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1、VirtualRealityinCarProductionUsinghigh-performancecomputers,theautomobilemanufacturerisnowinapositiontosimulatemanystepsinthedevelopmentprocessrealisticallyonthescreenbeforebuildingelaboratemodelsandusingexpensiveteststands.Andthisoptiontoworkwithcomputergeneratedsimulatio
2、nsisnotlimitedtoconventionalscreendisplaysalone.VirtualrealityusedbytheBMWGroupfromtheinitialdevelopmentofdesignconceptsallthewaytoplanningproductionprocessesisamostefficientandinnovativesimulationtechnology.VirtualrealityknownasVRforshortisalsoreferredtoas“realitysimulate
3、dbythecomputer”orasan“artificialworld”.Tocreatethisworld,high-performancecomputersconverthugeamountsofdataintospatial,three-dimensionalimages,givingtheobserverthesamesensoryperceptionasinreality–thevirtualworldlooks“real”.Indeed,suchavirtualworldisabletoreplace“reallife”in
4、manyareasandapplications,particularlyifitservestosimulateonlyapreciselydefinedexcerptofreality.ThevirtualfutureoftheautomobilehasalreadybegunThecyberspaceworldhasalreadydevelopedfromsimplegamestoaveryseriousandmeaningfulindustrialtool.Theuserisabletomovearoundinavirtualenv
5、ironment,interactingwithandultimatelyevenshapingthe“world”aroundhim.ModernVRstudioshavewhatiscommonlycalledaCaveAutomatedVirtualEnvironmentorCAVEforshort–an“electroniccave”inwhichtheobserverissurroundedbyuptosixwallspresentingpicturesprojectedinrealtime.Wearingspecialglass
6、es,theuserthenreceivesaspatial,threedimensionalimpressionofhisvirtualenvironment.Fromtheinitialideatotheseriesproduct–fasterandmoreefficientthaneverbeforeVirtualsimulationisindispensabletodayalsointheautomotiveindustry.Whileseveralprototypeshadtobebuiltinthepasttotestcompo
7、nentsinadvance,planners,designersandengineersnowworkononeandthesamedigitalmodel,optimizingthismodelonthescreenand,ifnecessary,transmittingmodeldataviadatalinessimultaneouslytolocationsallovertheworld.Thisreducesthecostofdevelopmentand,inparticular,speedsupthedevelopmentpro
8、cess,providingfastertimetomarket.AfurtheradvantageofVRisthattheuserisabletoassessdifferen
