Decoupled stator-flux-oriented induction motor drive with fuzzyneural network uncertainty observer
Faa-Jeng Lin; Rong-Jong Wai; Chih-Hong Lin; Da-Chung Liu
Industrial Electronics, IEEE Transactions on
Volume 47, Issue 2, Apr 2000 Page(s):356 - 367
Digital Object Identifier   10.1109/41.836351
Summary:A stator-flux-oriented induction motor drive using online rotor time-constant estimation with a robust speed controller is introduced in this paper. The estimation of the rotor time constant is made on the basis of the model reference adaptive system using an energy function. The estimated rotor time-constant is used in the current-decoupled controller, which is designed to decouple the torque and flux in the stator-flux-field-oriented control. Moreover, a robust speed controller, which is comprised of an integral-proportional speed controller and a fuzzy neural network uncertainty observer, is designed to increase the robustness of the speed control loop. The effectiveness of the proposed control scheme is demonstrated by simulation and experimental results

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