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Type: Journal article
Title: Observer-based fault-tolerant control for a class of nonlinear networked control systems
Author: Mahmoud, M.
Memon, A.
Shi, P.
Citation: International Journal of Control, 2014; 87(8):1707-1715
Publisher: Taylor & Francis
Issue Date: 2014
ISSN: 0020-7179
Statement of
M.S. Mahmoud, A.M. Memon and Peng Shi
Abstract: This paper presents a fault-tolerant control (FTC) scheme for nonlinear systems which are connected in a networked control system. The nonlinear system is first transformed into two subsystems such that the unobservable part is affected by a fault and the observable part is unaffected. An observer is then designed which gives state estimates using a Luenberger observer and also estimates unknown parameter of the system; this helps in fault estimation. The FTC is applied in the presence of sampling due to the presence of a network in the loop. The controller gain is obtained using linear-quadratic regulator technique. The methodology is applied on a mechatronic system and the results show satisfactory performance.
Keywords: Fault-tolerant control; networked control systems; LQR design; Luenberger observer; mechatronic system
Rights: © 2014 Taylor & Francis
DOI: 10.1080/00207179.2014.883646
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Electrical and Electronic Engineering publications

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