{"id":5199,"date":"2024-11-25T01:12:23","date_gmt":"2024-11-25T01:12:23","guid":{"rendered":"https:\/\/vibromera.eu\/?p=5199"},"modified":"2025-12-19T19:20:24","modified_gmt":"2025-12-19T19:20:24","slug":"linear-and-nonlinear-vibrations-balancing-nonlinear-objects","status":"publish","type":"post","link":"https:\/\/vibromera.eu\/ro\/example\/linear-and-nonlinear-vibrations-balancing-nonlinear-objects\/","title":{"rendered":"Echilibrarea obiectelor liniare \u0219i neliniare"},"content":{"rendered":"
\n\n\n \n \n\n \n Obiecte neliniare \u00een echilibrarea rotorului: cauze, simptome \u0219i abordare practic\u0103<\/title>\n <meta name=\"title\" content=\"Nonlinear Objects in Rotor Balancing: Causes, Symptoms, and Practical Approach\" \/>\n \n <meta name=\"keywords\" content=\"rotor balancing, nonlinear object, linear object, influence coefficient, trial weight, resonance, vibration instability, Balanset-1A, vibration diagnostics, field balancing, bearing clearance, looseness, dry friction\" \/>\n <meta name=\"author\" content=\"Vibromera\" \/>\n <meta name=\"robots\" content=\"index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1\" \/>\n <meta name=\"language\" content=\"English\" \/>\n\n <!-- Open Graph -->\n \n \n \n \n\n <!-- Twitter -->\n \n \n \n\n <!-- Fonts -->\n <link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\" \/>\n <link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin \/>\n <link href=\"https:\/\/fonts.googleapis.com\/css2?family=Onest:wght@300;400;500;600;700;800&display=swap\" rel=\"stylesheet\" \/>\n\n <style>\n \/* ========================================\n VIBROMERA ARTICLE STYLES (ISOLATED)\n Prefix: vma-\n All styles scoped to .vma-wrapper\n ======================================== *\/\n .vma-wrapper{\n --vma-primary:#0052cc;\n --vma-primary-dark:#003d99;\n --vma-primary-50:#e6f0ff;\n --vma-gray-50:#f8fafc;\n --vma-gray-100:#f1f5f9;\n --vma-gray-200:#e2e8f0;\n --vma-gray-500:#64748b;\n --vma-gray-700:#334155;\n --vma-gray-800:#1e293b;\n --vma-gray-900:#0f172a;\n --vma-white:#ffffff;\n max-width:1600px;\n margin:0 auto;\n font-family:'Onest',system-ui,-apple-system,sans-serif;\n font-size:18px;\n line-height:1.75;\n color:var(--vma-gray-700);\n -webkit-font-smoothing:antialiased;\n -moz-osx-font-smoothing:grayscale;\n }\n .vma-hero{\n background:linear-gradient(135deg,var(--vma-primary) 0%,var(--vma-primary-dark) 100%);\n color:var(--vma-white);\n padding:56px 20px;\n text-align:center;\n position:relative;\n overflow:hidden;\n }\n .vma-hero::before{\n content:'';\n position:absolute;\n inset:0;\n opacity:.14;\n background-image:\n radial-gradient(circle at 18% 82%, rgba(255,255,255,.35) 0%, transparent 55%),\n radial-gradient(circle at 82% 18%, rgba(255,255,255,.28) 0%, transparent 45%);\n pointer-events:none;\n }\n .vma-hero > *{ position:relative; 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text-align:left; }\n .vma-kbd{\n font-weight:800;\n color:var(--vma-gray-900);\n }\n .vma-formula{\n background:linear-gradient(135deg,var(--vma-gray-50) 0%, var(--vma-primary-50) 100%);\n border:1px solid rgba(0,82,204,.18);\n border-radius:14px;\n padding:14px 16px;\n margin:14px 0;\n font-size:16px;\n color:var(--vma-gray-900);\n overflow:auto;\n white-space:nowrap;\n }\n .vma-qa{\n background:var(--vma-gray-50);\n border:1px solid var(--vma-gray-200);\n border-radius:16px;\n padding:18px 18px;\n margin:18px 0;\n }\n .vma-q{\n margin:0 0 8px 0;\n font-weight:800;\n color:var(--vma-gray-900);\n font-size:18px;\n }\n .vma-a{\n margin:0;\n }\n .vma-anchor{ scroll-margin-top: 16px; }\n @media (max-width: 820px){\n .vma-title{ font-size:30px; }\n }\n <\/style>\n\n <!-- AI \/ Schema.org -->\n \n\n \n<\/head>\n<body>\n <div class=\"vma-wrapper\">\n <header class=\"vma-hero\">\n <h1 class=\"vma-title\">Obiecte neliniare \u00een echilibrarea rotorului<\/h1>\n <p class=\"vma-subtitle\">De ce echilibrarea \u201cnu func\u021bioneaz\u0103\u201d, de ce se modific\u0103 coeficien\u021bii de influen\u021b\u0103 \u0219i cum se procedeaz\u0103 \u00een condi\u021bii reale de teren<\/p>\n <\/header>\n\n <main class=\"vma-content\">\n <div class=\"vma-inner\">\n <nav class=\"vma-toc\" aria-label=\"Cuprins\">\n <div class=\"vma-toc-title\">Cuprins<\/div>\n <ol>\n <li><a href=\"#intro\">Prezentare general\u0103<\/a><\/li>\n <li><a href=\"#linear-nonlinear-vibrations\">Vibra\u021bii liniare \u0219i neliniare<\/a><\/li>\n <li><a href=\"#linear-vs-nonlinear\">Obiecte liniare vs. neliniare<\/a><\/li>\n <li><a href=\"#what-are-linear-objects\">Ce sunt obiectele liniare?<\/a><\/li>\n <li><a href=\"#linearity-graph\">Graficul liniarit\u0103\u021bii<\/a><\/li>\n <li><a href=\"#influence-coefficient\">Coeficientul de influen\u021b\u0103 (IC)<\/a><\/li>\n <li><a href=\"#linear-phase\">Faza de vibra\u021bie \u00een obiecte liniare<\/a><\/li>\n <li><a href=\"#linear-balancing-steps\">Pa\u0219i pentru echilibrarea unui obiect liniar<\/a><\/li>\n <li><a href=\"#serial\">Echilibrare serial\u0103 \u0219i coeficien\u021bi stoca\u021bi<\/a><\/li>\n <li><a href=\"#nonlinear-definition\">Ce este un obiect neliniar?<\/a><\/li>\n <li><a href=\"#nonlinear-signs\">Semne de neliniaritate<\/a><\/li>\n <li><a href=\"#nonlinear-graph\">Graficul neliniarit\u0103\u021bii<\/a><\/li>\n <li><a href=\"#nonlinear-examples\">Exemple de obiecte neliniare<\/a><\/li>\n <li><a href=\"#nonlinear-types\">Tipuri de neliniaritate<\/a><\/li>\n <li><a href=\"#causes\">Cauze frecvente ale neliniarit\u0103\u021bii<\/a><\/li>\n <li><a href=\"#instability\">Instabilitatea vibra\u021biilor<\/a><\/li>\n <li><a href=\"#resonance\">Echilibrarea aproape de rezonan\u021b\u0103<\/a><\/li>\n <li><a href=\"#high-after\">Vibra\u021bii ridicate dup\u0103 o echilibrare \u201creu\u0219it\u0103\u201d<\/a><\/li>\n <li><a href=\"#nonlinear-methods\">Metode de echilibrare pentru obiecte neliniare<\/a><\/li>\n <li><a href=\"#nonlinear-howto-linear-tool\">Cum se echilibreaz\u0103 cu o unealt\u0103 liniar\u0103<\/a><\/li>\n <li><a href=\"#art-science\">Arta \u0219i \u0219tiin\u021ba echilibrului<\/a><\/li>\n <li><a href=\"#measurement\">Repetabilitatea m\u0103sur\u0103torilor<\/a><\/li>\n <li><a href=\"#approach\">Abordare practic\u0103 pentru obiecte neliniare<\/a><\/li>\n <li><a href=\"#reduced-correction\">Tehnica de corec\u021bie cu greutate redus\u0103<\/a><\/li>\n <li><a href=\"#conclusion\">Principiul final<\/a><\/li>\n <li><a href=\"#faq\">\u00centreb\u0103ri \u0219i r\u0103spunsuri<\/a><\/li>\n <\/ol>\n <\/nav>\n\n <section id=\"intro\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Prezentare general\u0103<\/h2>\n <p>\u00cen practic\u0103, echilibrarea rotorului nu se reduce aproape niciodat\u0103 la simpla calculare \u0219i instalare a unei greut\u0103\u021bi de corec\u021bie. Formal, algoritmul este bine cunoscut, iar instrumentul efectueaz\u0103 toate calculele automat, dar rezultatul final depinde mult mai mult de comportamentul obiectului \u00een sine dec\u00e2t de dispozitivul de echilibrare. Acesta este motivul pentru care, \u00een munca real\u0103, apar constant situa\u021bii \u00een care echilibrarea \u201cnu func\u021bioneaz\u0103\u201d, coeficien\u021bii de influen\u021b\u0103 se modific\u0103, vibra\u021biile devin instabile, iar rezultatul nu este repetabil de la o opera\u021biune la alta.<\/p>\n <\/section>\n\n <section id=\"linear-nonlinear-vibrations\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Vibra\u021bii liniare \u0219i neliniare, caracteristicile lor \u0219i metode de echilibrare<\/h2>\n <p>O echilibrare reu\u0219it\u0103 necesit\u0103 \u00een\u021belegerea modului \u00een care un obiect reac\u021bioneaz\u0103 la ad\u0103ugarea sau \u00eendep\u0103rtarea de mas\u0103. \u00cen acest context, conceptele de obiecte liniare \u0219i neliniare joac\u0103 un rol cheie. \u00cen\u021belegerea dac\u0103 un obiect este liniar sau neliniar permite selectarea strategiei corecte de echilibrare \u0219i ajut\u0103 la ob\u021binerea rezultatului dorit.