Driving device for ultrasonic wave motor

Details Driving device for ultrasonic wave motor Driving device for ultrasonic wave motor

1992-11-03

1994-12-27

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

053768558

ABSTRACT:
A driving device for an ultrasonic wave motor has a limit detecting circuit for detecting that the drive voltage for the ultrasonic wave motor has reached a limit, and, in response, a drive voltage limiting circuit controls the drive voltage so as not to go beyond the limit value. Such control is conducted on the voltage or frequency of a signal for driving the ultrasonic wave motor. In another aspect of the invention, a drive state detecting circuit detects the drive state of the ultrasonic wave motor, and a drive frequency (or voltage) setting circuit controls the frequency (or voltage) of a signal for driving the ultrasonic wave motor so as to attain the maximum efficiency in the motor, based on the output of the drive state detecting circuit.

REFERENCES:
patent: 4510411 (1985-04-01), Hakamata et al.
patent: 4727276 (1988-02-01), Izukawa et al.
patent: 4743788 (1988-05-01), Takagi et al.
patent: 4794294 (1988-12-01), Shimizu
patent: 4833358 (1989-05-01), Suzuki et al.
patent: 4888514 (1989-12-01), Takahashi et al.
patent: 4914337 (1990-04-01), Takagi
patent: 4926084 (1990-05-01), Furutsu et al.
patent: 4952834 (1990-08-01), Okada
patent: 4954741 (1990-09-01), Furutsu et al.
patent: 4954742 (1990-09-01), Izukawa
patent: 4998048 (1991-03-01), Furutsu
patent: 5001404 (1991-03-01), Kataoka
patent: 5010222 (1991-04-01), Suganuma
patent: 5023526 (1991-06-01), Kuwabara et al.
patent: 5101144 (1992-03-01), Hirotomi
patent: 5136215 (1992-08-01), Izukawa
patent: 5140231 (1992-08-01), Kashiyama
patent: 5143143 (1992-09-01), Furutsu
patent: 5165047 (1992-11-01), Shimizu

Affiliated with

Also associated with

Rating

Driving device for ultrasonic wave motor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Driving device for ultrasonic wave motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driving device for ultrasonic wave motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-921130