基于H_2/H_∞控制的汽车主动悬架被动容错控制  

Passive Fault-Tolerant Control for Vehicle Active Suspension System Based on H_2/H_∞ Control

作　　者：张丽萍[1] 弓栋梁 Zhang Liping;Gong Dongliang(Liaoning University of Technology, Jinzhou 121001)

机构地区：[1]辽宁工业大学,锦州121001

出　　处：《汽车技术》2017年第11期44-49,共6页Automobile Technology

基　　金：辽宁省科技厅软科学研究计划项目(JP2016017);辽宁省教育厅优秀人才第二层次项目(LJQ2014065)

摘　　要：针对悬架系统的刚度、阻尼参数摄动和作动器增益损失故障,考虑悬架系统的时域硬约束,运用线性矩阵不等式(LMI)技术,提出了一种基于H_2/H_∞状态反馈控制的主动悬架被动容错控制策略。以半车模型为例,设计了主动悬架的被动容错控制器。分别在主动悬架系统无故障和故障模式下进行了仿真分析,结果表明,所提出的控制策略对悬架系统的故障具有鲁棒性,能够提升其乘坐舒适性。Aiming at the suspension system stiffness and damping parameter perturbation and actuator gain loss fault, considering the time domain hard constraint of the suspension system, using a Linear Matrix Inequality （LMI） technique, a passive fault - tolerant control strategy for active suspension based on H2/H∞ state feedback control is proposed. Taking the half-car model as an example, a passive fault-tolerant controller for active suspension is designed. The simulation analysis is carried out in the active suspension system fault free and fault mode; the simulation results show that the proposed control strategy is robust to the fault of the suspension system and can improve its ride comfort.

关 键 词：主动悬架 H2/H∞控制 模型不确定 作动器故障 被动容错控制 

分 类 号：U463.33[机械工程—车辆工程]