CN104034315A - Assembling method of truss structure of ultra-long focal length remote sensing camera - Google Patents
Assembling method of truss structure of ultra-long focal length remote sensing camera Download PDFInfo
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- CN104034315A CN104034315A CN201410310102.3A CN201410310102A CN104034315A CN 104034315 A CN104034315 A CN 104034315A CN 201410310102 A CN201410310102 A CN 201410310102A CN 104034315 A CN104034315 A CN 104034315A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
- G01C11/02—Picture taking arrangements specially adapted for photogrammetry or photographic surveying, e.g. controlling overlapping of pictures
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- Multimedia (AREA)
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- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention relates to the field of aerospace and discloses an assembling method of a truss structure of an ultra-long focal length remote sensing camera. The method comprises the following steps that the optical axis direction of the remote sensing camera is perpendicular to the ground horizontal direction, and a truss structure assembling tool is designed according to the assembling mode; the deformation situation of the remote sensing camera under the action of self-weight loads under the assembling mode determined in the first step is analyzed out, and a theoretical value of the angle and the line quantity changes of the assembling link is calculated out in a finite element calculation mode; the theoretical deformation value obtained in the second step serves as compensation dosage when assembly is carried out in the assembling link for pre-compensation; a truss rod set is assembled according to assembling data obtained after compensation is carried out in the third step and the assembling mode determined in the first step; the truss rod set is put aside for 10-15 days after being assembled to release stress, and the truss structure is detected. According to the assembling method, the occupied space in the gravity direction is reduced, the needed mass of the designed assembling tool is small, the operational space is large, and measurement errors, operation errors and the like do not occur easily.
Description
Technical field
The present invention relates to field of aerospace technology, be specifically related to a kind of assembly method of overlength focal length remote sensing camera truss-frame structure.
Background technology
Framed structure is the skeleton structure of space camera, support and the location of being responsible for optical element and controlling the vitals such as electronic box, so its imaging to space camera has key effect.
When the focal length of remote sensing camera is excessive, will cause its truss-frame structure optical axis direction size too huge (being that primary and secondary mirror interval is excessive), at present, the assembly method of remote sensing camera truss-frame structure, the general assembly direction that adopts is the mode of remote sensing camera optical axis direction (being generally the direction of size quantity maximum) and the earth horizontal direction parallel, the method takes up room excessive at gravity direction, the required design assembly tooling scale of construction is too huge, make can operating space littlely, easily cause the problems such as measuring error, misoperation.
Summary of the invention
In order to solve gravity direction that the assembly method of existing remote sensing camera truss-frame structure the exists problem that excessive, the required assembly tooling scale of construction is too huge, can operating space little, easily cause measuring error and misoperation that takes up room, the invention provides a kind of assembly method of overlength focal length remote sensing camera truss-frame structure.
The present invention is that the technical scheme that adopts of technical solution problem is as follows:
The assembly method of overlength focal length remote sensing camera truss-frame structure, the method is realized by following steps:
Step 1, remote sensing camera optical axis direction is placed with the earth horizontal direction is vertical, according to this assembling mode, designed truss-frame structure assembly tooling;
Step 2, the first assembling link is arranged in support platform, the second assembling link is arranged on and is debug in frock, adopt position measurement apparatus to measure the relative position relation of the first assembling link and the second assembling link, and by adjustment assembly frock until the second assembling link is adjusted to target installation site;
Step 3, analyze the conducted oneself with dignity deformation of load of whole remote sensing camera under the determined assembling mode of step 1, adopt FEM (finite element) calculation mode to calculate the first assembling link and the second assembling angle of link and theoretical value of line quantitative change;
Step 4, the first assembling link that step 3 is calculated and the second assembling angle of link and the theoretical value of line quantitative change are carried out precompensation as the compensation rate of the first assembling link and the second assembling link assembling theoretical value to the target installation site of the first assembling link and the second assembling link;
Step 5, according to fabrication data and the definite assembling mode of step 1 after step 4 compensation, truss rod group is assembled;
Step 6, truss rod assembling are shelved 10～15 days to discharge stress after having joined;
Step 7, by position measurement apparatus to the first assembling link and second assembling link relative position detect.
Described assembly tooling has six-freedom degree adjustment capability, meets six direction and adjusts accuracy requirement.
The invention has the beneficial effects as follows: assembly method of the present invention adopts by remote sensing camera optical axis direction the mode with the vertical placement of the earth horizontal direction, the space that this truss-frame structure takies at gravity direction will significantly reduce, and have the basic assembly difficulty similar to compact camera framed structure; The required design assembly tooling scale of construction is less, can operating space larger, is difficult for causing measuring error, misoperation etc.; The deformation induced by gravity that the mode of employing FEM (finite element) calculation is brought turning carries out precompensation, can be after system have been assembled, actual deformation induced by gravity is offset the pre-compensation value with calculating, thereby realizes near the assembling preferably theoretical value of this overlength focal length remote sensing camera truss-frame structure.
Accompanying drawing explanation
Fig. 1 is that the assembling device of using in the assembly method of overlength focal length remote sensing camera truss-frame structure of the present invention forms structural representation.
Fig. 2 is the assembly method schematic flow sheet of overlength focal length remote sensing camera truss-frame structure of the present invention.
