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1、第45卷第8期机械工程学报Vol.45No.82009年8月JOURNALOFMECHANICALENGINEERINGAug.2009DOI:10.3901/JME.2009.08.203*车辆智能行驶主动避撞的虚拟实现11,211高峰杨新红徐国艳王江锋(1.北京航空航天大学交通科学与工程学院北京100191;2.河南科技大学车辆与动力工程学院洛阳471003)摘要:利用软件Creator创建含有道路的虚拟场景,在仿真软件Vega中加入场景和多个车辆模型,受控车辆car采用鼠标和键盘控制,其余车辆借助于PathTool工具
2、提前设置运动路径并编辑每段路径上赋予导航车辆的参数;基于建立的跟驰及更换行驶路线的安全距离模型,在VisualC++6.0平台下结合VegaAPI编程设计一个仿真程序;借助于VegaAPI函数动态获取各个车辆位姿及行驶参数,由安全距离模型计算出车间距动态安全阈值,判断虚拟场景中的车间距是否符合car安全直行、换道及超车的条件,若不符合即强制car减速甚至停车,同时执行界面中会不时给出提示,促使采取主动避撞的正确措施。结果表明在虚拟环境中较好地仿真了车辆的实际避撞过程,受控车辆处于一种主动安全行驶状态。关键词:主动避撞车间距安
3、全模型智能车辆虚拟实现中图分类号: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通安全状况日益恶化,智能运输系统(ITS)是目前解*0前言决道路交通安全问题的有效途径。先进的车辆控制和安全系统是ITS的构成之一,其体现的智能车辆[1-2]车辆的普及、全球城市化进程的加快