{"id":171,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/n-plus-2-method\/"},"modified":"2026-07-03T10:11:26","modified_gmt":"2026-07-03T10:11:26","slug":"n-plus-2-method","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/ro\/glossary\/n-plus-2-method\/","title":{"rendered":"Ce este metoda N+2 \u00een echilibrarea multi-plan?"},"content":{"rendered":"<h1>\u00cen\u021belegerea metodei N+2 \u00een echilibrarea multi-plan<\/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\/ro\/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\/ro\/product\/balanset-1\/\" title=\"Echilibrator portabil \u0219i analizor de vibra\u021bii 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 kit complet \u2014 echilibrator portabil \u0219i analizor de vibra\u021bii\" 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\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/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\/ro\/product\/balanset-1\/\" title=\"Echilibrator portabil \u0219i analizor de vibra\u021bii Balanset-1A\">Echilibrator portabil \u0219i analizor de vibra\u021bii 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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/171?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/171?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Portable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201ePortable balancer &amp; Vibration analyzer Balanset-1A\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/vibration-sensor\/\" title=\"Senzor de vibra\u021bii\">\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=\"Prim-plan senzor de vibra\u021bii Balanset-1A\" 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\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/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\/ro\/product\/vibration-sensor\/\" title=\"Senzor de vibra\u021bii\">Senzor de vibra\u021bii<\/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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/171?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/171?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Vibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201eVibration sensor\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Senzor optic (tahometru cu laser)\">\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=\"Senzor optic (tahometru cu laser)\" 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\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/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\/ro\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Senzor optic (tahometru cu laser)\">Senzor optic (tahometru cu laser)<\/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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/171?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/171?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Optical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201eOptical Sensor (Laser Tachometer)\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/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=\"Kit de echilibrare a rotorului Vibromera: geant\u0103 de transport, condi\u021bioner de semnal multicanal, analizor portabil, baz\u0103 magnetic\u0103, senzori de vibra\u021bii \u0219i cabluri spiralate.\" 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\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/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\/ro\/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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/171?