In figure: 1, support platform, the 2, position measurement apparatus, 3, first assembling link, the 4, second assembling link, 5, truss rod group, 6, debug frock.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 2, the assembly method of a kind of overlength focal length remote sensing camera truss-frame structure of the present invention, the method is realized by following steps:
Step 1, remote sensing camera optical axis direction (direction of size quantity maximum) is placed with the earth horizontal direction is vertical, according to this assembling mode, design truss-frame structure assembly tooling 6, assembly tooling 6 should have 6 degree of freedom adjustment capabilities, meet 6 directions and adjust accuracy requirement, its specific constructive form can design as required;
Step 2, as shown in Figure 1, the first assembling link 3 is arranged in support platform 1, the second assembling link 4 is arranged on and is debug in frock 6, adopt position measurement apparatus 2 to measure the relative position relation of the first assembling link 3 and the second assembling link 4, and by adjustment assembly frock 6 until the second assembling link 4 is adjusted to target installation site;
Step 3, analyze the conducted oneself with dignity deformation of load of whole remote sensing camera under the determined assembling mode of step 1, adopt FEM (finite element) calculation mode to calculate the first assembling link 3 and the second assembling angle of link 4 and theoretical value of line quantitative change;
Step 4, the first assembling link 3 that step 3 is calculated and the second assembling angle of link 4 and the theoretical value of line quantitative change are carried out precompensation as the compensation rate of the first assembling link 3 and the second assembling link 4 assembling theoretical values to the target installation site of the first assembling link 3 and the second assembling link 4;
Step 5, according to fabrication data and the definite assembling mode (remote sensing camera optical axis direction is placed with the earth horizontal direction is vertical) of step 1 after step 4 compensation, truss rod group 5 is assembled;
Step 6, truss rod group 5 are shelved 10～15 days to discharge stress after having assembled, relative position by 2 pairs first assembling links 3 of position measurement apparatus and the second assembling link 4 detects, and can obtain a truss-frame structure approaching with theoretical value at whole remote sensing camera under the effect of heavy load.
Assembly method of the present invention has effectively been avoided due to the huge series of problems bringing of the truss-frame structure scale of construction, and required assembly tooling 6 is simple in structure, do not take too much operating space, and procedure easy operating, can obtain theoretical assembly precision preferably.
Claims (2)
1. the assembly method of overlength focal length remote sensing camera truss-frame structure, is characterized in that, the method is realized by following steps:
Step 1, remote sensing camera optical axis direction is placed with the earth horizontal direction is vertical, according to this assembling mode, designed truss-frame structure assembly tooling (6);
Step 2, the first assembling link (3) is arranged in support platform (1), the second assembling link (4) is arranged on and is debug in frock (6), adopt position measurement apparatus (2) to measure the first assembling link (3) and second and assemble the relative position relation of link (4), and by adjustment assembly frock (6) until the second assembling link (4) is adjusted to target installation site;
Step 3, analyze the conducted oneself with dignity deformation of load of whole remote sensing camera under the determined assembling mode of step 1, adopt FEM (finite element) calculation mode to calculate the first assembling link (3) and second and assemble the angle of link (4) and the theoretical value of line quantitative change;
Step 4, the first assembling link (3) that step 3 is calculated and second angle of assembling link (4) and the theoretical value of line quantitative change are carried out precompensation as the compensation rate of the first assembling link (3) and the second assembling link (4) assembling theoretical value to the target installation site of the first assembling link (3) and the second assembling link (4);
Step 5, according to fabrication data and the definite assembling mode of step 1 after step 4 compensation, truss rod group (5) is assembled;
Step 6, truss rod group (5) are shelved 10～15 days to discharge stress after having assembled;
Step 7, by position measurement apparatus (2) to the first assembling link (3) and second assembling link (4) relative position detect.
2. the assembly method of overlength focal length remote sensing camera truss-frame structure according to claim 1, is characterized in that, described assembly tooling (6) has six-freedom degree adjustment capability, meets six direction and adjusts accuracy requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410310102.3A CN104034315B (en) | 2014-06-30 | 2014-06-30 | The assembly method of overlength focal length remote sensing camera truss-frame structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410310102.3A CN104034315B (en) | 2014-06-30 | 2014-06-30 | The assembly method of overlength focal length remote sensing camera truss-frame structure |
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| Publication Number | Publication Date |
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| CN104034315A true CN104034315A (en) | 2014-09-10 |
| CN104034315B CN104034315B (en) | 2016-01-13 |
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| CN201410310102.3A Active CN104034315B (en) | 2014-06-30 | 2014-06-30 | The assembly method of overlength focal length remote sensing camera truss-frame structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111689397A (en) * | 2020-06-29 | 2020-09-22 | 西南科技大学 | Truss hoisting and angle adjusting method |
| CN112965324A (en) * | 2021-03-24 | 2021-06-15 | 中国科学院西安光学精密机械研究所 | Carbon fiber truss body assembling and adjusting device and process based on gluing error compensation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111689397A (en) * | 2020-06-29 | 2020-09-22 | 西南科技大学 | Truss hoisting and angle adjusting method |
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| CN112965324A (en) * | 2021-03-24 | 2021-06-15 | 中国科学院西安光学精密机械研究所 | Carbon fiber truss body assembling and adjusting device and process based on gluing error compensation |
| CN112965324B (en) * | 2021-03-24 | 2022-02-18 | 中国科学院西安光学精密机械研究所 | Carbon fiber truss body assembling and adjusting device and process based on gluing error compensation |
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| CN104034315B (en) | 2016-01-13 |
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