电动助力转向系统建模及动力学仿真分析

Modeling and dynamic simulation analysis of EPS

通过汽车电动助力转向系统(EPS)的结构及其动力特性分析,建立其数学模型,针对其本身是一个比较复杂的非线性随动系统,采用模糊控制理论,设计一种自适应模糊PD控制系统,并进行仿真研究。仿真结果表明,基于模糊PD控制的电动助力转向系统比传统PD控制具有更好的助力特性和抗干扰能力。

Analyzes Electric Power Steering system（EPS） by basing on dynamic characteristic and the structure of the EPS, builds math modeling and system simulation modeling. A new self-adjusted fuzzy control system is designed based on its non-line character. The simulation results show that the strategy is more effective in improving the pedormance of power steering and robusthess than the conventional PD controller.