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1、分類號:TPl81UDC:Y8584tt0單位代碼:10220學號:S0306192大慶石油學院碩士學位論文論文題目:基王厶王免疫算法韻故障診斷問題研究碩士生:指導教師:申請學位級別:王寨趨一任佳建£教授)王拳顧專業(yè)、學科:控壹Ⅱ理論與控制王程提交論文時間:20o6生3一月一15一旦答辯日期:靼Q車≥月塹目授予學位日期:2006年3月l5曰ResearchofFaultDiagnosisBasedonArtificialImmuneAl

2、gorithmAbs仃actThreefaultdiagnosismethodsbasedonArtificialImmuneAlgorithra(AlA、areresearchedinthispaperandusethemtodiagnosisthefaultofthepumpjacknledetailworkisasfollows:FaultdiagnosismethodbasedonImmuneneuralnetworkisdes

3、ignedinthispapertheimmunemechanismisintroducedwhenadjusttheweightofneuralnetwork,thismethodmakeuseoftheimmunealgorithm’ScapabilityofkeepingindividualdiversitytosearchtheweightofneuralnetworkglobalyitcanavoidtheBPalgorith

4、mfrombeingtrappedinthelacalvalueefficientlymeanwhileitcanimprovetheconvergencespeedofalgorithm,thefaultdiagnosisresearcharedoneonthepumpjack,andtwomethodsarecomparedandanalysedFaultdiagnosismethodbasedontheinlmunerespons

5、eisproposedTherealcodeisadoptedinthispaperinordertosolvetheproblemtllatusingbinarycodeincreasethecomputingCloneselectionandhypervariationisintroducedbesidesgeneticoperatorbytheauthoritCallimprovethespeedofgeneratingmemor

6、yantibodies,andimproveblindsearchcapabilityofthegeneticalgorithmwhengenarateantibodies,meanwhilethediversityofmemoryantibodiesisensuredInordertOmakethememoryantibodiesexpressstructuresandcharactersformoreantigens,thispap

7、erproposestheideathatusingmulti—antigenstogeneratememoryantibodiesandproposesthestrategythatstimulateandsuppresstheantibodieswhicharegeneratedbythesameantigenbasedonthelivingexpectionandthatstimulateandsuppresstheantibod

8、ieswhicharegeneratedbydifferentantigensbelongtothesamefaultpaRembasedontheconcentration,Thiscanavoid也e曲enomenonofimmaturityconvergenceBesides,knearestneighbor(KNN)methodbasedonthresholdisproposedinthispaperThefaultdiagno

9、sisresearchisdoneonthepumpjack,TheresultshowthatthismethodcangetmemoryantibodieswhichCanidentifyantigenseffectively,andtheeffecttoidentiifyantigenswhicharevariatedispresentedAbnormitydetectionandfaultdiagnosismethodbased

10、onnegativeselectionisdesigned,Theallthorintroducetleideaofalterabledetectorradiusinordertoexertthedetectionfunctionofdetectorsandneedn’ttosetdetectorradiusInordertosolvetheproblemofthedetectors’numberanddetectionarea,thi

11、sPaDeradoptsthemethodthatuseallnealalgorithmtooptimizedetectorsandmakethecoverspacefornonselflagerwithlimiteddetectorsBesidesinordertodetectanddiagnosetheunknownfaultpattern,thispaperputthedetectorswhicharenotactivatedto

12、gethertogetunknownpatternfaultdetectors,andtodetectnewpatternfaultThefaultdiagnosisresearchisdoneonthepumpjack,theresultshowthatthismethodcangetrapidandcorrectresultbasedonalotofnormaldata,andCangetgoodfaultdiagnosiseffe

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