Application method of composite film in axisymmetric shell harmonic oscillator

Abstract

The invention discloses an application method of a composite film in an axisymmetric shell harmonic oscillator. The axisymmetric shell harmonic oscillator comprises a cylindrical shell harmonic oscillator and a hemispherical shell harmonic oscillator. The inner surface of the cylindrical shell harmonic oscillator and the lower lip edge part of the resonant ring are plated with first metal nanowires and graphene film electrodes; and second metal nanowires and graphene film electrodes are plated on the inner surface of the hemispherical shell harmonic oscillator and the lower lip edge part of the hemispherical shell. The method has the advantages that the thickness is smaller (the thickness of a single layer is smaller than 10 nm), the conductivity is high, the Q value of the harmonic oscillator coated with the film is remarkably improved under the condition that the conductivity of the film is not affected, and higher gyro precision can be obtained.

Description

technical field [0001] The invention relates to the technical field of gyroscopes, and more particularly, to an application method of a composite film in an axisymmetric shell resonator. Background technique [0002] Gyroscope is a sensor that detects the angular motion of inertial space objects and is a key component of inertial navigation. Its performance indicators directly determine the technical indicators of inertial navigation systems. Coriolis Vibratory Gyroscope, also known as Resonant Gyroscope, is mainly divided into Cylindrical Resonator Gyroscope and Hemispherical Resonator Gyroscope. It consists of three parts: module and vacuum packaged shell. The high-speed rotation of the rotor is replaced by the standing wave precession generated when the resonator vibrates inside the gyroscope, thereby avoiding mechanical friction and reducing the drift error fundamentally. Cylindrical resonant gyroscopes and hemispherical resonant gyroscopes have comprehensive advantage...

AI Technical Summary

Problems solved by technology

[0006] (1) The bonding force between graphene and fused silica material is not strong, especially the uniformity of direct plating on special-shaped curved surfaces such as spherical surfaces is not good, and the adsorption force is not strong. The process has been proved to be unfeasible

[0007] (2) The surface resistance of simple graphene is relatively large, and when it is directly plated, its advantages are not obvious compared with metal thin films

[0008] (3) When the resonator is working, under the high-frequency vibration of 10KHz, the simple graphene is easy to fall off, causing the thin-film electrode to fail, and even causing a short circuit and damaging the gyroscope.

[0012] Silver nanowires have high electrical conductivity and good bending resistance, but silver nanowire materials will be oxidized when exposed to air for a long time, and silver nanowires with silver oxide attached to the surface will significantly reduce the conductivity of the film.

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