融合相关基尼指数与优化Morlet小波的柔性薄壁椭圆轴承故障特征提取方法

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关键词：故障诊断;柔性薄壁椭圆轴承；故障特征提取；小波变换;相关基尼指数 中图分类号：TH165.3；TH133.3 文献标志码：A DOI：10.16385/j.cnki.issn.1004-4523.202403011

Fault feature extraction method for flexible thin-walled elliptical bearings integrating correlated Gini index and optimized Morlet wavelet

YU Yanjiang， ZHAO Xuezhi （School ofMechanical and Automotive Enginering，South China Universityof Technology，Guangzhou 510641，China）

Abstract：Flexiblethin-walledelipticalbearingseibitnotabledisparitiesiniematicatributesandfaultcharacteristicfruci comparedtoconventionalrolingbearings.ThispaperproposesemployingtheMorletwaveletwithahybridaquilaoptimizerandafrican vulturesoptimizationforextractingteirfaultfeaturesWhileMorletwavelettransformcancapturethetime-frequencycharacteristicsof signals，theacuracyofitsoutcosgreatlydependsoechsenparaetersofMorletwaveletTotackletisssue，ispaprostrcts anobjectivefunctionfootiingMorletwaveetparametersbyintegatigoceptsofeergyconcetrationandrecostructioacy Meanwhile，ahybridaquilaoptimizerandAfricanvulturesoptimizationisemploedtooptimizethewaveletparameters.Inaditio，afault featureextractiometdbsedoeoelatedGidexisprestedimigtoetctfreqeceevanttofaultsdcotrct time-domainsequensoffultfaturesTeexpeientresultsindicatethatorletwaveletisabltdesribeaoeacuratelytiing featuresofvibrationsignalswiththeproposedparameterptimizationmethod.Aditionaly，theextractionandreconstructionmethod designedithisppersucefullyseparatestefaultfeatureipusesfoeoalperodicipusesandvaliatestetivagnatue offaultcharacteristic frequencies，providinganapproach forfault diagnosis offlexible thin-walledelliptical bearings.

eywords：faultdiagnosis;flexibletin-wallellpticalbearing;fultfeatureextraction;wavelettransfom;coelatedGniind

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