一种适用于环式机械陀螺的电容检测及幅度控制电路

By employing carrier demodulation and differential amplification techniques, combined with thyristor resistor filters and phase shift control, the problems of low signal-to-noise ratio and signal crosstalk in the detection of weak capacitance signals in ring mechanical gyroscopes have been solved, improving detection accuracy and sensitivity, and enhancing environmental adaptability.

CN117705073BActive Publication Date: 2026-07-17XIAN FLIGHT SELF CONTROL INST OF AVIC

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIAN FLIGHT SELF CONTROL INST OF AVIC
Filing Date
2023-12-15
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies struggle to detect weak capacitance signals in ring-type mechanical gyroscopes with high signal-to-noise ratios and are susceptible to signal crosstalk, affecting detection accuracy and sensitivity.

Method used

By employing carrier demodulation and differential amplification techniques, and using carrier signals to control analog switches for capacitance detection, combined with thyristor resistor analog filters and phase shift control, carrier demodulation and common-mode suppression of the signal are achieved, thereby improving the signal-to-noise ratio and detection accuracy.

Benefits of technology

This improves the microcapacitance detection accuracy of the ring-type mechanical gyroscope, reduces the influence of signal crosstalk, enhances environmental temperature adaptability, and improves the signal-to-noise ratio and detection sensitivity of the detection signal.

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Abstract

本申请提供一种适用于环式机械陀螺的电容检测及幅度控制电路,所述电路包括载波发生电路A、环式机械陀螺谐振子B、模拟开关通道C、电容差分放大D、信号整定E、信号移相F和幅度控制G,其中:载波发生电路A用于产生正弦 / 方波的载波信号,载波发生电路A的输出端分别与环式机械陀螺谐振子B和模拟开关通道C连接,模拟开关通道C的输出端依次与电容差分放大D、信号整定E、信号移相F和幅度控制G连接,幅度控制G的输出端与环式机械陀螺谐振子B连接。
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