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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS)
Bachir Bensaker
Badji Mokhtar University
Control & Systems Engineering Electrical & Electronics Engineering

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A comparative study of nonlinear circle criterion based observer and H∞ observer for induction motor drive Farid Berrezzek; Wafa Bourbia; Bachir Bensaker
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 10, No 3: September 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (434.459 KB) | DOI: 10.11591/ijpeds.v10.i3.pp1229-1243

Abstract

This paper deals with a comparative study of circle criterion based nonlinear observer and H∞ observer for induction motor (IM) drive. The  advantage of the circle criterion approach for nonlinear observer design is that it directly handles the nonlinearities of the system with less restriction  conditions in contrast of the other methods which attempt to eliminate them. However the H∞ observer guaranteed the stability taking into account disturbance and noise attenuation. Linear matrix inequality (LMI) optimization approach is used to compute the gains matrices for the two observers. The simulation results show the superiority of H∞ observer in the sense that it can achieve convergence to the true state, despite the nonlinearity of model and the presence of disturbance.
Co-Authors Farid Berrezzek Wafa Bourbia