Title: Stable design of Takagi-Sugeno fuzzy controllers for a laboratory three-tank system

Authors: Radu-Emil Precup, Marius-Lucian Tomescu, Stefan Preitl, Emil M. Petriu, Janos Fodor, Adrian Sebastian Paul

Addresses: Department of Automation and Applied Informatics, Politehnica University of Timisoara, Bd. V. Parvan 2, RO-300223 Timisoara, Romania. ' Faculty of Computer Science, Aurel Vlaicu University of Arad, Complex Universitar M, Str. Elena Dragoi 2, RO-310330 Arad, Romania. ' Department of Automation and Applied Informatics, Politehnica University of Timisoara, Bd. V. Parvan 2, RO-300223 Timisoara, Romania. ' School of Information Technology and Engineering, University of Ottawa, 800 King Edward, Ottawa, ON K1N 6N5, Canada. ' Institute of Intelligent Engineering Systems, Obuda University, Becsi ut 96/B, H-1034 Budapest, Hungary. ' Department of Automation and Applied Informatics, Politehnica University of Timisoara, Bd. V. Parvan 2, RO-300223 Timisoara, Romania

Abstract: This paper suggests a stable design approach dedicated to the Takagi-Sugeno fuzzy controllers for the water-level control of a laboratory three-tank system. The design approach is based on a simplified application of LaSalle|s global invariant set theorem. An original stability analysis theorem offers sufficient inequality-type stability conditions that enable the controller design and tuning. Real-time experimental results are included to validate the theoretical results.

Keywords: fuzzy logic; fuzzy control; nonlinear systems; stability analysis; water level control; Takagi-Sugeno; TS fuzzy controllers; three-tank systems; controller design; tuning.

DOI: 10.1504/IJNKM.2011.040938

International Journal of Nuclear Knowledge Management, 2011 Vol.5 No.2, pp.126 - 147

Available online: 26 Jun 2011 *

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