<\/p>\n <p>Obiectele liniare ocup\u0103 un loc special \u00een acest domeniu datorit\u0103 predictibilit\u0103\u021bii \u0219i stabilit\u0103\u021bii lor. Acestea permit utilizarea unor metode simple \u0219i fiabile de diagnosticare \u0219i echilibrare, f\u0103c\u00e2nd studiul lor un pas important \u00een diagnosticarea vibra\u021biilor.<\/p>\n <\/section>\n\n <section id=\"linear-vs-nonlinear\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Obiecte liniare vs. neliniare<\/h2>\n <p>Majoritatea acestor probleme \u00ee\u0219i au r\u0103d\u0103cinile \u00eentr-o distinc\u021bie fundamental\u0103, dar adesea subestimat\u0103, \u00eentre obiectele liniare \u0219i cele neliniare. Din punctul de vedere al echilibr\u0103rii, un obiect liniar este un sistem \u00een care, la o vitez\u0103 de rota\u021bie constant\u0103, amplitudinea vibra\u021biei este propor\u021bional\u0103 cu dezechilibrul, iar faza vibra\u021biei urmeaz\u0103 pozi\u021bia unghiular\u0103 a masei dezechilibrate \u00eentr-un mod strict previzibil. \u00cen aceste condi\u021bii, coeficientul de influen\u021b\u0103 este o valoare constant\u0103. To\u021bi algoritmii standard de echilibrare dinamic\u0103, inclusiv cei implementa\u021bi \u00een Balanset-1A, sunt concepu\u021bi tocmai pentru astfel de obiecte.<\/p>\n <p>Pentru un obiect liniar, procesul de echilibrare este previzibil \u0219i stabil. Instalarea unei greut\u0103\u021bi de prob\u0103 produce o modificare propor\u021bional\u0103 a amplitudinii \u0219i fazei vibra\u021biei. Pornirile repetate dau acela\u0219i vector de vibra\u021bie, iar greutatea de corec\u021bie calculat\u0103 r\u0103m\u00e2ne valabil\u0103. Astfel de obiecte sunt potrivite at\u00e2t pentru echilibrarea unic\u0103, c\u00e2t \u0219i pentru echilibrarea serial\u0103 folosind coeficien\u021bi de influen\u021b\u0103 stoca\u021bi.<\/p>\n <p>Un obiect neliniar se comport\u0103 \u00eentr-un mod fundamental diferit. \u00cens\u0103\u0219i baza calculului de echilibrare este \u00eenc\u0103lcat\u0103. Amplitudinea vibra\u021biei nu mai este propor\u021bional\u0103 cu dezechilibrul, faza devine instabil\u0103, iar coeficientul de influen\u021b\u0103 se modific\u0103 \u00een func\u021bie de masa greut\u0103\u021bii de prob\u0103, modul de func\u021bionare sau chiar de timp. \u00cen practic\u0103, acest lucru apare ca un comportament haotic al vectorului de vibra\u021bie: dup\u0103 instalarea unei greut\u0103\u021bi de prob\u0103, schimbarea vibra\u021biei poate fi prea mic\u0103, excesiv\u0103 sau pur \u0219i simplu irepetabil\u0103.<\/p>\n <\/section>\n\n <section id=\"what-are-linear-objects\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Ce sunt obiectele liniare?<\/h2>\n <p>Un obiect liniar este un sistem \u00een care vibra\u021bia este direct propor\u021bional\u0103 cu magnitudinea dezechilibrului.<\/p>\n <p>Un obiect liniar, \u00een contextul echilibr\u0103rii, este un model idealizat caracterizat printr-o rela\u021bie direct propor\u021bional\u0103 \u00eentre magnitudinea dezechilibrului (masa dezechilibrat\u0103) \u0219i amplitudinea vibra\u021biei. Aceasta \u00eenseamn\u0103 c\u0103, dac\u0103 dezechilibrul este dublat, amplitudinea vibra\u021biei se va dubla \u0219i ea, cu condi\u021bia ca viteza de rota\u021bie a rotorului s\u0103 r\u0103m\u00e2n\u0103 constant\u0103. \u00cen schimb, reducerea dezechilibrului va reduce propor\u021bional vibra\u021biile.<\/p>\n <p>Spre deosebire de sistemele neliniare, \u00een care comportamentul unui obiect poate varia \u00een func\u021bie de mul\u021bi factori, obiectele liniare permit un nivel ridicat de precizie cu un efort minim.<\/p>\n <p>\u00cen plus, ele servesc drept baz\u0103 pentru instruirea \u0219i exersarea operatorilor de echilibrare. \u00cen\u021belegerea principiilor obiectelor liniare ajut\u0103 la dezvoltarea abilit\u0103\u021bilor care pot fi aplicate ulterior sistemelor mai complexe.<\/p>\n <\/section>\n\n <section id=\"linearity-graph\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Reprezentarea grafic\u0103 a liniarit\u0103\u021bii<\/h2>\n <p>Imagina\u021bi-v\u0103 un grafic \u00een care axa orizontal\u0103 reprezint\u0103 magnitudinea masei dezechilibrate (dezechilibrului), iar axa vertical\u0103 reprezint\u0103 amplitudinea vibra\u021biei. Pentru un obiect liniar, acest grafic va fi o linie dreapt\u0103 care trece prin origine (punctul \u00een care at\u00e2t magnitudinea dezechilibrului, c\u00e2t \u0219i amplitudinea vibra\u021biei sunt zero). Panta acestei linii caracterizeaz\u0103 sensibilitatea obiectului la dezechilibru: cu c\u00e2t panta este mai abrupt\u0103, cu at\u00e2t vibra\u021biile sunt mai mari pentru acela\u0219i dezechilibru.<\/p>\n\n <div class=\"vma-image\">\n <a href=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2024\/11\/output-1.png\" class=\"vma-img-link\">\n <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2024\/11\/output-1-1024x804.png\" alt=\"Graficul 1: Rela\u021bia dintre amplitudinea vibra\u021biei (\u00b5m) \u0219i masa dezechilibrat\u0103 (g)\" width=\"750\" height=\"589\" \/>\n <\/a>\n <p class=\"vma-caption\"><strong>Graficul 1: Rela\u021bia dintre amplitudinea vibra\u021biei (\u00b5m) \u0219i masa dezechilibrat\u0103 (g)<\/strong><\/p>\n <\/div>\n\n <p>Graficul 1 ilustreaz\u0103 rela\u021bia dintre amplitudinea vibra\u021biei (\u00b5m) a unui obiect de echilibrare liniar \u0219i masa dezechilibrat\u0103 (g) a rotorului. Coeficientul de propor\u021bionalitate este de 0,5 \u00b5m\/g. Simpla \u00eemp\u0103r\u021bire a 300 la 600 d\u0103 0,5 \u00b5m\/g. Pentru o mas\u0103 dezechilibrat\u0103 de 800 g (UM=800 g), vibra\u021bia va fi de 800 g * 0,5 \u00b5m\/g = 400 \u00b5m. Re\u021bine\u021bi c\u0103 acest lucru se aplic\u0103 la o vitez\u0103 constant\u0103 a rotorului. La o vitez\u0103 de rota\u021bie diferit\u0103, coeficientul va fi diferit.<\/p>\n <p>Acest coeficient de propor\u021bionalitate se nume\u0219te coeficient de influen\u021b\u0103 (coeficient de sensibilitate) \u0219i are o dimensiune de \u00b5m\/g sau, \u00een cazurile care implic\u0103 dezechilibru, \u00b5m\/(g*mm), unde (g*mm) este unitatea de dezechilibru. Cunosc\u00e2nd coeficientul de influen\u021b\u0103 (IC), se poate rezolva \u0219i problema invers\u0103, \u0219i anume, determinarea masei dezechilibrate (UM) pe baza m\u0103rimii vibra\u021biei. Pentru a face acest lucru, \u00eemp\u0103r\u021bi\u021bi amplitudinea vibra\u021biei la IC.<\/p>\n <p>De exemplu, dac\u0103 vibra\u021bia m\u0103surat\u0103 este de 300 \u00b5m \u0219i coeficientul cunoscut este IC=0,5 \u00b5m\/g, \u00eemp\u0103r\u021bi\u021bi 300 la 0,5 pentru a ob\u021bine 600 g (UM=600 g).<\/p>\n <\/section>\n\n <section id=\"influence-coefficient\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Coeficientul de influen\u021b\u0103 (IC): Parametrul cheie al obiectelor liniare<\/h2>\n <p>O caracteristic\u0103 critic\u0103 a unui obiect liniar este coeficientul de influen\u021b\u0103 (IC). Acesta este numeric egal cu tangenta unghiului de pant\u0103 al liniei de pe graficul vibra\u021biei \u00een func\u021bie de dezechilibru \u0219i indic\u0103 cu c\u00e2t se modific\u0103 amplitudinea vibra\u021biei (\u00een microni, \u00b5m) atunci c\u00e2nd o unitate de mas\u0103 (\u00een grame, g) este ad\u0103ugat\u0103 \u00eentr-un plan de corec\u021bie specific la o anumit\u0103 vitez\u0103 a rotorului. Cu alte cuvinte, IC este o m\u0103sur\u0103 a sensibilit\u0103\u021bii obiectului la dezechilibru. Unitatea sa de m\u0103sur\u0103 este \u00b5m\/g sau, atunci c\u00e2nd dezechilibrul este exprimat ca produsul dintre mas\u0103 \u0219i raz\u0103, \u00b5m\/(g*mm).