Observer-based event-driven fault-tolerant control for a class of system with state-dependent uncertainties. (English) Zbl 1366.93346
Summary: The method of designing an event-driven observer-based fault-tolerant controller is addressed for a state-dependent system with external disturbance and fault in this paper. An event-driven criterion is proposed to determine the updating of the controller based on the state of the Luenberger-type state-dependent observer. As a result, communication resources can be saved significantly while the desired \(H_\infty\) performance is preserved. The observer error closed-loop system is rewritten as a time-varying delay system. By employing a state-dependent integral function to be a Lyapunov function candidate, the error system is proved to be asymptotically stable. The observer gain, the controller gain and the event parameters in the event condition can be co-designed and obtained in terms of solution to a set of Linear Matrix Inequalities (LMIs). Finally, a numerical example and the tunnel diode circuit model are shown that the proposed method is effective, and the simulation results can reflect that the event-triggered scheme can lead to a larger release period than time-triggering scheme.
MSC:
| 93C65 | Discrete event control/observation systems |
| 93B07 | Observability |
| 93B35 | Sensitivity (robustness) |
| 93C41 | Control/observation systems with incomplete information |
| 93C15 | Control/observation systems governed by ordinary differential equations |
Keywords:
state-dependent uncertainty; event-driven criterion; robust fault-tolerant control; Luenberger-type observer; integral functionReferences:
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