摘要
为了提高四轮独立驱动电动汽车的行驶稳定性,提出了一种基于控制分配的驱动力分配算法。该算法以满足车辆实时行驶轨迹和降低轮胎利用率为目标函数,通过相关约束条件对4个车轮的驱动力进行优化分配。在MATLAB/Simulink仿真环境下采用18自由度非线性整车模型对算法进行了仿真,并与常规四驱车辆进行了对比。结果表明,控制分配算法有效地提高了车辆稳定性。
To improve the driving stability performance of a four-wheel independent drive electric vehicle,a driving force distribution algorithm based on control allocation is proposed. The algorithm takes tracking of the real-time trajectory and minimization of the tire utilization rate as the objective function,and optimizes the driving forces of the four wheels through the relevant constraints. Under MATLAB/Simulink simulation environment and based on 18 DOF nonlinear vehicle model,the algorithm is simulated and the simulation results are compared to that of a traditional four-wheel drive vehicle. The results show that with the algorithm of control allocation the stability performance of vehicles is effectively improved.
出处
《机电一体化》
2018年第2期31-35,共5页
Mechatronics
关键词
四轮独立驱动
电动汽车
控制分配
稳定性
four-wheel independent drive
electric vehicle
control allocation
stability
