{"id":192,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/phase\/"},"modified":"2026-05-23T22:37:52","modified_gmt":"2026-05-23T22:37:52","slug":"phase","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/da\/glossary\/phase\/","title":{"rendered":"Hvad er fase-i-vibrationsanalyse?"},"content":{"rendered":"

Forst\u00e5else af fasen i vibrationsanalyse<\/h1>\n\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t
\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\"Balanset-1A\t\t\t\t\t\t\t\t\t<\/a>\n\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\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\tEnheder<\/a><\/span>\n\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tB\u00e6rbart afbalanceringsapparat og vibrationsanalysator Balanset-1A<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t
\n\n\t\t\t\t\t\t\t\t\t

\u20ac<\/span>1,975.00<\/span> + moms (hvis relevant)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t<\/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>Tilf\u00f8j til kurv<\/a>\t\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\"Balanset-1A\t\t\t\t\t\t\t\t\t<\/a>\n\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\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\tDele<\/a><\/span>\n\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tVibrationssensor<\/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
\n\n\t\t\t\t\t\t\t\t\t

\u20ac<\/span>90.00<\/span> + moms (hvis relevant)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t<\/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>Tilf\u00f8j til kurv<\/a>\t\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\"Optisk\t\t\t\t\t\t\t\t\t<\/a>\n\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\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\tDele<\/a><\/span>\n\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tOptisk sensor (laser-tachometer)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t
\n\n\t\t\t\t\t\t\t\t\t

\u20ac<\/span>124.00<\/span> + moms (hvis relevant)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t<\/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>Tilf\u00f8j til kurv<\/a>\t\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\"Vibromera\t\t\t\t\t\t\t\t\t<\/a>\n\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\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\tEnheder<\/a><\/span>\n\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tBalanset-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
\n\n\t\t\t\t\t\t\t\t\t

\u20ac<\/span>6,803.00<\/span> + moms (hvis relevant)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t<\/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>Tilf\u00f8j til kurv<\/a>\t\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>
\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\"Magnetbase.\"\t\t\t\t\t\t\t\t\t<\/a>\n\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\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\tDele<\/a><\/span>\n\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tMagnetisk stativ Insize-60-kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t
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\u20ac<\/span>46.00<\/span> + moms (hvis relevant)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t<\/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>Tilf\u00f8j til kurv<\/a>\t\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\"Reflekterende\t\t\t\t\t\t\t\t\t<\/a>\n\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\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\tDele<\/a><\/span>\n\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tReflekterende tape<\/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
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\u20ac<\/span>10.00<\/span> + moms (hvis relevant)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t<\/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>Tilf\u00f8j til kurv<\/a>\t\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\"Balanset-1A-s\u00e6t\t\t\t\t\t\t\t\t\t<\/a>\n\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\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\tEnheder<\/a><\/span>\n\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tDynamisk balancer \"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
\n\n\t\t\t\t\t\t\t\t\t

\u20ac<\/span>1,735.00<\/span> + moms (hvis relevant)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t<\/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>Tilf\u00f8j til kurv<\/a>\t\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

Fase<\/strong> beskriver tidsm\u00e6ssigt forhold mellem to signaler eller, mere brugbar i arbejde med roterende maskiner, tidspunktet for et vibrationer<\/a> signal i forhold til et fast referencem\u00e6rke p\u00e5 den roterende aksel. Det besvarer sp\u00f8rgsm\u00e5let om hvor<\/em> in the rotation the vibration is happening, and it is normally measured in degrees from 0\u00b0 to 360\u00b0, one full revolution of the shaft. If amplitude<\/a> tells you hvor meget<\/em> en maskine vibrerer og frekvens<\/a> tells you hvor hurtigt<\/em>, fase fort\u00e6ller dig hvordan det bev\u00e6ger sig<\/em> \u2014 hvilket er pr\u00e6cis det, der adskiller fejl, der deler samme frekvens.<\/p>\n

Det sidste punkt er hjertesagen for, hvorfor fase betyder noget. Ubalance<\/a>, fejljustering<\/a>, en B\u00f8jet aksel<\/a> og l\u00f8shed<\/a> kan alle l\u00f8fte 1\u00d7- L\u00f8behastighed<\/a> top; fase er ofte den eneste m\u00e5de at skelne dem uden at demontere maskinen.<\/p>\n

