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基于曲波变换的受电弓滑板裂纹故障检测 Title:FaultDetectionofPantographSkateCracksBasedonCurveletTransform Abstract: Thepantographskateisacriticalcomponentofelectrictrainsthatenablestheefficienttransmissionofelectricalpowerbetweentheoverheadlinesandthetrain.However,duetocontinuoususageandenvironmentalfactors,thepantographskateissusceptibletocrackformation.Detectingthesecracksinatimelymannerisessentialtoensurethesafeandreliableoperationofelectrictrains.Inthispaper,anovelapproachtocrackdetectioninpantographskatesbasedonthecurvelettransformisproposed.Thecurvelettransformisamulti-scale,multi-directionaltransformthathasbeenproveneffectiveintheanalysisofimageswithcomplexgeometriesandcurvilinearfeatures. 1.Introduction 1.1Background 1.2ObjectiveoftheStudy 1.3OverviewofthePaper 2.LiteratureReview 2.1PantographSkateCrackDetectionTechniques 2.2OverviewofCurveletTransform 2.3ApplicationsofCurveletTransforminImageAnalysis 3.Methodology 3.1DataCollectionandPre-processing 3.2CurveletTransformAlgorithm 3.3CrackDetectionAlgorithm 4.ExperimentalResults 4.1EvaluationMetrics 4.2DatasetDescription 4.3ExperimentalSetup 4.4ComparativeAnalysiswithExistingTechniques 4.5DiscussionofResults 5.Conclusion 5.1SummaryoftheStudy 5.2SignificanceoftheStudy 5.3FutureDirections References 1.Introduction Inthecontextofelectrictrains,thepantographskateisacriticalcomponentthatestablishesreliablecontactwiththeoverheadlinestotransmitelectricalpower.However,crackscanformonthepantographskateduetoavarietyoffactorssuchasmaterialfatigue,excessivestrain,andenvironmentalconditions.Detectingthesecracksinatimelymannerisessentialtopreventcatastrophicfailuresandensurethesafetyofpassengersandthereliableoperationofthetrain. 2.LiteratureReview Inrecentyears,varioustechniqueshavebeendevelopedforcrackdetectioninpantographskates.Theseincludevisualinspection,ultrasonictesting,acousticemissionanalysis,andthermalimaging.However,thesetechniqueshavelimitationsintermsofaccuracy,speed,andtheabilitytodetectsubtlecracks. Thecurvelettransformisawavele