<\/p>\n <p>CI este, \u00een esen\u021b\u0103, caracteristica \"pa\u0219aportului\" unui obiect liniar, permi\u021b\u00e2nd prezicerea comportamentului s\u0103u atunci c\u00e2nd se adaug\u0103 sau se \u00eendep\u0103rteaz\u0103 mas\u0103. Cunoa\u0219terea CI permite rezolvarea at\u00e2t a problemei directe \u2013 determinarea magnitudinii vibra\u021biei pentru un dezechilibru dat \u2013 c\u00e2t \u0219i a problemei inverse \u2013 calcularea magnitudinii dezechilibrului din vibra\u021biile m\u0103surate.<\/p>\n\n <h3 class=\"vma-h3\">Problem\u0103 direct\u0103:<\/h3>\n <div class=\"vma-formula\">Amplitudinea vibra\u021biei (\u00b5m) = IC (\u00b5m\/g) * Masa dezechilibrat\u0103 (g)<\/div>\n\n <h3 class=\"vma-h3\">Problema invers\u0103:<\/h3>\n <div class=\"vma-formula\">Mas\u0103 dezechilibrat\u0103 (g) = Amplitudinea vibra\u021biei (\u00b5m) \/ IC (\u00b5m\/g)<\/div>\n <\/section>\n\n <section id=\"linear-phase\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Faza de vibra\u021bie \u00een obiectele liniare<\/h2>\n <p>Pe l\u00e2ng\u0103 amplitudine, vibra\u021bia este caracterizat\u0103 \u0219i de faza sa, care indic\u0103 pozi\u021bia rotorului \u00een momentul abaterii maxime de la pozi\u021bia sa de echilibru. Pentru un obiect liniar, faza vibra\u021biei este, de asemenea, previzibil\u0103. Este suma a dou\u0103 unghiuri:<\/p>\n <ol>\n <li>Unghiul care determin\u0103 pozi\u021bia masei totale dezechilibrate a rotorului. Acest unghi indic\u0103 direc\u021bia \u00een care este concentrat dezechilibrul primar.<\/li>\n <li>Argumentul coeficientului de influen\u021b\u0103. Acesta este un unghi constant care caracterizeaz\u0103 propriet\u0103\u021bile dinamice ale obiectului \u0219i nu depinde de magnitudinea sau unghiul instala\u021biei de mas\u0103 dezechilibrat\u0103.<\/li>\n <\/ol>\n <p>Astfel, cunosc\u00e2nd argumentul IC \u0219i m\u0103sur\u00e2nd faza de vibra\u021bie, este posibil s\u0103 se determine unghiul instala\u021biei de mas\u0103 dezechilibrate. Acest lucru permite nu numai calcularea m\u0103rimii masei corective, ci \u0219i plasarea precis\u0103 a acesteia pe rotor pentru a ob\u021bine echilibrul optim.<\/p>\n <\/section>\n\n <section id=\"linear-balancing-steps\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Echilibrarea obiectelor liniare<\/h2>\n <p>Este important de men\u021bionat c\u0103 pentru un obiect liniar, coeficientul de influen\u021b\u0103 (IC) determinat astfel nu depinde de m\u0103rimea sau unghiul instala\u021biei de mas\u0103 de prob\u0103, nici de vibra\u021bia ini\u021bial\u0103. Aceasta este o caracteristic\u0103 cheie a liniarit\u0103\u021bii. Dac\u0103 IC r\u0103m\u00e2ne neschimbat atunci c\u00e2nd parametrii de mas\u0103 de \u00eencercare sau vibra\u021bia ini\u021bial\u0103 sunt modifica\u021bi, se poate afirma cu \u00eencredere c\u0103 obiectul se comport\u0103 liniar \u00een intervalul considerat de dezechilibre.<\/p>\n\n <h3 class=\"vma-h3\">Pa\u0219i pentru echilibrarea unui obiect liniar<\/h3>\n <ol>\n <li><strong>M\u0103surarea vibra\u021biei ini\u021biale:<\/strong> Primul pas este m\u0103surarea vibra\u021biei \u00een starea ini\u021bial\u0103. Se determin\u0103 amplitudinea \u0219i unghiul de vibra\u021bie, care indic\u0103 direc\u021bia de dezechilibru.<\/li>\n <li><strong>Instalarea unei mase de prob\u0103:<\/strong> O mas\u0103 de greutate cunoscut\u0103 este instalat\u0103 pe rotor. Acest lucru ajut\u0103 la \u00een\u021belegerea modului \u00een care obiectul reac\u021bioneaz\u0103 la sarcini suplimentare \u0219i permite calcularea parametrilor de vibra\u021bie.<\/li>\n <li><strong>Rem\u0103surarea vibra\u021biei:<\/strong> Dup\u0103 instalarea masei de prob\u0103, se m\u0103soar\u0103 noi parametri de vibra\u021bie. Compar\u00e2ndu-le cu valorile ini\u021biale, este posibil s\u0103 se determine modul \u00een care masa afecteaz\u0103 sistemul.<\/li>\n <li><strong>Calcularea masei corectoare:<\/strong> Pe baza datelor de m\u0103surare, se determin\u0103 masa \u0219i unghiul de instalare al greut\u0103\u021bii corectoare. Aceast\u0103 greutate este plasat\u0103 pe rotor pentru a elimina dezechilibrul.<\/li>\n <li><strong>Verificare final\u0103:<\/strong> Dup\u0103 instalarea greut\u0103\u021bii corective, vibra\u021bia ar trebui redus\u0103 semnificativ. Dac\u0103 vibra\u021bia rezidual\u0103 dep\u0103\u0219e\u0219te \u00een continuare nivelul acceptabil, procedura poate fi repetat\u0103.<\/li>\n <\/ol>\n\n <div class=\"vma-note\">\n <p><span class=\"vma-kbd\">Not\u0103:<\/span> Obiectele liniare servesc drept modele ideale pentru studierea \u0219i aplicarea practic\u0103 a metodelor de echilibrare. Propriet\u0103\u021bile lor permit inginerilor \u0219i diagnosticienilor s\u0103 se concentreze pe dezvoltarea abilit\u0103\u021bilor de baz\u0103 \u0219i pe \u00een\u021belegerea principiilor fundamentale ale lucrului cu sistemele cu rotoare. De\u0219i aplicarea lor \u00een practica real\u0103 este limitat\u0103, studiul obiectelor liniare r\u0103m\u00e2ne un pas important \u00een avansarea diagnostic\u0103rii \u0219i echilibr\u0103rii vibra\u021biilor.<\/p>\n <\/div>\n\n <div class=\"vma-note\">\n <p><span class=\"vma-kbd\">Cod scurt substituent:<\/span> \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 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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\/posts\/5199?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 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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\/posts\/5199?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\" 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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\/posts\/5199?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\/posts\/5199?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: &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\/posts\/5199?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\/posts\/5199?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: &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\/posts\/5199?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\" 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\/posts\/5199?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=\"Adaug\u0103 \u00een co\u0219: &lbquo;Magnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201eMagnetic Stand Insize-60-kgf\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_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\/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\/posts\/5199?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\/posts\/5199?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: &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 "Balanset-1A" 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 "Balanset-1A" 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\/posts\/5199?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 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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<\/p>\n <\/div>\n <\/section>\n\n <section id=\"serial\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Echilibrare serial\u0103 \u0219i coeficien\u021bi stoca\u021bi<\/h2>\n <p>Echilibrarea serial\u0103 merit\u0103 o aten\u021bie special\u0103. Aceasta poate cre\u0219te semnificativ productivitatea, dar numai atunci c\u00e2nd este aplicat\u0103 la obiecte liniare, stabile la vibra\u021bii. \u00cen astfel de cazuri, coeficien\u021bii de influen\u021b\u0103 ob\u021binu\u021bi pe primul rotor pot fi reutiliza\u021bi pentru rotoare identice ulterioare. Cu toate acestea, imediat ce rigiditatea suportului, viteza de rota\u021bie sau starea lag\u0103rului se modific\u0103, repetabilitatea se pierde \u0219i abordarea serial\u0103 nu mai func\u021bioneaz\u0103.<\/p>\n <\/section>\n\n <section id=\"nonlinear-definition\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Obiecte neliniare: c\u00e2nd teoria diverge de la practic\u0103<\/h2>\n <h3 class=\"vma-h3\">Ce este un obiect neliniar?