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Speed control of induction motors using a novel fuzzy sliding-mode structure

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5 Author(s)
Barrero, F. ; Departimento de Ingenieria Electronica, Escuela Superior de Ingenieros, Seville, Spain ; Gonzalez, A. ; Torralba, A. ; Galvan, E.
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This paper presents a new approach to indirect vector control of induction motors. Two nonlinear controllers, one of sliding mode type and the other PI-fuzzy logic-based, define a new control structure. Both controllers are combined by means of an expert system based on Takagi-Sugeno fuzzy reasoning. The sliding-mode controller acts mainly in a transient state while the PI-like fuzzy controller acts in the steady state. The new structure embodies the advantages that both nonlinear controllers offer: sliding-mode controllers increasing system stability limits, and PI-like fuzzy logic based controllers reducing the chattering in permanent state. The scheme has been implemented and experimentally validated

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Fuzzy Systems, IEEE Transactions on  (Volume:10 ,  Issue: 3 )