主动悬架H_2/广义H_2输出反馈控制  

H_2/generalized H_2 output feedback control for active suspensions

作　　者：陈虹[1] 马苗苗[1] 孙鹏远[2] 

机构地区：[1]吉林大学控制科学与工程系,吉林长春130025 [2]一汽技术中心,吉林长春130025

出　　处：《控制理论与应用》2007年第5期790-794,共5页Control Theory & Applications

基　　金：国家自然科学基金资助项目(60374027);教育部新世纪优秀人才支持计划资助项目;吉林大学"985"基金资助项目

摘　　要：本文提出了一种主动悬架控制的H2/广义H2输出反馈控制方法.依照国际标准ISO2631.3选择垂直和俯仰加速度的频率加权.根据路面干扰谱特征,选用H2范数作为乘坐舒适性的指标,广义H2范数描述轮胎接地性等时域约束要求.在多目标控制框架下,将输出反馈控制器的设计转化为求解LMI优化问题.基于半车模型,给出了输出反馈主动悬架系统的频域分析和时域仿真.This paper suggests an H2/generalized H2 output feedback control approach for active suspension control. Frequency-dependent weights of heave and pitch accelerations are determined according to ISO2631.3. In terms of the ground disturbance power spectral density, the H2 norm is used to describe the requirement for ride comfort and the generalized H2 norm is adapted to capture time-domain constraints such as good road holding. In the multi-objective control framework, the feedback controller can be designed by solving an LMI optimization problem. Based on a half-car model, analysis and simulation results of the designed output feedback active suspension are presented.

关 键 词：主动悬架 多目标控制 输出反馈 H2/广义H2 LMI优化 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]