基于转速辨识的EPS阻尼控制策略的研究

A Research of Damping Control Strategy for EPS Based on Motor Speed Identification

将基于递推最小二乘算法的转速在线辨识方法引入电动助力转向系统中,以估计助力电动机的转速。利用估计转速结合车速,设计了相应的阻尼特性,提出了阻尼控制策略,并对转速辨识和阻尼特性进行仿真。结果表明,利用递推算法进行转速辨识成本低,可靠性、鲁棒性高;提出的阻尼控制策略有效可行。

A speed identification method based on recursive least square（RLS） algorithm is introduced into electric power steering（EPS） system for estimating the speed of EPS motor.By using the estimated motor speed,combined with vehicle speed,the corresponding damping characteristics are designed,the damping control strategy is proposed and the simulations on motor speed identification and damping characteristics are performed.The results show that the speed identification with RLS algorithm has low cost and high reliability and robustness,and the damping control strategy proposed is effective and feasible.