基于改进H∞算法的电动转向控制系统仿真研究  

Study on Simulation of Electric Power Steering Controller Based on Enhanced H∞ Algorithm

作　　者：陈慧鹏[1,2] 金国栋[2] 王君明[3] 陈立平[2] 

机构地区：[1]杭州电子科技大学,机械工程学院,CAD中心,杭州430074 [2]华中科技大学,机械科学与工程学院,CAD中心,武汉430074 [3]湖北工业大学机械学院,武汉430068

出　　处：《系统仿真学报》2011年第9期1915-1920,共6页Journal of System Simulation

基　　金：国家自然科学基金(60873106)

摘　　要：首先对电动助力转向系统(EPS)进行了建模、分析及合理的简化。根据该系统特性,选择基于H∞的控制方法。在对S/T奇异值曲线的深入观察和研究的基础上,提出一种根据系统频域关键参数先构造闭环函数然后反推出系统控制器的方法。EPS系统频谱分析及干扰和模型参数摄动下的仿真结果表明,该方法设计的控制器简单有效,具有很好的鲁棒稳定性和鲁棒性能。The analysis,modeling,simplifying were carried out with an electric power steering system.According the characteristic of the EPS,the method based on H∞ was introduced.Based on the analysis of S/T curves of singular values,a kind of controlling method was proposed 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.

关 键 词：电动助力转向 建模H∞控制 系统仿真 鲁棒控制 

分 类 号：U463.4[机械工程—车辆工程]