A kind of metal resonant gyroscope rapid start-up system and method

Abstract

The invention relates to a metal resonant gyroscope rapid start-up system and method. Its technical features include: a frequency sweeping module sweeps the frequency of a resonator; an analog-digital conversion module AD collects an excitation signal and an amplitude detection signal generated by the resonator, and then The digital quantity of the excitation signal and the amplitude detection signal is transmitted to the FPGA main control chip; the FPGA main control chip processes the excitation signal and the amplitude detection signal to output a new excitation signal; the digital-to-analog conversion module DA converts the new excitation signal into The analog signal, the analog excitation signal is filtered by a low-pass filter and then applied to the resonator. The invention has a reasonable design, can realize the rapid and stable start-up function of the metal resonant gyroscope under the condition of a wide range of frequency changes, and improves the reliability of the gyroscope.

Description

technical field [0001] The invention belongs to the technical field of inertial instrument control, and relates to a metal resonant gyroscope force feedback working mode, in particular to a metal resonant gyroscope rapid start-up system and method. Background technique [0002] Metal resonant gyroscope is a solid wave gyroscope with simple structure, long life, high reliability and short start-up time. It has broad application prospects in the field of inertial navigation. The core sensitive element of a metal resonant gyroscope is a resonator. Due to factors such as structure, processing, and materials, the resonant frequency of the resonator is usually different. [0003] The resonator is essentially a band-pass filter with frequency selection characteristics. The input signal can pass through the resonator only when the resonant frequency of the resonator is near, and the input signal will have a phase delay of 90° after passing through. When the frequency of the input s...

AI Technical Summary

Problems solved by technology

However, when the resonant frequency of each resonator has a large difference, it is necessary to expand the frequency sweep range or modify the digital circuit program. If the frequency sweep range is expanded, the frequency sweep time will become longer, resulting in the metal resonator gyroscope not being able to quickly enter a stable working state. The digital circuit program causes a lot of inconvenience to the post-test and other work, which restricts the engineering of the gyroscope.

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