Title :
Nonlinear sensorless indirect adaptive speed control of induction motor with unknown rotor resistance and load
Author :
Lin, Yu-Chao ; Fu, Li-Chen ; Tsai, Chin-Yu
Author_Institution :
Dept. of Comput. Sci. & Inf. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
In this paper, a nonlinear indirect adaptive sensorless speed controller for induction motors is proposed. In the controller, only the stator currents are assumed to be measurable. Flux observers and rotor speed estimator are designed to relax the need of flux and speed measurement. Furthermore, two estimators are also designed to overcome the drifting problem of rotor resistance and unknown load torque
Keywords :
adaptive control; angular velocity control; induction motors; machine control; magnetic flux; nonlinear control systems; observers; flux observers; indirect adaptive control; induction motor; load torque; nonlinear control systems; rotor resistance; sensorless control; speed control; Adaptive control; Current measurement; Electrical resistance measurement; Induction motors; Programmable control; Rotors; Sensorless control; Stators; Velocity control; Velocity measurement;
Conference_Titel :
American Control Conference, 1999. Proceedings of the 1999
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-4990-3
DOI :
10.1109/ACC.1999.786332