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/171?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Balanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201eBalanset-4\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/magnet-stand\/\" title=\"Stand magnetic 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=\"Baza magnetic\u0103.\" 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\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/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\/ro\/product\/magnet-stand\/\" title=\"Stand magnetic Insize-60-kgf\">Stand magnetic 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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/171?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" 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shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/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\/ro\/product\/reflective-tape\/\" title=\"Band\u0103 reflectorizant\u0103\">\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=\"Band\u0103 reflectorizant\u0103\" 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\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/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\/ro\/product\/reflective-tape\/\" title=\"Band\u0103 reflectorizant\u0103\">Band\u0103 reflectorizant\u0103<\/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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/171?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/171?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Reflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201eReflective tape\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/dynamic-balancer-balanset-1a\/\" title=\"Echilibrator dinamic &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=\"Con\u021binutul kitului Balanset-1A cu unitate de interfa\u021b\u0103, senzori, tahometru \u0219i accesorii\" 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\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/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\/ro\/product\/dynamic-balancer-balanset-1a\/\" title=\"Echilibrator dinamic &quot;Balanset-1A&quot; OEM\">Echilibrator dinamic \"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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/171?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/171?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Dynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201eDynamic balancer \u201cBalanset-1A\u201d OEM\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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>The <strong>Metoda N+2<\/strong> este un avansat <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/echilibrare\/\">echilibrare<\/a> procedur\u0103 utilizat\u0103 pentru <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/multi-plane-balancing\/\">echilibrare multiplan<\/a> de <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/flexible-rotor\/\">rotoare flexibile<\/a>. Numele s\u0103u provine dintr-o regul\u0103 a planurilor de corec\u021bie formalizat\u0103 \u00een ISO 21940-12 (fostul ISO 11342): pentru a echilibra un rotor prin <em>N<\/em> viteze critice flexurale (de rezonan\u021b\u0103), c\u00e2nd se efectueaz\u0103 \u0219i echilibrarea rigid\u0103 la vitez\u0103 mic\u0103, rotorul are \u00een general nevoie de N <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/correction-plane\/\">planuri de corec\u021bie<\/a> pentru cele N moduri