Circuit for rotating ultrasonic motor

Details Circuit for rotating ultrasonic motor Circuit for rotating ultrasonic motor

1995-05-09

1996-10-08

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310317, H01L 4108, H02N 200

Patent

active

055634648

ABSTRACT:
This invention discloses a device for rotating a traveling-wave-type ultrasonic motor having an electromechanical conversion device to which two-phase AC signals generated from a DC power source and having a phase difference of 90 degrees are supplied, the device for rotating a traveling-wave-type ultrasonic motor comprising:

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patent: 5355047 (1994-10-01), Okada
patent: 5376855 (1994-12-01), Suganuma

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