Ultrasonic-motor driving apparatus

Details Ultrasonic-motor driving apparatus Ultrasonic-motor driving apparatus

2006-04-04

2006-04-04

Dougherty, Thomas M. (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

Reexamination Certificate

active

07023125

ABSTRACT:
An ultrasonic-motor driving apparatus includes an ultrasonic motor, a driving unit, and a characteristic storage. The driving unit is detachable from the ultrasonic motor and has a driving circuit for driving the ultrasonic motor. The characteristic storage provided in the ultrasonic motor stores driving characteristic values of a resonant frequency and a drive voltage signal specific to the ultrasonic motor. The driving circuit drives and controls the ultrasonic motor based on the driving characteristic values stored in the characteristic storage.

REFERENCES:
patent: 5159253 (1992-10-01), Shimizu et al.
patent: 6486743 (2002-11-01), Hasegawa et al.
patent: 2001/0004179 (2001-06-01), Iino et al.
patent: 6-296378 (1994-10-01), None

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