North seeker calibrating method

A calibration method and technology of north finder, applied in the field of north finder calibration, can solve the problems of long calibration period, cumbersome calibration method, inability to achieve on-site calibration of north finder, etc., to eliminate absolute error and relative error, and solve simple calibration , to ensure the effect of combat effectiveness

Active Publication Date: 2013-04-24
BEIJING MECHANICAL EQUIP INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for calibrating a north-seeking instrument, which solves the problem that the on-site calibration of the north-seeking instrument cannot be realized, the calibration period is long, the calibration method is cumbersome, and the north-seeking instrument cannot be tested when the calibration period is not reached. Beiyi's gyro drift error problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The specific steps of a north finder calibration method are:

[0028] The first step is to build the calibration system

[0029] The calibration system of the north finder includes: azimuth reference table, manual turntable of lathe, and parameter test fitting machine.

[0030] The function of the azimuth reference station is to provide a heading reference, and the reference heading angle is required to be 0 degrees. The azimuth reference platform is placed in a fixed position to keep the heading angle stable. The machining requirements for the bottom surface of the azimuth reference table are flatness between 0.01mm and 0.02mm, and surface roughness between 0.8μm and 2μm. The reference surface is required to have a flatness between 0.01mm and 0.02mm, a verticality between 0.01mm and 0.02mm and a surface roughness between 0.8μm and 2μm.

[0031] The heading angle resolution requirement of the manual turntable of a lathe is between 0.01 degree and 0.015 degree. The manual tur...

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PUM

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Abstract

The invention discloses a north seeker calibrating method, which adopts a calibrating system consisting of an azimuth reference table, a manual lathe rotating table and a parameter testing and fitting machine. Error compensation is carried out after the azimuth reference table and the parameter testing and fitting machine are used for measuring absolute errors of a course angle of a north seeker,and compensation is carried out after relative errors of the course angle of the north seeker are measured via the manual lathe rotating table and the parameter testing and fitting machine. The northseeker calibrating method effectively resolves the problem that the north seeker cannot realize field calibration, is longer in calibration period, and is calibrated troublesomely.

Description

Technical field [0001] The invention relates to a calibration method, in particular to a north finder calibration method. Background technique [0002] At present, the calibration method of north finder at home and abroad is mainly to return to the factory for calibration. That is, when it is found that the test repeatability of the north finder has changed or the calibration cycle of the north finder is reached, the north finder is removed from its mounting platform carrier, transported back to the laboratory, and installed on the high-precision turntable to calibrate its installation error And zero error. In this way, the on-site calibration of the north finder cannot be realized, the calibration cycle is long, and the calibration method is cumbersome. Moreover, the gyroscope drift error of the north finder cannot be tested when the north finder has not reached the calibration period. Seriously affected the combat effectiveness of the weapon system. Summary of the invention...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C17/38
Inventor 葛晓飞许诺郑丽莹张坤李佳辉王涛
Owner BEIJING MECHANICAL EQUIP INST
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