1. Hvordan fase m\u00e5les<\/h2>\n

To signaler er n\u00f8dvendige for at l\u00e6se fase:<\/p>\n

    \n
  1. Et vibrationssignal<\/strong> \u2014 den prim\u00e6re m\u00e5ling fra en accelerometer<\/a> eller n\u00e6rhedssonde<\/a> observation af maskinens bev\u00e6gelse.<\/li>\n
  2. Et referencesignal<\/strong> \u2014 en impuls en gang pr. omdrejning fra en omdrejningst\u00e6ller<\/a>, rettet mod en strimmel af refleksb\u00e5nd<\/a> eller en keyway, s\u00e5 den sender en ren impuls hver gang m\u00e6rket passerer sensoren. Funktionelt spiller dette den samme rolle som en permanent installeret Keyphasor<\/a>.<\/li>\n<\/ol>\n

    Den vibrationsanalysator<\/a> then measures the time delay between the reference pulse and the first positive peak of the vibration signal at a chosen frequency \u2014 usually 1\u00d7 running speed \u2014 and converts that delay into an angle. A reading of 90\u00b0, for instance, means the vibration peak arrives one-quarter of a revolution after the reference mark passes the tachometer. Because the result is tied to a specific frequency, phase is most often quoted alongside the 1\u00d7 component; the same idea, generalised across the spectrum, is what makes the fasevinkel<\/a> en byggesten i diagrammer s\u00e5som Bode<\/a> og Nyquist<\/a> diagrams.<\/p>\n

    2. Fasens diagnostiske styrke<\/h2>\n

    Fase er meget mere end et tal. Ved at sammenligne afl\u00e6sninger taget p\u00e5 forskellige punkter p\u00e5 en maskine, i samme m\u00e5lingsretning, kan en analytiker bekr\u00e6fte eller udelukke specifikke diagnoser med h\u00f8j sikkerhed. Det tilbagevendende tema er sammenligningen af to steder: hvis de bev\u00e6ger sig together<\/em> peger billedet den ene vej; hvis de bev\u00e6ger sig i opposition<\/em> peger det en anden vej. Underafsnitene nedenfor d\u00e6kker de klassiske m\u00f8nstre.<\/p>\n

    Bekr\u00e6ftelse af ubalance<\/h3>\n

    Pure unbalance gives similar phase readings \u2014 typically within about \u00b130\u00b0 \u2014 when measured in the same radial direction (say, horizontal) at both bearings of a rotor. The whole rotor is being pulled in one direction at one instant by the heavy spot, so the two ends march in step. Comparing horizontal and vertical readings at one bearing adds another clue: genuine unbalance tends to show a roughly 90\u00b0 difference between them.<\/p>\n

    Diagnosticering af fejljustering<\/h3>\n

    Fase er en af de mest afg\u00f8rende m\u00e5der at bekr\u00e6fte aksel fejljustering<\/a>. Tag aksiale fasem\u00e5linger p\u00e5 hver side af en kobling<\/a>: a 180\u00b0 phase shift (\u00b130\u00b0) across it is the textbook signature of angular misalignment, showing that as one shaft moves axially out, the other moves in \u2014 a pivoting, see-saw motion at the coupling.<\/p>\n

    Adskillelse af ubalance fra en b\u00f8jet aksel<\/h3>\n

    B\u00e5de ubalance og en B\u00f8jet aksel<\/a> raise 1\u00d7 vibration, yet phase tells them apart. Axial phase readings taken at the two ends of the same motor or pump shaft that differ by about 180\u00b0 indicate a bow: the ends move in opposite axial directions as the bend rotates.<\/p>\n

    Identifikation af l\u00f8shed eller en revnet fundament<\/h3>\n

    N\u00e5r fasem\u00e5linger er uregelm\u00e6ssige, ustabile eller ikke-reproducerbare, er mekanisk l\u00f8shed<\/a> den s\u00e6dvanlige mist\u00e6nkt. En markant \u00e6ndring i fase, n\u00e5r sonden flyttes fra en maskinfod til dens basisplate, eller fra basispladen til fundamentet, peger p\u00e5 en l\u00f8s ankerbolt eller et revnet fundament \u2014 og tyder p\u00e5 utilstr\u00e6kkelig fundamentets stivhed<\/a>.<\/p>\n