<\/h3>\n <p>Un obiect neliniar este un sistem \u00een care amplitudinea vibra\u021biei nu este propor\u021bional\u0103 cu magnitudinea dezechilibrului. Spre deosebire de obiectele liniare, unde rela\u021bia dintre vibra\u021bie \u0219i masa de dezechilibru este reprezentat\u0103 de o linie dreapt\u0103, \u00een sistemele neliniare aceast\u0103 rela\u021bie poate urma traiectorii complexe.<\/p>\n <p>\u00cen lumea real\u0103, nu toate obiectele se comport\u0103 liniar. Obiectele neliniare prezint\u0103 o rela\u021bie \u00eentre dezechilibru \u0219i vibra\u021bie care nu este direct propor\u021bional\u0103. Aceasta \u00eenseamn\u0103 c\u0103 coeficientul de influen\u021b\u0103 nu este constant \u0219i poate varia \u00een func\u021bie de mai mul\u021bi factori, cum ar fi:<\/p>\n <ul>\n <li><strong>M\u0103rimea dezechilibrului:<\/strong> Cre\u0219terea dezechilibrului poate modifica rigiditatea suporturilor rotorului, duc\u00e2nd la modific\u0103ri neliniare ale vibra\u021biilor.<\/li>\n <li><strong>Viteza de rota\u021bie:<\/strong> Diferite fenomene de rezonan\u021b\u0103 pot fi excitate la viteze de rota\u021bie diferite, rezult\u00e2nd, de asemenea, un comportament neliniar.<\/li>\n <li><strong>Prezen\u021ba jocurilor \u0219i golurilor:<\/strong> Jocurile \u0219i golurile din rulmen\u021bi \u0219i alte conexiuni pot provoca schimb\u0103ri bru\u0219te ale vibra\u021biilor \u00een anumite condi\u021bii.<\/li>\n <li><strong>Temperatur\u0103:<\/strong> Schimb\u0103rile de temperatur\u0103 pot afecta propriet\u0103\u021bile materialului \u0219i, \u00een consecin\u021b\u0103, caracteristicile de vibra\u021bie ale obiectului.<\/li>\n <li><strong>Sarcini externe:<\/strong> Sarcinile externe care ac\u021bioneaz\u0103 asupra rotorului pot modifica caracteristicile sale dinamice \u0219i pot duce la un comportament neliniar.<\/li>\n <\/ul>\n\n <h3 class=\"vma-h3\">De ce sunt obiectele neliniare provocatoare?<\/h3>\n <p>Neliniaritatea introduce multe variabile \u00een procesul de echilibrare. Lucrul de succes cu obiecte neliniare necesit\u0103 mai multe m\u0103sur\u0103tori \u0219i analize mai complexe. De exemplu, metodele standard aplicabile obiectelor liniare nu produc \u00eentotdeauna rezultate precise pentru sistemele neliniare. Acest lucru necesit\u0103 o \u00een\u021belegere mai profund\u0103 a fizicii procesului \u0219i utilizarea metodelor de diagnosticare specializate.<\/p>\n <\/section>\n\n <section id=\"nonlinear-signs\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Semne de neliniaritate<\/h2>\n <p>Un obiect neliniar poate fi identificat prin urm\u0103toarele semne:<\/p>\n <ul>\n <li><strong>Modific\u0103ri nepropor\u021bionale ale vibra\u021biilor:<\/strong> Pe m\u0103sur\u0103 ce dezechilibrul cre\u0219te, vibra\u021bia poate cre\u0219te mai rapid sau mai lent dec\u00e2t se a\u0219tepta pentru un obiect liniar.<\/li>\n <li><strong>Schimbarea de faz\u0103 \u00een vibra\u021bie:<\/strong> Faza de vibra\u021bie se poate schimba \u00een mod imprevizibil cu varia\u021bii ale dezechilibrului sau ale vitezei de rota\u021bie.<\/li>\n <li><strong>Prezen\u021ba armonicilor \u0219i subarmonicilor:<\/strong> Spectrul de vibra\u021bii poate prezenta armonici mai mari (multiplii frecven\u021bei de rota\u021bie) \u0219i subarmonici (frac\u021bii ale frecven\u021bei de rota\u021bie), indic\u00e2nd efecte neliniare.<\/li>\n <li><strong>Histerezis:<\/strong> Amplitudinea vibra\u021biei poate depinde nu numai de valoarea actual\u0103 a dezechilibrului, ci \u0219i de istoria acestuia. De exemplu, atunci c\u00e2nd dezechilibrul este crescut \u0219i apoi scade \u00eenapoi la valoarea sa ini\u021bial\u0103, amplitudinea vibra\u021biei poate s\u0103 nu revin\u0103 la nivelul ini\u021bial.<\/li>\n <\/ul>\n <p>Neliniaritatea introduce multe variabile \u00een procesul de echilibrare. Pentru o func\u021bionare cu succes sunt necesare mai multe m\u0103sur\u0103tori \u0219i analize complexe. De exemplu, metodele standard aplicabile obiectelor liniare nu produc \u00eentotdeauna rezultate precise pentru sistemele neliniare. Acest lucru necesit\u0103 o \u00een\u021belegere mai profund\u0103 a fizicii procesului \u0219i utilizarea metodelor de diagnosticare specializate.<\/p>\n <\/section>\n\n <section id=\"nonlinear-graph\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Reprezentarea grafic\u0103 a neliniarit\u0103\u021bii<\/h2>\n <p>Pe un grafic al vibra\u021biei versus dezechilibru, neliniaritatea este evident\u0103 \u00een abaterile de la o linie dreapt\u0103. Graficul poate prezenta inflexiuni, curbur\u0103, bucle de histerezis \u0219i alte caracteristici care indic\u0103 o rela\u021bie complex\u0103 \u00eentre dezechilibru \u0219i vibra\u021bie.<\/p>\n\n <div class=\"vma-image\">\n <a href=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2024\/11\/output-3.png\" class=\"vma-img-link\">\n <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2024\/11\/output-3-1024x816.png\" alt=\"Graficul 2. Obiect neliniar\" width=\"750\" height=\"598\" \/>\n <\/a>\n <p class=\"vma-caption\"><strong>Graficul 2. Obiect neliniar<\/strong><\/p>\n <p class=\"vma-caption\"><strong>50 g; 40 \u03bcm (galben), 100 g; 54,7 \u03bcm (albastru).<\/strong><\/p>\n <\/div>\n\n <p>Acest obiect prezint\u0103 dou\u0103 segmente, dou\u0103 linii drepte. Pentru dezechilibre mai mici de 50 de grame, graficul reflect\u0103 propriet\u0103\u021bile unui obiect liniar, men\u021bin\u00e2nd propor\u021bionalitatea \u00eentre dezechilibrul \u00een grame \u0219i amplitudinea vibra\u021biei \u00een microni. Pentru dezechilibre mai mari de 50 de grame, cre\u0219terea amplitudinii vibra\u021biei \u00eencetine\u0219te.<\/p>\n <\/section>\n\n <section id=\"nonlinear-examples\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Exemple de obiecte neliniare<\/h2>\n <p>Exemple de obiecte neliniare \u00een contextul echilibr\u0103rii includ:<\/p>\n <ul>\n <li><strong>Rotoare cu fisuri:<\/strong> Fisurile din rotor pot duce la modific\u0103ri neliniare ale rigidit\u0103\u021bii \u0219i, ca urmare, la o rela\u021bie neliniar\u0103 \u00eentre vibra\u021bie \u0219i dezechilibru.<\/li>\n <li><strong>Rotoare cu jocuri \u00een rulmen\u021bi:<\/strong> Jocurile din rulmen\u021bi pot provoca schimb\u0103ri bru\u0219te ale vibra\u021biilor \u00een anumite condi\u021bii.<\/li>\n <li><strong>Rotoare cu elemente elastice neliniare:<\/strong> Unele elemente elastice, cum ar fi amortizoarele de cauciuc, pot prezenta caracteristici neliniare, afect\u00e2nd dinamica rotorului.<\/li>\n <\/ul>\n <\/section>\n\n <section id=\"nonlinear-types\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Tipuri de neliniaritate<\/h2>\n <h3 class=\"vma-h3\">1. Neliniaritate Soft-Stiff<\/h3>\n <p>\u00cen astfel de sisteme se observ\u0103 dou\u0103 segmente: moale \u0219i rigid. \u00cen segmentul moale, comportamentul seam\u0103n\u0103 cu liniaritatea, unde amplitudinea vibra\u021biei cre\u0219te propor\u021bional cu masa de dezechilibru. Cu toate acestea, dup\u0103 un anumit prag (punct de \u00eentrerupere), sistemul trece la un mod rigid, \u00een care cre\u0219terea amplitudinii \u00eencetine\u0219te.<\/p>\n <h3 class=\"vma-h3\">2. Neliniaritate elastic\u0103<\/h3>\n <p>Modific\u0103rile \u00een rigiditatea suporturilor sau a contactelor din cadrul sistemului fac rela\u021bia vibra\u021bie-dezechilibru complex\u0103. De exemplu, vibra\u021bia poate cre\u0219te sau sc\u0103dea brusc atunci c\u00e2nd se dep\u0103\u0219esc anumite praguri de sarcin\u0103.<\/p>\n <h3 class=\"vma-h3\">3. Neliniaritate indus\u0103 de frecare<\/h3>\n <p>\u00cen sistemele cu frecare semnificativ\u0103 (de exemplu, \u00een rulmen\u021bi), amplitudinea vibra\u021biei poate fi imprevizibil\u0103. Frecarea poate reduce vibra\u021bia \u00eentr-un interval de vitez\u0103 \u0219i o poate amplifica \u00een altul.