flexibile plus \u00eenc\u0103 dou\u0103 pentru dezechilibrul de corp rigid (static \u0219i de cuplu) \u2014 \u00een total N+2 plane. Nu confunda\u021bi acest lucru cu num\u0103rul de rul\u0103ri: \u00een procedura practic\u0103 a coeficien\u021bilor de influen\u021b\u0103 descris\u0103 \u00een acest articol, <em>N<\/em> indic\u0103 num\u0103rul de plane de corec\u021bie utilizate efectiv, iar lucrarea necesit\u0103 apoi N+2 rul\u0103ri \u2014 o referin\u021b\u0103 ini\u021bial\u0103, N <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/trial-weight\/\">greutate de prob\u0103<\/a> rul\u0103ri (c\u00e2te una pentru fiecare plan) \u0219i o verificare final\u0103. Metoda extinde logica <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/two-plane-balancing\/\">echilibrare pe dou\u0103 planuri<\/a> pentru rotoarele care necesit\u0103 trei sau mai multe planuri, o situa\u021bie frecvent\u0103 \u00een cazul turbinelor de mare vitez\u0103, al compresoarelor, al generatoarelor \u0219i al cilindrilor lungi pentru ma\u0219inile de fabricat h\u00e2rtie.<\/p>\n<h2>1. Defini\u021bie: Ce este metoda N+2<\/h2>\n<p>A <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/rigid-rotor\/\">rotor rigid<\/a> func\u021bioneaz\u0103 sub prima sa <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/critical-speed\/\">vitez\u0103 critic\u0103<\/a> poate fi adus \u00een limite de toleran\u021b\u0103 printr-o simpl\u0103 corec\u021bie pe un singur plan sau pe dou\u0103 planuri, deoarece <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/unbalance\/\">dezechilibru<\/a> Distribu\u021bia dezechilibrului nu \u00ee\u0219i modific\u0103 forma odat\u0103 cu viteza. Un rotor flexibil este diferit: odat\u0103 ce func\u021bioneaz\u0103 la o vitez\u0103 critic\u0103 sau peste aceasta, se \u00eendoaie, iar aceast\u0103 \u00eendoire redistribuie dezechilibrul efectiv de-a lungul lungimii sale. Corectarea acestuia necesit\u0103, prin urmare, mai multe planuri distribuite de-a lungul arborelui \u0219i o metod\u0103 care s\u0103 poat\u0103 deslu\u0219i modul \u00een care fiecare plan influen\u021beaz\u0103 vibra\u021biile \u00een toate celelalte zone. Metoda N+2 este acea procedur\u0103 sistematic\u0103 de calcul \u2014 o modalitate disciplinat\u0103 de a caracteriza complet rotorul, apoi de a g\u0103si cea mai bun\u0103 corec\u021bie pentru fiecare plan simultan.<\/p>\n<h2>2. Bazele matematice<\/h2>\n<p>Metoda N+2 este construit\u0103 pe <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/influence-coefficient\/\">metoda coeficientului de influen\u021b\u0103<\/a>, generalizat de la unul sau dou\u0103 planuri la mai multe.<\/p>\n<h3>Matricea Coeficientului de Influen\u021b\u0103<\/h3>\n<p>Pentru un rotor cu N planuri de corec\u021bie \u0219i M puncte de m\u0103surare (de obicei M \u2265 N), sistemul este descris de o matrice M\u00d7N de coeficien\u021bi de influen\u021b\u0103. Fiecare coeficient \u03b1<sub>ij<\/sub> ilustreaz\u0103 modul \u00een care o greutate unitar\u0103 plasat\u0103 \u00een planul de corec\u021bie <em>j<\/em> afecteaz\u0103 vibra\u021bia \u00eenregistrat\u0103 la locul m\u0103sur\u0103rii <em>i<\/em>. Cu patru planuri de corec\u021bie \u0219i patru puncte de m\u0103surare, de exemplu:<\/p>\n<ul>\n<li>\u03b1<sub>11<\/sub>, \u03b1<sub>12<\/sub>, \u03b1<sub>13<\/sub>, \u03b1<sub>14<\/sub> descrie\u021bi modul \u00een care fiecare dintre cele patru planuri influen\u021beaz\u0103 punctul de m\u0103surare 1;<\/li>\n<li>\u03b1<sub>21<\/sub>, \u03b1<sub>22<\/sub>, \u03b1<sub>23<\/sub>, \u03b1<sub>24<\/sub> descrie\u021bi efectele asupra punctului de m\u0103surare 2;<\/li>\n<li>\u0219i tot a\u0219a pentru loca\u021biile 3 \u0219i 4.