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High-accuracy disassembling method of laser inertia group inertia body

A disassembly method and high-precision technology, applied in the field of inertial navigation, can solve the problems of unavoidable disassembly of the body and large difference in instrument output, and achieve the effects of shortening the time of high-precision repeated assembly, high reliability, and simple operation

Active Publication Date: 2019-03-01
BEIJING AEROSPACE ERA LASER NAVIGATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the internal components of the inertial group fail due to some reasons, when replacing the internal components, it is inevitable to disassemble the main body, resulting in a large difference between the output of the instrument and the previous value after the main body is reinstalled

Method used

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  • High-accuracy disassembling method of laser inertia group inertia body
  • High-accuracy disassembling method of laser inertia group inertia body
  • High-accuracy disassembling method of laser inertia group inertia body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0055] 1) Body commissioning:

[0056] Before this test, the inertial group first calibrates a set of data D1, and the test is carried out after the inertial group is fully cooled. Then use cotton dipped in alcohol to wipe clean the inertial group installation surface and marble plane, place the inertial group flat on the marble plane, and remove the inertial group cover. Assemble the adjustment tooling to the body, and the three hexagon socket screws for adjustment are in a loose state. After the electronic level is turned on and stabilized, place the electronic level on the upper surface of the tooling, and measure the initial non-levelness A1 (324) in the long axis direction of the body and A2 (156) in the short axis direction.

[0057] Tighten the three screws of the assembly tool just to withstand the box, keep the screws still, loosen the 8 screws of the shock absorber, and use an electronic level to measure the unlevelness A3 (300) in the direction of the long axis of ...

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Abstract

The invention discloses a high-accuracy disassembling method of a laser inertia group inertia body, and belongs to the technical field of inertial navigation. Through a specially designed technical device, the azimuth, the angle of pitch and other information of the body during mounting are detected by an electronic theodolite and an electronic level meter. The body is assembled into an inertia group box body almost the same as the original shape of the body before disassembling, and therefore the purposes that the inertial instrument installation error is maintained unchanged and the inertiagroup output is maintained stable are achieved.

Description

technical field [0001] The invention relates to a high-precision disassembly method for a laser inertial group inertial body, which belongs to the technical field of inertial navigation. Background technique [0002] Laser inertial navigation has been successfully used in launch vehicles, missiles, satellites, aircraft, ships and other civilian fields, providing angular velocity and apparent acceleration information for launch vehicles, missiles, satellites, aircraft, ships, etc., which is the key equipment. The inertial group is composed of important instruments (gyroscope, plus meter), body, box, shock absorber, electronic box, prism, etc. The important instruments of the inertial group (gyro and plus meter) are installed on the body, and the body is installed on the body through the shock absorber. On the box, the prism is generally installed on the box (such as figure 1 shown). [0003] The stability of the inertial group instrument and prism installation error is stri...

Claims

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Application Information

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IPC IPC(8): G01C21/16G01C21/18
CPCG01C21/16G01C21/18
Inventor 李世杰李志华黄世涛
Owner BEIJING AEROSPACE ERA LASER NAVIGATION TECH CO LTD
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