<\/p>\n <\/section>\n\n <section id=\"causes\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Cauze frecvente ale neliniarit\u0103\u021bii<\/h2>\n <p>Cele mai frecvente cauze ale neliniarit\u0103\u021bii sunt jocurile crescute ale lag\u0103relor, uzura lag\u0103relor, frecarea uscat\u0103, suporturile sl\u0103bite, fisurile din structur\u0103 \u0219i func\u021bionarea \u00een apropierea frecven\u021belor de rezonan\u021b\u0103. Adesea, obiectul prezint\u0103 a\u0219a-numita neliniaritate moale-dur\u0103. La niveluri mici de dezechilibru, sistemul se comport\u0103 aproape liniar, dar pe m\u0103sur\u0103 ce vibra\u021biile cresc, devin implicate elemente mai rigide ale suporturilor sau carcasei. \u00cen astfel de cazuri, echilibrarea este posibil\u0103 doar \u00eentr-un interval de func\u021bionare \u00eengust \u0219i nu ofer\u0103 rezultate stabile pe termen lung.<\/p>\n <\/section>\n\n <section id=\"instability\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Instabilitatea vibra\u021biilor<\/h2>\n <p>O alt\u0103 problem\u0103 serioas\u0103 este instabilitatea vibra\u021biilor. Chiar \u0219i un obiect formal liniar poate prezenta modific\u0103ri de amplitudine \u0219i faz\u0103 \u00een timp. Acest lucru este cauzat de efecte termice, modific\u0103ri ale v\u00e2scozit\u0103\u021bii lubrifiantului, expansiunea termic\u0103 \u0219i frecarea instabil\u0103 \u00een suporturi. Drept urmare, m\u0103sur\u0103torile efectuate la doar c\u00e2teva minute distan\u021b\u0103 pot produce vectori de vibra\u021bii diferi\u021bi. \u00cen aceste condi\u021bii, compararea semnificativ\u0103 a m\u0103sur\u0103torilor devine imposibil\u0103, iar calculul de echilibrare \u00ee\u0219i pierde fiabilitatea.<\/p>\n <\/section>\n\n <section id=\"resonance\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Echilibrarea aproape de rezonan\u021b\u0103<\/h2>\n <p>Echilibrarea \u00een apropierea rezonan\u021bei este deosebit de problematic\u0103. Atunci c\u00e2nd frecven\u021ba de rota\u021bie coincide cu sau este aproape de o frecven\u021b\u0103 natural\u0103 a sistemului, chiar \u0219i un mic dezechilibru provoac\u0103 o cre\u0219tere brusc\u0103 a vibra\u021biilor. Faza de vibra\u021bie devine extrem de sensibil\u0103 la varia\u021bii mici de vitez\u0103. Obiectul intr\u0103 efectiv \u00eentr-un regim neliniar, iar echilibrarea \u00een aceast\u0103 zon\u0103 \u00ee\u0219i pierde sensul fizic. \u00cen astfel de cazuri, viteza de func\u021bionare sau structura mecanic\u0103 trebuie modificate \u00eenainte de a putea lua \u00een considerare echilibrarea.<\/p>\n <\/section>\n\n <section id=\"high-after\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Vibra\u021bii ridicate dup\u0103 o echilibrare \u201creu\u0219it\u0103\u201d<\/h2>\n <p>\u00cen practic\u0103, este frecvent \u00eent\u00e2lnirea unor situa\u021bii \u00een care, dup\u0103 o procedur\u0103 de echilibrare formal reu\u0219it\u0103, nivelul general al vibra\u021biilor r\u0103m\u00e2ne ridicat. Acest lucru nu indic\u0103 o eroare a instrumentului sau a operatorului. Echilibrarea elimin\u0103 doar dezechilibrul de mas\u0103. Dac\u0103 vibra\u021biile sunt cauzate de defecte ale funda\u021biei, elemente de fixare sl\u0103bite, nealiniere sau rezonan\u021b\u0103, greut\u0103\u021bile de corec\u021bie nu vor rezolva problema. \u00cen aceste cazuri, analiza distribu\u021biei spa\u021biale a vibra\u021biilor pe ma\u0219in\u0103 \u0219i pe funda\u021bia acesteia ajut\u0103 la identificarea cauzei reale.<\/p>\n <\/section>\n\n <section id=\"nonlinear-methods\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Echilibrarea obiectelor neliniare: o sarcin\u0103 complex\u0103 cu solu\u021bii neconven\u021bionale<\/h2>\n <p>Echilibrarea obiectelor neliniare este o sarcin\u0103 provocatoare care necesit\u0103 metode \u0219i abord\u0103ri specializate. Metoda standard de mas\u0103 de prob\u0103, dezvoltat\u0103 pentru obiecte liniare, poate da rezultate eronate sau poate fi complet inaplicabil\u0103.<\/p>\n\n <h3 class=\"vma-h3\">Metode de echilibrare pentru obiecte neliniare<\/h3>\n <ul>\n <li><strong>Echilibrare pas cu pas:<\/strong> Aceast\u0103 metod\u0103 implic\u0103 reducerea treptat\u0103 a dezechilibrului prin instalarea unor greut\u0103\u021bi corective \u00een fiecare etap\u0103. Dup\u0103 fiecare etap\u0103, se efectueaz\u0103 m\u0103sur\u0103tori ale vibra\u021biilor \u0219i se determin\u0103 o nou\u0103 greutate corectiv\u0103 pe baza st\u0103rii actuale a obiectului. Aceast\u0103 abordare ia \u00een considerare modific\u0103rile coeficientului de influen\u021b\u0103 \u00een timpul procesului de echilibrare.<\/li>\n <li><strong>Echilibrare la mai multe viteze:<\/strong> Aceast\u0103 metod\u0103 abordeaz\u0103 efectele fenomenelor de rezonan\u021b\u0103 la diferite viteze de rota\u021bie. Echilibrarea se realizeaz\u0103 la mai multe viteze aproape de rezonan\u021b\u0103, permi\u021b\u00e2nd o reducere mai uniform\u0103 a vibra\u021biilor pe \u00eentregul interval de vitez\u0103 de func\u021bionare.<\/li>\n <li><strong>Folosind modele matematice:<\/strong> Pentru obiecte neliniare complexe, pot fi folosite modele matematice care descriu dinamica rotorului \u00een timp ce \u021bin cont de efectele neliniare. Aceste modele ajut\u0103 la prezicerea comportamentului obiectului \u00een diferite condi\u021bii \u0219i la determinarea parametrilor optimi de echilibrare.<\/li>\n <\/ul>\n\n <p>Experien\u021ba \u0219i intui\u021bia unui specialist joac\u0103 un rol crucial \u00een echilibrarea obiectelor neliniare. Un echilibrist experimentat poate recunoa\u0219te semnele de neliniaritate, poate selecta o metod\u0103 adecvat\u0103 \u0219i o poate adapta situa\u021biei specifice. Analizarea spectrelor de vibra\u021bii, observarea modific\u0103rilor vibra\u021biilor pe m\u0103sur\u0103 ce parametrii de func\u021bionare ai obiectului variaz\u0103 \u0219i luarea \u00een considerare a caracteristicilor de proiectare ale rotorului ajut\u0103 la luarea deciziilor corecte \u0219i la ob\u021binerea rezultatelor dorite.<\/p>\n <\/section>\n\n <section id=\"nonlinear-howto-linear-tool\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Cum s\u0103 echilibra\u021bi obiecte neliniare folosind un instrument conceput pentru obiecte liniare<\/h2>\n <p>Aceasta este o intrebare buna. Metoda mea personala de echilibrare a unor astfel de obiecte incepe cu repararea mecanismului: sudand fisurile, inlocuind rulmentii, stringand suruburile, verificand ancorele sau izolatorii de vibratii si asigurand ca rotorul nu se freaca de elementele structurale stationare.<\/p>\n <p>In continuare, identific frecventele de rezonanta, deoarece este imposibil sa echilibrezi un rotor la viteze apropiate de rezonanta. Pentru a face acest lucru, folosesc metoda impactului pentru determinarea rezonantei sau un grafic de ralentire a rotorului.<\/p>\n <p>Apoi, determin pozi\u021bia senzorului pe mecanism: vertical\u0103, orizontal\u0103 sau \u00eenclinat\u0103.<\/p>\n <p>Dupa incercari, dispozitivul indica unghiul si greutatea sarcinilor corective. Injumatatescc greutatea sarcinii corective, dar folosesc unghiurile sugerate de dispozitiv pentru plasarea rotorului. Daca vibratia reziduala dupa corectie depaseste in continuare nivelul acceptabil, efectuez o alta functionare a rotorului. Desigur, acest lucru necesita mai mult timp, dar rezultatele sunt uneori inspiratoare.<\/p>\n <\/section>\n\n <section id=\"art-science\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Arta \u0219i \u0219tiin\u021ba echilibr\u0103rii echipamentelor rotative<\/h2>\n <p>Echilibrarea echipamentelor rotative este un proces complex care combin\u0103 elemente de \u0219tiin\u021b\u0103 \u0219i art\u0103. Pentru obiectele liniare, echilibrarea implic\u0103 calcule relativ simple \u0219i metode standard. Cu toate acestea, lucrul cu obiecte neliniare necesit\u0103 o \u00een\u021belegere profund\u0103 a dinamicii rotorului, capacitatea de a analiza semnalele de vibra\u021bie \u0219i abilit\u0103\u021bile de a alege cele mai eficiente strategii de echilibrare.