Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Rapid testing method for optical fiber gyroscope scale factor parameter

A fiber optic gyroscope and scaling factor technology, applied in the direction of measuring devices, instruments, etc., can solve the problems of easy wear, short life, long life, generally a few minutes to tens of minutes, etc., to achieve small damage, low requirements, and test time short effect

Inactive Publication Date: 2014-09-10
ZHEJIANG UNIV
View PDF7 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The turntable slip ring is one of the key components of the turntable. It is easy to wear and tear during long-term use and has a short life. It needs frequent maintenance and replacement in continuous testing.
In addition, in the test, it is necessary to rotate for a certain time at each test rate point, resulting in a very long test time for the scale factor, generally several minutes to tens of minutes

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rapid testing method for optical fiber gyroscope scale factor parameter
  • Rapid testing method for optical fiber gyroscope scale factor parameter
  • Rapid testing method for optical fiber gyroscope scale factor parameter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings.

[0038] The present invention adopts following steps:

[0039] 1) if figure 1 As shown, the fiber optic gyroscope 3 is fixedly installed on the turntable 2, and the turntable 2 is controlled to rotate at a sinusoidal angular rate Ω(t)=Ωsin(2πft), and the fiber optic gyroscope 3 follows the turntable 2 to rotate at the same angular rate, where Ω is The magnitude of the sinusoidal angular rate, f is the frequency of the sinusoidal angular rate, and t is the time;

[0040] 2) Collect the output digital quantity of the fiber optic gyroscope 3 and the rotational sine angular rate of the turntable 2, and obtain the output digital quantity F(t) of the fiber optic gyroscope 3 and the rotational sine angular rate Ω(t) of the turntable 2 at different time points t ;

[0041] 3) Perform linear least squares fitting on the output digital quantity F(t) of the fiber optic gyroscope ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a rapid testing method for optical fiber gyroscope scale factor parameters. The testing method comprises the following steps: fixedly mounting an optical fiber gyroscope on a rotating table and rotating along with the rotating table in an identical sine angle velocity, acquiring to obtain output digital amount of the optical fiber gyroscope and the rotation sine angle velocity of the rotating table at different time points, performing linear least square method fitting, calculating to obtain the optical fiber gyroscope scale factor parameters, testing a plurality of sine angle velocity periods, averaging output digital amounts of the optical fiber gyroscope under the identical sine angle velocity in each sine angle velocity period so as to obtain an average output digital amount of the optical fiber gyroscope under the identical sine angle velocity, and further performing linear least square method fitting to calculate the optical fiber gyroscope scale factor parameters. The testing method is short in testing time, the optical fiber gyroscope scale factor parameters can be rapidly evaluated, the testing equipment is lowly required, no special rotating table adaptive interface line is needed, the testing system is simple and reliable and high in security coefficient, and rapid testing on the optical fiber gyroscope scale factor parameters is achieved.

Description

technical field [0001] The invention relates to a method for testing parameters of an optical fiber gyroscope, in particular to a method for quickly testing the parameters of a fiber optic gyroscope scale factor. Background technique [0002] Fiber optic gyroscope is an important angular rate sensor, which has the advantages of no moving parts, high precision, large dynamic range, shock resistance, etc. It is widely used in the fields of carrier control and inertial navigation. A fiber optic gyroscope is essentially an optical Segneck interferometer, and its working principle is based on the Segneck effect. When the fiber optic gyroscope rotates, a phase difference proportional to the rotation angular rate will be generated inside the interferometer. By detecting this phase difference, the current rotation angular rate of the fiber optic gyroscope can be obtained. [0003] Fiber optic gyroscope is a complex optomechanical system, and the performance of different fiber optic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01C25/00
CPCG01C25/00
Inventor 李阳陈杏藩舒晓武刘承
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com