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Neural-network-based adaptive control for induction servomotor drive system

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2 Author(s)
Chih-Min Lin ; Dept. of Electr. Eng., Yuan-Ze Univ., Chung-li, Taiwan ; Chun-Fei Hsu

A neural-network-based adaptive control (NNAC) design method is proposed to control an induction servomotor. In this NNAC design, a neural network (NN) controller is investigated to mimic a feedback linearization control law; and a compensation controller is designed to compensate for the approximation error between the feedback linearization control law and the NN controller. The interconnection weights of the NN can be online tuned in the sense of the Lyapunov stability theorem; thus, the stability of the control system can be guaranteed. Additionally, in this NNAC system design, an error estimation mechanism is investigated to estimate the bound of approximation error so that the chattering phenomenon of the control effort can be reduced. Simulation and experimental results show that the proposed NNAC servomotor control systems can achieve favorable tracking and robust performance with regard to parameter variations and external load disturbances

Published in:

IEEE Transactions on Industrial Electronics  (Volume:49 ,  Issue: 1 )