<\/p>\n <p>Experien\u021ba, intui\u021bia \u0219i \u00eembun\u0103t\u0103\u021birea continu\u0103 a abilit\u0103\u021bilor sunt ceea ce fac din echilibrist un adev\u0103rat maestru al me\u0219te\u0219ugului s\u0103u. La urma urmei, calitatea echilibr\u0103rii nu numai c\u0103 determin\u0103 eficien\u021ba \u0219i fiabilitatea func\u021bion\u0103rii echipamentelor, ci asigur\u0103 \u0219i siguran\u021ba oamenilor.<\/p>\n <p> <\/p>\n <\/section>\n\n <section id=\"measurement\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Repetabilitatea m\u0103sur\u0103torilor<\/h2>\n <p>Problemele legate de m\u0103surare joac\u0103, de asemenea, un rol major. Instalarea incorect\u0103 a senzorilor de vibra\u021bii, modific\u0103rile punctelor de m\u0103surare sau orientarea necorespunz\u0103toare a senzorilor afecteaz\u0103 direct at\u00e2t amplitudinea, c\u00e2t \u0219i faza. Pentru echilibrare, nu este suficient s\u0103 se m\u0103soare vibra\u021biile; repetabilitatea \u0219i stabilitatea m\u0103sur\u0103torilor sunt esen\u021biale. De aceea, \u00een practic\u0103, loca\u021biile \u0219i orient\u0103rile de montare a senzorilor trebuie controlate strict.<\/p>\n <\/section>\n\n <section id=\"approach\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Abordare practic\u0103 pentru obiecte neliniare<\/h2>\n <p>Echilibrarea unui obiect neliniar \u00eencepe \u00eentotdeauna nu cu instalarea unei greut\u0103\u021bi de prob\u0103, ci cu evaluarea comportamentului la vibra\u021bii. Dac\u0103 amplitudinea \u0219i faza deriv\u0103 \u00een mod clar \u00een timp, se modific\u0103 de la un \u00eenceput la altul sau reac\u021bioneaz\u0103 brusc la varia\u021bii mici de vitez\u0103, prima sarcin\u0103 este de a ob\u021bine cel mai stabil mod de func\u021bionare posibil. F\u0103r\u0103 aceasta, orice calcule vor fi aleatorii.<\/p>\n <p>Primul pas practic este alegerea vitezei corecte. Obiectele neliniare sunt extrem de sensibile la rezonan\u021b\u0103, a\u0219adar echilibrarea trebuie efectuat\u0103 la o vitez\u0103 c\u00e2t mai departe posibil de frecven\u021bele naturale. Aceasta \u00eenseamn\u0103 adesea deplasarea sub sau peste intervalul obi\u0219nuit de func\u021bionare. Chiar dac\u0103 vibra\u021biile la aceast\u0103 vitez\u0103 sunt mai mari, dar stabile, este preferabil\u0103 echilibrarea \u00eentr-o zon\u0103 rezonant\u0103.<\/p>\n <p>\u00cen continuare, este important s\u0103 se minimizeze toate sursele de neliniaritate suplimentar\u0103. \u00cenainte de echilibrare, toate elementele de fixare trebuie verificate \u0219i str\u00e2nse, jocurile eliminate pe c\u00e2t posibil, iar suporturile \u0219i unit\u0103\u021bile de rulment inspectate pentru sl\u0103bire. Echilibrarea nu compenseaz\u0103 jocurile sau frecarea, dar poate fi posibil\u0103 dac\u0103 ace\u0219ti factori sunt adu\u0219i la o stare stabil\u0103.<\/p>\n <p>C\u00e2nd se lucreaz\u0103 cu un obiect neliniar, nu ar trebui utilizate din obi\u0219nuin\u021b\u0103 ponderi de testare mici. O pondere de testare prea mic\u0103 adesea nu reu\u0219e\u0219te s\u0103 deplaseze sistemul \u00eentr-o regiune repetabil\u0103, iar schimbarea vibra\u021biei devine comparabil\u0103 cu zgomotul de instabilitate. Ponderea de testare trebuie s\u0103 fie suficient de mare pentru a provoca o schimbare clar\u0103 \u0219i reproductibil\u0103 a vectorului de vibra\u021bie, dar nu at\u00e2t de mare \u00eenc\u00e2t s\u0103 antreneze obiectul \u00eentr-un regim de func\u021bionare diferit.<\/p>\n <p>M\u0103sur\u0103torile ar trebui efectuate rapid \u0219i \u00een condi\u021bii identice. Cu c\u00e2t trece mai pu\u021bin timp \u00eentre m\u0103sur\u0103tori, cu at\u00e2t este mai mare \u0219ansa ca parametrii dinamici ai sistemului s\u0103 r\u0103m\u00e2n\u0103 neschimba\u021bi. Este recomandabil s\u0103 se efectueze mai multe runde de control f\u0103r\u0103 a modifica configura\u021bia pentru a confirma c\u0103 obiectul se comport\u0103 consecvent.<\/p>\n <p>Este foarte important s\u0103 se fixeze punctele de montare ale senzorului de vibra\u021bii \u0219i orientarea acestora. Pentru obiectele neliniare, chiar \u0219i o mic\u0103 deplasare a senzorului poate provoca modific\u0103ri vizibile de faz\u0103 \u0219i amplitudine, care pot fi interpretate \u00een mod eronat ca efect al greut\u0103\u021bii de prob\u0103.<\/p>\n <p>\u00cen calcule, aten\u021bia nu trebuie acordat\u0103 concordan\u021bei numerice exacte, ci tendin\u021belor. Dac\u0103 vibra\u021biile scad constant odat\u0103 cu corec\u021biile succesive, acest lucru indic\u0103 faptul c\u0103 echilibrarea se \u00eendreapt\u0103 \u00een direc\u021bia corect\u0103, chiar dac\u0103 coeficien\u021bii de influen\u021b\u0103 nu converg formal.<\/p>\n <p>Nu se recomand\u0103 stocarea \u0219i reutilizarea coeficien\u021bilor de influen\u021b\u0103 pentru obiecte neliniare. Chiar dac\u0103 un ciclu de echilibrare are succes, \u00een timpul urm\u0103toarei porniri obiectul poate intra \u00eentr-un regim diferit, iar coeficien\u021bii anteriori nu vor mai fi valizi.<\/p>\n <p>Trebuie re\u021binut faptul c\u0103 echilibrarea unui obiect neliniar este adesea un compromis. Scopul nu este de a ob\u021bine cea mai mic\u0103 vibra\u021bie posibil\u0103, ci de a aduce ma\u0219ina \u00eentr-o stare stabil\u0103 \u0219i repetabil\u0103, cu un nivel acceptabil de vibra\u021bii. \u00cen multe cazuri, aceasta este o solu\u021bie temporar\u0103 p\u00e2n\u0103 c\u00e2nd rulmen\u021bii sunt repara\u021bi, supor\u021bii sunt restaura\u021bi sau structura este modificat\u0103.<\/p>\n <p>Principalul principiu practic este stabilizarea mai \u00eent\u00e2i a obiectului, apoi echilibrarea acestuia \u0219i abia dup\u0103 aceea evaluarea rezultatului. Dac\u0103 stabilizarea nu poate fi realizat\u0103, echilibrarea ar trebui considerat\u0103 o m\u0103sur\u0103 auxiliar\u0103, mai degrab\u0103 dec\u00e2t o solu\u021bie final\u0103.<\/p>\n <\/section>\n\n <section id=\"reduced-correction\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Tehnica de corec\u021bie cu greutate redus\u0103<\/h2>\n <p>\u00cen practic\u0103, la echilibrarea obiectelor neliniare, o alt\u0103 tehnic\u0103 important\u0103 se dovede\u0219te adesea eficient\u0103. Dac\u0103 instrumentul calculeaz\u0103 o pondere de corec\u021bie folosind un algoritm standard, instalarea ponderii complete calculate agraveaz\u0103 frecvent situa\u021bia: vibra\u021biile pot cre\u0219te, faza poate s\u0103ri, iar obiectul poate trece \u00eentr-un mod de func\u021bionare diferit.<\/p>\n <p>\u00cen astfel de cazuri, instalarea unei ponderi de corec\u021bie reduse func\u021bioneaz\u0103 bine - de dou\u0103 sau uneori chiar de trei ori mai mic\u0103 dec\u00e2t valoarea calculat\u0103 de instrument. Acest lucru ajut\u0103 la evitarea \u201carunc\u0103rii\u201d sistemului din regiunea condi\u021bionat liniar\u0103 \u00eentr-un alt regim neliniar. Practic, corec\u021bia este aplicat\u0103 u\u0219or, cu un pas mic, f\u0103r\u0103 a provoca o modificare brusc\u0103 a parametrilor dinamici ai obiectului.<\/p>\n <p>Dup\u0103 instalarea greut\u0103\u021bii reduse, trebuie efectuat\u0103 o rulare de control \u0219i trebuie evaluat\u0103 tendin\u021ba vibra\u021biilor. Dac\u0103 amplitudinea scade constant \u0219i faza r\u0103m\u00e2ne relativ stabil\u0103, corec\u021bia poate fi repetat\u0103 folosind aceea\u0219i abordare, apropiindu-se treptat de nivelul minim de vibra\u021bii realizabil. Aceast\u0103 metod\u0103 pas cu pas este adesea mai fiabil\u0103 dec\u00e2t instalarea integral\u0103 a greut\u0103\u021bii de corec\u021bie calculate dintr-o dat\u0103.<\/p>\n <p>Aceast\u0103 tehnic\u0103 este eficient\u0103 \u00een special pentru obiecte cu jocuri, frecare uscat\u0103 \u0219i suporturi moi-dure, unde corec\u021bia complet\u0103 calculat\u0103 scoate imediat sistemul din zona liniar\u0103 condi\u021bionat\u0103. Utilizarea unor mase de corec\u021bie reduse permite obiectului s\u0103 r\u0103m\u00e2n\u0103 \u00een cel mai stabil regim de func\u021bionare \u0219i face posibil\u0103 ob\u021binerea unui rezultat practic chiar \u0219i acolo unde echilibrarea este considerat\u0103 formal imposibil\u0103.