一类带有执行器故障不确定线性系统的自适应H_∞控制  

Adaptive H_∞ control for a class of uncertain linear systems with actuator failures

作　　者：彭晓易 武力兵[1] 

机构地区：[1]辽宁科技大学理学院,辽宁鞍山114051

出　　处：《辽宁科技大学学报》2017年第4期292-297,共6页Journal of University of Science and Technology Liaoning

基　　金：国家自然科学基金项目(61673098)

摘　　要：针对一类带有不匹配外部扰动、非线性参数不确定性和执行器故障的线性系统,提出一种基于自适应容错技术的H_∞控制方案。所设计的变增益容错控制器既可以对外部扰动具有良好的抑制作用,同时也可以有效补偿系统参数不确定和未知故障的影响,进而保证闭环系统具有期望的优化性能指标。飞行控制系统的数值仿真例子表明了所提出控制方法的有效性。In this paper,an adaptive H∞fault-tolerant control scheme for a class of uncertain linear systems with mismatching external disturbances,nonlinear parameter uncertainties,and actuator failures is proposed.By designing the corresponding adaptive controller,the effects of nonlinear parameter uncertainties,actuator failures and external disturbances can be eliminated and restrained simultaneously. Moreover,by using Lyapunov functions method,the designed controller can guarantee the asymptotic stability and the desired performance index of the closed-loop systems. Finally,numerical simulation example of flight control system is provided to show the efficiency of the proposed control method.

关 键 词：自适应控制 H∞控制 稳定性分析 飞行器模型 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]