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Ultrahigh-precision optical fiber gyroscope structure

A fiber optic gyroscope, high-precision technology, applied in Sagnac effect gyroscopes, gyroscopes/steering sensing equipment, instruments, etc., can solve problems such as certain gaps, achieve stable and uniform temperature, improve measurement accuracy, and low coercivity effect

Active Publication Date: 2021-12-17
BEIJING AEROSPACE TIMES OPTICAL ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic high-precision fiber optic gyroscopes already have a relatively high level of accuracy in the laboratory environment, but the accuracy in temperature, magnetic field and other application environments is still far from the highest level abroad, and cannot meet the needs of high-orbit high-resolution satellites and new generation strategies. For mission requirements such as weapons, it is necessary to further improve the structural design level of the fiber optic gyroscope, and realize an ultra-high-precision fiber optic gyroscope of 0.0001-0.0003° / h (1σ) in the application environment

Method used

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  • Ultrahigh-precision optical fiber gyroscope structure

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Embodiment 1

[0055] Such as figure 1 Shown is a schematic diagram of the structure of the fiber optic gyroscope of the present invention, including a mounting flange 1, an outer cover 2, a mounting base 3, a mounting cover 4, a fiber ring base 5, a fiber ring coil 6, a fiber ring inner cover 7, and a Y waveguide 8 .

[0056] Such as figure 2 Shown is a schematic diagram of the structure of the mounting flange 1 of the present invention. The mounting flange 1 acts as a load bearing and is an annular cylindrical structure with a bridge lap design in the middle, corresponding to the ring groove of the flange and the linear groove of the flange respectively, with The sufficiently high structural natural frequency reduces the influence of installation errors caused by the deformation of structural parts. The wall thickness of the mounting flange 1 is 1-1.5 mm, which is 1.5 mm in this embodiment. There are 3 mounting lugs 11 with 6 threaded holes in total, which are used to install the cover...

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Abstract

The invention relates to an ultrahigh-precision optical fiber gyroscope structure. A mounting base, a mounting upper cover, a mounting flange and an outer cover form a double-layer magnetic shielding design, so that effective magnetic field shielding is provided for an optical fiber ring coil, and the optical fiber ring is prevented from being interfered by a magnetic field. A multi-layer structure is formed, an optical fiber is subjected to heat insulation design through the multi-layer structure and by utilizing an optical fiber ring base and an optical fiber ring inner cover, the influence of environment temperature change on the optical fiber ring coil is reduced, and the measurement precision and stability of the optical fiber gyroscope are improved. The whole structure is miniaturized, so that the gyroscope has excellent performance and meets the miniaturization requirement at the same time.

Description

technical field [0001] The invention relates to the structural design technology of an optical fiber gyroscope, in particular to an ultra-high-precision optical fiber gyroscope structure, and belongs to the technical field of optical fiber gyroscopes. Background technique [0002] The fiber optic gyroscope is a new type of all-solid-state inertial instrument based on the Sagnac effect. It is used to measure the angular rate of the carrier. It must work well throughout the entire life cycle of the aircraft and is an indispensable component of the flight carrier. At present, the fiber optic gyroscope plays an increasingly important role in the inertial navigation system. The fiber optic gyroscope with a precision of 0.001~0.01° / h (1σ) improves the temperature and anti-vibration performance of the fiber optic ring, and realizes the application in some fields. Domestic high-precision fiber optic gyroscopes already have a relatively high level of accuracy in the laboratory enviro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C19/72
CPCG01C19/726
Inventor 何北樊建琴冯文帅李如意王嘉铭王利超
Owner BEIJING AEROSPACE TIMES OPTICAL ELECTRONICS TECH
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