Driving circuit for piezoelectric motor

Details Driving circuit for piezoelectric motor Driving circuit for piezoelectric motor

2005-06-10

2010-02-23

Benson, Walter (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S316030, C310S317000

Reexamination Certificate

active

07667372

ABSTRACT:
In a method and a device according to the present invention, two piezo-elements of a piezo-electric actuator are driven with two voltages having a mutual phase difference. One of said piezo-elements is charged by a capacitive voltage step-up means to a voltage exceeding an available power supply voltage. A capacitor is coupled to the piezo-element, which divides the voltage of the piezo-element and simultaneously transfers part of the energy stored in the piezo-element to said capacitor. A part of the energy transferred to said capacitor is later transferred back to said piezo-element, providing an energy-saving feature. The second piezo-element is driven in a similar way providing the required phase difference. In a further embodiment, the waveforms of the two driving signals are corrected using balancing capacitors.

REFERENCES:
patent: 4044297 (1977-08-01), Nobue et al.
patent: 4404502 (1983-09-01), Magori et al.
patent: 4568849 (1986-02-01), Sato et al.
patent: 4732129 (1988-03-01), Takigawa et al.
patent: 4841191 (1989-06-01), Takata et al.
patent: 5130598 (1992-07-01), Verheyen et al.
patent: 5146071 (1992-09-01), Ookubo et al.
patent: 5444310 (1995-08-01), Kataoka et al.
patent: 5739679 (1998-04-01), Takehara et al.
patent: 5917267 (1999-06-01), Miyazawa et al.
patent: 5969464 (1999-10-01), Nakano et al.
patent: 6060814 (2000-05-01), Hoffmann et al.
patent: 6512321 (2003-01-01), Yoshida et al.
patent: 6563251 (2003-05-01), Jansson et al.
patent: 6747394 (2004-06-01), Johansson et al.
patent: 6943785 (2005-09-01), Chou et al.
patent: 7019436 (2006-03-01), Rueger et al.
patent: 2001/0035696 (2001-11-01), Knowles et al.
patent: 2002/0079785 (2002-06-01), Knowles et al.
patent: 2002/0113563 (2002-08-01), Jansson et al.
patent: 19858250 (2000-06-01), None
patent: 1001474 (2000-05-01), None
patent: WO 02/067411 (2002-08-01), None
patent: WO 03/104874 (2003-12-01), None
“Sahkolaitostekniikan Perusteet”, Jarmo Elovaara et al., Otakustantamo 499, Karisto Oy, Hameenlinna, 1988, p. 289, Figure 9.43.
Patent Abstracts of Japan, publication No. 05174987, publication date—Jul. 13, 1993, “Light Source Lighting Device”, K. Shozo, Matsushita Electric Works Ltd.
Patent Abstracts of Japan, publication No. 2000346684, publication date—Dec. 15, 2000, “Vortex Flowmeter”, Y. Akio, Yokogawa Electric Corp.
Poyhonen O., (Sähkötekniikan käsikirja 2), Tammi 1979, Helsinki.

Affiliated with

Also associated with

Rating

Driving circuit for piezoelectric 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 circuit for piezoelectric motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driving circuit for piezoelectric motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4189941