Title: Ultrasonic motor
Application Number: 200610077793 Application Date: 2006.04.24
Publication Number: 1855686 Publication Date: 2006.11.01
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H02N2/00,H02N2/10,B06B1/02,B06B1/06
Applicant(s) Name: Olympus Corp. Address:
Inventor(s) Name:
Attorney & Agent: huang jianfeng
Abstract:
     With the invention, both a longitudinal vibration mode and a flexural vibration mode are independently detected, or only the longitudinal vibration mode is detected, without using a special device. The invention provides an ultrasonic motor including electromechanical transducers for driving, electromechanical transducers for vibration detection, and an ultrasonic vibrator in which, by supplying two-phase alternating voltages with a predetermined phase difference and predetermined driving frequency to the electromechanical transducers for driving, two different vibration modes are simultaneously generated to produce a substantially elliptical vibration at an output. It is possible to independently detect both the longitudinal vibration mode and the flexural vibration mode with the electromechanical transducers for vibration detection.
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