ent,etobeconcernedbyplentyofresearchinterests.Accordingtorelevantdatastatistics,theprimaryfailuremodeofcoolingfanismechanicalfailure,andbearingfailureisthemaincauseofmechanicalfailure,forthisconsequence,thefaultdiagnosisofcoolingfanisbasedonbearingfaultdiagnosis.eleratedlifetestaimedatcoolingfanfaultdiagnosis,builtatestplatform,designedadataacquisitionsystem,andanalyzedthegathereddata.Themainprocessesofthetestdesignincludedthechoiceofdevices(primarilythechoiceofsensorandDAQcard),thedesignoftestequipmentbase,andthedesignofdataacquisitionsystembasedonLabVIEWsoftware.Inthedataanalysissection,ordingtothedifferentcharacteristicsofdata,andthefaultdiagnosisofcoolingfanrollingbearingwasrealizedbyusingAR-position.Keywords:coolingfan,testplatform,LabVIEW,faultdiagnosis,AR-MEDfilter,waveletanalysisII
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