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Neuro-fuzzy dual-mode control of travelling-wave ultrasonic motors

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3 Author(s)
Chung, S.W. ; Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong ; Chau, K.T. ; Chan, C.C.

With their significant advantages over traditional electromagnetic motors, ultrasonic motors (USMs) are becoming attractive. This paper presents a neuro-fuzzy dual-mode controller, combining the knowledge-based fuzzy logic and the learning-incorporated neural network as well as using dual control inputs, for servo control of travelling-wave USMs. According to the proposed neuro-fuzzy control, both the driving frequency and phase difference of the USM system are simultaneously adjusted on-line. Experimental results have verified its superior steady-state and dynamic performances under various reference inputs

Published in:

Electric Machines and Drives, 1999. International Conference IEMD '99

Date of Conference:

May 1999