2134/19766 T.H. Wilmshurst T.H. Wilmshurst Steve Rothberg Steve Rothberg Neil A. Halliwell Neil A. Halliwell Laser torquemeter -immunity to memory quantization noise Loughborough University 2015 untagged Mechanical Engineering not elsewhere classified Artificial Intelligence and Image Processing 2015-12-07 14:23:37 Journal contribution https://repository.lboro.ac.uk/articles/journal_contribution/Laser_torquemeter_-immunity_to_memory_quantization_noise/9544988 Operation 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.