WO2008021281A3 - Drive circuits and methods for ultrasonic piezoelectric actuators - Google Patents

Drive circuits and methods for ultrasonic piezoelectric actuators Download PDF

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Publication number
WO2008021281A3
WO2008021281A3 PCT/US2007/017858 US2007017858W WO2008021281A3 WO 2008021281 A3 WO2008021281 A3 WO 2008021281A3 US 2007017858 W US2007017858 W US 2007017858W WO 2008021281 A3 WO2008021281 A3 WO 2008021281A3
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
actuator
methods
drive circuits
piezoelectric actuators
Prior art date
Application number
PCT/US2007/017858
Other languages
French (fr)
Other versions
WO2008021281A2 (en
Inventor
Thomas P Blandino
Tai P Luc
Peter Zhou
Original Assignee
Johnson & Son Inc S C
Thomas P Blandino
Tai P Luc
Peter Zhou
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Johnson & Son Inc S C, Thomas P Blandino, Tai P Luc, Peter Zhou filed Critical Johnson & Son Inc S C
Priority to AU2007284642A priority Critical patent/AU2007284642A1/en
Priority to JP2009524639A priority patent/JP5079003B2/en
Priority to EP07811272.9A priority patent/EP2054167B1/en
Publication of WO2008021281A2 publication Critical patent/WO2008021281A2/en
Publication of WO2008021281A3 publication Critical patent/WO2008021281A3/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/0207—Driving circuits
    • B06B1/0223—Driving circuits for generating signals continuous in time
    • B06B1/0238—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/802—Drive or control circuitry or methods for piezoelectric or electrostrictive devices not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers

Abstract

A drive circuit for and method of driving a piezoelectric actuator utilizes an impedance coupled to the piezoelectric actuator, wherein the impedance and the piezoelectric actuator together form a tank circuit that has a resonant frequency. A first circuit is provided that drives the actuator at the resonant frequency and a second circuit is further provided that selectively operates the first circuit in one of at least two modes of operation including a first mode that causes the actuator to be energized at a first duty cycle and a second mode that causes the actuator to be energized at a second duty cycle.
PCT/US2007/017858 2006-08-14 2007-08-09 Drive circuits and methods for ultrasonic piezoelectric actuators WO2008021281A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2007284642A AU2007284642A1 (en) 2006-08-14 2007-08-09 Drive circuits and methods for ultrasonic piezoelectric actuators
JP2009524639A JP5079003B2 (en) 2006-08-14 2007-08-09 Driving circuit and driving method for ultrasonic piezoelectric actuator
EP07811272.9A EP2054167B1 (en) 2006-08-14 2007-08-09 Drive circuits and methods for ultrasonic piezoelectric actuators

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/464,419 US7538473B2 (en) 2004-02-03 2006-08-14 Drive circuits and methods for ultrasonic piezoelectric actuators
US11/464,419 2006-08-14

Publications (2)

Publication Number Publication Date
WO2008021281A2 WO2008021281A2 (en) 2008-02-21
WO2008021281A3 true WO2008021281A3 (en) 2008-05-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/017858 WO2008021281A2 (en) 2006-08-14 2007-08-09 Drive circuits and methods for ultrasonic piezoelectric actuators

Country Status (6)

Country Link
US (1) US7538473B2 (en)
EP (1) EP2054167B1 (en)
JP (1) JP5079003B2 (en)
AU (1) AU2007284642A1 (en)
TW (1) TW200826327A (en)
WO (1) WO2008021281A2 (en)

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JP2010500865A (en) 2010-01-07
US7538473B2 (en) 2009-05-26
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AU2007284642A1 (en) 2008-02-21
WO2008021281A2 (en) 2008-02-21

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