Simplified control theory in closed-loop fiber optic gyroscopes

Ralph A. Bergh

doi:10.1117/12.141275

5 March 1993 Simplified control theory for closed-loop fiber-optic gyroscopes

Ralph A. Bergh

Proceedings Volume 1795, Fiber Optic and Laser Sensors X; (1993) https://doi.org/10.1117/12.141275
Event: Fibers '92, 1992, Boston, MA, United States

Abstract

Signal transformations around an open-loop fiber gyroscope are identified. This shows that the interferometer performs a derivative. An electronic integrator is used to cancel this effect. Control theory shows that a second integrator can then be used to complete the closed-loop architecture. Variations of this architecture are used by both dual-ramp and serrodyne approaches. The method that these two techniques use to manage the second integrator, and avoid saturation of its output, is described.

Citation Download Citation

Ralph A. Bergh "Simplified control theory for closed-loop fiber-optic gyroscopes", Proc. SPIE 1795, Fiber Optic and Laser Sensors X, (5 March 1993); https://doi.org/10.1117/12.141275

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