<\/li>\n<\/ul>\n<p>Astfel se ob\u021bine o matrice 4\u00d74 care necesit\u0103 determinarea a \u0219aisprezece coeficien\u021bi de influen\u021b\u0103. Fiecare coeficient este o m\u0103rime complex\u0103, av\u00e2nd at\u00e2t o valoare absolut\u0103, c\u00e2t \u0219i o <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/phase\/\">faz\u0103<\/a> unghi, deoarece r\u0103spunsul rotorului este \u00eent\u00e2rziat fa\u021b\u0103 de for\u021ba aplicat\u0103.<\/p>\n<h3>Rezolvarea sistemului<\/h3>\n<p>Odat\u0103 ce to\u021bi coeficien\u021bii sunt cunoscu\u021bi, programul de echilibrare rezolv\u0103 un sistem de M ecua\u021bii vectoriale simultane pentru a determina cele N greut\u0103\u021bi de corec\u021bie (W<sub>1<\/sub>, W<sub>2<\/sub>, \u2026 W<sub>n<\/sub>) care minimizeaz\u0103 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/vibration\/\">vibra\u021bii<\/a> \u00een toate loca\u021biile M simultan. Acest lucru se bazeaz\u0103 pe <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/vector-addition\/\">matematic\u0103 vectorial\u0103<\/a> \u0219i algoritmi de inversare a matricei (sau de minimizare a p\u0103tratelor). C\u00e2nd M dep\u0103\u0219e\u0219te N, sistemul este supradeterminat, iar o solu\u021bie de minimizare a p\u0103tratelor identific\u0103 setul de corec\u021bii care asigur\u0103 cea mai mic\u0103 vibra\u021bie rezidual\u0103 la nivelul tuturor senzorilor \u2014 un rezultat mai robust \u00een prezen\u021ba zgomotului de m\u0103surare.<\/p>\n<h2>3. Procedura N+2, pas cu pas<\/h2>\n<p>Procedura urmeaz\u0103 o secven\u021b\u0103 care se adapteaz\u0103 \u00een mod natural la num\u0103rul de planuri de corec\u021bie.<\/p>\n<h3>Rularea 1 \u2014 M\u0103surarea ini\u021bial\u0103 de referin\u021b\u0103<\/h3>\n<p>Rotorul este pus \u00een func\u021biune la tura\u021bia de echilibrare \u00een starea sa ini\u021bial\u0103 de dezechilibru. Amplitudinea vibra\u021biilor \u0219i <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/phase\/\">faz\u0103<\/a> sunt \u00eenregistrate \u00een toate cele M puncte \u2014 de obicei la fiecare punct de sprijin \u0219i, uneori, \u00een pozi\u021bii intermediare pentru a surprinde mi\u0219carea din mijlocul deschiderii. Aceste m\u0103sur\u0103tori stabilesc vectorii de dezechilibru de referin\u021b\u0103 care trebuie corecta\u021bi.<\/p>\n<h3>Rul\u0103rile 2 p\u00e2n\u0103 la N+1 \u2014 Rul\u0103ri secven\u021biale cu greutate de prob\u0103<\/h3>\n<p>Pentru fiecare plan de corec\u021bie \u00een parte, de la 1 la N:<\/p>\n<ol>\n<li>Opri\u021bi rotorul \u0219i ata\u0219a\u021bi o greutate de testare cu masa cunoscut\u0103 \u00eentr-o pozi\u021bie unghiular\u0103 cunoscut\u0103, numai \u00een acel plan.<\/li>\n<li>Porni\u021bi rotorul la aceea\u0219i vitez\u0103 \u0219i m\u0103sura\u021bi vibra\u021biile \u00een toate cele M puncte.<\/li>\n<li>Modificarea vibra\u021biei \u2014 vectorul curent minus vectorul de referin\u021b\u0103 \u2014 arat\u0103 modul \u00een care acel plan specific influen\u021beaz\u0103 fiecare punct de m\u0103surare, gener\u00e2nd o coloan\u0103 a matricei de coeficien\u021bi.<\/li>\n<li>\u00cendep\u0103rta\u021bi greutatea de prob\u0103 \u00eenainte de a trece la urm\u0103torul plan (cu excep\u021bia cazului \u00een care se utilizeaz\u0103 varianta deliberat\u0103 &#8220;leave-in&#8221; de men\u021binere a greut\u0103\u021bii montate pentru a economisi cicluri).