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。
A virtual scene including road is constructed by using software Creator, the scene and several vehicle models are added to the simulation software Vega, the car being controlled is operated by mouse and keyboard, other model vehicles＇ paths are set in advance and all kinds of parameters relating to navigators in every segment are edited in Path Tool; based on the established following and changing route distance safety models, a simulation program is created by Vega API in Visual C＋＋ 6.0. Every vehicle＇s posture and running parameters can be acquired dynamically by virtue of Vega API functions, a dynamic threshold of safety distance between vehicles can be calculated, then it is possible to judge whether the model car can keep moving straight, change lane or overtake, if it cannot, it will be decelerated or stopped, prompt will appear on the execution interface at the same time, these help taking correct measures actively to avoid collisions. Results show that the process of vehicles＇ real avoiding collisions is better simulated in the virtual circumstance; the car being controlled is in an active safety running state.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2009年第8期203-209,共7页
Journal of Mechanical Engineering
基金
高等学校博士学科点专项科研基金资助项目(20070006011)
关键词
主动避撞
车间距安全模型
智能车辆
虚拟实现
Active avoiding collision Model of safety distance between vehicles Intelligent vehicles Virtual realization
