/a> and <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/misalignment\/\">misalignment<\/a>: ang pangunahing kagamitan na nagpapahintulot ng maagang pag-detect ng depekto. Kinukuha nito ang mga malinis na diagnostic frequency mula sa high-frequency na &#8220;hash&#8221; na hindi malulutas ng isang velocity spectrum.<\/p>\n<h2>1. Paano Nalilikha ang Envelope Spectrum<\/h2>\n<p>Ang isang lokal na depekto \u2014 isang spall sa isang lahi, isang hukay sa isang roller \u2014 ay tumatama sa isang matigas na kontak nang isang beses bawat daanan at nagpapasigla ng mga natural na resonance ng bearing sa ilang kHz. Ang mga resonance na iyon ang <em>carrier<\/em>; ang regular na serye ng mga epekto <em>modulates<\/em> ang amplitude ng carrier. Inaalis ng proseso ng envelope ang carrier at pinananatili ang modulasyon:<\/p>\n<ol>\n<li><strong>Band-pass filter:<\/strong> ihiwalay ang isang mataas na dalas na banda na mayaman sa enerhiya ng resonance (karaniwang 1\u201310 kHz), inalis ang mababang dalas na vibration mula sa unbalance at misalignment. A <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/band-pass-filter\/\">band-pass filter<\/a> does this job.<\/li>\n<li><strong>Envelope detection (<a href=\"https:\/\/vibromera.eu\/tl\/glossary\/demodulation\/\">demodulation<\/a>):<\/strong> i-rectify ang na-filter na signal at subaybayan ang balangkas ng amplitude nito \u2014 ang envelope.<\/li>\n<li><strong>Low-pass filter:<\/strong> pakinisin ang envelope upang alisin ang anumang natitirang carrier ripple.<\/li>\n<li><strong>FFT:<\/strong> i-transform ang envelope sa frequency domain.<\/li>\n<li><strong>Result:<\/strong> isang envelope spectrum na ang mga tuktok ay nasa mga rate ng pag-ulit ng epekto.<\/li>\n<\/ol>\n<p>Ang pangunahing ideya ay ang mga modulation frequency na nakuha ng chain na ito <em>are<\/em> ang mga fault frequency ng bearing. Ang mataas na dalas na carrier ay nagsisilbing mensahero lamang, tumutunog sa bawat pagkakataon na matamaan ang isang depekto.<\/p>\n<h2>2. Pagbabasa ng isang Envelope Spectrum<\/h2>\n<h3>Malusog na bearing<\/h3>\n<ul>\n<li>Mababang kabuuang antas ng envelope.<\/li>\n<li>Isang patag o bahagyang nagbabagong trace na walang malinaw na mga tuktok.<\/li>\n<li>Isang noise floor na nasa o mas mababa sa sensitivity ng instrumento.<\/li>\n<\/ul>\n<h3>Sira o depektibong bearing<\/h3>\n<ul>\n<li><strong>Pangunahing tuktok:<\/strong> sa isang fault frequency ng bearing \u2014 <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/bpfo\/\">BPFO<\/a>, <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/bpfi\/\">BPFI<\/a>, <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/bsf\/\">BSF<\/a> or <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/ftf\/\">FTF<\/a>.<\/li>\n<li><strong>Harmonics:<\/strong> Ang 2\u00d7, 3\u00d7, 4\u00d7 ng fault frequency ay lumalabas at lumalaki habang lumalala ang depekto.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/tl\/glossary\/sidebands\/\">Sidebands<\/a>:<\/strong> nakaayos sa cage (FTF) o <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/running-speed\/\">running-speed<\/a> mga agwat na (1\u00d7) sa paligid ng fault peak, na sumasalamin sa load modulation habang ang depekto ay umiikot papasok at palabas ng load zone.<\/li>\n<li><strong>Mataas na noise floor:<\/strong> ang kabuuang noise floor ay tumataas habang kumakalat ang pagkasira ng ibabaw.<\/li>\n<\/ul>\n<p>Ang katumbas na tuktok ay nagpapakita sa inyo <em>which<\/em> elemento ay nabigo: ang isang tuktok sa BPFO ay tumutukoy sa panlabas na lahi, ang BPFI sa panloob na lahi, ang BSF sa isang rolling element, at ang FTF sa hawla. Dahil ang BPFI at BSF ay umiikot sa load zone, sila ay amplitude-modulated at samakatuwid ay napapalibutan ng mga sideband; ang isang depekto ng BPFO sa nakatayo na load zone ay karaniwang hindi.