Fiber optic sensor for absolute measurement of rotation angles

Horst Kreitlow; U. Samuels

doi:10.1117/12.195550

30 November 1994 Fiber optic sensor for absolute measurement of rotation angles

Horst Kreitlow, U. Samuels

Proceedings Volume 2341, Interferometry '94: Interferometric Fiber Sensing; (1994) https://doi.org/10.1117/12.195550
Event: International Conference on Interferometry '94, 1994, Warsaw, Poland

Abstract

A fiber optical sensor (FOS) for sensitive measurements of absolute angles has been developed. The sensor principle is based on the well defined angular dependence of the bending of a cantilever under the influence of its own weight. The cantilever bending is measured via a noncontact and high resolution method using two fiber optical sensors. These sensors are oriented perpendicular to each other and fixed opposite to the cantilever so that they are rotated synchronously during every angular movement. The current values of the rotation angle, the angular velocity, and the angular acceleration are determined in an analyzing and data processing unit and visualized on the computer monitor. This high precision absolute rotation-angle sensor has the advantages of being compact, insensitive to external influences such as electromagnetic fields, humidity, atmospheric density fluctuations, and nuclear radiation and is therefore applicable in nearly every kind of angular measurement problem and in unfavorable environmental conditions.

Citation Download Citation

Horst Kreitlow and U. Samuels "Fiber optic sensor for absolute measurement of rotation angles", Proc. SPIE 2341, Interferometry '94: Interferometric Fiber Sensing, (30 November 1994); https://doi.org/10.1117/12.195550

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