Hysteresis compensation technique for POF curvature sensors

Arnaldo G. Leal Jr.; Anselmo Frizera; Maria José Pontes

doi:10.1117/12.2263528

23 April 2017 Hysteresis compensation technique for POF curvature sensors

Arnaldo G. Leal Jr., Anselmo Frizera, Maria José Pontes

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103232U (2017) https://doi.org/10.1117/12.2263528
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

Abstract

Polymer optical fibers (POF) have higher strain limits, fracture toughness and flexibility in bend if compared to glass optical fibers. These characteristics enable the application of POFs as curvature sensors. However, the polymer is a viscoelastic material, which does not have a constant response with stress or strain. For this reason, a curvature sensor based on POF may present high hysteresis. This paper proposes a dynamic compensation technique based on the angular velocity of the sensor. Results show a hysteresis up to 10 times lower. Furthermore, it results on a simple calibration equation, which can be applied in real-time measurements.

Citation Download Citation

Arnaldo G. Leal Jr., Anselmo Frizera, and Maria José Pontes "Hysteresis compensation technique for POF curvature sensors", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103232U (23 April 2017); https://doi.org/10.1117/12.2263528

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