<\/p>\n<h2>3. Bakit Mas Mahusay Ito Kaysa sa Karaniwang Spectrum<\/h2>\n<p>Tatlong katangian ang nagpapawalang-bisa sa envelope spectrum para sa gawain ng bearing:<\/p>\n<ul>\n<li><strong>Maagang pagtuklas:<\/strong> maaasahan itong mag-flag ng paunang pinsala nang maraming buwan \u2014 madalas na 6 hanggang 18 \u2014 bago maging makikita ang isang fault sa velocity spectrum, na nagbibigay ng pinakamataas na agos para sa mga parte at pagpaplano. Sensitibo ito sa mga micro-spall na halos walang enerhiya sa isang velocity scale.<\/li>\n<li><strong>Malinaw na mga palatandaan ng sira:<\/strong> dahil ang unbalance at misalignment ay na-filter bago ang demodulation, ang mga fault frequency at ang kanilang mga sideband ay malinaw na nakikita laban sa isang malinis na background, mas madaling basahin kaysa sa isang maraming broadband spectrum.<\/li>\n<li><strong>Pagkuha ng mababang enerhiyang pangyayari:<\/strong> ang isang napakaliit na epekto ay may napakaliit na enerhiya sa mababang dalas ngunit epektibong nag-excite ng mataas na dalas na resonansya. Ang envelope processing ay palakas ang eksakto itong mga mahina, mataas na dalas na diagnostic signal.<\/li>\n<\/ul>\n<p>Ito ang dahilan kung bakit ang envelope analysis ay kasabay ng <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/shock-pulse-method\/\">shock pulse method<\/a> and <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/spike-energy\/\">spike energy<\/a> bilang isang pundasyon ng pagsubaybay sa kondisyon ng bearing, at bakit <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/kurtosis\/\">kurtosis<\/a> madalas na tumataas nang sabay sa antas ng envelope.<\/p>\n<h2>4. Isang Step-by-Step Interpretation Workflow<\/h2>\n<p>Upang gawing diagnosis ang isang envelope plot:<\/p>\n<ol>\n<li><strong>Kalkulahin ang mga dalas ng sira<\/strong> para sa naka-install na bearing \u2014 BPFO, BPFI, BSF at FTF \u2014 mula sa geometriya nito at sa bilis ng shaft. Ang aming <a href=\"https:\/\/vibromera.eu\/tl\/calculators\/bearing-defect-frequencies\/\">Bearing Defect Frequency Calculator<\/a> nagbabalik ng lahat ng apat sa loob ng ilang segundo, at ang <a href=\"https:\/\/vibromera.eu\/tl\/calculators\/harmonic-frequency-calculator\/\">Harmonic Frequency Calculator<\/a> tumutulong na i-map ang mga order.<\/li>\n<li><strong>Hanapin ang spectrum<\/strong> para sa mga tuktok sa mga frequency na iyon, na nagpapahintulot ng halos \u00b15% para sa slip at tolerance sa pagkalkula.<\/li>\n<li><strong>Kumpirmahin sa pamamagitan ng harmonics<\/strong> \u2014 ang tunay na bearing fault ay nagpapakita ng isang serye, hindi lamang isang solong spike.<\/li>\n<li><strong>Suriin ang spacing ng sideband<\/strong> para sa karagdagang kumpirmasyon ng pinagmulan.<\/li>\n<li><strong>Diagnostikuin at graduhan<\/strong> ang depekto mula sa katumbas na elemento at amplitude.<\/li>\n<\/ol>\n<p>Isang magaspang na sukat ng severity, na ipinahayag sa g ng envelope acceleration, ay nakakatulong sa pag-prioritize ng aksyon: isang <strong>incipient<\/strong> defect (\u22480.5\u20131 g) ay nagpapakita ng isang maliit na iisang peak \u2014 subaybayan buwan-buwan; isang <strong>early<\/strong> depekto (\u22481\u20133 g) ay nagpapakita ng malinaw na tuktok na may isa o dalawang harmonics \u2014 subaybayan linggu-linggo at planuhin ang pagpapalit sa loob ng mga buwan; isang <strong>moderate<\/strong> depekto (\u22483\u201310 g) ay nagpapakita ng matibay na tuktok, maraming harmonics at sideband \u2014 planuhin ang pagpapalit sa loob ng mga linggo; at isang <strong>advanced<\/strong> depekto (&gt;10 g) ay nagpapakita ng napakataas na amplitude, maraming harmonics at mataas na noise floor \u2014 palitan agad. Ang eksaktong threshold ay depende sa sukat at bilis ng bearing, kaya palaging bigyang-kahulugan ang mga ito laban sa isang <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/baseline\/\">baseline<\/a> and your own <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/trending\/\">trending<\/a> history.