电动助力转向系统的模糊自调整PD控制

Study on fuzzy self-tuning PD control of electric power steering system of automobile

在对汽车电动助力转向系统(EPS)的结构及其动力学性能分析的基础上,构建出系统模型,提出性能较好的模糊自调整PD控制策略,并进行多环境仿真研究 仿真结果表明,基于模糊自调整PD控制策略的EPS比传统PD控制具有更好的助力特性和抗干扰能力 为验证理论分析和仿真计算结果,进行了EPS装置的台架试验

Through analyzing the structure and dynamic characteristics of an Electrical Power Steering System (EPS), the EPS model and fuzzy control scheme based on self-tuning PD controller are established. Simulation results show that the improved self-tuning PD fuzzy controller has more satisfactory steering characteristics and the ability of resisting disturbance than the conventional PD controller. To evaluate the model, an experiment with EPS device is carried out on the test bed. The results show that the theoretical analyses and simulations agree with the experiment.