Structure and method for detecting position of inertia axis of defective quartz hemispherical shell

Abstract

The invention relates to a structure and a method for detecting the position of an inertia axis of a defective quartz hemispherical shell. A central supporting column of a hemispherical shell is locally arranged behind a central hole combining part of a sensing assembly, the divergence frequency of the hemispherical shell is swept and detected by matching with the electrode base and the sensing assembly, an alternating current is input to enable the hemispherical shell to generate resonance, a constant voltage is transmitted to the side edge of the opening of the hemispherical shell from the first electrode excitation sheet and the second electrode excitation sheet which are separated by 45 degrees, the hemispherical shell generates a first displacement amount and a second displacement amount, two solutions of a low-frequency inertia axis angle are calculated through the calculation module, then, the electrode base is rotated once, and the actions are repeated, the intersection of theinertia axis angles calculated by the calculation module twice is taken to obtain a unique solution, and finally, a low-frequency inertia axis and an imaginary vertical line which are perpendicular toeach other are marked by utilizing an inertia axis angle, and four mass removal positions representing mass ablation positioning points of the spherical shell are defined at the intersection point position of the bottom of the opening of the hemispherical shell so as to fulfill the aim of eliminating the frequency difference of the hemispherical shell.

Description

technical field [0001] The invention relates to a structure and method for detecting the position of the inertial axis of a defective quartz hemispherical shell, in particular to a detection flawed quartz that can cooperate with a calculation module and simply pass two detection actions to calculate the precise position of the hemispherical shell to remove the mass point The structure and method of the position of the inertial axis of the hemispherical shell. Background technique [0002] Hemispherical Resonant Gyroscope (HRG) is a bending-mode standing wave based on a hemispherical shell, which becomes a precession traveling wave due to the Coriolis force. wave) effect to sense the base rotation of a Gothic vibrating top. It has high measurement accuracy, strong stability, high reliability, good shock and vibration resistance, excellent temperature performance, and unique shutdown radiation resistance. It is a satellite, submarine navigation, tactical missile navigation, o...

AI Technical Summary

Problems solved by technology

[0009] 1. It is only suitable for special cases where the spring force and damping force are parallel to each other, and the practicability is too low

[0010] 2. The detection action takes a lot of time and is too wasteful of resources

[0011] 3. The position accuracy of the test results is too low to meet the standards in the aerospace field

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