基于Simulink四轮车辆模型ABS仿真研究

Study on Simulation of ABS of Four-wheel Vehicle model based on Simulink

通过Simulink建立了ABS仿真模型,模拟了4独立通道制动系统的四轮车辆模型在高附着路面上的制动过程。在四轮车辆模型建模中考虑到车辆实际制动时轴荷转移的情况,采用PID作为ABS控制策略。通过仿真,得到制动时车速、轮速、滑移率、制动距离随时间的变化曲线。通过与无ABS时的相应曲线进行对比,可以看出有ABS作用时可以有效缩短制动距离和制动时间。

ABS Simulation model was based on Simulink,simulating the braking process of four-wheel vehicle model of four independent channes-braking system on the high adhesion road.The transfer of gravity center in braking was taken into account when establishing the four-wheel vehicle model and using PID as ABS control strategy.The curve of vehicle velocity,wheel velocity,slip and braking distance changing with time was obtained by simulation.Compared with no ABS,it can be seen that ABS has effect on decreasing braking distance and braking time.