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A Modeling Method for Suppressing the Hysteresis Effect of Fiber Optic Gyroscope Scale Factor Model

A fiber optic gyroscope and scaling factor technology, applied in the field of fiber optic gyroscope, can solve the problems of fiber optic gyroscope scale hysteresis effect and limited compensation accuracy, and achieve the effect of improving environmental adaptability and suppressing model hysteresis

Active Publication Date: 2020-09-01
TIANJIN NAVIGATION INSTR RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The traditional fiber optic gyroscope scale factor temperature model has hysteresis effect, resulting in limited compensation accuracy

Method used

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  • A Modeling Method for Suppressing the Hysteresis Effect of Fiber Optic Gyroscope Scale Factor Model
  • A Modeling Method for Suppressing the Hysteresis Effect of Fiber Optic Gyroscope Scale Factor Model
  • A Modeling Method for Suppressing the Hysteresis Effect of Fiber Optic Gyroscope Scale Factor Model

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Embodiment Construction

[0023] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0024] The purpose of the present invention is to provide a modeling method for suppressing the hysteresis effect of the optical fiber gyroscope scale factor model, to establish the optical fiber gyroscope scale factor temperature model, and to design two temperature environment tests. Practice has proved that the modeling method of the present invention can improve the stability and environmental adaptability of the fiber optic gyroscope scale factor in practical applications.

[0025] A modeling method for suppressing the hysteresis effect of the fiber optic gyroscope scale factor model, comprising the following steps:

[0026] Step 1. Place the fiber optic gyro light source in the incubator separately, and collect the average wavelength and light source temperature of the fiber optic gyro light source synchronously in real time. Through the mode...

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Abstract

The invention relates to a modeling method for suppressing a hysteresis effect of a fiber-optic gyroscope scale factor model. The method is technically characterized by comprising the following steps of 1, building a relational model of the average wavelength and the temperature of a light source through a test of the model of the average wavelength and the temperature of the light source, and obtaining a normalization coefficient of an influence of the temperature of the light source on a fiber-optic gyroscope scale factor; 2, by a scale factor modeling method based on continuous rotation of a single-axis rate rotary table, performing a fiber-optic gyroscope scale factor modeling test; building a relational model of the fiber-optic gyroscope scale factor and the temperature of a coil; and 3, correcting the relational model of the fiber-optic gyroscope scale factor and the temperature of the coil. According to the method, the effect of suppressing the hysteresis effect of the model can be achieved, so that the modeling and compensation precision of the fiber-optic gyroscope scale factor are improved.

Description

technical field [0001] The invention belongs to the technical field of fiber optic gyro, in particular to a modeling method for suppressing the hysteresis effect of the fiber optic gyroscope scale factor model. Background technique [0002] Fiber optic gyroscope is a new type of all-solid-state angular rate sensor, which has the advantages of low cost, long life, large dynamic range and high reliability, and has been widely used in military and civilian fields. When the temperature of the working environment of the fiber optic gyroscope changes, the scale factor will change greatly, which seriously affects the engineering application of the fiber optic gyroscope. The reason is that the geometric size of the fiber optic ring and the average wavelength of the light source change with the temperature, which leads to the change of the scale factor of the fiber optic gyroscope. [0003] It is difficult and costly to eliminate the change of the fiber optic gyroscope scale factor ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G01C25/00G06F111/10
CPCG01C25/005G06F30/20G06F2111/10
Inventor 杨志怀马林宋丽薇张晓雅赵晶睛
Owner TIANJIN NAVIGATION INSTR RES INST
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