1、中國(guó)農(nóng)業(yè)大學(xué)博士學(xué)位論文汽車操縱穩(wěn)定性虛擬試驗(yàn)系統(tǒng)的研究姓名：王樹鳳申請(qǐng)學(xué)位級(jí)別：博士專業(yè)：車輛工程指導(dǎo)教師：余群2002.5.1AbstractWiththedevelopmentofvirtualprototypingandvirtualrealitytechnologythevehiclevirtualexperimentsystemisputforwardWithvirtualenvironmentsimulatecomplic
2、aterealenvironmentinvirtuaIenvironmentuserscanCOOtrOJthevehicleanddoexperimentexperiencevehicleperformanceandacquirethesubjectiveresponseVehicleparametersaremodifiedandthevehicleperformanceisoptimizedComparedtothetraditi
3、onalvehicleexperiment，thevirtualexperimentcanbeeasilyrepeatandnoriskIthastimesaving，costcuttingandqualityimprovingadvantagesInthispaperthevehiclevirtualexperimentsystemisdesigned，virtualenvironmentiscreated，thehandlingst
4、abilityvirtualexperimentiSrealizedandthecomparisonbetweenvirtualexperimentandtealexperimentiScarriedoutThemainresearchachievementsareasfollows：First，thevirtualvehicleexperimentsystemisdesignedusingadvancedtechnologywhich
5、isopenness，extendableandreusableTwodifferentjmmersesystemsareanalyzed，withthehelpofhardware(GraphicsWorkstation，StereoVisionGlasses，Centreldevice)andsoftware(worldToolKit，VisualC6O)，aDesktophandlingstabilityviroaalexperi
6、mentsystemhasbeenSuccessdevelopedSecond，BasedonthecharacteristicofhandlingstabilityperformanceandtheSantanastructureTheparameter3DmodelofvehicleisSUCCESScreated，whichincludessuspension，steering，tireetcaccordingtothemecha
7、nismofADAMSclosed，loopcontrol，theClosedloopexperimentsatedesignedDynamicsimulationiSrealizedandthesimulatedataiSusedtealizevirtualexperimentThirdInordertosolvecomplicatecontroIof血evehiclemovementandtheseparationbetweenth
8、evehiclemovementandmodelthehierarchicalstructureofvirtualenvironmentiScreatedandthedataprocessmoduleisdevelopedusingobjectorientatedprogrammingmethodInordertoimprovetherealisticofsceneandrlottoaffecttherealtimeperformanc
9、e，themethodsoftexture，LOD(LevelofDetail)，InstanceareadoptedFourth，Inordertoanalyzevehicleperformancebetterthevehicle3Dmodel，parametersmeterandvirtualscenealecombinedViewpointchangeintalactivebehaviorcollisiondetectionare
10、madeDuringtheprocessofsimulation，userscallobservethevehicleindifferentdirection，obtaintheaccurateparametersofthemotionvehicleUsingAGCViewerGstereovisionsystemUSerscarlimmerseinthevirtualexperimentandexperiencethevehiclep
11、erformanceFinallytherealexperimentsofHandlingstability(suchaStheDoubleLaneChange，thePyloncourseSlalom)arecarriedOUtComparedwitlIthevirtualexperimenttheresultshowsthatthevirtuaIexperimentisconsistenttorealexperimentTheref
12、orethevirtualexperimentCanreflectrealexperimentSincethedevelopmentofvehiclevirtualexperimentsystemisalongtermprojectTheworkinthisthesisexplorestheprojectfeasibilityWiththedevelopmentofcomputersensortechnologyvirtualtechn