• DocumentCode
    1318745
  • Title

    Laser torquemeter: a new instrument

  • Author

    Wilmshurst, T.H. ; Rothberg, S.J. ; Halliwell, N.A.

  • Author_Institution
    Dept. of Electron., Southampton Univ., UK
  • Volume
    27
  • Issue
    2
  • fYear
    1991
  • Firstpage
    186
  • Lastpage
    187
  • Abstract
    A noncontact torquemeter is described whose operation relies on the periodicity of the dynamic laser speckle pattern backscattered from a rotating shaft. At 1800 RPM, some 100 time-resolved torque readings per cycle are possible to an accuracy of approximately 1´ of shaft twist. In addition there is inbuilt immunity to shaft speed fluctuations and whole body vibrations.
  • Keywords
    measurement by laser beam; optical instruments; speckle; torquemeters; backscattered speckle patterns; dynamic laser speckle pattern; laser torquemeter; noncontact torquemeter; rotating shaft; shaft speed fluctuations; shaft twist; speckle pattern periodicity; time-resolved torque readings; whole body vibrations;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:19910119
  • Filename
    83195
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1318745