Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1987-11-06
1989-03-14
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
318116, H01L 4108
Patent
active
048126993
ABSTRACT:
A ultrasonic vibration motor comprises a moving member, a vibration member contacted by the moving member, an electrostrictive device provided on the vibration member, a power supply for applying a periodic voltage to the electrostrictive device to thereby vibrate the electrostrictive device and generate a travelling vibration wave in the surface of the vibration member, a device for detecting the phase difference between the voltage applied to the electrostrictive device and the current flowing into the electrostrictive device, and a device for discriminating a variation in the load of the moving member on the basis of the phase difference.
REFERENCES:
patent: 4275363 (1981-06-01), Mishiro et al.
patent: 4277758 (1981-07-01), Mishiro
patent: 4510411 (1985-04-01), Hakamata et al.
patent: 4513219 (1985-04-01), Katsuma et al.
patent: 4551690 (1985-11-01), Quist
patent: 4560263 (1985-12-01), Katsuma et al.
patent: 4562374 (1985-04-01), Sashida
patent: 4626728 (1986-12-01), Flachenecker et al.
patent: 4658172 (1987-04-01), Izukawa
patent: 4692649 (1987-09-01), Izukawa et al.
patent: 4713571 (1987-12-01), Suzuki et al.
Kazami Kazuyuki
Ogawa Hidehiro
Budd Mark O.
Nikon Corporation
LandOfFree
Drive control device in an ultrasonic vibration 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 Drive control device in an ultrasonic vibration motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drive control device in an ultrasonic vibration motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-895441