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This paper presents a new non-contact for optical torque measurement that combines light spatial modulation with light spatial filter. By precisely measuring the torsion angle of shaft, the torque on transmission line and its description of dynamics can also be obtained.
Hong-Lin Yu,Anguo He,Sheng Liu, andYan Chen
"New principle of optical torque measurement", Proc. SPIE 4077, International Conference on Sensors and Control Techniques (ICSC 2000), (9 May 2000); https://doi.org/10.1117/12.385628
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Hong-Lin Yu, Anguo He, Sheng Liu, Yan Chen, "New principle of optical torque measurement," Proc. SPIE 4077, International Conference on Sensors and Control Techniques (ICSC 2000), (9 May 2000); https://doi.org/10.1117/12.385628