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Precision reference transfer method

A transfer method and reference technology, applied in measuring devices, instruments, optical devices, etc., can solve problems such as large measurement errors

Inactive Publication Date: 2018-08-21
BEIJING SPACE TECH RES & TEST CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a precision reference transfer method to solve the problem of large measurement errors between the internal and external references of the spacecraft cabin

Method used

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Experimental program
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Embodiment approach

[0032] like figure 1 As shown, according to an embodiment of the present invention, a precision reference transfer method of the present invention includes:

[0033] S1. According to the design scheme of the spacecraft cabin, obtain the transmission path connecting the inside and outside of the spacecraft cabin;

[0034] S2. Design a reference transfer structure for transferring the first-precision reference according to the first-precision reference and the transmission path in the spacecraft cabin;

[0035] S3. Based on the transmission path, build a precision measurement optical path on the first precision reference, the reference transfer structure and the spacecraft cabin.

[0036] According to one embodiment of the present invention, in step S1, the design scheme of the spacecraft cabin includes design drawings and three-dimensional models of the spacecraft cabin. In this embodiment, see figure 2 As shown, through the design drawing and the three-dimensional model, t...

Embodiment 1

[0040] Embodiment 1: Directly transfer the first precision reference in the folded state.

[0041] like Figure 4 As shown, in the elevated state, install the cube mirror on the first precision datum, the datum transfer structure 4 and the spacecraft cabin respectively. The installed cubic mirror constitutes a transmission optical path connecting the interior and exterior of the spacecraft cabin, and the light emitted by the measuring device can precisely measure the first-precision benchmark through the transmission optical path, thereby realizing the transfer of the first-precision benchmark. In this embodiment, the transmission path is constructed by using the antenna installation opening 3a in the I quadrant and / or the portholes 3b in the II and IV quadrants. In this embodiment, the reference transfer structure 4 is installed on the outsole 2 by connecting the base 42 with the first precision reference. Install the first cubic mirror A at the position of the first precisio...

Embodiment 2

[0042] Example 2: Measurement of the reference error of the outsole structure in the state of pulling up and closing the return cabin

[0043] like Image 6 As shown in , in the elevated state, the installation cube mirror is installed on the reference transfer structure and the spacecraft cabin respectively. The installed cubic mirror constitutes a transmission optical path connecting the interior and exterior of the spacecraft cabin, and the light emitted by the measuring device can precisely measure the first-precision benchmark through the transmission optical path, thereby realizing the transfer of the first-precision benchmark. In this embodiment, the transmission path is constructed by using the antenna installation opening 3a in the I quadrant and / or the portholes 3b in the II and IV quadrants. In this embodiment, the reference transfer structure 4 is installed on the outsole 2 by connecting the base 42 with the first precision reference. A cube mirror is respectivel...

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Abstract

The invention relates to a precision reference transfer method. The method includes the following steps that: S1, a transmission path connecting the inside and outside of an spacecraft cabin is obtained according to the design scheme of the spacecraft cabin; S2, a reference transfer structure for transferring a first precision reference is designed according to the first precision reference in thespacecraft cabin and the transmission path; and S3, an accurate measurement optical path is built on the first precision reference, the reference transfer structure, and the spacecraft cabin on the basis of the transmission path. With the method of the invention adopted, the first precision reference can be directly transferred to a position where the accurate measurement optical path of cubic mirrors of a side wall can arrive; the first precision reference and a structure reference outside the cabin can be directly made to perform relative relationship accurate measurement under a state thatthe side wall and large bottom of the spacecraft cabin are closed, and therefore, the accuracy of accurate measurement results can be ensured, and error accumulation in an indirect measurement mode can be avoided.

Description

technical field [0001] The invention relates to a precision reference transfer method, in particular to a precision reference transfer method for a spacecraft cabin. Background technique [0002] During the final assembly process of manned spacecraft, there are generally index requirements for the assembly accuracy of the main structure of the spacecraft, the installation accuracy of the control system and propulsion system equipment, and the installation accuracy of some other equipment. Accuracy measurement or adjustment is required, collectively referred to as precision. Measurement. [0003] At present, the precise measurement of manned spacecraft assembly mainly adopts the method of non-contact large dimension measurement system (LDMS). This precise measurement method is to install a calibrated benchmark cube mirror on the device under test. The mutually perpendicular surfaces of the cube mirror represent the installation angle of the device, and the center point of th...

Claims

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Application Information

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IPC IPC(8): G01B11/00
CPCG01B11/00
Inventor 苏南杨宏侯向阳沈锋钢韩彬田政金玮玮
Owner BEIJING SPACE TECH RES & TEST CENT
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