基于H_∞鲁棒控制原理的电动助力转向系统研究  

Steering system of electric power assist based on H_∞ Robust control

作　　者：邱明[1] 杨家军[1] 刘照[1] 叶耿[1] 

机构地区：[1]华中科技大学机械科学与工程学院

出　　处：《华中科技大学学报（自然科学版）》2002年第12期71-73,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

摘　　要：针对汽车电动助力转向系统是一个非线性的多输入多输出系统的特点 ,提出了H∞ 鲁棒控制方法 .首先对电动助力转向系统的动力学模型进行不确定性分析 ;然后建立了系统状态空间方程和增广被控对象矩阵 ;在此基础上用H∞ 方法极小化系统中各种干扰对被控输出的影响 ,最后通过计算机模拟的结果表明 。Aimed at the nonlinear MIMO system EPAS, the H ∞ Robust Control method was employed to design controller. The uncertainty analysis of the EPAS was introduced. The state space formulation and the extended controlled object matrix were determined. Based on this matrix, the H ∞ method was introduced to minimize the effect of disturbances on outputs. The program for designing the robust controller was given. The simulation results show that the controller improves the performance of EPAS and its robustness.

关 键 词：电动助力转向系统 鲁棒稳定性 H∞方法 鲁棒控制器 汽车 

分 类 号：U463.4[机械工程—车辆工程]