基于两阶段动态对抗迁移建模的轴承故障诊断
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键词：故障诊断；迁移学习；梯度消失；两步式对抗；动态判别；滚动轴承中图分类号：TH133.3 文献标识码：A 文章编号：2095-5553（2026）02-0188-08
Fault diagnosis of bearings based on two-stage dynamic adversarial discriminant migration modeling
Liu Yuewen1，²，Xu Fan1， Li Yongting1，2.3，Qi Yongsheng1 2，3，Wang Shunli1. 2 （1.SchoolofElectricPowerImerMongoliaUniersityofTechnologyHohoto8oChina;2.Centerforteigt EnergyTechnologyandEqupmentEngineering，InnerMongoliaHighEducation Institutions，Hohhot，OOo8o，China; 3.Enginering Research CenterofLarge EnergyStorage Technology，MinistryofEducation，Hohhot，O1O08O，China）
Abstract：Aimingattheproblemsthattheuseof gradientinversionlayerintraditionalfault diagnosismethods iseasyto cause gradient disappearance，and the similarity between sourceand target domain samplescannot be dynamicall judged duetothediferencein distribution between thetwodistributions，resultinginverylowgeneralizationabilityof fault diagnosismodel，a two-stagedynamicadversarial migrationnetwork（TSDAMN）isputforward torealize themigration of bearingfault diagnosis.This network introduces a new two-step antagonism strategyand dynamic discriminant idea，by usingadistributedadversarial strategy，theclasifierand discriminatorare interactively trainedstepbystep，efctively solvingtheproblem ofgradient disappearing.Then，a dynamicadaptive learningalgorithmisproposed，whichcan efectivelyimprovethefaultfeatureclusteringabilityand improve theaccuracyoffaultdiagnosis bydynamicalladjusting the weight of edge distribution and condition distribution in the whole migration process.Finally， θ control is added to improvethecross entropy loss function to further refine the accuracy offault classfication.The bearingdata setof Case WesternReserveUniversityisusedfor experimentalverificationandcomparedwiththeclasicalalgorithm，theaverage accuracy of fault classification of the proposed method reaches 98.67% .The results show that the proposed method can classify faultsmore accuratelyand solve theproblem of lack of annotation. Keywords：faultdiagnosis；transferlearning；gradientvanishing;twostepadversarial;dynamicantagonistic;rolingbearings
0 引言
农机轴承作为旋转轴的支承件，是农业汽车、拖拉机、柴油机、电动机、脱粒机等农业机械的重要组成部分，其性能和可靠性会对农业生产产生直接的影响。（剩余11945字）
