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Laser torquemeter - a new instrument
journal contributionposted on 07.12.2015, 14:17 by T.H. Wilmshurst, Steve RothbergSteve Rothberg, Neil A. Halliwell
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.
The work is supported by the Paul Instrument Fund of The Royal Society.
- Mechanical, Electrical and Manufacturing Engineering