AEB系统的CarMaker/Simulink联合仿真研究

Co-Simulation study of CarMaker/Simulink for AEB system

针对汽车AEB系统,提出了一种基于碰撞时间的控制算法。研究选取车辆碰撞时间作为控制变量,通过输出的期望减速度来确定各车轮上的制动力矩,从而提高车辆的纵向行驶安全性。为保证研究的准确性,采用CarMaker/Simulink联合建立虚拟仿真环境,并选取C-NCAP(2018版)AEB系统的追尾评分场景进行验证。结果表明:试验较好地验证了AEB系统算法的有效性;根据碰撞时间可以准确预判危险程度,使车辆保持在合适的安全车距范围内。

Aiming at automobile AEB system,a control algorithm based on time-to-collision is proposed.The vehicle time-to-collision is selected as the control variable,and the braking moment of each wheel is determined by the expected deceleration of the output,so as to improve the longitudinal driving safety of the vehicle.In order to ensure the accuracy of the research,CarMaker/Simulink is used to establish a virtual simulation environment,and the C-NCAP(2018 version)AEB system for rear-end collision was selected to verify the scoring scenario.The results show that the effectiveness of AEB system is well verified by experiments,and the dangerous degree can be predicted accurately according to the time-to-collision,therefore the vehicle can be kept within the appropriate safe distance.