<\/li>\n<\/ol>\n<p>Dup\u0103 efectuarea tuturor celor N \u00eencerc\u0103ri, se cunoa\u0219te matricea complet\u0103 M\u00d7N a coeficien\u021bilor de influen\u021b\u0103.<\/p>\n<h3>Faza de calcul<\/h3>\n<p>Instrumentul rezolv\u0103 ecua\u021biile matriciale pentru a calcula valoarea necesar\u0103 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/correction-weight\/\">ponderi de corec\u021bie<\/a> \u2014 at\u00e2t masa, c\u00e2t \u0219i unghiul \u2014 pentru fiecare dintre cele N planuri.<\/p>\n<h3>Rulare N+2 \u2014 Verificare<\/h3>\n<p>Toate cele N corec\u021bii calculate sunt implementate definitiv, iar o verificare final\u0103 confirm\u0103 c\u0103 vibra\u021biile au sc\u0103zut la niveluri acceptabile \u00een fiecare punct de m\u0103surare. Dac\u0103 rezultatul nu este \u00eenc\u0103 satisf\u0103c\u0103tor, o <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/trim-balance\/\">echilibrare de finisare<\/a> sau se efectueaz\u0103 o nou\u0103 itera\u021bie folosind coeficien\u021bii deja disponibili.<\/p>\n<h2>4. Exemplu rezolvat: Echilibrarea \u00een patru planuri (N = 4)<\/h2>\n<p>Pentru un rotor lung \u0219i flexibil care necesit\u0103 patru plane de corec\u021bie:<\/p>\n<ul>\n<li><strong>Total runs:<\/strong> 4 + 2 = 6.<\/li>\n<li><strong>Rularea 1:<\/strong> m\u0103surarea ini\u021bial\u0103 la to\u021bi cei patru rulmen\u021bi.<\/li>\n<li><strong>Rularea 2:<\/strong> greutate de prob\u0103 \u00een Planul 1, m\u0103sura\u021bi to\u021bi cei patru rulmen\u021bi.<\/li>\n<li><strong>Rularea 3:<\/strong> cu greutate de prob\u0103 \u00een Planul 2, m\u0103sura\u021bi to\u021bi cei patru rulmen\u021bi.<\/li>\n<li><strong>Runda 4:<\/strong> greutate de prob\u0103 \u00een Planul 3, m\u0103sura\u021bi to\u021bi cei patru rulmen\u021bi.<\/li>\n<li><strong>Runda 5:<\/strong> greutate de prob\u0103 \u00een Planul 4, m\u0103sura\u021bi to\u021bi cei patru rulmen\u021bi.<\/li>\n<li><strong>Runda 6:<\/strong> verificare cu toate cele patru corec\u021bii instalate.<\/li>\n<\/ul>\n<p>Astfel se construie\u0219te o matrice 4\u00d74 cu \u0219aisprezece coeficien\u021bi, care este rezolvat\u0103 pentru a g\u0103si cele patru ponderi de corec\u021bie optime. Aceea\u0219i opera\u021bie aritmetic\u0103, aplicat\u0103 unei sarcini mai simple, st\u0103 la baza unui <a href=\"https:\/\/vibromera.eu\/ro\/calculators\/influence-coefficient-calculator\/\">calculator al coeficientului de influen\u021b\u0103<\/a>, care rezolv\u0103 cazul planului unic \u0219i face ca metoda vectorial\u0103 de baz\u0103 s\u0103 fie u\u0219or de \u00een\u021beles \u00eenainte de extinderea la scar\u0103 mai mare.<\/p>\n<h2>5. Avantajele metodei N+2<\/h2>\n<p>Aceast\u0103 abordare ofer\u0103 c\u00e2teva avantaje importante pentru lucr\u0103rile pe mai multe planuri:<\/p>\n<ul>\n<li><strong>Sistematic \u0219i complet:<\/strong> fiecare plan de corec\u021bie este testat separat, oferind o caracterizare complet\u0103 a <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/rotor-bearing-system\/\">sistem rotor-rulment<\/a>&#8216;s r\u0103spuns pe toate planurile \u0219i \u00een toate loca\u021biile.<\/li>\n<li><strong>Rezult\u0103 o cuplare \u00eencruci\u0219at\u0103 complex\u0103:<\/strong> \u00een cazul rotoarelor flexibile, o greutate plasat\u0103 \u00een orice plan poate influen\u021ba vibra\u021biile la fiecare rulment; matricea \u00eenregistreaz\u0103 \u00een mod explicit toate aceste interac\u021biuni.<\/li>\n<li><strong>Riguros din punct de vedere matematic:<\/strong> utilizeaz\u0103 tehnici consacrate din algebra liniar\u0103 (inversarea matricilor, metoda celor mai mici p\u0103trate) care ofer\u0103 solu\u021bii optime atunci c\u00e2nd sistemul se comport\u0103 liniar.