BR0007261A - Method and apparatus for measuring the torsional moment transmitted by a limb - Google Patents

Method and apparatus for measuring the torsional moment transmitted by a limb

Info

Publication number
BR0007261A
BR0007261A BR0007261-3A BR0007261A BR0007261A BR 0007261 A BR0007261 A BR 0007261A BR 0007261 A BR0007261 A BR 0007261A BR 0007261 A BR0007261 A BR 0007261A
Authority
BR
Brazil
Prior art keywords
saw device
electrodes
pair
measuring
torsional moment
Prior art date
Application number
BR0007261-3A
Other languages
Portuguese (pt)
Inventor
Anthony Lonsdale
Bryan Lonsdale
Original Assignee
Transense Technologies Plc
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 Transense Technologies Plc filed Critical Transense Technologies Plc
Publication of BR0007261A publication Critical patent/BR0007261A/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/02—Rotary-transmission dynamometers
    • G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
    • G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

MéTODO E APARELHO PARA MEDIR O MOMENTO DE TORçãO TRANSMITIDO POR UM MEMBRO". Um método e aparelho para medir o momento de torção transmitido por um membro compreende um dispositivo SAW (66) fixado ao membro tal que a tensão mecânica no membro devido ao momento de torção transmitido por ele induz a dobra do dispositivo SAW. São fornecidos meios para medir a mudança na freq³ência ressonante do dispositivo SAW induzida pela dobra. Em uma modalidade, um furo (52) é formado no membro (50) e o dispositivo SAW é montado em um par de sulcos diametralmente opostos providos no furo (52). O dispositivo SAW compreende um substrato no qual pares de eletrodos são assentados, os pares de eletrodos estando em uma posição tal que a dobra do dispositivo SAW resulta na compressão da zona contendo um par de eletrodos e tensão em uma zona que compreende outro par de eletrodos. Em uma disposição alternativa, o membro é formado com uma parte em recesso na superfície dele e o dispositivo SAW é montado em um par de sulcos formados pelas paredes opostas do recesso. O eixo ao redor do qual o momento de torção é aplicado assenta-se preferivelmente ou é substancialmente paralelo ao plano do dispositivo SAW.METHOD AND APPARATUS FOR MEASURING THE TORSION MOMENT TRANSMITTED BY A MEMBER ". A method and apparatus for measuring the torsional moment transmitted by a member comprises a SAW device (66) fixed to the member such that the mechanical stress on the member due to the moment of torsion transmitted by it induces the fold of the SAW device. Means are provided to measure the change in resonant frequency of the SAW device induced by the fold. In one embodiment, a hole (52) is formed in the member (50) and the SAW device is mounted in a pair of diametrically opposed grooves provided in the hole (52). The SAW device comprises a substrate on which pairs of electrodes are seated, the pairs of electrodes being in a position such that the folding of the SAW device results in the compression of the zone containing a pair of electrodes and voltage in a zone that comprises another pair of electrodes. In an alternative arrangement, the member is formed with a recessed part on its surface and the device ive SAW is mounted on a pair of grooves formed by the opposite walls of the recess. The axis around which the torsional moment is applied preferably rests or is substantially parallel to the plane of the SAW device.

BR0007261-3A 1999-11-01 2000-10-31 Method and apparatus for measuring the torsional moment transmitted by a limb BR0007261A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9925873A GB2358927A (en) 1999-11-01 1999-11-01 Torque measurement using single Surface Acoustic Wave (SAW) device
PCT/GB2000/004174 WO2001033180A1 (en) 1999-11-01 2000-10-31 Torque measurement

Publications (1)

Publication Number Publication Date
BR0007261A true BR0007261A (en) 2002-01-29

Family

ID=10863777

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0007261-3A BR0007261A (en) 1999-11-01 2000-10-31 Method and apparatus for measuring the torsional moment transmitted by a limb

Country Status (9)

Country Link
EP (1) EP1144972A1 (en)
JP (1) JP2003513266A (en)
KR (1) KR20010105321A (en)
CN (1) CN1340154A (en)
AU (1) AU1154401A (en)
BR (1) BR0007261A (en)
CA (1) CA2356484A1 (en)
GB (1) GB2358927A (en)
WO (1) WO2001033180A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR0212721A (en) * 2001-10-16 2004-10-05 Transense Technologies Plc Stable temperature saw sensor with third order elastic constants
GB2383282B (en) * 2002-04-02 2004-06-16 Crane Electronics Torque sensing tool
GB0221695D0 (en) 2002-09-18 2002-10-30 Transense Technologies Plc Measuring torsional distortion
GB2413710B (en) * 2004-04-26 2007-03-21 Transense Technologies Plc Split-ring coupler incorporating dual resonant sensors
JP2008286521A (en) * 2007-05-15 2008-11-27 Epson Toyocom Corp Rotational speed detecting unit, and rotational speed sensor
KR101657755B1 (en) * 2014-04-02 2016-09-20 주식회사 포스코 Apparatus for measuring torque of spindle in hot rolling mill equipment
JP2017067649A (en) * 2015-09-30 2017-04-06 株式会社デンソー Physical quantity sensor
CN108444549A (en) * 2018-06-08 2018-08-24 扬州森瑟尔科技有限公司 A kind of dynamometry/torque sensor
CN109434865B (en) * 2018-12-14 2024-04-16 浙江工业大学 Five-finger dexterous hand based on intelligent special-shaped steel cable driving

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9004822D0 (en) * 1990-03-03 1990-04-25 Lonsdale Anthony Method and apparatus for measuring torque
JPH05215621A (en) * 1992-02-06 1993-08-24 Ono Sokki Co Ltd Ultrasonic torque sensor
WO1997009596A2 (en) * 1995-09-04 1997-03-13 Siemens Aktiengesellschaft Process and sensor for detecting operational data on moving/rotating parts of a device, especially an electric motor
GB9902341D0 (en) * 1999-02-03 1999-03-24 Perry James A H Packaged device

Also Published As

Publication number Publication date
GB9925873D0 (en) 1999-12-29
WO2001033180A1 (en) 2001-05-10
EP1144972A1 (en) 2001-10-17
KR20010105321A (en) 2001-11-28
JP2003513266A (en) 2003-04-08
CA2356484A1 (en) 2001-05-10
CN1340154A (en) 2002-03-13
AU1154401A (en) 2001-05-14
GB2358927A (en) 2001-08-08

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]