A Quadrature Control Circuit for Hemispherical Resonant Gyroscope Based on Force Balance Mode

Abstract

The invention provides a hemispherical resonant gyroscope quadrature control circuit based on the force balance mode, including a gyroscope head, a vibration detection circuit, an analog-to-digital converter, a signal demodulator, a low-pass filter, a loop controller, a Σ- ΔDigital-to-analog converter and high-voltage drive circuit; vibration detection circuit output signal to analog-to-digital converter, analog-to-digital converter output signal to signal demodulator, signal demodulator output signal to low-pass filter, low-pass filter output The signal is sent to the loop controller, the output signal of the loop controller is sent to the Σ-Δ digital-to-analog converter, and the output signal of the Σ-Δ digital-to-analog converter is sent to the high-voltage driving circuit. The circuit of the invention has the characteristics of high control precision, strong anti-interference ability, simple hardware circuit structure and small size, and is suitable for the hemispherical resonant gyro combination of the satellite attitude control system.

Description

technical field The invention relates to a satellite control system, and is especially suitable for a hemispherical resonant gyro combination of a satellite attitude control system. Background technique The existing hemispherical resonant gyroscopes and hemispherical resonant gyroscope combinations for satellites mainly adopt full analog control or semi-digital control methods, and the control circuit controls and reads signals from the gyro sensor components through complex analog devices. The shortcomings of the existing semi-digital control method: first, the signal processing is too simple; second, the precision of analog-to-digital conversion is low; third, the hardware circuit of analog-to-digital conversion is complex; fourth, the external environment has a great influence on the hardware circuit. Contents of the invention In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a hemispherical resonan...

AI Technical Summary

Problems solved by technology

The shortcomings of the existing semi-digital control method: first, the signal processing is too simple; second, the precision of analog-to-digital conversion is low; third, the hardware circuit of analog-to-digital conversion is complex; fourth, the external environment has a great influence on the hardware circuit

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