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ID:36559982
大小:2.62 MB
页数:73页
时间:2019-05-12
《汽车悬架系统的振动特性分析与半主动控制方法研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、天津大学硕士学位论文汽车悬架系统的振动特性分析与半主动控制方法研究姓名:叶智超申请学位级别:硕士专业:振动与控制指导教师:贾启芬20070601ABSTRACTAtpresent,semi.activecontrolsuspensionsystemshavereceivedagreatdealofattentioninacademeandindustrialcirclestoimproveridecomfortandroadholdingandhandingstability.Thedamperw
2、ithdynamicallyvariabledampingpropertieslSoneofthekeyelementsforsemi.activesuspensionsystems.Magneto·rheologicalfluiddampershaverecentlyemergedasenablingtechnologyforimplrmentingsemi.activecontrolinvarietyofapplicationbecauseoftheirmechanicalsimplicity
3、,lowoperatingpowerrequirements,environmentalrobustness,anddemonstratedpotentialfordevelopingforcessufficientforapplications.Inthedissertation,astate.of-the.artsemi.activecontrolsuspensionsysteminwhichtheMRdampersareused雒thesemi.activecontrolactuatorsh
4、aSbeenproposedanddeveloped.Thetheoreticallyanalyticalandsimulationareconductedtocharacterizethedynamicalperformanceandtodevelopthesemi.activecontroltechnologyoftheMRdampingsemi.activesuspensionsystem.ThemainpartsincludedinthethesisareaSfollow:1.Arevie
5、wofthenonlineardynamicmodelingandsemi—acWecontrolofthevehiclesuspensionsystemsbasedonMRathomeandabroadWaSgiven,itpointsoutthathighdotsmodelingandminglecontrolmethodalecurrentorientationandtrend.2.Introducemanyparametermodelsofmagnetorheologicaldampers
6、,throughanalyzingSigmoidmodelusedinthetextnumerically,itrevealstheinfluenceoftheparameterstodamperpowerofmagnetorheologicaldamper.3.Bysineexcitement,theequationsof2一dofs—suspension—systemweresolvedbytheequilibrationtheory,thatwerevalidatedbynurnercalc
7、alculation。DynamicalcharactersintimeandfrequentyieldandtheinfluenceoftheSigmoidmodel’Sparameterswereanyzingwiththesuspension.Theinfluenceofthemajorstandardofthesuspensionsystem’scapabilitywasalsoanalyzingwiththesubmitpowerthatcanbecontrolled.ThebaSict
8、heoryofthecontrolsystemdesignwassuppliedowingtotheanalyseofnonlinearvibrationmechanisminthesemi-activesuspensionsystems.4.Buildingasemi.activenonlinear8-dofsintegritysuspensionsystemmodel,whichsimulatingtherunontheroadrealitilyandthe也eridecomf
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