<\/li>\n<li><strong>Strategie flexibil\u0103 de m\u0103surare:<\/strong> Permiterea ca M s\u0103 dep\u0103\u0219easc\u0103 N duce la un sistem supradeterminat, care este mai rezistent la zgomot.<\/li>\n<li><strong>Standardul industrial pentru rotoare complexe:<\/strong> este metoda recunoscut\u0103 pentru turbomotoarele de mare vitez\u0103 \u0219i alte aplica\u021bii critice cu rotor flexibil.<\/li>\n<\/ul>\n<h2>6. Provoc\u0103ri \u0219i limit\u0103ri<\/h2>\n<p>Echilibrarea pe mai multe planuri prin metoda N+2 prezint\u0103, de asemenea, dificult\u0103\u021bi reale:<\/p>\n<ul>\n<li><strong>Complexitate sporit\u0103:<\/strong> num\u0103rul de cicluri de testare cre\u0219te liniar odat\u0103 cu num\u0103rul de planuri. O echilibrare pe \u0219ase planuri necesit\u0103 opt cicluri, ceea ce duce la o cre\u0219tere semnificativ\u0103 a timpului, a costurilor \u0219i a uzurii ma\u0219inii.<\/li>\n<li><strong>Cerin\u021be privind precizia m\u0103sur\u0103torilor:<\/strong> Rezolvarea sistemelor matriciale mari amplific\u0103 efectul erorilor de m\u0103surare. Instrumenta\u021bia de \u00eenalt\u0103 calitate \u0219i tehnica atent\u0103 sunt esen\u021biale.<\/li>\n<li><strong>Stabilitate numeric\u0103:<\/strong> inversarea matricei poate deveni prost condi\u021bionat\u0103 atunci c\u00e2nd planurile de corec\u021bie sunt prea apropiate, c\u00e2nd punctele de m\u0103surare alese nu reu\u0219esc s\u0103 surprind\u0103 r\u0103spunsul rotorului sau c\u00e2nd greut\u0103\u021bile de testare produc doar modific\u0103ri marginale ale vibra\u021biilor.<\/li>\n<li><strong>Timp \u0219i cost:<\/strong> fiecare plan suplimentar implic\u0103 o nou\u0103 rulare, prelungind timpul de nefunc\u021bionare \u0219i efortul de munc\u0103; \u00een cazul echipamentelor critice, acest aspect trebuie pus \u00een balan\u021b\u0103 cu \u00eembun\u0103t\u0103\u021birea calit\u0103\u021bii echilibr\u0103rii.<\/li>\n<li><strong>Necesit\u0103 un software avansat:<\/strong> Rezolvarea sistemelor de ecua\u021bii vectoriale complexe de dimensiunea N\u00d7N dep\u0103\u0219e\u0219te cu mult posibilit\u0103\u021bile calculului manual, astfel \u00eenc\u00e2t este absolut necesar\u0103 utilizarea unui software specializat de echilibrare multiplan.<\/li>\n<\/ul>\n<h2>7. C\u00e2nd se utilizeaz\u0103 metoda N+2<\/h2>\n<p>Metoda este adecvat\u0103 atunci c\u00e2nd:<\/p>\n<ul>\n<li><strong>Rotorul este cu adev\u0103rat flexibil:<\/strong> func\u021bioneaz\u0103 peste primul s\u0103u nivel \u2014 \u0219i, eventual, peste al doilea sau al treilea \u2014 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/critical-speed\/\">vitez\u0103 critic\u0103<\/a>.<\/li>\n<li><strong>Rotorul este lung \u0219i sub\u021bire:<\/strong> un raport lungime-diametru ridicat implic\u0103 o deformare semnificativ\u0103 a arborelui \u00een timpul func\u021bion\u0103rii.<\/li>\n<li><strong>Echilibrarea pe dou\u0103 planuri s-a dovedit a fi insuficient\u0103:<\/strong> earlier <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/two-plane-balancing\/\">dou\u0103 planuri<\/a> \u00eencerc\u0103rile nu au reu\u0219it s\u0103 conduc\u0103 la un rezultat acceptabil.<\/li>\n<li><strong>Trebuie parcurse mai multe viteze critice<\/strong> \u00een timpul func\u021bion\u0103rii normale.<\/li>\n<li><strong>Echipamentul este de mare valoare:<\/strong> turbine, compresoare sau generatoare critice, \u00een cazul c\u0103rora se justific\u0103 o echilibrare complet\u0103.