基于小波神经网络的滚动轴承故障诊断

X3,130025:,,:;;;;:TH133.3:A:1001-2265(2004)12-0081-03FaultdiagnosisofballbearingbasedonwaveletneuralnetworksLUShuangLIMengAbstract:Basedonthefrequencydomainfeatureofvibrationsignalvarianceofballbearing,energyeigenvectoroffrequencydomainispresentedusingwaveletpacketanalysismethod.Faultstateofballbearingisrecognizedbyusingradialbasisfunctionneuralnetworks.Theoryandexperimentshowsthatsuchmethodisavailable.Keywords:ballbearing;waveletpacketanalyse;eigenvector;neuralnetworks;faultdiagnosis30%,90%[1,2][3,4],,,121,[5],,,[6]2,,1[4],,,,18200412X:(9910)28PP0=nn03]P=nn03P00,:dP=3P0n30n2dn,,100%70%,70%,34.3%,65.7%4,,5,,,,,,,,,6,:(1),,;(2),,,;(3),,[][1].()[M].:,2000[2],1[J].,2003(3)[3],1[J].,2003(3)[4],.[J].,2003(1):2004-05-10:(1956-),,,()(82)E3j=|D3j(t)|2dt=nk=1|djk|2(12)djk(j=0,1,,7,k=1,2,,n)D3j(4)SS=[E30,E31,E32,E33,E34,E35,E36,E37](13)S,3.24040402,95%,0;1,97.5%,3,92.5%;1,97.5%,4,90%4,,RBF,[][1].[J].,1999,35(2):8891[2]R.Rubini.Applicationoftheenvelopeandwavelettransformanal2ysesforthediagnosisofincipientfaultsinballbearings[J].Me2chanicalSystemsandSignalProcessing,2001,15(2):287302[3].[M].:,2001[4].[M].:,2001[5].[M].:,1999[6].[M].:,2000[7].[D]1:,1999[8]ChenS,CowanCFN,GrantPM.Orthogonalleastsquareslearningalgorithmforradialbasisfunctionnetworks,IEEETrans.NeuralNetworks,1991(2):302309[9]SimonHaykin.NeuralNetworks:AComprehensiveFundation(SecondEdition).PrenticeHall,1999[10]FredricM.Ham.PrinciplesofNeuroComputingforScience&Engineering.McGrawHill,2001:2004-04-22:(1957-),,,,()48