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Laser torquemeter -immunity to memory quantization noise
journal contribution
posted on 2015-12-07, 14:23 authored by T.H. Wilmshurst, Steve Rothberg, Neil A. HalliwellOperation of the laser torquemeter relies on the periodicity of the speckle pattern backscattered from a rotating shaft. In the previous system a minimum measurable twist of 0.7' was imposed by address quantisation of the stored speckle pattern signals. The arrangement described provides immunity to this quantisation and the associated limit cycle oscillation, reducing the noise spectrum level to 3"/Hz12/ RMS while allowing 100 time-resolved torque readings per rotation.
Funding
The work is supported by the Paul Instrument Fund of The Royal Society.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
ELECTRONICS LETTERSVolume
27Issue
22Pages
2037 - 2038 (2)Citation
WILMSHURST, T.H., ROTHBERG, S. and HALLIWELL, N.A., 1991. Laser torquemeter -immunity to memory quantization noise. Electronics Letters, 27 (22), pp. 2037 - 2038.Publisher
© IETVersion
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
1991Notes
This article is closed access.ISSN
0013-5194Publisher version
Language
- en