Development of a non-contact torque transducer based on the laser speckle contrast method

Development of a non-contact torque transducer based on the laser speckle contrast method

When a torque measurement is required, torque transducers show many drawbacks during their use: the usual limits are the need for contact and the effects on shaft line parameters. A new approach is proposed in this work: a non-contact torque meter for a machine shaft has been developed. It carrie...

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Main Authors: A. Garinei, R. Marsili
Format: Article
Language:English
Published: Copernicus Publications 2017-07-01
Series:Journal of Sensors and Sensor Systems
Online Access:https://www.j-sens-sens-syst.net/6/253/2017/jsss-6-253-2017.pdf
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spelling doaj-a9e8847bba6345f9a88b4dfc53e1886c2020-11-24T22:20:49ZengCopernicus PublicationsJournal of Sensors and Sensor Systems2194-87712194-878X2017-07-01625325810.5194/jsss-6-253-2017Development of a non-contact torque transducer based on the laser speckle contrast methodA. Garinei0R. Marsili1DMII Department, Università degli Studi Guglielmo Marconi, 00193 Rome, ItalyDipartimento di Ingegneria, Università degli Studi di Perugia, Via Duranti, no. 1, 06125 Perugia, ItalyWhen a torque measurement is required, torque transducers show many drawbacks during their use: the usual limits are the need for contact and the effects on shaft line parameters. A new approach is proposed in this work: a non-contact torque meter for a machine shaft has been developed. It carries out torque measurements evaluating the torsional displacement between two distinct sections of the shaft, through the monitoring of their roughness. <br><br> The sensing principle employed is the classical laser speckle contrast method. The outcoming intensity scattered by the rough surface is processed by a cross-correlation function. In this way, the angular torsion of two distinct sections is obtained. It is therefore possible to point out the applied torque knowing the shaft torsional stiffness.https://www.j-sens-sens-syst.net/6/253/2017/jsss-6-253-2017.pdf
collection DOAJ
language English
format Article
sources DOAJ
author A. Garinei
R. Marsili
spellingShingle A. Garinei
R. Marsili
Development of a non-contact torque transducer based on the laser speckle contrast method
Journal of Sensors and Sensor Systems
author_facet A. Garinei
R. Marsili
author_sort A. Garinei
title Development of a non-contact torque transducer based on the laser speckle contrast method
title_short Development of a non-contact torque transducer based on the laser speckle contrast method
title_full Development of a non-contact torque transducer based on the laser speckle contrast method
title_fullStr Development of a non-contact torque transducer based on the laser speckle contrast method
title_full_unstemmed Development of a non-contact torque transducer based on the laser speckle contrast method
title_sort development of a non-contact torque transducer based on the laser speckle contrast method
publisher Copernicus Publications
series Journal of Sensors and Sensor Systems
issn 2194-8771
2194-878X
publishDate 2017-07-01
description When a torque measurement is required, torque transducers show many drawbacks during their use: the usual limits are the need for contact and the effects on shaft line parameters. A new approach is proposed in this work: a non-contact torque meter for a machine shaft has been developed. It carries out torque measurements evaluating the torsional displacement between two distinct sections of the shaft, through the monitoring of their roughness. <br><br> The sensing principle employed is the classical laser speckle contrast method. The outcoming intensity scattered by the rough surface is processed by a cross-correlation function. In this way, the angular torsion of two distinct sections is obtained. It is therefore possible to point out the applied torque knowing the shaft torsional stiffness.
url https://www.j-sens-sens-syst.net/6/253/2017/jsss-6-253-2017.pdf
work_keys_str_mv AT agarinei developmentofanoncontacttorquetransducerbasedonthelaserspecklecontrastmethod
AT rmarsili developmentofanoncontacttorquetransducerbasedonthelaserspecklecontrastmethod
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