摘要
汽车纵向主动避撞系统应能根据路面状态的突变自动地调整安全距离以提高系统的可靠性。在魔术公式的基础上,给出了基于车轮动力学参数识别路面的方法,建立了车辆动力学模型,分别对汽车行驶在高、低附着系数路面和组合路面上避撞系统的工作进行了模拟试验。试验结果表明,识别的路面状态与实际路面一致性良好,具备路面识别系统的汽车纵向主动避撞系统对路面具有自适应性,其安全性高于没有路面识别系统的避撞系统,从而有效避免了变路面上汽车碰撞的发生。
Vehicle forward collision avoidance system must be able to regulate the safety distance according to the abrupt variation of road automatically to promote the reliability when road varied.A road identification approach was proposed based on wheel dynamics parameters and vehicle dynamics model was established with the application of Magic Formula model.Then simulation tests were conducted on the high and low adhesion coefficient road as well as combination road respectively,which results showed that the identified road was in good agreement with the given road,the vehicle forward collision avoidance system with road identification system was adaptive to the varying road,thus its safety was higher than those without it and collision of vehicles on varying road can be avoided.
出处
《机械设计与制造》
北大核心
2011年第11期114-116,共3页
Machinery Design & Manufacture
基金
西华大学研究生创新基金(YCJJ201135)
西华大学人才培养与引进基金项目(R0920301)
关键词
避撞系统
路面识别
安全距离
数值模拟
Collision avoidance system
Road identification
Safety distance
Numerical simulation
