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1、第45卷第8期機(jī)械工程學(xué)報(bào)Vol.45No.82009年8月JOURNALOFMECHANICALENGINEERINGAug.2009DOI:10.3901/JME.2009.08.203*車輛智能行駛主動(dòng)避撞的虛擬實(shí)現(xiàn)11,211高峰楊新紅徐國(guó)艷王江鋒(1.北京航空航天大學(xué)交通科學(xué)與工程學(xué)院北京100191;2.河南科技大學(xué)車輛與動(dòng)力工程學(xué)院洛陽(yáng)471003)摘要:利用軟件Creator創(chuàng)建含有道路的虛擬場(chǎng)景,在仿真軟件Vega中加入場(chǎng)景和多個(gè)車輛模型,受控車輛car采用鼠標(biāo)和鍵盤控制,其余車輛借助于PathTool工具
2、提前設(shè)置運(yùn)動(dòng)路徑并編輯每段路徑上賦予導(dǎo)航車輛的參數(shù);基于建立的跟馳及更換行駛路線的安全距離模型,在VisualC++6.0平臺(tái)下結(jié)合VegaAPI編程設(shè)計(jì)一個(gè)仿真程序;借助于VegaAPI函數(shù)動(dòng)態(tài)獲取各個(gè)車輛位姿及行駛參數(shù),由安全距離模型計(jì)算出車間距動(dòng)態(tài)安全閾值,判斷虛擬場(chǎng)景中的車間距是否符合car安全直行、換道及超車的條件,若不符合即強(qiáng)制car減速甚至停車,同時(shí)執(zhí)行界面中會(huì)不時(shí)給出提示,促使采取主動(dòng)避撞的正確措施。結(jié)果表明在虛擬環(huán)境中較好地仿真了車輛的實(shí)際避撞過程,受控車輛處于一種主動(dòng)安全行駛狀態(tài)。關(guān)鍵詞:主動(dòng)避撞車間距安
3、全模型智能車輛虛擬實(shí)現(xiàn)中圖分類號(hào):U463.1VirtualRealizationofActiveAvoidingCollisionofVehicles’IntelligentRunning11,211GAOFengYANGXinhongXUGuoyanWANGJiangfeng(1.SchoolofTransportationScience&Engineering,BeihangUniversity,Beijing100191;2.Vehicle&MotivePowerEngineeringCollege,HenanUni
4、versityofScience&Technology,Luoyang471003)Abstract:AvirtualsceneincludingroadisconstructedbyusingsoftwareCreator,thesceneandseveralvehiclemodelsareaddedtothesimulationsoftwareVega,thecarbeingcontrolledisoperatedbymouseandkeyboard,othermodelvehicles’pathsaresetinadv
5、anceandallkindsofparametersrelatingtonavigatorsineverysegmentareeditedinPathTool;basedontheestablishedfollowingandchangingroutedistancesafetymodels,asimulationprogramiscreatedbyVegaAPIinVisualC++6.0.Everyvehicle’spostureandrunningparameterscanbeacquireddynamicallyb
6、yvirtueofVegaAPIfunctions,adynamicthresholdofsafetydistancebetweenvehiclescanbecalculated,thenitispossibletojudgewhetherthemodelcarcankeepmovingstraight,changelaneorovertake,ifitcannot,itwillbedeceleratedorstopped,promptwillappearontheexecutioninterfaceatthesametim
7、e,thesehelptakingcorrectmeasuresactivelytoavoidcollisions.Resultsshowthattheprocessofvehicles’realavoidingcollisionsisbettersimulatedinthevirtualcircumstance;thecarbeingcontrolledisinanactivesafetyrunningstate.Keywords:ActiveavoidingcollisionModelofsafetydistancebe
8、tweenvehiclesIntelligentvehiclesVirtualrealization通安全狀況日益惡化,智能運(yùn)輸系統(tǒng)(ITS)是目前解*0前言決道路交通安全問題的有效途徑。先進(jìn)的車輛控制和安全系統(tǒng)是ITS的構(gòu)成之一,其體現(xiàn)的智能車輛[1-2]車輛的普及、全球城市化進(jìn)程的加快