WO1997039520A3 - High torque ultrasonic motor system - Google Patents

High torque ultrasonic motor system Download PDF

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Publication number
WO1997039520A3
WO1997039520A3 PCT/US1997/006871 US9706871W WO9739520A3 WO 1997039520 A3 WO1997039520 A3 WO 1997039520A3 US 9706871 W US9706871 W US 9706871W WO 9739520 A3 WO9739520 A3 WO 9739520A3
Authority
WO
WIPO (PCT)
Prior art keywords
piezoelectric
ultrasonic motor
motor
torque
high torque
Prior art date
Application number
PCT/US1997/006871
Other languages
French (fr)
Other versions
WO1997039520A2 (en
Inventor
Yoseph Bar-Cohen
Shyh-Shiuh Lih
Willem A Grandia
Original Assignee
California Inst Of Techn
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 California Inst Of Techn filed Critical California Inst Of Techn
Priority to EP97923449A priority Critical patent/EP0958649A2/en
Priority to AU29250/97A priority patent/AU2925097A/en
Publication of WO1997039520A2 publication Critical patent/WO1997039520A2/en
Publication of WO1997039520A3 publication Critical patent/WO1997039520A3/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
    • H02N2/16—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors using travelling waves, i.e. Rayleigh surface waves
    • H02N2/163—Motors with ring stator
    • 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
    • H10N30/50—Piezoelectric or electrostrictive devices having a stacked or multilayer structure
    • H10N30/503—Piezoelectric or electrostrictive devices having a stacked or multilayer structure having a non-rectangular cross-section in a plane orthogonal to the stacking direction, e.g. polygonal or circular in top view
    • H10N30/505—Piezoelectric or electrostrictive devices having a stacked or multilayer structure having a non-rectangular cross-section in a plane orthogonal to the stacking direction, e.g. polygonal or circular in top view the cross-section being annular

Landscapes

  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

The present invention is a compact, low mass, and low power consumption piezoelectric ultrasonic motor with high torque. The piezoelectric ultrasonic motor (54) of the present invention includes a polarized piezoelectric drive ring wafer (34) comprised of a plurality of arc piece piezoelectric elements (32). The piezoelectric ultrasonic motor (54) can utilize one or a plurality of piezoelectric wafers (34) stacked as layers (34) to increase the torque of the motor. Also, a series of the piezoelectric motors (34) can be stacked and operated synchronously, as one motor (52), to maximize the torque within the volume, mass and power specification limitations of a specific application.
PCT/US1997/006871 1996-04-17 1997-04-17 High torque ultrasonic motor system WO1997039520A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP97923449A EP0958649A2 (en) 1996-04-17 1997-04-17 High torque ultrasonic motor system
AU29250/97A AU2925097A (en) 1996-04-17 1997-04-17 High torque ultrasonic motor system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US63365096A 1996-04-17 1996-04-17
US08/633,650 1996-04-17

Publications (2)

Publication Number Publication Date
WO1997039520A2 WO1997039520A2 (en) 1997-10-23
WO1997039520A3 true WO1997039520A3 (en) 1997-11-20

Family

ID=24540546

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/006871 WO1997039520A2 (en) 1996-04-17 1997-04-17 High torque ultrasonic motor system

Country Status (3)

Country Link
EP (1) EP0958649A2 (en)
AU (1) AU2925097A (en)
WO (1) WO1997039520A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110018238A (en) * 2019-04-01 2019-07-16 武汉中科创新技术股份有限公司 A kind of recessed battle array phased array survey meter and detection system
CN111146971B (en) * 2020-02-24 2024-05-28 南京航空航天大学 Sandwich type multi-mode composite rotary piezoelectric actuator and working method thereof

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016530A (en) * 1975-06-02 1977-04-05 Goll Jeffrey H Broadband electroacoustic converter
JPS59204477A (en) * 1983-05-04 1984-11-19 Nippon Kogaku Kk <Nikon> Surface wave motor utilizing supersonic wave vibration
US4495432A (en) * 1982-12-15 1985-01-22 Canon Kabushiki Kaisha Piezoelectric vibration wave motor with sloped drive surface
JPS60170471A (en) * 1984-02-10 1985-09-03 Canon Inc Vibration wave motor
JPS60174078A (en) * 1984-02-17 1985-09-07 Matsushita Electric Ind Co Ltd Piezoelectric motor
JPS63194581A (en) * 1987-02-09 1988-08-11 Nippon Ceramic Kk Manufacture of piezoelectric actuator
JPH01107678A (en) * 1987-10-19 1989-04-25 Marcon Electron Co Ltd Ultrasonic motor
US4833359A (en) * 1987-01-27 1989-05-23 Matsushita Electric Industrial Co., Ltd. Driving apparatus for ultrasonic motor
JPH0251373A (en) * 1988-08-11 1990-02-21 Marcon Electron Co Ltd Ultrasonic motor
USRE34409E (en) * 1983-05-04 1993-10-19 Nikon Corporation Drive circuit for surface-wave driven motor utilizing ultrasonic vibration

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016530A (en) * 1975-06-02 1977-04-05 Goll Jeffrey H Broadband electroacoustic converter
US4495432A (en) * 1982-12-15 1985-01-22 Canon Kabushiki Kaisha Piezoelectric vibration wave motor with sloped drive surface
JPS59204477A (en) * 1983-05-04 1984-11-19 Nippon Kogaku Kk <Nikon> Surface wave motor utilizing supersonic wave vibration
USRE34409E (en) * 1983-05-04 1993-10-19 Nikon Corporation Drive circuit for surface-wave driven motor utilizing ultrasonic vibration
JPS60170471A (en) * 1984-02-10 1985-09-03 Canon Inc Vibration wave motor
JPS60174078A (en) * 1984-02-17 1985-09-07 Matsushita Electric Ind Co Ltd Piezoelectric motor
US4833359A (en) * 1987-01-27 1989-05-23 Matsushita Electric Industrial Co., Ltd. Driving apparatus for ultrasonic motor
JPS63194581A (en) * 1987-02-09 1988-08-11 Nippon Ceramic Kk Manufacture of piezoelectric actuator
JPH01107678A (en) * 1987-10-19 1989-04-25 Marcon Electron Co Ltd Ultrasonic motor
JPH0251373A (en) * 1988-08-11 1990-02-21 Marcon Electron Co Ltd Ultrasonic motor

Also Published As

Publication number Publication date
AU2925097A (en) 1997-11-07
WO1997039520A2 (en) 1997-10-23
EP0958649A2 (en) 1999-11-24

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