Title :
Rotor speed and flux nonlinear observer for speed sensorless induction motors
Author :
Djemai, M. ; Boukhobza, T. ; Barbot, J.-P. ; Thomas, J.L. ; Poullain, S.
Author_Institution :
ENSIB, Bourges, France
Abstract :
This paper deals with nonlinear sliding-mode flux and speed observer for an induction motor without speed measurement. The first one is designed with respect to two time scale decomposition between the mechanical dynamics and electromechanical one. The second is a new sliding mode observer based on the implicit triangular form. Finally, some simulations illustrate the efficiency of each method and concluding remarks end the paper
Keywords :
discrete time systems; dynamics; induction motors; nonlinear systems; observers; variable structure systems; electromechanical dynamics; flux nonlinear observer; implicit triangular form; mechanical dynamics; nonlinear sliding-mode flux; rotor speed; sliding mode observer; speed observer; speed sensorless induction motors; two time scale decomposition; Induction motors; Industrial control; Open loop systems; Rotors; Sensorless control; Shafts; Sliding mode control; Stators; Torque control; Velocity measurement;
Conference_Titel :
Control Applications, 1998. Proceedings of the 1998 IEEE International Conference on
Conference_Location :
Trieste
Print_ISBN :
0-7803-4104-X
DOI :
10.1109/CCA.1998.721578
