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Resonant gyroscope based on closed-loop control and control method thereof

A resonant gyroscope, closed-loop control technology, applied in the direction of gyro effect for speed measurement, gyroscope/steering sensing equipment, instruments, etc., can solve the poor linearity of analog-to-digital conversion, it is difficult to achieve high sampling rate and high precision, no discovery and other problems to achieve a good nonlinear effect

Active Publication Date: 2022-07-22
TIANJIN NAVIGATION INSTR RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in general, the conversion of analog signals to digital signals generally uses analog-to-digital conversion devices directly. When the sampling accuracy of analog-to-digital conversion devices is guaranteed, the sampling rate is low, and it is difficult to achieve a balance between high sampling rate and high precision.
And the linearity of analog-to-digital conversion is poor
[0005] After searching, no patent documents of the prior art identical or similar to the present invention were found

Method used

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  • Resonant gyroscope based on closed-loop control and control method thereof
  • Resonant gyroscope based on closed-loop control and control method thereof
  • Resonant gyroscope based on closed-loop control and control method thereof

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Embodiment Construction

[0037] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0038] A resonant gyroscope based on closed-loop control, such as figure 1 and figure 2 As shown, including: a casing and its internal control circuit, the control circuit includes: an error signal charge amplifier circuit, an error amplifier circuit, an analog-to-digital conversion circuit module, a tracking control module and a digital-to-analog conversion circuit module;

[0039] The output end of the resonator of the hemispherical resonant gyroscope is connected to one end of the error signal charge amplifying circuit, and is connected to the output end of the digital-to-analog conversion circuit module, which is used to realize the analog output of the hemispherical resonant gyroscope and the signal phase of the digital-to-analog conversion voltage feedback. Subtract; and convert the error current signal into a voltage signal;

[0040] The ...

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Abstract

The invention relates to a resonant gyroscope based on closed-loop control and a control method thereof, the resonant gyroscope comprises a shell and a control circuit in the shell, and the control circuit comprises an error signal charge amplification circuit, an error amplification circuit, an analog-to-digital conversion circuit module, a tracking control module and a digital-to-analog conversion circuit module. According to the invention, analog signals output by 0-degree and 45-degree electrodes of the resonant gyroscope can be converted into digital signals.

Description

technical field [0001] The invention belongs to the technical field of inertial instrument control, and relates to a method and a device for acquiring vibration displacement data of a resonant gyroscope, in particular to a closed-loop control-based resonant gyroscope and a control method thereof. Background technique [0002] As a solid wave gyroscope based on the Coriolis effect, resonant gyroscopes include quartz hemispherical resonant gyroscopes, metal barrel resonant gyroscopes, nested ring gyroscopes and micro-hemispherical gyroscopes. [0003] Quartz hemispherical resonant gyroscopes are based on the inertial sensing characteristics of standing waves on a hemispherical object. The standing waves at the edge of the hemispherical structure have two modes, two amplitude axes and two node axes, when the object rotates around the input axis , the position of the standing wave precesses by a factor of 0.3 relative to the fixed position on the object. That is, when the input...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C19/5691G01C19/5776
CPCG01C19/5691G01C19/5776
Inventor 张悦赵坤来琦丛正史炯赵丙权王振兴
Owner TIANJIN NAVIGATION INSTR RES INST
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