<\/li>\n<li><strong>Vibra\u021biile sunt puternice \u00een zonele intermediare,<\/strong> \u00eentre lag\u0103rele de cap\u0103t, indic\u00e2nd un dezechilibru la mijlocul deschiderii pe care corec\u021bia planului de cap\u0103t nu \u00eel poate remedia.<\/li>\n<\/ul>\n<h2>8. Alternativ\u0103: Echilibrarea modal\u0103<\/h2>\n<p>Pentru cele mai flexibile rotoare, <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/modal-balancing\/\">echilibrare modal\u0103<\/a> poate dep\u0103\u0219i performan\u021bele abord\u0103rii conven\u021bionale N+2. \u00cen loc s\u0103 reduc\u0103 vibra\u021biile la viteze specifice, echilibrarea modal\u0103 vizeaz\u0103 modurile de vibra\u021bie specifice pe r\u00e2nd, valorific\u00e2nd rotorului&#8217;s <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/mode-shape\/\">forme de mod<\/a> pentru a ob\u021bine un rezultat cu mai pu\u021bine \u00eencerc\u0103ri. Dezavantajul este c\u0103 aceasta necesit\u0103 o \u00een\u021belegere \u0219i mai aprofundat\u0103 a <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/rotor-dynamics\/\">dinamica rotorului<\/a> \u0219i o analiz\u0103 mai sofisticat\u0103. \u00cen practic\u0103, cele dou\u0103 abord\u0103ri se \u00eembin\u0103 adesea \u2014 informa\u021biile despre moduri ghideaz\u0103 amplasarea planurilor, iar solu\u021bia bazat\u0103 pe coeficien\u021bii de influen\u021b\u0103 rafineaz\u0103 distribu\u021bia maselor.<\/p>\n<h2>9. Cele mai bune practici pentru succes<\/h2>\n<h3>Planning<\/h3>\n<ul>\n<li>Alege\u021bi cu aten\u021bie pozi\u021biile celor N planuri de corec\u021bie \u2014 bine distan\u021bate, accesibile \u0219i, \u00een mod ideal, aliniate cu forma modului rotorului <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/nodal-point\/\">antinodes<\/a>, \u00eentruc\u00e2t o greutate plasat\u0103 la un nod are un efect redus asupra acelui mod.<\/li>\n<li>Alege\u021bi M \u2265 N puncte de m\u0103surare care s\u0103 surprind\u0103 \u00een mod adecvat comportamentul vibra\u021biilor rotorului.<\/li>\n<li>Prevede\u021bi un interval de timp pentru stabilizarea termic\u0103 \u00eentre cicluri.<\/li>\n<li>Preg\u0103ti\u021bi \u00een avans greut\u0103\u021bile de prob\u0103 \u0219i accesoriile de instalare<\/li>\n<\/ul>\n<h3>Execu\u0163ie<\/h3>\n<ul>\n<li>Men\u021bine\u021bi condi\u021biile de func\u021bionare \u2014 tura\u021bie, temperatur\u0103, sarcin\u0103 \u2014 absolut constante pe parcursul tuturor ciclurilor N+2.<\/li>\n<li>Folosi\u021bi greut\u0103\u021bi de testare suficient de mari pentru a produce o reac\u021bie clar\u0103 \u0219i m\u0103surabil\u0103, de obicei o varia\u021bie de 25\u201350 % a vibra\u021biilor.<\/li>\n<li>Efectua\u021bi mai multe m\u0103sur\u0103tori pe fiecare serie \u0219i calcula\u021bi media acestora pentru a elimina zgomotul.<\/li>\n<li>\u00cenregistra\u021bi masa, unghiul \u0219i raza fiec\u0103rei greut\u0103\u021bi de prob\u0103.<\/li>\n<li>Verifica\u021bi calitatea m\u0103sur\u0103rii de faz\u0103, deoarece erorile de faz\u0103 sunt amplificate \u00een solu\u021biile cu matrice de dimensiuni mari.<\/li>\n<\/ul>\n<h3>Analiz\u0103<\/h3>\n<ul>\n<li>Verifica\u021bi matricea coeficien\u021bilor de influen\u021b\u0103 pentru anomalii sau modele nea\u0219teptate<\/li>\n<li>Verifica\u021bi num\u0103rul de condi\u021bie al matricei \u2014 valorile ridicate indic\u0103 o instabilitate numeric\u0103.<\/li>\n<li>Asigura\u021bi-v\u0103 c\u0103 corec\u021biile calculate sunt rezonabile din punct de vedere fizic, adic\u0103 nu sunt nici absurd de mari, nici neglijabil de mici.<\/li>\n<li>V\u0103 recomand\u0103m s\u0103 simula\u021bi rezultatul final preconizat \u00eenainte de a aplica modific\u0103rile.