前车静止工况下转向和制动避撞方式对比研究

Contrastive study of steering and braking collision avoidance methods in static vehicle working condition

当前,汽车实现主动避撞的方式主要是通过制动。但在实际道路上,有的驾驶员可能会选择通过转向的方式来规避事故的发生。针对前车静止工况,首先对车辆制动和转向两种避撞方式的避撞过程进行分析,得出了关键参数之间的函数关系;然后通过该函数关系在MATLAB中编写脚本文件,使用仿真手段对比观察了2种避撞方式在不同参数下的曲线变化,重点从车的最大制动能力和最大转向能力2个方面做了对比分析;最后得出了转向避撞和制动避撞在不同车速下的适应能力大小,为进一步研究转向和制动的关系提供了参考依据。

At present,the way to achieve active collision avoidance is mainly through braking.However,some drivers may choose to turn around to avoid accidents in reality.Aiming at solving the static condition of the vehicle in front of the vehicle,firstly,the collision avoidance process of the two kinds of collision avoidance modes of vehicle braking and steer.ing was analyzed,and the functional relationship between the key parameters was derived;then,the script file was writ.ten in MATLAB through this functional relationship,the simulation method was used to observe the changes of two kinds of avoidance modes under different parameters,with emphasis on the comparison and analysis of the maximum braking capacity and maximum steering capacity.At last,we got the adaptability of steering avoidance and brake avoidance at dif.ferent speeds,which provided a reference for a further study of the relationship between steering and braking.