磁流变制动器多领域仿真优化设计与研制

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1、杭州电子科技大学硕士学位论文ABSTRACTMagnetorheologicalfluidbrakeisanewbrake-by-wireresultingfromtheresearchofx-by-wiresystem.Thebrakingtorqueisgeneratedbythenewintelligentmaterialmagnetorheologicalfluid.MagnetorheologicalfluidcanachievetransformationbetweenNewtonianfluidstatesemi-solidorsolidstateandviceversaunde

2、rtheappliedmagneticfield,andexhibitcontrollableyieldstrength.Sincethemagnetorheologicalbrakeiscontrolledbythecurrent,theyareabletoimprovetobrakeresponsespeed,therebyincreasetrafficsafety.Magnetorheologicalfluidsanddeviceshasmadegreatprogress,butitstillencountersmanydifficultiesandshortcomingsuptonow

3、.Therefore,itsapplicationneedsfurtherresearch.Thispaperfocusesondisk-typemagnetorheologicalbrakeusedinmicrocarsandlaunchesastudyofthefollowingcontent.First,itsummarisestheresearchanddevelopmentofmagnetorheologicalfluidsanddevices,andfullyunderstandtherheologicalpropertiesandmechanismofMRF.Secondly,i

4、tanalysesthefunctionandcharacteristicsofmagnetorheologicalbrakeandcombineswiththeclassicaltheoryandmodelofMRFthenchosesamagnetorheologicalfluidwhichissuitableforvehiclebrake.Andaccordingtothose,thebrakingtorqueofmagnetorheologicalfluidbrakeisdeduced.Itcompletesthedesignofmagneticcircuitandelectricci

5、rcuitafterelaboratingthebasicprinciplesandconsiderationsofmagneticcircuit.Italsoselectsvariousmaterialsofthecomponent.Then,8majorparametersofmagnetorheologicalfluidbrakearedesigned.Magneticcircuitdesignprovesreasonablethroughmodeling,solvingandanalysingmagnetorheologicalbrakeprototypeusingsoftwareAN

6、SYS.Then,basedonAPDL,thispaperhasestablishedamathematicalmodelofmagnetorheologicalfluidbrakeoptimizationdesignandoptimizedforsolvingintheANSYS.Comparedwiththeinitialdesign,theresultsofoptimaldesignismorereasonableandthenpointoutthatthemaincoolingmethodofbrakeisair-cooled.Basedontheoptimalresults,mag

7、netorheologicalfluidbrakeisdesignedandmanufactured.Finally,inordertoverifythedesignperformanceofmagnetorheologicalfluidbrake,amagnetorheologicalfluidbrakeperformancetestbenchwasdesignedandbuilt.Andthe