<\/p>\n <p>Este important s\u0103 \u00een\u021belegem c\u0103 aceasta nu este o \u201ceroare a instrumentului\u201d, ci o consecin\u021b\u0103 a fizicii sistemelor neliniare. Instrumentul calculeaz\u0103 corect pentru un model liniar, \u00een timp ce inginerul adapteaz\u0103 rezultatul \u00een practic\u0103 la comportamentul real al sistemului mecanic.<\/p>\n <\/section>\n\n <section id=\"conclusion\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">Principiul final<\/h2>\n <p>\u00cen cele din urm\u0103, o echilibrare reu\u0219it\u0103 nu \u00eenseamn\u0103 doar calcularea unei greut\u0103\u021bi \u0219i a unui unghi. Necesit\u0103 \u00een\u021belegerea comportamentului dinamic al obiectului, a liniarit\u0103\u021bii sale, a stabilit\u0103\u021bii vibra\u021biilor \u0219i a distan\u021bei fa\u021b\u0103 de condi\u021biile de rezonan\u021b\u0103. Balanset-1A ofer\u0103 toate instrumentele necesare pentru m\u0103surare, analiz\u0103 \u0219i calcul, dar rezultatul final este \u00eentotdeauna determinat de starea mecanic\u0103 a sistemului \u00een sine. Aceasta este ceea ce distinge o abordare formal\u0103 de practica inginereasc\u0103 real\u0103 \u00een diagnosticarea vibra\u021biilor \u0219i echilibrarea rotorului.<\/p>\n <\/section>\n\n <section id=\"faq\" class=\"vma-anchor\">\n <h2 class=\"vma-h2\">\u00centreb\u0103ri \u0219i r\u0103spunsuri<\/h2>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">De ce se modific\u0103 imprevizibil amplitudinea \u0219i faza vibra\u021biilor dup\u0103 instalarea unei greut\u0103\u021bi de prob\u0103 \u0219i de ce calculul greut\u0103\u021bii de corec\u021bie d\u0103 un rezultat slab?<\/div>\n <p class=\"vma-a\">Acesta este un semn al unui obiect neliniar. \u00centr-un obiect liniar, amplitudinea vibra\u021biei este propor\u021bional\u0103 cu dezechilibrul, iar faza se schimb\u0103 cu acela\u0219i unghi ca \u0219i pozi\u021bia unghiular\u0103 a greut\u0103\u021bii. C\u00e2nd aceste condi\u021bii sunt \u00eenc\u0103lcate, coeficientul de influen\u021b\u0103 nu mai este constant, iar algoritmul standard de echilibrare \u00eencepe s\u0103 produc\u0103 erori. Cauzele tipice sunt jocurile lag\u0103relor, suporturile sl\u0103bite, frecarea \u0219i func\u021bionarea \u00een apropierea rezonan\u021bei.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">Ce este un obiect liniar din punctul de vedere al echilibr\u0103rii?<\/div>\n <p class=\"vma-a\">Un obiect liniar este un sistem rotoric \u00een care, la aceea\u0219i vitez\u0103 de rota\u021bie, amplitudinea vibra\u021biei este direct propor\u021bional\u0103 cu magnitudinea dezechilibrului, iar faza vibra\u021biei urmeaz\u0103 strict pozi\u021bia unghiular\u0103 a masei dezechilibrate. Pentru astfel de obiecte, coeficientul de influen\u021b\u0103 este constant \u0219i nu depinde de masa greut\u0103\u021bii de prob\u0103.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">Ce este considerat un obiect neliniar \u00een echilibrare?<\/div>\n <p class=\"vma-a\">Un obiect neliniar este un sistem \u00een care propor\u021bionalitatea dintre vibra\u021bie \u0219i dezechilibru \u0219i\/sau constan\u021ba rela\u021biei de faz\u0103 este \u00eenc\u0103lcat\u0103. Amplitudinea vibra\u021biei \u0219i faza \u00eencep s\u0103 depind\u0103 de masa greut\u0103\u021bii de prob\u0103. Cel mai adesea, acest lucru este asociat cu jocurile lag\u0103relor, uzura, frecarea uscat\u0103, reazeme moi-dure sau angrenarea elementelor structurale mai rigide.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">Este posibil s\u0103 echilibrezi un obiect neliniar folosind un instrument conceput pentru sisteme liniare?<\/div>\n <p class=\"vma-a\">Da, dar rezultatul este instabil \u0219i depinde de modul de operare. Echilibrarea este posibil\u0103 doar \u00eentr-un interval limitat, unde obiectul se comport\u0103 condi\u021bionat liniar. \u00cen afara acestui interval, coeficien\u021bii de influen\u021b\u0103 se modific\u0103 \u0219i repetabilitatea rezultatului se pierde.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">Care este coeficientul de influen\u021b\u0103 \u00een termeni simpli?<\/div>\n <p class=\"vma-a\">Coeficientul de influen\u021b\u0103 este o m\u0103sur\u0103 a sensibilit\u0103\u021bii vibra\u021biilor la modific\u0103rile dezechilibrului. Acesta arat\u0103 c\u00e2t de mult se va modifica vectorul de vibra\u021bii atunci c\u00e2nd o greutate de prob\u0103 cunoscut\u0103 este instalat\u0103 \u00eentr-un plan dat la o vitez\u0103 dat\u0103.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">De ce se modific\u0103 coeficientul de influen\u021b\u0103 de la o m\u0103sur\u0103toare la alta?<\/div>\n <p class=\"vma-a\">Coeficientul de influen\u021b\u0103 este instabil dac\u0103 obiectul este neliniar, dac\u0103 vibra\u021bia este instabil\u0103 \u00een timp sau dac\u0103 sunt prezente rezonan\u021b\u0103, \u00eenc\u0103lzire termic\u0103, elemente de fixare sl\u0103bite sau condi\u021bii de frecare \u00een schimbare. \u00cen astfel de cazuri, pornirile repetate produc valori diferite ale amplitudinii \u0219i fazei.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">C\u00e2nd pot fi utiliza\u021bi coeficien\u021bii de influen\u021b\u0103 stoca\u021bi?<\/div>\n <p class=\"vma-a\">Coeficien\u021bii de influen\u021b\u0103 stoca\u021bi pot fi utiliza\u021bi numai pentru rotoare identice care func\u021bioneaz\u0103 la aceea\u0219i vitez\u0103, \u00een acelea\u0219i condi\u021bii de instalare \u0219i rigiditate a suportului. Obiectul trebuie s\u0103 fie liniar \u0219i stabil la vibra\u021bii. Chiar \u0219i o mic\u0103 modificare a condi\u021biilor face ca vechii coeficien\u021bi s\u0103 nu fie fiabili.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">De ce se modific\u0103 vibra\u021biile \u00een timpul \u00eenc\u0103lzirii chiar \u0219i f\u0103r\u0103 o modificare a dezechilibrului?<\/div>\n <p class=\"vma-a\">\u00cen timpul \u00eenc\u0103lzirii, jocurile rulmen\u021bilor, rigiditatea suportului, v\u00e2scozitatea lubrifiantului \u0219i nivelul de frecare se modific\u0103. Acest lucru modific\u0103 parametrii dinamici ai sistemului \u0219i, ca urmare, modific\u0103 amplitudinea \u0219i faza vibra\u021biilor.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">Ce este instabilitatea vibra\u021biilor \u0219i de ce interfereaz\u0103 cu echilibrarea?<\/div>\n <p class=\"vma-a\">Instabilitatea vibra\u021biilor este o modificare a amplitudinii \u0219i\/sau a fazei \u00een timp, la o vitez\u0103 de rota\u021bie constant\u0103. Echilibrarea se bazeaz\u0103 pe compararea vectorilor de vibra\u021bie, astfel \u00eenc\u00e2t, atunci c\u00e2nd vibra\u021bia este instabil\u0103, compara\u021bia \u00ee\u0219i pierde sensul, iar calculul devine nesigur.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">Ce tipuri de instabilitate vibra\u021bional\u0103 exist\u0103?<\/div>\n <p class=\"vma-a\">Exist\u0103 instabilitate structural\u0103 inerent\u0103, instabilitate lent\u0103 \u201ct\u00e2r\u00e2toare\u201d, varia\u021bii de la \u00eenceput la \u00eenceput, instabilitate legat\u0103 de \u00eenc\u0103lzire \u0219i instabilitate legat\u0103 de rezonan\u021b\u0103 atunci c\u00e2nd se opereaz\u0103 \u00een apropierea frecven\u021belor naturale.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">De ce este imposibil s\u0103 echilibrezi un rotor \u00een zona de rezonan\u021b\u0103?<\/div>\n <p class=\"vma-a\">\u00cen zona de rezonan\u021b\u0103, chiar \u0219i un mic dezechilibru provoac\u0103 o cre\u0219tere brusc\u0103 a vibra\u021biilor, iar faza devine extrem de sensibil\u0103 la mici schimb\u0103ri. \u00cen aceste condi\u021bii, obiectul devine neliniar, iar rezultatele echilibr\u0103rii \u00ee\u0219i pierd semnifica\u021bia fizic\u0103.