Title: Adaptive observers for speed sensorless IMs

Authors: Ahmed Chouya; Mohammed Chanafa; Abdellah Mansouri

Addresses: Department of Genie Electrical, ENPO, BP 1523 El Mnaouer, Oran, Algeria ' Department of Genie Electrical, ENPO, BP 1523 El Mnaouer, Oran, Algeria ' Department of Genie Electrical, ENPO, BP 1523 El Mnaouer, Oran, Algeria

Abstract: In this paper, one proposes an approach which allows the design adaptive observers for a class of uniformly observable nonlinear MIMO systems with linear parameterisations. The structure of the proposed observer is simple and it is able to give rise to different observers: 1) adaptive high gain observer for linearly parameterised; 2) adaptive sliding mode observer for linearly parameterised with tanh commutation function; 3) adaptive sliding mode observer for linearly parameterised with arctan commutation function. These observers are applied to jointly estimate states (rotor flux, rotating speed and torque load) and unknown constant parameters (stator resistance).

Keywords: adaptive observers; high gain observers; sliding mode observers; induction machines; sensorless speed; MIMO systems; nonlinear systems; linear parameterisation; rotor flux; rotating speed; torque load; stator resistance.

DOI: 10.1504/IJSCC.2015.072539

International Journal of Systems, Control and Communications, 2015 Vol.6 No.4, pp.351 - 375

Received: 19 Jan 2015
Accepted: 26 Jun 2015
Published online: 16 Oct 2015 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article