新的轮式驱动电动车电子差速控制算法的研究

A Novel Electronic Differential Algorithm for In-wheel Motor Driven EV

提出了一种用于轮式驱动电动车的电子差速控制算法,将转弯时转矩分配计算和基于车轮滑移率的开关控制相结合,对车辆左右驱动轮输入不同的转矩,同时根据轮胎偏转角的变化率确定目标滑移率。仿真研究证明,与采用机械差速器相比,新的电子差速控制系统鲁棒性好,车辆的驾驶更安全平稳,并能获得更优异的转向性能和更快的响应特性。

According to the characteristics of in-wheel motor driven electric vehicle, a novel electronic differential algorithm is developed, in which the corresponding torque distribution scheme is combined with the wheel slip based bang-bang control. Each wheel has different torque, and the object slip is determined by the changing rate of tyre deflection angle. The results of simulation validate that the novel electronic differential using the proposed scheme has good robustness, better cornering performance and quicker response, making vehicle operation safer and more stable, compared with traditional mechanical differential.