Title: Faults reconstruction for output time-delay systems: sliding mode observer approach

Authors: Houaida Cherni; Iskander Boulaabi; Anis Sellami; Fayçal Ben Hmida

Addresses: Electrical Engineering Department, Higher National School of Engineering of Tunis, Tunis University, Laboratory of Engineering of Industrial Systems and Renewable Energy, 5 Taha Hussein St., BP 56, Tunis 1008, Tunisia ' Electrical Engineering Department, Higher National School of Engineering of Tunis, Tunis University, Laboratory of Engineering of Industrial Systems and Renewable Energy, 5 Taha Hussein St., BP 56, Tunis 1008, Tunisia ' Electrical Engineering Department, Higher National School of Engineering of Tunis, Tunis University, Laboratory of Engineering of Industrial Systems and Renewable Energy, 5 Taha Hussein St., BP 56, Tunis 1008, Tunisia ' Electrical Engineering Department, Higher National School of Engineering of Tunis, Tunis University, Laboratory of Engineering of Industrial Systems and Renewable Energy, 5 Taha Hussein St., BP 56, Tunis 1008, Tunisia

Abstract: This paper addresses actuator and sensor faults reconstruction based on a new sliding mode observer (SMO) for output time-delay systems. Therefore, using the Lyapunov-Krasovskii functional, the stability of the estimation error dynamics is guaranteed. Also, the linear matrix inequality (LMI) technique is applied to express the observer synthesis. After that, the proposed SMO is used to obtain actuator and sensor faults reconstruction. To show the validity and the applicability of the proposed approaches, a numerical example is provided.

Keywords: sliding mode observer; SMO; actuator fault reconstruction; sensor fault reconstruction; time-delay systems; LMI technique.

DOI: 10.1504/IJMIC.2018.090481

International Journal of Modelling, Identification and Control, 2018 Vol.29 No.2, pp.136 - 143

Received: 12 May 2016
Accepted: 21 Nov 2016
Published online: 19 Mar 2018 *

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