Reliable control for nonlinear discrete-time systems with multiple intermittent faults in sensors or actuators

Liang Cao, Yuan Tao, Youqing Wang, Juan Li and Biao Huang

International Journal of Systems Science, 2017, vol. 48, issue 2, 302-315

Abstract: This study proposes a fault-tolerant control method for stochastic systems with multiple intermittent faults (IFs) and nonlinear disturbances, and both sensor and actuator faults are considered. The occurrence and disappearance of IFs are governed by Markov chain, and its transition probabilities are partly known. Hence, the faulty system can be described by a Markovian jump system (MJS). In order to ensure that the MJS is stochastically stable and satisfies H∞ performance index, mode-dependent output feedback controllers are modelled using linear matrix inequalities. Numerous sufficient conditions for stochastic stability are obtained on the basis of Lyapunov stability theory. Finally, the effectiveness of the developed method is evaluated on the three-tank system.

Date: 2017
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DOI: 10.1080/00207721.2016.1179819

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