联合工况的车辆动力学仿真

建立了整车的模型,用Matlab软件对车辆在不同车轮转角、不同车速及不同制动力矩情况下的动力学进行了仿真。仿真结果表明:随着车轮转角及车速的增大,车辆横摆角速度峰值、横向速度峰值增大;过大的制动力矩将使车辆横向侧滑加剧及使横摆角速度峰值变大,车辆在联合工况下的稳定性变差。仿真为车辆在联合工况下的建模和控制提供了参考。

Vehicle Dynamic Simulation under Union Condition

The full vehicle model was established. The dynamics of the vehicle under different steering angle, different velocity and different braking torque was simulated with Matlab. The results show that the top value of the yaw rate and the top value of the lateral velocity get enlarged with the increasing of the steering angle and the velocity of the vehicle. Too much braking torque makes the lateral slip aggravated and the top value of the yaw rate increased, and leads the stability of the vehicle under union condition getting worse. The simulations provide reference for vehicle modeling and control under union condition.