Research on Modeling and Control of Closed-loop Fiber Optic Gyroscope

Abstract

Based on the principle of closed-loop fiber optic gyroscope, the research results in the field of interferometric fiber optic gyroscope digital closed-loop system modeling and control were summarized in this paper. The PID control model has a relatively simple structure and has been widely used. The F-PID control model can effectively shorten the adjustment time, reduce the amount of overshoot, and has a strong anti-interference ability. The system identification modeling method of the closed-loop fiber optic gyroscope is simple to implement and can overcome the influence of white noise on the signal amplitude and phase detection. In view of the closed-loop fiber optic gyroscope model, the method of suppressing the dead zone of the fiber optic gyroscope was discussed. Based on the dynamic model of the closed-loop fiber optic gyroscope, the method to improve the angular acceleration tracking ability of the fiber optic gyroscope was analyzed. Finally, combined with the technological progress of optoelectronic devices, the future researches in the field of fiber optic gyroscope modeling and control were prospected.