A Cylindrical Shell Vibrating Gyroscope Based on Electrostatic Excitation and Detection

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 vibratory gyroscopes, and in particular relates to a cylindrical shell vibratory gyroscope based on electrostatic excitation and detection. Background technique [0002] Gyro is a sensor that detects the angular movement of objects in inertial space, and is a key component of inertial navigation, guidance and attitude control. The cylindrical vibratory gyroscope is sensitive to angular velocity based on the Coriolis principle, and is a rotorless gyroscope that is different from the traditional mechanical rotor gyroscope. Cylindrical shell vibrating gyroscope replaces the high-speed rotation of the rotor by using the standing wave precession generated when the resonator vibrates, thereby avoiding mechanical friction and fundamentally reducing drift errors. It has high accuracy, long life, and good reliability. The advantages of small size, light weight, low power consumption, etc., are highly valued in the fiel...

AI Technical Summary

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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