A closed-loop fiber optic gyroscope minimum beat control method

Abstract

The invention belongs to a fiber optic gyroscope technology, and relates to a closed loop fiber optic gyroscope minimum step control method. The method comprises the following steps: establishing accurate model parameters according to the work principle and framework of a digital closed loop fiber optic gyroscope; establishing the discrete control model of the whole control system of the closed loop fiber optic gyroscope, and obtaining the control model of the controlled object of the gyroscope; calculating based on the principle of a minimum time response controller according to the type of an input signal to obtain a minimum step controller of the fiber optic gyroscope; and designing the corresponding minimum step controller directed against a step input signal and a slope input signal as needed to make the gyroscope trace input signals after 2 and 3 control periods. The minimum step closed loop fiber optic gyroscope controller disclosed in the invention reduces the trace delay time of the fiber optic gyroscope to dynamic signals, reduces the dynamic trace error, improves the use performance of the fiber optic gyroscope in dynamic input environment, and improves the environment adaptability of the fiber optic gyroscope.

Description

technical field [0001] The invention belongs to the optical fiber gyroscope technology, and relates to a minimum beat control method of a closed-loop optical fiber gyroscope. Background technique [0002] With the development of fiber optic gyroscope technology, fiber optic gyroscopes are widely used in aviation, spaceflight, navigation, land navigation, guidance and control, etc. Military inertial measurement field and many civilian inertial measurement fields. As the core sensitive device of the inertial measurement system, the performance index of the fiber optic gyroscope will seriously affect the application accuracy of the inertial measurement system. In many high dynamic, large maneuvering and high frequency vibration applications, the dynamic performance of fiber optic gyroscope has been regarded as an important performance index requirement. The pros and cons of the dynamic performance of the fiber optic gyroscope will seriously restrict the application accuracy o...

AI Technical Summary

Problems solved by technology

In the actual application process, it is found that due to the phase lag effect of the inertial link, the dynamic response of the fiber optic gyroscope has a large lag time relative to the dynamic input, the dynamic adjustment time is long, and the dynamic tracking error is large, which affects the system application accuracy. , so that the dynamic environment adaptability of the fiber optic gyroscope is poor

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