Finite-horizon fault estimation for time-varying systems with multiple fading measurements under torus-event-based protocols. (English) Zbl 1426.93082
Summary: In this paper, the issue of the finite-horizon \(H_\infty\) fault estimation is dealt with for a class of discrete time-varying systems subject to randomly occurring faults and multiple fading measurements. The missing phenomena may occur in a random way from different sensors, which is represented by an individual stochastic variable meeting a certain probability distribution. Furthermore, in order to alleviate the communication burden, the torus-event-based protocols are adopted to schedule the data transmissions only when some significant events occur. Our aim of the presented issue is to estimate the fault such that, with multiple fading measurements via the received information governed by torus-event-based protocols, the \(H_\infty\) index is satisfied over a given finite horizon. Sufficient conditions are obtained for the desired time-varying estimator in terms of the technique of stochastic analysis and the methods of completing squares. The desired estimator gains are calculated by working out two backward recursive Riccati difference equations. Finally, a numerical simulation is given to verify the usefulness of our designed fault estimation approach.
MSC:
| 93B36 | \(H^\infty\)-control |
| 93C55 | Discrete-time control/observation systems |
| 93E03 | Stochastic systems in control theory (general) |
| 93C23 | Control/observation systems governed by functional-differential equations |
Keywords:
\(H_\infty\) fault estimation; randomly occurring faults; recursive Riccati difference equations (RDEs); torus-event-based protocolsReferences:
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