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Adaptive fault-tolerant control of linear systems wit actuator saturation and L2-disturbances

ISSN号：2095-6983
期刊名称：《控制理论与技术：英文版》
时间：0
分类：TP273[自动化与计算机技术—控制科学与工程;自动化与计算机技术—检测技术与自动化装置] TP13[自动化与计算机技术—控制科学与工程;自动化与计算机技术—控制理论与控制工程]
作者机构：[1]Key Laboratory of Integrated Automation for the Process Industry, Ministry of Education, and College of Information Science and Engineering, Northeastern University, Shenyang Liaoning 110004, China, [2]School of Automation, Shenyang Institute of Aeronautical Engineering, Shenyang Liaoning 110136, China
相关基金：This work was partly supported by Program for New Century Excellent Talents in University （No.NCET-04-0283）, the Funds for Creative Research Groups of China （No.60521003）, Program for Changjiang Scholars and Innovative Research Team in University （No.IRT0421）, the State Key Program of National Natural Science of China （No.60534010）, the Funds of National Science of China （No.60674021） and the Funds of PhD program of MOE, China （No.20060145019）, the 111 Project （No.B08015）.

关键词：容错控制器, 执行器饱和, 线性系统, 自适应, 驱动器, 线性矩阵不等式, 智慧, 闭环系统, Actuator saturation, Linear systems, Adaptive control, Fault-tolerant control, Disturbance tolerance, LMIs, H-infinity control

中文摘要：

这篇论文学习与致动器浸透为线性时间不变的系统设计适应差错容忍的 H 无穷控制器的问题。靠近环的系统的骚乱忍耐能力被一个最佳的索引测量。一个适应 H 无穷表演索引的观点被建议描述靠近环的系统的骚乱变细表演。为经由州的反馈设计间接适应差错容忍的控制器的新方法为致动器差错赔偿被介绍。基于最终的差错的联机评价，适应差错容忍的控制器参数自动地被更新在系统上补偿差错效果。图案在线性矩阵不平等(LMI ) 的框架被开发在致动器的情况中接近靠近环的系统的表演，它能保证骚乱忍耐能力和适应 H 无穷浸透和致动器失败。一个例子被给说明设计方法的效率。

英文摘要：

This paper studies the problem of designing adaptive fault-tolerant H-infinity controllers for linear timeinvariant systems with actuator saturation. The disturbance tolerance ability of the closed-loop system is measured by an optimal index. The notion of an adaptive H-infinity performance index is proposed to describe the disturbance attenuation performances of closed-loop systems. New methods for designing indirect adaptive fault-tolerant controllers via state feedback are presented for actuator fault compensations. Based on the on-line estimation of eventual faults, the adaptive fault-tolerant controller parameters are updated automatically to compensate for the fault effects on systems. The designs are developed in the framework of the linear matrix inequality （LMI） approach, which can guarantee the disturbance tolerance ability and adaptive H-infinity performances of closed-loop systems in the cases of actuator saturation and actuator failures. An example is given to illustrate the efficiency of the design method.

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