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Method for testing fiber-optic gyroscope resolution ratio

A fiber optic gyroscope and testing method technology, applied in measurement devices, instruments, etc., can solve the problems of low angular rate resolution and resolution, achieve precise resolution, easy implementation, and eliminate the effects of fiber optic gyroscope testing.

Active Publication Date: 2014-03-26
西安光迅传感技术有限公司
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AI Technical Summary

Problems solved by technology

The rate turntable is the main instrument for testing the fiber optic gyroscope. The angular rate resolution of the existing rate turntable is lower than that of the fiber optic gyroscope. Therefore, how to accurately measure the resolution of the fiber optic gyroscope is of great significance to the development and production of the fiber optic gyroscope.

Method used

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  • Method for testing fiber-optic gyroscope resolution ratio
  • Method for testing fiber-optic gyroscope resolution ratio
  • Method for testing fiber-optic gyroscope resolution ratio

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Embodiment Construction

[0021] Attached below Figure 1-3 An embodiment of the present invention is described.

[0022] A method for testing the resolution of a fiber optic gyroscope, comprising the steps of:

[0023] 1. Adjust the rate turntable: tilt the tiltable rate turntable 1 to the south, and the inclination angle formed with the horizon is equal to the geographic latitude angle of the test site. At this time, the axis 4 of the turntable is perpendicular to the polar axis of the earth, eliminating the impact of the horizontal component of the earth's rotation on the optical fiber Impact of the Gyro 5 test;

[0024] 2. Installing the fiber optic gyroscope: fix the fiber optic gyroscope 5 on the rate turntable 1 through the hexahedral fixture 3, and make an angle relationship of 89.5° between the turntable axis 4 of the rate turntable 1 and the input axis of the fiber optic gyroscope 5, and make the earth The polar axis is perpendicular to the plane formed by the turntable axis 4 of the rate t...

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Abstract

The invention provides a method for testing a fiber-optic gyroscope resolution ratio. According to the method, firstly a speed rotary table is adjusted, then a fiber-optic gyroscope is mounted, and finally the fiber-optic gyroscope is tested. On the basis of a conventional speed rotary table, through the improvement of a test method, the influence of an earth rotation horizontal component on test of the fiber-optic gyroscope resolution ratio is effectively eliminated, so that a low-accuracy rotary table can precisely measure the resolution ratio of the high-accuracy fiber-optic gyroscope.

Description

technical field [0001] The invention belongs to the technical field of inertial device testing and angular rate sensor calibration testing, and in particular relates to a testing method for the resolution of an optical fiber gyroscope. Background technique [0002] Fiber optic gyroscope is an angular rate sensor, which is used to measure the angular rate of motion of the carrier in inertial space, and is widely used in various fields such as aviation, aerospace, weapons and so on. With the improvement of fiber optic gyroscope development technology, the accuracy of fiber optic gyroscope is getting higher and higher. The resolution of the fiber optic gyroscope determines the accuracy of application systems such as navigation and north-seeking, and can also reflect the overall noise level of the fiber optic gyroscope. The rate turntable is the main instrument for testing the fiber optic gyroscope. The angular rate resolution of the existing rate turntable is lower than that o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00
CPCG01C25/005
Inventor 陈娇敏毕军利王莉华闫少青郭远
Owner 西安光迅传感技术有限公司
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