中文摘要：

本文中提出了一种基于路面附着系数估计的自适应汽车纵向碰撞预警策略。首先建立了碰撞预警安全距离模型,分析了路面附着系数对碰撞预警策略的影响;接着给出了基于最小二乘法和斜率法的路面附着系数估算算法,可实现全滑移率工况的路面附着系数精确识别;在此基础上,建立了基于路面识别的汽车纵向碰撞预警策略;最后分别进行了Matlab/Simulink-Car Sim联合仿真和实车测试。结果表明,本文提出的预警策略可准确估算路面附着系数,并据此自适应调节碰撞预警策略,能够在不同工况下有效提高预警准确性和道路空间利用率。

英文摘要：

An adaptive vehicle longitudinal collision warning strategy based on road adhesive coefficient es- timation is proposed in this paper. Firstly a safety distance model for collision warning is established and the effects of road adhesive coefficient on the collision warning strategy are analyzed. Then an estimation algorithm of road ad- hesive coefficient is given based on both the least square method and the slope method, enabling the accurate esti- mation of road adhesive coefficient under all slip-rate conditions. On this basis, a vehicle longitudinal collision warning strategy based on road identification is proposed. Finally both Matlab/Simulink-CarSim co-simulation and real vehicle test are conducted. The results show that the warning strategy proposed can accurately estimate the road adhesive coefficient, adaptively adjust the collision warning strategy accordingly, and hence effectively enhance warning accuracy and road space utilization rate.