GB2381376B - Micromotor - Google Patents

Micromotor

Info

Publication number
GB2381376B
GB2381376B GB0125680A GB0125680A GB2381376B GB 2381376 B GB2381376 B GB 2381376B GB 0125680 A GB0125680 A GB 0125680A GB 0125680 A GB0125680 A GB 0125680A GB 2381376 B GB2381376 B GB 2381376B
Authority
GB
United Kingdom
Prior art keywords
sheet
legs
micromotors
leg
pad
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
GB0125680A
Other versions
GB2381376A (en
GB0125680D0 (en
Inventor
Gareth Mckevitt
Richard John Topliss
Mark Richard Shepherd
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
1 Ltd
Original Assignee
1 Ltd
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 1 Ltd filed Critical 1 Ltd
Priority to GB0125680A priority Critical patent/GB2381376B/en
Publication of GB0125680D0 publication Critical patent/GB0125680D0/en
Publication of GB2381376A publication Critical patent/GB2381376A/en
Application granted granted Critical
Publication of GB2381376B publication Critical patent/GB2381376B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H02N2/001—Driving devices, e.g. vibrators
    • H02N2/002—Driving devices, e.g. vibrators using only longitudinal or radial modes
    • H02N2/0025—Driving devices, e.g. vibrators using only longitudinal or radial modes using combined longitudinal 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
    • H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
    • H02N2/026—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors by pressing one or more vibrators against the driven body
    • 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
    • H10N30/01—Manufacture or treatment
    • H10N30/08—Shaping or machining of piezoelectric or electrostrictive bodies
    • H10N30/085—Shaping or machining of piezoelectric or electrostrictive bodies by machining
    • 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
    • H10N30/01—Manufacture or treatment
    • H10N30/08—Shaping or machining of piezoelectric or electrostrictive bodies
    • H10N30/085—Shaping or machining of piezoelectric or electrostrictive bodies by machining
    • H10N30/088—Shaping or machining of piezoelectric or electrostrictive bodies by machining by cutting or dicing
    • 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
    • H10N30/01—Manufacture or treatment
    • H10N30/09—Forming piezoelectric or electrostrictive materials
    • H10N30/093—Forming inorganic materials
    • H10N30/097—Forming inorganic materials by sintering
    • 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
    • H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
    • H10N30/206—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using only longitudinal or thickness displacement, e.g. d33 or d31 type devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

An array 1 of micromotors 2 is formed from a sheet 3 of piezoelectric material. The sheet 3 is cut to define the micromotors as a plurality of elongate legs 5 which are connected together by a bridging portion 6 at one end of each leg 5 and which extend to the remainder of the sheet 3. The bridging portion 6 mounts a contact pad 7. The legs 5 are angled away from the remainder of the sheet 3. Each of the legs 5 has a pair of electrodes 8 extending along the legs 5 on the opposed major surfaces of the sheet 3 for applying an electric field across the sheet, the material being poled across the sheet 3 for activation in an expansion-contraction mode. In use, a periodic control voltage is applied across the pair of electrodes 8 for each leg 5 with a predetermined phase relationship between the control voltages for each leg 5. The resultant expansion and contraction of the legs 5 moves the pad around an orbital path allowing the pad 7 to drive movement of an object. The micromotors 2 are easy to manufacture by cutting and pressing a sheet 3 of piezoelectric material.
GB0125680A 2001-10-25 2001-10-25 Micromotor Expired - Fee Related GB2381376B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0125680A GB2381376B (en) 2001-10-25 2001-10-25 Micromotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0125680A GB2381376B (en) 2001-10-25 2001-10-25 Micromotor

Publications (3)

Publication Number Publication Date
GB0125680D0 GB0125680D0 (en) 2001-12-19
GB2381376A GB2381376A (en) 2003-04-30
GB2381376B true GB2381376B (en) 2005-04-20

Family

ID=9924545

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0125680A Expired - Fee Related GB2381376B (en) 2001-10-25 2001-10-25 Micromotor

Country Status (1)

Country Link
GB (1) GB2381376B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3065287A1 (en) * 2015-03-04 2016-09-07 Seiko Epson Corporation Piezoelectric drive device and robot

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6967430B2 (en) 2003-10-01 2005-11-22 Piezomotor Uppsala Ab Flat resonating electromechanical drive unit
ATE467238T1 (en) 2005-04-28 2010-05-15 Brother Ind Ltd METHOD FOR PRODUCING A PIEZOELECTRIC ACTUATOR

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002050923A1 (en) * 2000-12-20 2002-06-27 Piezomotor Uppsala Ab Double electromechanical element

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002050923A1 (en) * 2000-12-20 2002-06-27 Piezomotor Uppsala Ab Double electromechanical element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3065287A1 (en) * 2015-03-04 2016-09-07 Seiko Epson Corporation Piezoelectric drive device and robot

Also Published As

Publication number Publication date
GB2381376A (en) 2003-04-30
GB0125680D0 (en) 2001-12-19

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20201025