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©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(2004)05200422041,1,2,1(1.,210007;2.,450052):,3,,,,,,,:;;;:TP206.3:ACBR2basedMethodforFaultDiagnosisofMachineryZHANGQi1,SUNShao2wen1,LIWen2hong2,ZHENGHui2juan1(1.EngineeringInstituteofEngineeringCorps,PLAUniv.ofSci.&Tech.,Nanjing21007,China;2.HenanUniversityofTechnology,Zhengzhou450052,China)Abstract:ThemechanismoftheCBR2basedfaultdiagnosismethodisintroduced,andtheprocessingofCBR2basedfaultdiagnosisismainlyanalyzedfromthreeaspects:processingmodelofCBRdiagnosis,ex2pressionandstorage,retrievingandmatching,modificationandmaintenanceofcases.ItisshownthattheCBRmethodisflexiblyandsimplyimplemented,withstrongself2studyingability.Usingvastamountofcasecharacterset,itcanaccumulateexperienceofsolvingproblems,avoidthedifficultyofgainingknowl2edge,shortenthecourseofsolvingproblems,improvetheefficiencyofreasoningandsavethetimeofex2ploitation.Ithasagoodprospectforapplication.Keywords:case2basedreasoning;machinery;faultdiagnosis;artificialintelligent:2003212209.:(1958-),,,.,,,,,,,,,,CBR(case2based2reasoning),1CBR,CBR,,,552004()JournalofPLAUniversityofScienceandTechnologyVol.5No.5Oct.2004©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.();,;CBR,11CBRFig.1ProcessingmodelofCBRdiagnosisCBR[1]3:(1)(retrieve),,,(2)(modify),,(3)(store),,,CBR,2CBR2.1CBR,,,,3:[2],;;;,;,,,,:FaultCase=(case1)::11:1:,1:1:1:case1212:case1221,,,,2.2(),CBR:,,,,(),[3]345,:©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1)Ds(c,c3)=1-ni=1Wi(Xi-Yi)2ön,(1):Dscc3;Wi;n;XiYicc3Ds=1,,;Ds=0,,,(1)casel:,,(0.4);,,(0.5);,,(0.1):(0.6)(2)case2:,,(0.4);,,(0.5);,,(0.1):(0.7),,0.2;,0.2;,0.2;0.1;0.1(1),Ds=0.8432.3,,,,,,,,,CBR,,,,,,[4],:(1)(0.95),(2),,,[5]4:;;;3[6],M={,},Ci,11Tab.1CompositionoffaultresearchspaceCixi1xi2xi3xi4xi5xi6xi7xi8Ci10.10.20.40.20.1Ci20.30.10.6Ci30.30.20.5Ci40.20.50.10.2Ci50.20.10.20.10.30.1Ci60.60.20.10.11,xi1,xi2,xi3,xi4,xi5,xi6,xi7,xi8;Ci1,Ci2,Ci3,Ci4,Ci5,Ci6,:(0.2);(0.5);(0.1);(0.2),1,(1)22:n,S,N,Ds2,Ci1Ci4Ds0.9,Ci4Ci1,Ci4,44()5©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:[1].[M].:,1998.[2],.[M].:,1997.[3],,.[J].,2001,28(5):5882592.[4],,,.[J].,1997,10(1):55257.[5]SHIZZ,ZHOUH,WANGJ.Applyingcase2basedreasoningtoengineoildesign[J].ArtificialIntelli2genceinEngineering,1996,7(11):1672172.[6]STEVEM.Casebasedreasoning:marketapplicationsandfitwithothertechnologies[J].ExpertSystemwithApplication,1998,6(1):972104.(:)2004,,,,,20042004,,A()545,: