Fault-Tolerant Control for Markovian Jump Delay Systems with an Adaptive Observer Approach

Fault-Tolerant Control for Markovian Jump Delay Systems with an Adaptive Observer Approach
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采用自适应观测器方法的马尔可夫跳跃延迟系统的容错控制

DOI:
10.1007/s00034-016-0277-8
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发表时间:
2016-12
期刊:
Circuits, Systems, and Signal Processing
影响因子:
--
通讯作者:
付莎莎
付莎莎
中科院分区:
其他
文献类型:
--
作者:
陈力恒;黄显林;付莎莎

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研究了一类具有模态依赖区间时变时滞和Lipschitz非线性项的马尔可夫跳变系统的故障估计与容错控制问题。本文设计了一种新的自适应故障观测器来解决故障估计问题。所提出的观测器可以同时估计状态和故障,无论故障是时变的或常数的特征。基于故障估计,设计了容错控制器,使闭环系统稳定。通过一组线性矩阵不等式得到了观测器增益和容错控制器增益存在的充分条件。最后,数值例子说明了所提出的容错控制方法的有效性。
This paper investigates the problem of fault estimation and fault-tolerant control for a class of Markovian jump systems with mode-dependent interval time-varying delay and Lipschitz nonlinearities. In this paper, a new adaptive fault observer is designed to solve the problem of fault estimation. The proposed observer can estimate the states and faults simultaneously, whether faults are of time-varying or constant characterization. Based on the fault estimation, a fault-tolerant controller is designed to stabilize the closed-loop system. Sufficient conditions for the existence of the observer gain and fault-tolerant controller gain are got by a set of linear matrix inequalities. Finally, a numerical example is presented to illustrate the effectiveness of the proposed fault-tolerant control method.
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