Title: Fault tolerant trajectory tracking control design for interval-type-2 Takagi-Sugeno fuzzy logic system
Authors: Imen Maalej; Chokri Rekik; Donia Ben Halima Abid
Addresses: Control and Energy Management Laboratory, National Engineering School of Sfax, University of Sfax, Tunisia ' Control and Energy Management Laboratory, National Engineering School of Sfax, University of Sfax, Tunisia ' Control and Energy Management Laboratory, National Engineering School of Sfax, University of Sfax, Tunisia
Abstract: The interval type-2 Takagi-Sugeno fuzzy logic system (IT2 TS FLS) has been recently used in several control applications to handle nonlinear systems subjected to various uncertainties. This paper considers the problem of fault tolerant control (FTC) for discrete-time nonlinear system described by IT2 TS fuzzy model affected by actuator faults via state feedback control method. The IT2 fuzzy controller is designed to compensate the effect of the fault such that the stability of the closed loop system is ensured. Stability conditions for the IT2 faulty system are presented in terms of linear matrix inequalities (LMIs). Simulation results performed on the three tank system are presented to demonstrate the efficiency of the proposed controller over the traditional type-1 fuzzy fault tolerant controller.
Keywords: interval type-2 Takagi-Sugeno fuzzy logic system; IT2 TS FLS; fault tolerant control; FTC; linear matrix inequalities; LMIs.
International Journal of Modelling, Identification and Control, 2017 Vol.27 No.3, pp.230 - 242
Received: 18 Jan 2016
Accepted: 21 Apr 2016
Published online: 22 Apr 2017 *