WO2007129987A8 - Piezoelectric micromotor construction and method of driving the same - Google Patents

Piezoelectric micromotor construction and method of driving the same

Info

Publication number
WO2007129987A8
WO2007129987A8 PCT/SG2006/000129 SG2006000129W WO2007129987A8 WO 2007129987 A8 WO2007129987 A8 WO 2007129987A8 SG 2006000129 W SG2006000129 W SG 2006000129W WO 2007129987 A8 WO2007129987 A8 WO 2007129987A8
Authority
WO
WIPO (PCT)
Prior art keywords
output torque
micromotor
driving
vpp
stator
Prior art date
Application number
PCT/SG2006/000129
Other languages
French (fr)
Other versions
WO2007129987A1 (en
Inventor
Jing Jin
Leong Chew Lim
Original Assignee
Microfine Materials Technologi
Jing Jin
Leong Chew Lim
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 Microfine Materials Technologi, Jing Jin, Leong Chew Lim filed Critical Microfine Materials Technologi
Priority to PCT/SG2006/000129 priority Critical patent/WO2007129987A1/en
Publication of WO2007129987A1 publication Critical patent/WO2007129987A1/en
Publication of WO2007129987A8 publication Critical patent/WO2007129987A8/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
    • H02N2/0005—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing non-specific motion; Details common to machines covered by H02N2/02 - H02N2/16
    • H02N2/005—Mechanical details, e.g. housings
    • H02N2/0055—Supports for driving or driven bodies; Means for pressing driving body against driven body
    • H02N2/006—Elastic elements, e.g. springs
    • 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
    • H02N2/0005—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing non-specific motion; Details common to machines covered by H02N2/02 - H02N2/16
    • H02N2/001—Driving devices, e.g. vibrators
    • H02N2/0015—Driving devices, e.g. vibrators using only bending modes
    • 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
    • H02N2/103—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors by pressing one or more vibrators against the rotor
    • 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
    • H02N2/14—Drive circuits; Control arrangements or methods

Landscapes

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

Abstract

A method for driving an ultrasonic motor uses a high dynamic clamping load, which allows a high optimum preload for the operation of the motor under non-slippage conditions, resulting in a high frictional force between the rotor and the stator, and giving rise to a high output torque. The high dynamic clamping load may be achieved, for example, via relaxor-based single-crystal driving elements, and a stator comprising a metal cylinder of high specific modulus. A pulsed input voltage allows use of the micromotor as a stepper motor having accurate angular positioning. The micromotor may be several mm or tens of mm in diameter, and achieve ratios of output torque to input voltage greater than 10 μNm/Vpp (eg, an output torque of 0.56 mNm at 40 Vpp).
PCT/SG2006/000129 2006-05-19 2006-05-19 Piezoelectric micromotor construction and method of driving the same WO2007129987A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/SG2006/000129 WO2007129987A1 (en) 2006-05-19 2006-05-19 Piezoelectric micromotor construction and method of driving the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SG2006/000129 WO2007129987A1 (en) 2006-05-19 2006-05-19 Piezoelectric micromotor construction and method of driving the same

Publications (2)

Publication Number Publication Date
WO2007129987A1 WO2007129987A1 (en) 2007-11-15
WO2007129987A8 true WO2007129987A8 (en) 2008-03-06

Family

ID=38668013

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SG2006/000129 WO2007129987A1 (en) 2006-05-19 2006-05-19 Piezoelectric micromotor construction and method of driving the same

Country Status (1)

Country Link
WO (1) WO2007129987A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102005965B (en) * 2010-11-29 2012-12-05 中国科学院上海硅酸盐研究所 Ultrasonic motor driven by single-phase power supply
DE102012219354A1 (en) 2012-10-23 2014-04-24 Olympus Winter & Ibe Gmbh Actuator for a surgical instrument
CN110687676B (en) * 2018-07-06 2021-10-08 成都理想境界科技有限公司 Optical fiber scanning driver, optical fiber scanning module and projection equipment
WO2023013317A1 (en) * 2021-08-04 2023-02-09 株式会社村田製作所 Stator structure of ultrasonic actuator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0795780A (en) * 1993-09-22 1995-04-07 Res Dev Corp Of Japan Mode rotating type ultrasonic motor
JPH07231684A (en) * 1994-02-21 1995-08-29 Kanagawa Kagaku Gijutsu Akad Ultrasonic micromotor and manufacture of its stator
US6231779B1 (en) * 1997-10-20 2001-05-15 Massachusetts Institute Of Technology Piezoelectric actuators and method of making same

Also Published As

Publication number Publication date
WO2007129987A1 (en) 2007-11-15

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