电动助力转向系统回正控制策略研究

在分析电动助力转向系统回正模型的基础上,提出了电动助力转向回正控制算法。尝试直接采用扭矩信号作为转向盘转角估计的依据,并以此为基础提出不需配置转角传感器的回正控制策略。在matlab中建立了电动助力转向系统的模型,并利用Simulink工具箱对算法进行了仿真。仿真结果表明,所提出的回正控制策略能提高转向盘的回正性能,并为台架试验打下了基础。

Study on Return Control Strategy for Electric Power Steering System

In this paper,return model of electrical power steering system is analyzed,and a control algorithm is developed for electric power steering system.Based on the attempt of use torque signal as the gist of steering wheel angle estimation,a return control strategy that don't need steering angle sensor is developed.The author has build the EPS model with the use of Matlab,and apply Simulink tool box to simulate algorithm.The results show that return control strategy can improve returnability of sreering wheel,and make a good foundation for the bench test.