<\/p>\n<h2>5. Paggamit ng Envelope Spectrum sa Larangan<\/h2>\n<p>In a <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/condition-monitoring\/\">condition-monitoring<\/a> programa, ang envelope spectrum ay dapat isama sa bawat ruta ng bearing: subaybayan ang amplitude ng envelope sa bawat fault frequency at makakakuha kayo ng babala nang mas maaga \u2014 at mas tiyak \u2014 kaysa sa simpleng pagsubaybay ng kabuuang vibration lamang. Sa paglutas ng problema, napakahalaga nito kapag mataas ang kabuuang antas ngunit malabo ang karaniwang spectrum, kapag hinihinalang may problema sa bearing, kapag kailangan ninyong kumpirmahin na talagang kinakailangan ang pagpapalit, o kapag kailangan ninyong tukuyin kung aling <em>which<\/em> bearing sa isang multi-bearing train ang nagkukukulang. Ang isang portable na two-channel na instrumento tulad ng <a href=\"https:\/\/vibromera.eu\/tl\/product\/balanset-1\/\">Balanset-1A<\/a> ay nagbibigay-daan sa isang technician na makuha ang high-frequency vibration nang direkta sa bawat housing gamit ang isang <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/accelerometer\/\">accelerometer<\/a>, kaya ang parehong field visit na sumusuri ng <a href=\"https:\/\/vibromera.eu\/tl\/glossary\/residual-unbalance\/\">residual na hindi balansado<\/a> pagkatapos ng isang balancing job ay maaari ring suriin ang mga bearing para sa nagsisimulang pinsala.<\/p>\n<h2>6. Envelope Spectrum vs Envelope Analysis<\/h2>\n<p>Madalas na ginagamit nang palitan ang dalawang terminong ito, ngunit kapaki-pakinabang na mapanatili ang tamang hierarchy. <strong>Envelope analysis<\/strong> ay ang kumpletong proseso \u2014 band-pass filtering, demodulation at FFT. Ang <strong>envelope signal<\/strong> ay ang time-domain demodulated waveform, isang intermediate na produkto. Ang <strong>envelope spectrum<\/strong> ay ang panghuling frequency plot, ang resulta na aktwal na binibigyang-kahulugan ng isang analyst. Sa madaling salita, ang envelope spectrum ay ang output ng envelope analysis, at ito ang gold standard para sa pagtukoy ng depekto ng bearing: ang kakayahang maipakita ang mga fault frequency bago pa man lumabas ang mga ito sa isang karaniwang spectrum, kasama ang malinaw at element-specific na mga signature, ay ginagawa itong isang mahalagang bahagi ng anumang predictive-maintenance toolkit para sa rotating equipment.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/tl\/glossary\/\">\u2190 Bumalik sa Pangunahing Index<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Matuto tungkol sa envelope spectrum, FFT ng envelope signal mula sa demodulation, na nagpapakita ng mga fault frequency ng bearing sa pamamagitan ng pagkuha ng mga rate ng pag-ulit ng epekto mula sa mataas na dalas na resonances.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-114","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/glossary\/114","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/glossary\/114\/revisions"}],"predecessor-version":[{"id":101282,"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/glossary\/114\/revisions\/101282"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/media?parent=114"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/categories?post=114"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/tags?post=114"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}