Hybrid control using recurrent fuzzy neural network for linear induction motor servo drive

Authors:
Faa-Jeng Lin;Rong-Jong Wai
Affiliations:
Dept. of Electr. Eng., Chung Yuan Christian Univ., Chung Li;-
Venue:
IEEE Transactions on Fuzzy Systems
Year:
2001

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Abstract

A hybrid control system using a recurrent fuzzy neural network (RFNN) is proposed to control a linear induction motor (LIM) servo drive. First, feedback linearization theory is used to decouple the thrust force and the flux amplitude of the LIM. Then, a hybrid control system is proposed to control the mover of the LIM for periodic motion. In the hybrid control system, the RFNN controller is the main tracking controller, which is used to mimic a perfect control law, and the compensated controller is proposed to compensate the difference between the perfect control law and the RFNN controller. Moreover, an online parameter training methodology, which is derived using the Lyapunov stability theorem and the gradient descent method is proposed to increase the learning capability of the RFNN. The effectiveness of the proposed control scheme is verified by both the simulated and experimental results. Furthermore, the advantages of the proposed control system are indicated in comparison with the sliding mode control system