车辆转向时制动防抱系统的仿真研究

Simulation study of the vehicle's anti-lock braking system in consideration of braking on crooked roads

考虑到车辆转弯制动时车轮法向载荷以及回正力矩的影响 ,建立了汽车弯道行驶的 8自由度整车模型。用该模型对车辆转弯制动时的车速与轮速的变化、制动器制动力矩的变化进行了计算机仿真。仿真结果表明 ,考虑车辆转弯特性的 ABS控制系统在弯道制动时取得了很好的控制效果 ,对开发和改进

Considering the influence of the wheel vertical load and the restoring moment of the vehicle running on crooked roads,the mathematic models of the vehicle's anti-lock braking system(ABS) are established,including the vehicle model of eight freedom degrees,the wheel model and the ABS control logic model.The simulation model of the ABS is set up with the software Simulink,and a simulation example presented.The changes of the vehicle speed,the wheel speed and the braking torque are simulated by the model.Simulation results show that with the presented ABS in which the vehicle's wheeling characteristics are considered,a good control result can be achieved on crooked roads.