Research on control system of electric power steering based on mixed sensitivity algorithm
基于混合灵敏度算法的电动转向控制系统研究*

This paper built the dynamic model of electric power steering (EPS) and designed the control block diagram of EPS.According the characteristic of the EPS,introduced the method of loop shaping control based on H∞ mixed sensitivity.Based on the analysis of S/T curves of singular values,proposed a kind of controlling method that the controller was concluded according to the closed-loop function of system constructed by parameters in frequency domain.Spectral analysis of EPS system and simulation with disturbances and parameters perturbation demonstrate that the method is concise and effective,and the controller has excellent robustness and robust stability.