Development of a robust rotational-angle optical fiber sensor using different-material cantilevers

Hai-Tao Sun; Hao-Jan Sheng; Wen-Fung Liu

doi:10.1117/1.OE.54.2.026104

17 February 2015 Development of a robust rotational-angle optical fiber sensor using different-material cantilevers

Hai-Tao Sun, Hao-Jan Sheng, Wen-Fung Liu

Author Affiliations +

Optical Engineering, Vol. 54, Issue 2, 026104 (February 2015). https://doi.org/10.1117/1.OE.54.2.026104

Abstract

A rotational-angle sensor composed of two Fiber Bragg gratings glued axially on a cylindrical cantilever beam to be bent by the resultant repulsion force of three magnets is designed and proposed for detecting the rotary random position of a rotor. By means of using three different materials on cantilever beams for checking each feature’s effect on this fiber optic sensor, it has been experimentally confirmed that a nearly identical performance is achieved among them. From these experimental results, a maximum deviation of 1.3 deg is obtained and it is in good agreement with the theoretical prediction. As a whole, the cantilever design exploited in this proposed optical fiber sensor configuration is independent of the intrinsic materials used. This sensor can provide a robust kind of technique for accurately measuring the rotational angle or rotational rate of a rotor in an arbitrary rotational direction for a wide range of industrial applications.

Citation Download Citation

Hai-Tao Sun, Hao-Jan Sheng, and Wen-Fung Liu "Development of a robust rotational-angle optical fiber sensor using different-material cantilevers," Optical Engineering 54(2), 026104 (17 February 2015). https://doi.org/10.1117/1.OE.54.2.026104

Published: 17 February 2015

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