基于磁流变阻尼器的车辆半主动控制

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1、西南交通大学硕士学位论文基于磁流变阻尼器的车辆半主动控制姓名：丁海涛申请学位级别：硕士专业：车辆工程指导教师：王开文20080601西南交通大学硕士研究生学位论文第1I页AbstractThesuspensionsystemiSacriticalcomponentthatcaninfluencethevehicularperformance．Theintelligentsuspensionsystemhasreal—timecontrolaccordingtotheroadsurfaceconditionsandthestateofvehicle’Smotio

2、n．Itsadoptionisanimportantapproachtoimprovingcomfortandsecurity．Magnetorheological(MR)semi—activesuspensionappliesMRtechnologytOcarryoutthereal-timecontrolofitsdamp．Duetoitsgoodcontrollability,widedynamicrange，rapidresponsespeed，lowoperatingpowerrequirementandcomparativelysimplestru

3、cture，MRsemi-activesuspensionhasbecomeoneofthecentralresearchsubjectsinintelligentsuspensionfield，andhasalsoreceivedconsiderableattention．Inthispaper，themethodsanddynamicalcharacteristicsofMRdamperareappliedtostudythesuspension，thecontrolstrategiesandthecontrolsystem’Sdesign．Themain

4、contributionsofthedissertationincludethefollowing：1．Thepaperexpoundsthesignificanceoftheintelligentsuspensionresearchreviewsitshistoryanddevelopment，summarizesthepresentsituationandexistingproblemsofMRfluids，MRdampersandMRsemi-activesuspensionandputsforwardthemainworkaimedattheprese

5、ntproblemsofvehicularMRsemi-activesuspension．2．Basedontheanalysisofnonlinearcharacteristicsofvehicularsuspensionsystem，thisdissertationdealswiththesemi-activesuspensioncontrolOilbasisofproposedMagnetorheological(MR)dampermodelandthetwo—degreeoffreedom(2一DOF)1／4quarter-vehiclemodel．T

6、heMRsemi-activesuspensionmodelisestablished．ThemethodofcontrolstrategyOndifferentialgeometrytheoryandfuzzycontrolstrategyisexpounded．Thedifferentialgeometrycontrollerandthefuzzycontrolleraredesigned．MRsemi-activesuspensionsimulationsystemisestablishedbyusingMatlabsoftwareanditscorre

7、spondingtoolboxes．Afteradoptingtheabovecontrolstrategies，thetimedomainresponseofsemi—activesuspensionareanalyzedbyusingnumericalsimulation．The西南交通大学硕士研究生学位论文第1II页comparisonandevaluationbetweenthetwodifferentcontrolstrategiesarecarriedoutaccordingtothecontroleffects．3．Comparedwithtwo

8、semi．activesuspensi