超磁致伸缩式AEB系统纵向避撞算法及仿真验证  

Longitudinal Collision Avoidance Algorithm and Simulation Verification of Super Magnetostrictive AEB System

作　　者：刘振华 查竞舟 Liu Zhenhua;Zha Jingzhou

机构地区：[1]南昌大学共青学院,江西九江332020 [2]南昌航空大学科技学院,江西九江332020

出　　处：《时代汽车》2024年第20期183-185,共3页Auto Time

摘　　要：提出一种以超磁致伸缩致动器GMA为制动执行机构的超磁致伸缩式AEB(autonomous emergency braking system,自动紧急制动系统)系统,该系统能够实现车身轻量化、快速制动和主动制动的效果。对比了五种避撞算法在超磁致伸缩式AEB系统的作用下的纵向避撞效果。以碰撞时间来判断避撞效果的TTC算法;以制停后前后两车相对距离为避撞效果的4种安全距离算法:Mazda算法、Honda算法、Berkeley算法和SeungwukMoon算法。以均能实现车辆避撞为前提(车速为10~80km/h),将4种安全距离算法的前后两车相距最小安全距离d0值设置为18m。搭建PreScan/Simulink的联合仿真平台,对比五种算法的避撞效果。最终仿真结果表明,TTC算法避撞效果最佳。An ultra-magnetostrictive AEB(autonomous emergency braking system)system with GMA as the brake actuator is proposed,which can realize the effects of body lightweight,fast braking and active braking.The longitudinal collision avoidance effects of five collision avoidance algorithms under the action of the super magnetostrictive AEB system were compared.TTC algorithm for judging collision avoidance effect based on collision time.There are four safety distance algorithms that take the relative distance between the front and rear vehicles after stopping as the collision avoidance effect:Mazda algorithm,Honda algorithm,Berkeley algorithm and SeungwukMoon algorithm.On the premise that all vehicles can avoid collisions(the speed of the vehicle is 10~80km/h),the minimum safety distance d0 value of the front and rear vehicles of the four safety distance algorithms is set to 18m.A PreScan/Simulink co-simulation platform was built to compare the collision avoidance effects of the five algorithms.The final simulation results show that the TTC algorithm has the best collision avoidance effect.

关 键 词：超磁致伸缩致动器 超磁致伸缩式AEB系统 TTC算法 安全距离算法 联合仿真 

分 类 号：U46[机械工程—车辆工程]