Fiber-optic gyroscope magnetic shielding device

Abstract

The invention discloses a fiber-optic gyroscope magnetic shielding device. The fiber-optic gyroscope magnetic shielding device comprises a gyroscope cap, an optical fiber seat and a gyroscope base plate, wherein the gyroscope cap is in the shape of a hat with a lower edge and comprises a cap body, a cap body flat edge and a cap body lower edge; the optical fiber seat is in the shape of a hat with the lower edge and a top opening and comprises a shaft body, a shaft body flat edge and a shaft body lower edge; the gyroscope base plate is a disc-shaped; the cap body flat edge, the shaft body flat edge and the gyroscope base plate are tightly matched in sequence from top to bottom; the cap body lower edge, the shaft body lower edge and the gyroscope base plate are tightly matched in sequence from outside to inside; a cavity is formed between the cap body and the outer surface of the shaft body; the inner part of the shaft body is hollow; the gyroscope cap, the optical fiber seat and the gyroscope base plate are made of a resin-based composite material of a carbon fiber three-dimensional fabric body; nickel is plated in fibers of the gyroscope cap, the shaft body flat edge, the shaft body lower edge and the gyroscope base plate. The fiber-optic gyroscope magnetic shielding device is used for protecting an optical fiber ring and has the advantages of light weight, great strength, good one-time molding continuity and good magnetic shielding inhibition efficiency.

Description

Technical field [0001] The invention relates to an optical fiber gyroscope magnetic shielding device, which belongs to an optical fiber gyroscope accessory. Background technique [0002] The fiber optic gyroscope is an important part of the aircraft navigation system and an important guarantee for the realization of high-precision navigation of the aircraft or weapon equipment. Restricted by factors such as control technology, the structural characteristics of the internal components of the gyroscope, and the manufacturing process, the gyroscope system has always had problems such as susceptibility to the magnetic environment, low accuracy, and poor long-term stability, especially in the miniaturization and lightweight requirements of the inertial navigation system. In higher flight equipment, these problems have become a bottleneck for the development of precision navigation technology for aircraft. [0003] In recent years, the fiber optic gyroscope research unit has made some u...

AI Technical Summary

Problems solved by technology

However, most of them have not adopted magnetic shielding design, resulting in problems such as low precision and poor long-term stability of fiber optic gyroscopes. Some units use permalloy and other methods for shielding, but the overall structural performance of the gyroscope is poor, and the volume and weight caused by shielding are too large. , cannot meet the requirements of light weight, high strength and miniaturization for fiber optic gyro

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