Piezoactuator and drive circuit therefor

Details Piezoactuator and drive circuit therefor Piezoactuator and drive circuit therefor

2005-01-11

2005-01-11

Budd, Mark (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S316020, C310S323020, C318S116000

Reexamination Certificate

active

06841919

ABSTRACT:
A piezoactuator has a diaphragm, and the diaphragm has flat piezoelectric elements that oscillate in a longitudinal oscillation mode and a sinusoidal oscillation mode. A first electrode for detecting oscillation in the longitudinal oscillation mode, and a second electrode for detecting the amplitude of oscillation in the sinusoidal oscillation mode, are disposed on the surface of the diaphragm. When the piezoactuator is driven with a drive signal, the phase difference of a first detection signal output from the first electrode and a second detection signal output from the second electrode is detected. The frequency at which the detected phase difference becomes the maximum phase difference is then obtained, and a drive signal of a matching frequency is applied to the piezoelectric elements.

REFERENCES:
patent: 5563478 (1996-10-01), Suganuma
patent: 5955819 (1999-09-01), Takano et al.
patent: 6054795 (2000-04-01), Yamamoto et al.
patent: 6064140 (2000-05-01), Zumeris
patent: 6121714 (2000-09-01), Atsuta
patent: 6661154 (2003-12-01), Shibatani
patent: 06-014565 (1994-01-01), None
patent: 9-294384 (1997-11-01), None
patent: 09-308274 (1997-11-01), None
patent: 11-215858 (1999-08-01), None
patent: 2000-078867 (2000-03-01), None
patent: 2000-295876 (2000-10-01), None
patent: 2001-286164 (2001-10-01), None

Affiliated with

Also associated with

Rating

Piezoactuator and drive circuit therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Piezoactuator and drive circuit therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piezoactuator and drive circuit therefor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3404916