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Quick and precise position control of ultrasonic motor using hybrid control
Author(s) -
Senjyu Tomonobu,
Miyazato Hiroshi,
Uezato Katsumi
Publication year - 1996
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.4391160308
Subject(s) - ultrasonic motor , servomotor , control theory (sociology) , torque , ultrasonic sensor , position (finance) , engineering , direct torque control , torque motor , electronic speed control , control engineering , computer science , control (management) , acoustics , induction motor , electrical engineering , mechanical engineering , physics , stator , artificial intelligence , finance , voltage , economics , thermodynamics
The ultrasonic motor has an excellent level of performance and many useful features, including high torque, low speed, compactness in size, and absence of electromagnetic interference. This motor has an especially large holding torque and a high response characteristic, making it ideal for use as a servomotor. The drive principle of the ultrasonic motor is, however, different from that of electromagnetic motors and its mathematical model has not been developed yet. Its speed characteristics, moreover, vary with the driving conditions. Consequently, it is difficult to control the ultrasonic motor while maintaining performance. In this paper, a position control scheme using adaptive control is proposed. The utility and validity of the proposed control scheme is tested in experiment.