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">Cum se poate spune c\u0103 viteza de echilibrare este apropiat\u0103 de o vitez\u0103 rezonant\u0103?<\/div>\n <p class=\"vma-a\">Semnele tipice sunt o cre\u0219tere brusc\u0103 a vibra\u021biilor cu schimb\u0103ri mici de vitez\u0103, faz\u0103 instabil\u0103, anomalii largi \u00een spectru \u0219i sensibilitate ridicat\u0103 a vibra\u021biilor la varia\u021bii minore de rota\u021bie pe minut. Un maxim de vibra\u021bii este adesea observat \u00een timpul pornirii sau al decelera\u021biei libere.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">De ce vibra\u021biile ridicate nu \u00eenseamn\u0103 \u00eentotdeauna un dezechilibru mare?<\/div>\n <p class=\"vma-a\">Vibra\u021biile ridicate pot fi cauzate de rezonan\u021b\u0103, structuri sl\u0103bite, defecte de funda\u021bie sau probleme la rulmen\u021bi. \u00cen astfel de cazuri, echilibrarea nu va elimina cauza vibra\u021biilor.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">Care este diferen\u021ba dintre deplasarea vibra\u021biilor, viteza vibra\u021biilor \u0219i accelera\u021bia vibra\u021biilor?<\/div>\n <p class=\"vma-a\">Deplasarea vibra\u021biilor caracterizeaz\u0103 amplitudinea mi\u0219c\u0103rii, viteza vibra\u021biilor caracterizeaz\u0103 viteza acestei mi\u0219c\u0103ri, iar accelera\u021bia vibra\u021biilor caracterizeaz\u0103 accelera\u021bia. Aceste m\u0103rimi sunt corelate, dar fiecare este mai potrivit\u0103 pentru detectarea anumitor tipuri de defecte \u0219i intervale de frecven\u021b\u0103.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">De ce sunt de obicei specificate limitele de vibra\u021bii \u00een termeni de vitez\u0103 a vibra\u021biilor?<\/div>\n <p class=\"vma-a\">Viteza vibra\u021biilor reflect\u0103 nivelul de energie al vibra\u021biilor pe o gam\u0103 larg\u0103 de frecven\u021be \u0219i este convenabil\u0103 pentru evaluarea st\u0103rii generale a ma\u0219inilor conform standardelor ISO.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">Este posibil s\u0103 se converteasc\u0103 direct deplasarea vibra\u021biei \u00een vitez\u0103 de vibra\u021bie \u0219i invers?<\/div>\n <p class=\"vma-a\">Conversia corect\u0103 este posibil\u0103 doar pentru vibra\u021bii armonice de o singur\u0103 frecven\u021b\u0103. Pentru spectre de vibra\u021bii complexe, astfel de conversii ofer\u0103 doar rezultate aproximative.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">De ce vibra\u021biile r\u0103m\u00e2n ridicate dup\u0103 echilibrare?<\/div>\n <p class=\"vma-a\">Printre motivele posibile se num\u0103r\u0103 rezonan\u021ba, defectele de funda\u021bie, elementele de fixare sl\u0103bite, uzura rulmen\u021bilor, nealinierea sau neliniaritatea obiectelor. Echilibrarea elimin\u0103 doar dezechilibrul, nu \u0219i alte defecte.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">Cum se poate spune c\u0103 problema nu este \u00een rotor, ci \u00een funda\u021bie?<\/div>\n <p class=\"vma-a\">Dac\u0103 nu se detecteaz\u0103 defecte mecanice \u0219i vibra\u021biile nu scad dup\u0103 echilibrare, este necesar s\u0103 se analizeze distribu\u021bia vibra\u021biilor pe ma\u0219in\u0103 \u0219i pe funda\u021bie. Semnele tipice sunt vibra\u021biile ridicate ale carcasei \u0219i bazei \u0219i schimb\u0103rile de faz\u0103 \u00eentre punctele de m\u0103surare.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">De ce este important\u0103 instalarea corect\u0103 a senzorilor de vibra\u021bii?<\/div>\n <p class=\"vma-a\">Instalarea incorect\u0103 a senzorului distorsioneaz\u0103 amplitudinea \u0219i faza, reduce repetabilitatea m\u0103sur\u0103torilor \u0219i poate duce la concluzii diagnostice incorecte \u0219i la rezultate eronate ale echilibr\u0103rii.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">De ce diferite puncte de m\u0103surare arat\u0103 niveluri diferite de vibra\u021bii?<\/div>\n <p class=\"vma-a\">Vibra\u021biile sunt distribuite neuniform \u00een \u00eentreaga structur\u0103. Rigiditatea, masele \u0219i formele modurilor difer\u0103, astfel \u00eenc\u00e2t amplitudinea \u0219i faza pot varia semnificativ de la un punct la altul.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">Este posibil\u0103 echilibrarea unui rotor cu rulmen\u021bi uza\u021bi?<\/div>\n <p class=\"vma-a\">De regul\u0103, nu. Uzura \u0219i jocurile crescute fac ca obiectul s\u0103 fie neliniar. Echilibrarea devine instabil\u0103 \u0219i nu ofer\u0103 un rezultat pe termen lung. Excep\u021biile sunt posibile numai cu jocuri de proiectare \u0219i condi\u021bii stabile.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">De ce difer\u0103 rezultatul echilibr\u0103rii dup\u0103 fiecare pornire?<\/div>\n <p class=\"vma-a\">Pornirea creeaz\u0103 sarcini dinamice mari. Dac\u0103 structura este sl\u0103bit\u0103, pozi\u021biile relative ale elementelor se schimb\u0103 dup\u0103 fiecare pornire, ceea ce duce la modific\u0103ri ale parametrilor de vibra\u021bie.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">C\u00e2nd este acceptabil\u0103 echilibrarea serial\u0103 folosind coeficien\u021bi de influen\u021b\u0103?<\/div>\n <p class=\"vma-a\">Echilibrarea \u00een serie este posibil\u0103 pentru rotoare identice instalate \u00een condi\u021bii identice, cu stabilitate la vibra\u021bii \u0219i absen\u021b\u0103 a rezonan\u021bei. \u00cen acest caz, coeficien\u021bii de influen\u021b\u0103 de la primul rotor pot fi aplica\u021bi \u0219i celor ulterioare.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">De ce rezultatul \u00eenceteaz\u0103 brusc s\u0103 mai fie repetabil \u00een timpul echilibr\u0103rii seriale?<\/div>\n <p class=\"vma-a\">Acest lucru se datoreaz\u0103 de obicei modific\u0103rilor rigidit\u0103\u021bii suportului, diferen\u021belor de asamblare, modific\u0103rilor vitezei de rota\u021bie sau tranzi\u021biei obiectului \u00eentr-un regim de func\u021bionare neliniar.<\/p>\n <\/div>\n\n <div class=\"vma-qa\">\n <div class=\"vma-q\">Care este principalul criteriu pentru o echilibrare reu\u0219it\u0103?<\/div>\n <p class=\"vma-a\">Reducerea vibra\u021biilor la un nivel stabil, men\u021bin\u00e2nd \u00een acela\u0219i timp repetabilitatea amplitudinii \u0219i fazei de la \u00eenceput la \u00eenceput \u0219i absen\u021ba semnelor de rezonan\u021b\u0103 sau neliniaritate.<\/p>\n <\/div>\n <\/section>\n <\/div>\n <\/main>\n <\/div>\n<\/body>\n<\/html>\n\n<\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Nonlinear Objects in Rotor Balancing: Causes, Symptoms, and Practical Approach Nonlinear Objects in Rotor Balancing Why balancing \u201cdoes not work\u201d, why influence coefficients change, and how to proceed in real field conditions Contents Overview Linear & nonlinear vibrations Linear vs nonlinear objects What are linear objects? Graph of linearity Influence […]<\/p>\n","protected":false},"author":2,"featured_media":5200,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ai_generated_summary":"","footnotes":""},"categories":[4,113,9,5,110],"tags":[],"class_list":["post-5199","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-example","category-measurement","category-rotors","category-solutions","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/posts\/5199","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/comments?post=5199"}],"version-history":[{"count":3,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/posts\/5199\/revisions"}],"predecessor-version":[{"id":20911,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/posts\/5199\/revisions\/20911"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/media\/5200"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/media?parent=5199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/categories?post=5199"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/tags?post=5199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}