Reliable Observer-Based Control Against Sensor Failures for Systems With Time Delays in Both State and Input

Gao, Zhiwei, Breikin, Tim and Wang, Hong (2008) Reliable Observer-Based Control Against Sensor Failures for Systems With Time Delays in Both State and Input. IEEE Transactions on Systems, Man, and Cybernetics - Part A: Systems and Humans. ISSN 1083-4427

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Abstract

For systems with both state and input time delays, a novel state and sensor fault observer is proposed in this paper to estimate system states and sensor faults simultaneously. In this design, a descriptor system approach and a linear matrix inequality technique are adopted, where the considered sensor fault may be in any form, even unbounded. Unbounded sensor faults will make the system fail unavoidably; it is indispensable to derive a reliable control scheme against sensor failures. Using the estimated state and sensor fault, a reliable observer-based controller is proposed, whichmakes the system work well nomatter whether sensor faults occur or not. The present approaches are next extended to the case for systems with multiple time delays. Finally, a simulation example of the network of three cascaded reactors is used to illustrate the design procedure and demonstrate the efficiency of the present techniques.

Item Type:	Article
Subjects:	H600 Electronic and Electrical Engineering
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Related URLs:	http://ieeexplore.ieee.org/lpdocs/epic03...
Depositing User:	EPrint Services
Date Deposited:	15 Sep 2011 10:37
Last Modified:	12 Oct 2019 19:06
URI:	http://nrl.northumbria.ac.uk/id/eprint/996

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