基于全工况模型的自动紧急制动系统及其控制策略研究

Research on Automatic Emergency Braking System and Its Control Strategy Based on All-operating-condition Model

针对车辆自动紧急制动系统(AEBS)安全性和舒适性的要求,文章设计了一种基于全工况模型的AEBS,其基于前方障碍物的静止、匀速和加速、减速3种工况,对安全距离与距离碰撞时间进行解耦;并提出了一种根据前车运动状态进行预警与制动的控制策略,其可自适应调整预警时间和距离。通过仿真和实车试验对本文所论述的AEBS进行验证,结果表明,基于全工况模型的AEBS能够有效预防紧急制动车辆发生碰撞危险,并可提前预警/制动,满足行业标准要求,具有工程应用前景。

To meet the requirements of rigorous safety,and ensure the comfort driving experience of the vehicle advanced emergency braking system(AEBS),this paper proposes an improved vehicle safety-warning and braking control strategy.Specifically,the strategy is designed based on the developed all-operating-condition model,which covers three conditions based on the static,uniform speed and acceleration and deceleration status of the front obstacle.Further,the strategy adjusts the warning time and safety distance self-adaptively according to the designed safety distance model and collision time model.The proposed strategy is verified through both simulation and real vehicle test.The results show that the strategy effectively prevents the collision risk of emergency braking vehicles,and make early warning/braking in advance.The test performance fully meets the requirements of industry standard,and the proposed AEBS provides an engineering application prospects.