车辆主动悬架设计的约束H_∞控制方法  

Constrained H_∞ control method for active suspensions of vehicles

作　　者：宋刚[1,2] 吴志刚[1] 林家浩[1] 

机构地区：[1]大连理工大学运载工程与力学学部工业装备结构分析国家重点实验室,大连116023 [2]重庆交通科研设计院结构动力工程所桥梁工程结构动力学国家重点实验室,重庆400067

出　　处：《计算力学学报》2010年第2期196-201,共6页Chinese Journal of Computational Mechanics

基　　金：国家自然科学基金(10632030;10472023)资助项目

摘　　要：针对线性离散时间系统,研究其时域硬约束下的H∞输出反馈控制问题。假定外界扰动能量有限,基于线性矩阵不等式处理方法,提出并证明了时域硬约束下H∞输出反馈控制器存在的充分条件,并应用于车辆主动悬架设计。四分之一车辆模型数值仿真结果表明,即使车辆模型参数存在不确定性,本文提出的控制器在提高车辆乘坐舒适性的同时,仍能很好地兼顾车辆的其他性能要求。The problem of H∞ output feedback control for linear time-discrete systems with time-domain hard constraints is considered. With the assumption of disturbance energy being bounded, a constrained H∞ output feedback control strategy is proposed based on linear matrix inequality technology and suffi- cient conditions for the existence of such a controller are derived. The proposed constrained H∞ control scheme is applied to active suspensions. Simulation results for a quarter car model show that whether the variations of the vehicle model parameters exist or not, the constrained H∞ controller can achieve a promising improvement on ride comfort, while keeping suspension strokes, dynamic tire loads and control forces within given bounds.

关 键 词：主动悬架 时域硬约束 H∞控制 输出反馈 线性矩阵不等式 

分 类 号：TP271[自动化与计算机技术—检测技术与自动化装置]