Electrostatic excitation and detection-based cylindrical shell vibrating gyroscope

A technology of cylindrical shell and vibrating gyroscope, which is applied in the direction of speed measurement by gyro effect, gyroscope/steering sensing equipment, measuring device, etc. Harmonic oscillator quality factor, vibration gyro detection sensitivity, gyro drift error and other problems, to achieve the effect of convenient polishing and coating, easy processing and high positioning accuracy

Active Publication Date: 2017-08-04
NAT UNIV OF DEFENSE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to improve the existing excitation and detection method of pasting piezoelectric ceramic sheets on the bottom surface or side of the resonator, which greatly affects the quality factor of the resonator of the quartz cylindrical shell, the detection sensitivity of the vibrating gyroscope, and the drift error of the gyroscope. To improve the problems of the existing hemispherical resonant gyroscope, such as the complex electrostatic excitation and detection scheme, and the difficulty in processing and assembly, a cylindrical shell vibrating gyroscope based on electrostatic excitation and detection is proposed.

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  • Electrostatic excitation and detection-based cylindrical shell vibrating gyroscope
  • Electrostatic excitation and detection-based cylindrical shell vibrating gyroscope
  • Electrostatic excitation and detection-based cylindrical shell vibrating gyroscope

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Embodiment Construction

[0033] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0034] as attached figure 1 As shown, a vibrating gyro with a cylindrical shell based on electrostatic excitation and detection includes an integrated cylindrical shell quartz resonator 100, an electrode base 200, a long conductive pin 300, a short conductive pin 400, a metal cover 500 and a packaging base 600.

[0035] The one-piece cylindrical shell resonator 100 and the chassis 210 of the electrode base 200 are both made of high-purity fused silica material. The internal loss of the material is extremely small and has excellent isotropy, thus ensuring the high quality of the resonator. Factor and physical symmetry, so as to ensure the high sensitivity, high signal-to-noise ratio, low drift error and low power consumption characteristics of the cylindrical shell vibrating gyroscope.

[0036] The processing and installation process of ea...

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Abstract

The invention belongs to the field of coriolis vibrating gyroscopes and particularly relates to an electrostatic excitation and detection-based cylindrical shell vibrating gyroscope. The vibrating gyroscope comprises an integral cylindrical shell quartz oscillator, an electrode base, a long conductive pin, a short conductive pin, a metal cover and a packaging base. The cylindrical shell vibrating gyroscope aims at solving the problems that an existing excitation and detection method of pasting a piezoelectric ceramic piece on the bottom surface or the side surface of the oscillator has relatively large influence on the quality factor of the cylindrical shell quartz oscillator, the detection sensitivity of the vibrating gyroscope and the drift error of the gyroscope and solving the problems that an existing semispherical resonant gyroscope is complicated in excitation and detection scheme and large in processing and assembling difficulty. The electrostatic excitation and detection-based cylindrical shell vibrating gyroscope is provided. The gyroscope has the advantages of being simple in structure, easy to process and beneficial to improvement of the signal to noise ratio, and high precision of the gyroscope can be achieved.

Description

technical field [0001] The invention belongs to the field of Coriolis vibrating gyroscopes, in particular to a cylindrical shell vibrating gyroscope based on electrostatic excitation and detection. Background technique [0002] Gyroscope is a sensor that detects angular motion of objects in inertial space, and is a key device for inertial navigation, guidance and attitude control. Cylindrical shell vibrating gyroscopes are sensitive to angular velocity based on the Coriolis principle, and are a rotorless gyroscope that is different from traditional mechanical rotor gyroscopes. The cylindrical shell vibrating gyro replaces the high-speed rotation of the rotor by using the standing wave precession generated when the harmonic oscillator vibrates, thus avoiding mechanical friction and fundamentally reducing the drift error. It has high precision, long life, good reliability, Due to the advantages of small size, light weight, and low power consumption, it has been highly valued ...

Claims

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Application Information

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IPC IPC(8): G01C19/5684
CPCG01C19/5684
Inventor 曲天良潘瑶肖鹏博樊振方吴素勇刘贱平杨开勇罗晖
Owner NAT UNIV OF DEFENSE TECH
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