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Variable-structured robust control by fuzzy logic and stability analysis for AC drive system

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3 Author(s)
Dote, Y. ; Dept. of Comput. Sci. & Syst. Eng., Muroran Inst. of Technol., Hokkaido, Japan ; Strefezza, M. ; Suyitno, A.

This paper proposes a gain scheduling robust controller whose structure is continuously changed by fuzzy logic such that the controller makes the system respond quickly if the error e is large and vice versa in order to obtain a robust controller which is insensitive to both the plant noise and the observation noise. Then, it is applied to speed control for an induction servomotor. Experiments show that the proposed controller is superior to both a sliding mode controller and a PID controller. The paper includes the stability analysis of the overall system and the design procedure using Liapunov's method

Published in:

Industrial Electronics, Control, and Instrumentation, 1993. Proceedings of the IECON '93., International Conference on

Date of Conference:

15-19 Nov 1993