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Variable structure and sliding modes nonlinear control system applied to a fiber optic interferometer
Author(s): Roberta I. Martin; João M. S. Sakamoto; Marcelo C. M. Teixeira; Cláudio Kitano
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Paper Abstract

In this work, we present the application of a nonlinear control system, based on variable structure control and sliding modes, to a fiber optic Mach-Zehnder interferometer. We showed that this control system is able to keep the interferometer in quadrature, suppress the signal fading, lead to high accuracy control, featuring ease of implementation and high robustness. Thus, the controlled interferometer was employed for the measurement of frequency response and mechanical resonances of a cylindrical piezoelectric actuator. The advantages of an all-fiber interferometric sensor combined with the proposed nonlinear control system features compactness, light weight, alignment free, electromagnetic immunity, high sensitivity, geometric versatility, robustness, real-time high precision measurement, and possibility of operation in harsh environments.

Paper Details

Date Published: 22 August 2017
PDF: 5 pages
Proc. SPIE 10453, Third International Conference on Applications of Optics and Photonics, 104531W (22 August 2017); doi: 10.1117/12.2272548
Show Author Affiliations
Roberta I. Martin, Univ. São Paulo State (Brazil)
João M. S. Sakamoto, Instituto de Estudos Avançados (Brazil)
Marcelo C. M. Teixeira, Univ. São Paulo State (Brazil)
Cláudio Kitano, Univ. São Paulo State (Brazil)


Published in SPIE Proceedings Vol. 10453:
Third International Conference on Applications of Optics and Photonics
Manuel Filipe P. C. M. Martins Costa, Editor(s)

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