Robust Observer Design with Pole Placement Constraints for Induction Motor Control

Abderrahmen Zaafouri; Fethi Farhani; Abdelkader Chaari

doi:10.5755/j01.eee.21.1.5223

Authors

Abderrahmen Zaafouri University of Tunis
Fethi Farhani University of Tunis
Abdelkader Chaari University of Tunis

DOI:

https://doi.org/10.5755/j01.eee.21.1.5223

Keywords:

Full-order observer, LMI, induction machine, robust control, sensorless control, vector control.

Abstract

This paper presents an observation and control design methodology for a three-phase induction machine using a robust control technique. The state estimation and parameter identification of electrical motor are the main problem of the high-performance industrial application of electric drives. We propose a robust solution for real-time estimation of the rotor flux as well as the rotor speed. Indeed, to achieve a robust performance for the rotor flux observer, a H∞ synthesis technique with pole placement will be used. The observer gain matrix is calculated by solving a convex optimization problem. The proposed solution has been tested and validated by an experimental set-up on a 3 KW squirrel age induction motor.

DOI: http://dx.doi.org/10.5755/j01.eee.21.1.5223

Author Biographies

Abderrahmen Zaafouri, University of Tunis

Abderrahmen Zaafouri was born in 1967 in Sidi Bouzid, Tunisia. He received a B.Sc. in electrical engineering from the Higher Normal School of Technical Education of Tunis (ENSET) in 1993. In 1995, he obtained the Master’s degree in automatic control at the same university, and the PhD degree from the National Engineering School of Tunis in 2000. He joined the Higher School of Sciences and Techniques of Tunis (ESSTT) at Tunis University as an assistant professor. Currently he is a member of the Research Unit on Control, Monitoring and Safety of Systems (C3S) at ESSTT. His main research interests are approaches to robust control of uncertain systems performance study.

Fethi Farhani, University of Tunis

Fethi Farhani was born in Kairouan, Tunisia, in 1977; He received a B.Sc. Electrical engineering from the Higher School of Sciences and Techniques of Tunis (ESSTT) at Tunis University in 2004. In 2007, he obtained the Master’s degree in automatic control at the same university. Currently, he is working toward a Ph.D. in the research unit on control, monitoring and safety of systems (C3S) at ESSTT, University of Tunis. His main research interests are robust estimation, robust filtering and real time control.

Abdelkader Chaari, University of Tunis

Abdelkader Chaari was born in 1957 in Sfax, Tunisia. In 1982, he received his postgraduate diploma in automatics at the “Ecole Normale Superieure de l’Enseignement Technique de Tunis” (ENSET), Tunisia, and a Ph.D. in identification and control self-adjustable: application to DC motor. He obtained his H.D.R. in Electrical Engineering in 2008. Since 1982, he has joined the Higher School of Sciences and Techniques of Tunis (ESSTT) as an assistant professor. Currently, he is a member of a research unit on control, monitoring, and system safety (C3S: “Commande, Surveillance et Sûreté de fonctionnement des Systèmes”) at E.S.S.T.T. He has authored or coauthored more than 50 papers published in international conference proceedings and technical journals in the areas, and also held many patents. His main research interests are the identification and control of nonlinear systems, robust estimation and robust filtering.