Frequency crack trimming device suitable for hemispherical harmonic oscillator

By designing a frequency splitting adjustment device suitable for a hemispherical resonator and using ion beam sputtering technology to add mass to the hemispherical resonator, the problem of frequency splitting in the existing technology is solved, and efficient frequency adjustment and gyroscope accuracy improvement are achieved.

CN223304530UActive Publication Date: 2025-09-05HUNAN 208 ADVANCED TECH CO LTD
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Patent Information

Application Number
CN202422801864.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-15
Publication Date
2025-09-05
Estimated Expiration
2034-11-15

AI Technical Summary

Technical Problem

Existing technologies make it difficult to effectively adjust frequency decomposition by increasing the mass of the high-frequency axis in a hemispherical resonator, resulting in limited gyroscope accuracy. Existing methods such as laser leveling are prone to thermal damage, and chemical leveling has limited accuracy.

Method used

A frequency cracking adjustment device is designed, which includes a quartz cone, a clamping mechanism, a grating mesh and an aperture. Based on the principle of ion beam sputtering, the ion beam is dispersed by the grating mesh to bombard the inner wall of the quartz cone to peel off the quartz particles, and then deposited on the high-frequency axis of the hemispherical resonator through a specific aperture to add mass.

Benefits of technology

It realizes simple and convenient hemispherical resonator mass adjustment, improves the frequency cracking adjustment efficiency, avoids thermal effect damage, and improves the accuracy and stability of the gyroscope.

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Abstract

The frequency crack trimming device comprises a quartz cone cylinder, a clamping mechanism, a grating net and a diaphragm sheet, the clamping mechanism is arranged on one side of the small-diameter end of the quartz cone cylinder and used for installing the hemispherical harmonic oscillator to be trimmed, the two ends of the quartz cone cylinder are open, the grating net is fixed to the large-diameter end of the quartz cone cylinder, and the diaphragm sheet is arranged on the grating net. The quartz cone cylinder is used for dispersing ion beams entering the quartz cone cylinder, so that ions bombard the inner wall of the quartz cone cylinder until quartz particles are stripped, the diaphragm sheet is detachably installed at the small-diameter end of the quartz cone cylinder, a diaphragm hole is formed in the diaphragm sheet, and the stripped quartz particles can pass through the diaphragm sheet to be deposited at the position, right opposite to the diaphragm hole, of the hemispherical harmonic oscillator. According to the utility model, the frequency crack trimming of the hemispherical harmonic oscillator is realized in a mass adding manner, and the device has the advantages of simple and convenient operation and capability of rapidly realizing the quality trimming of the hemispherical harmonic oscillator.
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