01-自动变速器故障诊断方法与诊断系统研究

上海交通大学硕士学位论文自动变速器故障诊断方法与诊断系统研究姓名：陈真申请学位级别：硕士专业：车辆工程指导教师：胡宁20070101IAMESimVisualBasicAccess1II2AMESimAMESim34VisualBasicAccessIIIRESEARCHONFAULTDIAGNOSISTICMETHODANDSYSTEMFORAUTOMATICTRANSMISSIONABSTRACTSincetheautomatictransmission(AT)hasaseriesofadvantagessuchasgoodvelocityratiotransformationperformance,theimprovementofthecomfortableandcrossingability,toeasethetirednessofdriver,toreduceemissionofengineandsoon,ithaswidelyusedinmodernautomobile.ATisacomplexsystemwhichincludingmechanicalsubsystem,electronicsubsystemandhydraulicsubsystem.Itsconfigurationandtheoryiscomplicated,whichresultsindifficultlytodiagnose.ResearchonfailureanalysisforATisthefoundationoftheanalysisofsystemreliabilityandhasthegreatsignificancetotheproductdevelopment.Atthesametime,itisthebasisofdevelopmentforOBDwhichhasmoreformidablefunction.Throughtheattempttodesigntheautomatictransmissionfaultdiagnosissystem,ithasprovidedthemethodfortheATfaultdiagnosisbyusingsoftware,whichhasavoidtheblindnessofcurrentdiagnosisforAT.WiththedevelopmentofdiagnostictechnologyandfurtherstudyinATfailureanalysis,thereal-timemonitorsystemandexpertsystemforfaultdiagnosisbyusingcomputertechnologyhastheimportantpracticalsignificancetoenhancetheproductreliabilityandthequalityofservice.ThepaperpresentedthepresentresearchsituationandtendencyofATinthreeaspects:torqueconverter,planetarygearboxandshiftingcontrolsystem.OnthebasisofanalyzingtheelementarystructureandfunctionofmechanicalsystemandhydrauliccontrolledsystemofAT,carriedoutthefailureanalysisofAT.ThentheAMESimmodelofATisestablishedandthequalitativesimulationisconducted.Theresultofsimulationvalidatedtheresultoffailureanalysis.Onthebasisoffailureanalysis,establishedthefaultdatabase.Finally,thesoftwarenamedATFDTforATfaultdiagnosisisprogrammedbyIVusingVisualBasicandAccess.Themainresearchworksarefocusedonthefollowingaspects:1.FailureanalysisforAT.HydrauliccontrolledsystemofATisdividedintotheoilpressuresupplying,regulatingandflowcontrolsubsystemtheshiftingcontrolsubsystemtheshiftingqualitycontrolsubsystemandthetorqueconvertercontrolsubsystemaccordingtothefunctionsofdifferentsubsystems.Theconfigurationandfunctionofthesefoursubsystemsareanalyzed.Thenfailureanaysisforhydrauliccontrolledsystemiscarriedout.Inviewofthelogicalitythatshiftingcontrolsubsystemhas,thelogicmathematicalmodelandstructurefunctionforfailureanalsysisestablished.Inconsiderationoftheflawofsinglefailuremodeanalysis,multiplefailuremodesanalysisbasedonRPNisproposed,whichcansolvethecontradictionbetween‘combinationexplosion’andmissingofsomeimportantinformationoffailure.2.ModelingofATinAMESim.StudyonqualitativesimulationforsomeperformanceparametersofATiscarriedout.TwocasesonqualitativesimulationwhenthetypicalpartworksnormallyandpartisdisabledareresearchedbyusingbatchrunfunctionofAMESim.Failureanalysisisvalidatedbycomparedwithresultsofsimulation.3.Combinationoftestingmethod.OnthebasisofanalyzingthecommonlyusedtestingmethodforATfaultdetectionandthefunctionofshiftingelements,obtainedthatreasonablelogicalcombinationoftestingmethodcanreducejudgementscopeofshiftingexecutorskid.Ithadthevitalsignificancetoanalyzingskidofshiftingelement.4.Failurediagnosissoftwareforautomatictransmissionisdesignedpreliminary.ClassifiedtheATfailureaccordingtothedifferentClassifiedprinciple.DesignedthefailurediagnosticflowforAT.ThesoftwareforfailurediagnosisisprogrammedbyusingVisualBasicandAccess.KEYWORDS:automatictransmission(AT),failureanalysis,hydrauliccontrolledsystem,failurediagnosisVIII1-1..................................................31-2................................................31-3CR-CR....................................41-4CR-CR....................................41-5..............................51-6................................62-1..........................132-2.......................................152-3.........................................162-4...................................................162-51-2...............................................172-62-3...............................................182-73-4...............................................182-8.........................................212-9.................................223-1AMESim..........................263-2AMESim............................................263-31-2AMESim........................................273-42-3AMESim........................................273-53-4AMESim........................................273-6AMESim....................................283-7AMESim....................................283-84T65EAMESim..................................293-9...................................303-10..................................303-11....................................................313-12..................................................313-13......................................323-14IC...........................................333-152C...........................................333-16..............................................34IX3-17.........................................