<\/li>\n<\/ul>\n<h2>10. Aplicarea practic\u0103 pe teren \u0219i Balanset-1A<\/h2>\n<p>\u00cen cazul ma\u0219inilor critice, echilibrarea rotorului flexibil se efectueaz\u0103 de cele mai multe ori in situ, la viteza de func\u021bionare, c\u00e2nd rotorul se \u00eendoaie efectiv, \u0219i nu pe o ma\u0219in\u0103 de echilibrare cu vitez\u0103 redus\u0103. Un analizor portabil cu dou\u0103 canale, precum <a href=\"https:\/\/vibromera.eu\/ro\/produs\/balanset-1\/\">Balanset-1A<\/a> furnizeaz\u0103 elementele de baz\u0103 necesare metodei N+2: m\u0103surarea sincronizat\u0103 a amplitudinii \u0219i fazei la fiecare lag\u0103r, calculul automat al coeficien\u021bilor de influen\u021b\u0103 pe baza testelor cu greut\u0103\u021bi de prob\u0103 \u0219i verificarea <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/residual-unbalance\/\">dezechilibru rezidual<\/a> dup\u0103 instalarea corec\u021biilor. \u00cen cazul lucr\u0103rilor cu dou\u0103 planuri, instrumentul execut\u0103 direct solu\u021bia complet\u0103 a coeficien\u021bilor de influen\u021b\u0103; pentru mai multe planuri, m\u0103sur\u0103torile sale pe un singur plan \u0219i pe dou\u0103 planuri servesc drept date disciplinate pe plan, pe care un solver multiplan le combin\u0103. Deoarece opera\u021biunea se desf\u0103\u0219oar\u0103 \u00een propriile lag\u0103re ale ma\u0219inii, r\u0103spunsul \u00eenregistrat include rigiditatea real\u0103 a suportului \u0219i starea termic\u0103 \u00een care func\u021bioneaz\u0103 rotorul.<\/p>\n<h2>11. Integrarea cu alte tehnici<\/h2>\n<p>Metoda N+2 poate fi combinat\u0103 cu abord\u0103ri complementare:<\/p>\n<ul>\n<li><strong>Echilibrare cu trepte de vitez\u0103:<\/strong> repeta\u021bi cele N+2 m\u0103sur\u0103tori la mai multe viteze pentru a optimiza echilibrul pe \u00eentreaga gam\u0103 de func\u021bionare, nu doar la o singur\u0103 vitez\u0103.<\/li>\n<li><strong>Hibrid modal-conven\u021bional:<\/strong> use <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/modal-analysis\/\">analiz\u0103 modal\u0103<\/a> pentru a determina alegerea planului de corec\u021bie, apoi se aplic\u0103 metoda N+2 pentru a stabili greut\u0103\u021bile.<\/li>\n<li><strong>Rafinarea iterativ\u0103:<\/strong> efectua\u021bi echilibrarea complet\u0103 N+2, apoi reutiliza\u021bi un set redus de coeficien\u021bi de influen\u021b\u0103 pentru o evaluare rapid\u0103 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/trim-balance\/\">echilibrare de ajustare<\/a> pe m\u0103sur\u0103 ce condi\u021biile de func\u021bionare se modific\u0103.<\/li>\n<\/ul>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/ro\/glossary\/\">\u2190 \u00cenapoi la indexul principal<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Afla\u021bi despre metoda N+2, o tehnic\u0103 avansat\u0103 de echilibrare pentru rotoare flexibile care necesit\u0103 N plane de corec\u021bie plus dou\u0103 \u00eencerc\u0103ri suplimentare pentru corec\u021bii multiplan precise.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-171","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/171","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/171\/revisions"}],"predecessor-version":[{"id":102187,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/171\/revisions\/102187"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/media?parent=171"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/categories?post=171"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/tags?post=171"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}