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1、杭州电子科技大学硕士学位论文AbstractMagnetorheologicalbrake(MRBrake)isanewtypeofbrakebasedonanewtypeofmaterial--magnetorheologicalfluid(MRFluid).WhenMRfluidisundertheeffectoftheexternalmagneticfield,itcanbeconvertedfromaNewtonianfluidstatetoaBinghamplasticstate,andtheconversionisquick,continuousandreversible.B
2、ychangingthecurrentofexcitationcoil,theappliedmagneticfieldcanbechangedandinthiswaythebrakingtorquecanbecontrolled.SoMRbrakecanbewellintegratedwithvehiclex-by-wiresystems.Astheautomotiveelectroniccontroltechnologyisdeveloping,comparedwithconventionalhydromechanicalbrake,MRbrakehastheadvantagesofs
3、implestructure,easytocontrolandresponsefast.Ithasaverygoodprospectfordevelopment.Fortheconstructionofmulti-domainmodels,theusualwayoftraditionalsinglefieldsimulationmethodsistomodeleachdomainseparatelybydifferentsoftwaresandthenintegratethem,whichcanleadtopoormodelsystemcouplingdegreeandlowsimula
4、tionaccuracyandefficiency.Thiscannotbequalifiedfortheunifieddesignandanalysisofcomplexelectromechanicalsystems.However,inthispaper,themulti-domainunifiedmodelingandsimulationmethodwasfirstlyappliedtomodelingMRbrakewhichisatypicalcomplexelectromechanicalsystem.Andbasedonthemodel,controlparametersw
5、ereoptimizedbyRSM.Theproblemsbroughtbysoftwaresintegratingcanbeovercame,whichisaninnovativemethod.Inthispaper,theanti-lockbrakingsystem(ABS)andsinglediscMRbrakewerecombined,usingmulti-domainunifiedmodelingmethod,themulti-domainunifiedmodeloftheMRbrakewasbuilt.Aimingatitsperformanceanddesignparame
6、ters,themodelwassimulatedandoptimized.Intheprocessoftheoptimizationwork,theimplicitfunctionrelationbetweenthevariablesandtheoptimizationobjectivewasdetermined,andresponsesurfacemethod(RSM)wasusedtobuildtheobjectivefunction,thentheoptimizationmodelwasoptimizedatMWorksplatform.Themainworkofthispape
7、risasfollows:(1)ThedevelopmentandcurrentstatusofMRfluidandmagnetorheologicaldeviceweredescribed,thecharacteristicsoftraditionalmechanicalbrakesandbrakingperformanceindexweredescribed,multi-domainunifiedmodelingmethodan
