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Method for calibrating and compensating installation errors of single-axis gyroscope

A technology of installation error and gyroscope, which is applied in the field of installation error of fiber optic gyroscope and its inertial measurement device, can solve problems such as calibration and compensation, failure to establish installation error equation, and inability to improve compensation accuracy, improve test efficiency, and reduce processing difficulty Effect

Inactive Publication Date: 2020-09-15
BEIJING AEROSPACE TIMES OPTICAL ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the gyroscope in the inertial measurement device is single-axis, the installation error equation cannot be established, let alone calibrated and compensated by mathematical methods. Therefore, a new installation error calibration method and compensation method are proposed for the single-axis gyro component.

Method used

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  • Method for calibrating and compensating installation errors of single-axis gyroscope
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  • Method for calibrating and compensating installation errors of single-axis gyroscope

Examples

Experimental program
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Effect test

Embodiment 1

[0064] A method for calibrating and compensating an installation error of a single-axis gyroscope, comprising the following steps:

[0065] (1) Place the X-axis of the gyro-inertial measurement device facing the sky and the sensitive axis (Z-axis) of the gyroscope facing south, and place it on the rate turntable;

[0066] (2) Rotate the turntable in positive and negative directions respectively, and the input angular rate of the turntable is ω x and -ω x , the running time is t;

[0067] (3) Obtain the installation error of the gyro sensitive axis relative to the X axis through calculation;

[0068] (4) Place the Y-axis of the gyro inertial measurement device facing the sky and the sensitive axis of the gyro facing south, and place it on the rate turntable;

[0069] (5) Repeat step (2);

[0070] (6) Obtain the installation error of the gyro sensitive axis relative to the Y axis through calculation;

[0071] (7) Through calculation, the thickness of the gasket that needs t...

Embodiment 2

[0084] The installation error is an important factor affecting the measurement accuracy of the fiber optic gyroscope inertial measurement device. Therefore, in order to improve the measurement accuracy of the inertial measurement device, it is necessary to compensate the installation error. The present invention proposes an installation error calibration and compensation method for the single-axis gyro assembly. The method relies on the projection of the angular velocity caused by the installation error on the sensitive axis to measure the installation error angle relative to each axial direction, and then calculates the For the height that needs to be compensated, the feeler gauge is used to process the gasket that meets the compensation requirements, so as to reduce the installation error and improve the measurement accuracy of the gyro.

[0085] The installation error calibration and compensation method of the present invention comprises the following steps:

[0086] (1) Us...

Embodiment 3

[0097] Applying the method of embodiment 1 or 2, a method for calibration and compensation of single-axis gyroscope installation errors, the steps of the method include:

[0098] (1) Using tooling, place the X-axis of the gyro inertial measurement device facing the sky and the sensitive axis of the gyro facing south, and place it on the rate turntable;

[0099] (2) Rotate the turntable in positive and negative directions respectively, the input angular rate of the turntable is 30° / s and -30° / s, and the running time is 48s;

[0100] (3) Through calculation, the installation error of the gyro sensitive axis relative to the X axis is -2.4000′;

[0101] (4) Place the Y-axis of the gyro inertial measurement device facing the sky and the sensitive axis of the gyro facing south, and place it on the rate turntable;

[0102] (5) Repeat step (2);

[0103] (6) Through calculation, the installation error of the gyro sensitive axis relative to the Y axis is -3.0014';

[0104] (7) Throug...

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Abstract

The invention discloses a method for calibrating and compensating installation errors of a single-axis gyroscope, belongs to the technical field of installation errors of fiber-optic gyroscopes and inertial measurement devices of the fiber-optic gyroscopes, particularly relates to a method for calibrating and compensating the installation errors of a fiber-optic gyroscope in an inertial measurement device of the single-axis gyroscope, and can be applied to the technical field of assembly of the inertial measurement devices. According to the method, the installation error angles relative to allthe axial directions are measured through projection of the angular velocity caused by installation errors on a sensitive shaft, then, the height needing to be compensated is calculated according tothe size of the gyroscope, the gasket meeting the compensation requirements is machined through a feeler gauge, and the effects of reducing the installation errors and improving the measurement precision of the gyroscope are achieved.

Description

technical field [0001] The invention relates to a single-axis gyroscope installation error calibration and compensation method, in particular to a fiber optic gyroscope installation error calibration and compensation method in a single-axis optical fiber gyroscope inertial measurement device, which belongs to the optical fiber gyroscope and its inertial measurement device installation error technology field. Background technique [0002] With the continuous development of satellite control technology, the requirements for satellite attitude control are also increasing. The fiber optic gyro inertial measurement device is an important measurement component of the satellite attitude control system, and its measurement accuracy directly affects the attitude control level of the satellite. [0003] The installation error is an important factor affecting the measurement accuracy of the fiber optic gyroscope inertial measurement device. Therefore, in order to improve the measureme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00
CPCG01C25/005
Inventor 汤梦希魏垚向政冯文龙左明璐
Owner BEIJING AEROSPACE TIMES OPTICAL ELECTRONICS TECH
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