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Same phase drive-type ultrasonic motors using two degenerate bending vibration modes of a disk

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3 Author(s)
T. Takano ; Dept. of Commun. Eng., Tohoku Inst. of Technol., Miyagi, Japan ; Y. Tomikawa ; C. Kusakabe

Same-phase drive-type ultrasonic motors, using two degenerate bending vibration modes of a disk, are presented. The distinctive feature of the motor is in using the standing wave modes. The motor is not driven by two input signals with different phases, but by input signals with the same phase. Therefore, only one amplifier is sufficient to drive the motor. The experimental results have proved that the motor can yield stable operational characteristics at low speed and high torque.<>

Published in:

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control  (Volume:39 ,  Issue: 2 )