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Optical Engineering

Development of a robust rotational-angle optical fiber sensor using different-material cantilevers
Author(s): Hai-Tao Sun; Hao-Jan Sheng; Wen-Fung Liu
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Paper 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.

Paper Details

Date Published: 17 February 2015
PDF: 4 pages
Opt. Eng. 54(2) 026104 doi: 10.1117/1.OE.54.2.026104
Published in: Optical Engineering Volume 54, Issue 2
Show Author Affiliations
Hai-Tao Sun, Feng Chia Univ. (China)
Hao-Jan Sheng, Feng Chia Univ. (China)
Wen-Fung Liu, Feng Chia Univ. (China)

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