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Decoupled stator-flux-oriented induction motor drive with fuzzy neural network uncertainty observer

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4 Author(s)
Faa-Jeng Lin ; Dept. of Electr. Eng., Chung Yuan Christian Univ., Chung Li, Taiwan ; Rong-Jong Wai ; Chih-Hong Lin ; Da-Chung Liu

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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Industrial Electronics, IEEE Transactions on  (Volume:47 ,  Issue: 2 )