【作者】 喻阳梅； 齐志权； 史宏松； 梁慧杰； 李光明；

【Author】 Yu Yangmei;Qi Zhiquan;Shi Hongsong;Liang Huijie;Li Guangming;School of Mechanical Engineering,Beijing Institute of Technology;

【机构】 北京理工大学机械与车辆学院；

【摘要】 自动紧急系统可实现在紧急情况下的自动避撞功能。车辆实际行驶过程中工况复杂,在不同路面条件、不同坡度载荷等情况下,自动紧急制动(AEB)阈值发生变化,容易出现制动不及时和误报情况。本文首先在不同载荷、坡度、路面摩擦系数等条件下,进行制动减速度估计,然后对AEB的不同场景进行识别,根据不同工况,采用基于期望加速度估计的安全距离算法,计算出预警、部分制动和全制动的安全距离,在Simulink和CarSim中进行仿真测验,根据制动过程响应及制动距离来判断避撞算法的避撞效果。结果表明,基于减速度估计的安全距离算法能够实现在不同工况和条件下的预警和制动避撞,具有良好的适应性和鲁棒性。更多还原

【Abstract】 The automatic emergency system can realize the automatic collision avoidance function in emergency situations.During the actual driving process of the vehicle,the working conditions are complicated.Under different road conditions,different slope loads,etc.,the AEB braking threshold changes,which is prone to untimely braking and false alarms.This article first estimates braking deceleration under different conditions such as load,slope,and road friction coefficient,and then identifies different scenarios of AEB.According to different operating conditions,a safe distance algorithm based on expected acceleration estimation is used to calculate the warning,The safety distances of partial braking and full braking are simulated in Simulink and CarSim,and the collision avoidance effect of the collision avoidance algorithm is determined according to the braking process response and braking distance.The results show that the safety distance algorithm based on deceleration estimation can achieve early warning and braking avoidance under different operating conditions and conditions,and has good adaptability and robustness.更多还原