16-point trimming system and 16-point trimming method for side wall of metal cylindrical resonator gyro

Abstract

The invention relates to a 16-point trimming system and a 16-point trimming method for the side wall of a metal cylindrical resonator gyro. The device comprises a bottom plate, a harmonic oscillator positioning tester and a high-precision milling device. The method includes S1, mounting a harmonic oscillator, and defining the angular position of the harmonic oscillator; S2, determining the position of a high-frequency rigid shaft; S3, testing frequency cracking of the harmonic oscillator; S4, calculating the frequency cracking component corresponding to a trimming position, and calculating thedepth s and the length l of a required trimming groove; S5, performing sidewall grooving and trimming; S6, repeating the steps S2 to the step S5 until the frequency cracking of the harmonic oscillator meets the requirements. By the 16-point trimming system and the 16-point trimming method, the frequency cracking of the harmonic oscillator can be trimmed simply and quickly, and the symmetry of theharmonic oscillator after trimming is ensured.

Description

technical field [0001] The invention relates to the technical field of vibrating gyroscopes, in particular to a device and method for readjustment of 16 symmetrical positions on the side wall of a metal cylindrical resonant gyroscope. Background technique [0002] The metal cylindrical resonant gyroscope is a new type of solid wave gyroscope, which uses the inertial effect of elastic waves in the cylindrical structure to measure angular motion. It not only has the characteristics of high precision, low energy consumption, short preparation time, and wide operating temperature range unique to solid wave gyroscopes. , strong anti-ionizing radiation ability, good shock and vibration resistance, long service life, etc., and the processing of the cylindrical resonator is relatively simple, the excitation and sensitive electrodes are in the same plane, the difficulty of gyroscope manufacturing is significantly reduced, and the development and application prospects are extremely bro...

AI Technical Summary

Problems solved by technology

The study found that the modification of the upper end face of the resonant ring has a great influence on the mode shape and natural frequency of the resonator, so that this balance method can produce a large frequency change with a small amount of modification, so the modification of the shape during the balance adjustment process The control accuracy of the amount is very high, especially in fine dynamic balance, the control of the modification amount is very difficult, and it is not easy to achieve high-precision mechanical balance, which virtually increases the manufacturing cost of the gyroscope and reduces the mass production efficiency.

In addition, the end-face trimming algorithm used in traditional practice ignores the static balance or symmetry of the harmonic oscillator after the trimming frequency is split, so that the static balance still needs to be performed after the trimming frequency is split, which virtually reduces the trimming efficiency

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