    Bekr\u00e6ftelse af resonans<\/h3>\n

    N\u00e5r en maskine startes eller l\u00f8ber ned gennem en kritisk hastighed<\/a>, the 1\u00d7 phase makes a characteristic 90\u00b0 shift exactly at the resonans<\/a> peak og et fuldt 180\u00b0-skift p\u00e5 tv\u00e6rs af hele resonansregionen. Det at iagttage det skift \u2014 let registreret under en fril\u00f8b<\/a> \u2014 er en afg\u00f8rende m\u00e5de at bekr\u00e6fte en resonans snarere end et kraftproblem p\u00e5.<\/p>\n

    3. En hurtig referenceguide til fasem\u00f8nstre<\/h2>\n\n\n\n\n\n\n\n
    Observation<\/th>\nSandsynlig diagnose<\/th>\n<\/tr>\n
    Begge lejer i fase, samme radial retning<\/td>\nUbalance<\/td>\n<\/tr>\n
    \u2248180\u00b0 across the coupling, axial<\/td>\nVinkelforskydning<\/td>\n<\/tr>\n
    \u2248180\u00b0 across the two ends of one shaft, axial<\/td>\nB\u00f8jet \/ slynget aksel<\/td>\n<\/tr>\n
    Uregelm\u00e6ssig, ikke-reproducerbar fase<\/td>\nMekanisk l\u00f8shed<\/td>\n<\/tr>\n
    90\u00b0 shift at peak, 180\u00b0 through the region<\/td>\nResonans \/ kritisk hastighed<\/td>\n<\/tr>\n<\/table>\n

    Disse regler er vejledninger, ikke garantier: bekr\u00e6ft med amplitude, spektrumform og harmonisk<\/a> indhold f\u00f8r du g\u00e5r i gang med en reparation.<\/p>\n

    4. Fase som n\u00f8glen til balancering<\/h2>\n

    Fase er uundv\u00e6rlig for Rotorafbalancering<\/a>. 1\u00d7-faseafl\u00e6sningen peger direkte p\u00e5 den kantede placering af det tunge omr\u00e5de i forhold til referencem\u00e6rket og fort\u00e6ller teknikeren pr\u00e6cis, hvor man skal tilf\u00f8je eller fjerne en korrektionsv\u00e6gt<\/a>. I praksis registrerer analysatoren amplitude og fase, f\u00f8r en pr\u00f8vev\u00e6gt<\/a> monteres, igen herefter, og bruger \u00e6ndringen til at beregne den indflydelseskoefficienter<\/a> der giver den endelige korrektion. Et b\u00e6rbart to-kanals instrument som f.eks. Balanset-1A<\/a> udf\u00f8rer denne amplitude-og-fase-m\u00e5ling i maskinens egne lejer ved driftshastighed, derefter bekr\u00e6ftes resterende ubalance<\/a> n\u00e5r v\u00e6gtene er p\u00e5 plads. Til at arbejde ud af den kantede fordeling n\u00e5r en korrektion skal deles mellem v\u00e6gte, vores Vibrationsfasevinkelberegner<\/a> h\u00e5ndterer vektrorgeometrien.<\/p>\n

    5. Hvorfor fase fuldender billedet<\/h2>\n

    Uden fase ser en vibrationsanalytiker kun en del af historien \u2014 st\u00f8rrelses- og frekvensfunktioner, men ingen forst\u00e5else af, hvordan strukturen rent faktisk deformeres gennem hver omdrejning. Fase leverer den manglende kontekst, der konverterer en liste af toppe til en klar beskrivelse af bev\u00e6gelse og h\u00e6ver diagnostisk sikkerhed dramatisk. Det er forskellen mellem at vide, at en maskine vibrerer, og at vide hvorfor. Af den grund h\u00f8rer fase til i enhver seri\u00f8s diagnose og er det uomg\u00e6ngeligt grundlag for feltbalancering afbalancering<\/a>.<\/p>\n

    \n

    \u2190 Tilbage til hovedindekset<\/a><\/p>","protected":false},"excerpt":{"rendered":"

    En guide til faseanalyse i vibrationsoverv\u00e5gning. L\u00e6r, hvad fase er, hvordan den m\u00e5les ved hj\u00e6lp af et omdrejningst\u00e6ller, og dens afg\u00f8rende rolle i diagnosticering af fejl som ubalance og forkert justering.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-192","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/glossary\/192","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/glossary\/192\/revisions"}],"predecessor-version":[{"id":101296,"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/glossary\/192\/revisions\/101296"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/media?parent=192"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/categories?post=192"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/tags?post=192"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}