Title: Stability analysis and fault-tolerant control of neutral systems

Authors: Rabeb Benjemaa; Aicha Elhsoumi; Saloua Bel Hadj Ali Naoui

Addresses: MACS LR16ES22, Gabes University, National Engineering School of Gabes, 6029, Tunisia ' MACS LR16ES22, Gabes University, National Engineering School of Gabes, 6029, Tunisia ' Preparatory Institute for Engineering Studies-ElManar ElManar University, 1068, Tunisia

Abstract: This work studies the problem of stability analysis and the design of the fault-tolerant control (FTC) for neutral time delay systems. Improved stability criteria are obtained by applying the Lyapunov method and linear matrix inequality (LMI) technique. An adaptive-observer is designed to detect and estimate the fault, based on LMI approach the observer gains matrices are obtained. Then, a new control law is proposed to achieve fault compensation, this control law is based on the ability to maintain the overall stability of the system in the presence of fault. A numerical example is given to illustrate our theoretical results.

Keywords: neutral time-delay system; stability; fault detection; fault estimation; FTC; fault tolerant control; adaptive observer; LMI; linear matrix inequality.

DOI: 10.1504/IJMIC.2021.123367

International Journal of Modelling, Identification and Control, 2021 Vol.38 No.3/4, pp.291 - 301

Received: 22 May 2020
Accepted: 06 Jan 2021

Published online: 13 Jun 2022 *

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