CN104034315B - The assembly method of overlength focal length remote sensing camera truss-frame structure - Google Patents
The assembly method of overlength focal length remote sensing camera truss-frame structure Download PDFInfo
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- CN104034315B CN104034315B CN201410310102.3A CN201410310102A CN104034315B CN 104034315 B CN104034315 B CN 104034315B CN 201410310102 A CN201410310102 A CN 201410310102A CN 104034315 B CN104034315 B CN 104034315B
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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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- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The assembly method of overlength focal length remote sensing camera truss-frame structure, relate to aerospace field, the method is realized by following steps: placed, according to this assembling patten's design truss-frame structure assembly tooling with greatly horizontal direction is vertical by remote sensing camera optical axis direction; To analyze under the assembling mode that remote sensing camera determines in step one by the deformation from heavy load effect, the theoretical value adopting FEM (finite element) calculation mode to calculate the angle of assembling link and line amount to change; Theory deformation value step 2 obtained carries out precompensation as the compensation rate during assembling of assembling link; The assembling mode that fabrication data after compensating according to step 3 and step one are determined is assembled truss rod group; Shelve 10 ~ 15 days after having assembled to discharge stress, truss-frame structure is detected.Assembly method of the present invention to take up room reduction at gravity direction, and the required design assembly tooling scale of construction is less, can operating space comparatively large, not easily cause measuring error, misoperation etc.
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, and be responsible for optical element and control support and the location of the vitals such as electronic box, therefore it has key effect to the imaging of space camera.
When the focal length of remote sensing camera is excessive, its truss-frame structure will be caused optical axis direction size too huge (namely primary and secondary mirror interval is excessive), at present, the assembly method of remote sensing camera truss-frame structure, general employing assembly direction is the mode of remote sensing camera optical axis direction (being generally the direction that size quantity is 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 less, easily cause the problem such as measuring error, misoperation.
Summary of the invention
The gravity direction existed in order to the assembly method solving existing remote sensing camera truss-frame structure take up room excessive, the required assembly tooling scale of construction too huge, can little, the problem that easily causes measuring error and misoperation in operating space, the invention provides a kind of assembly method of overlength focal length remote sensing camera truss-frame structure.
The technical scheme that the present invention adopts for 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 one, by remote sensing camera optical axis direction, horizontal direction is vertical places, according to this assembling patten's design truss-frame structure assembly tooling with the earth;
Step 2, by first assembling link be arranged in support platform, second assembling link being arranged on debugs in frock, position measurement apparatus is adopted 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 object mounting position;
Step 3, analyze whole remote sensing camera under the determined assembling mode of step one by from the deformation of heavy load effect, the theoretical value adopting FEM (finite element) calculation mode to calculate the angle of the first assembling link and the second assembling link and line amount to change;
The theoretical value that step 4, the first assembling link step 3 calculated and the second assembling angle of link and line amount change is assembled link and second as first and is assembled compensation rate that link assembles theoretical value and assemble to first the object mounting position that link and second assembles link and carry out precompensation;
Step 5, compensate according to step 4 after fabrication data and the assembling mode determined of step one truss rod group is assembled;
The assembling of step 6, truss rod shelves 10 ~ 15 days to discharge stress after having joined;
Step 7, by position measurement apparatus to first assembling link and second assembling link relative position detect.
Described assembly tooling has six-freedom degree adjustment capability, meets six direction Adjustment precision demand.
The invention has the beneficial effects as follows: assembly method of the present invention adopts remote sensing camera optical axis direction and the vertical mode of placing of the earth horizontal direction, this truss-frame structure will significantly reduce in the space that gravity direction takies, and have basic similar to compact camera framed structure assembly difficulty; The required design assembly tooling scale of construction is less, can operating space comparatively large, not easily cause measuring error, misoperation etc.; The deformation induced by gravity adopting the mode of FEM (finite element) calculation to bring turning carries out precompensation, can after system have been assembled, actual deformation induced by gravity is offset with the pre-compensation value calculated, thus realizes this overlength focal length remote sensing camera truss-frame structure and assemble preferably near theoretical value.
Accompanying drawing explanation
Fig. 1 is the assembling device composition structural representation used in the assembly method of overlength focal length remote sensing camera truss-frame structure of the present invention.
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 one, by remote sensing camera optical axis direction (direction that size quantity is maximum), horizontal direction is vertical places with the earth, according to this assembling patten's design truss-frame structure assembly tooling 6, assembly tooling 6 should have 6 degree of freedom adjustment capabilities, meet 6 direction Adjustment precision demands, its specific constructive form can design as required;
Step 2, as shown in Figure 1, first assembling link 3 is arranged in support platform 1, second assembling link 4 being arranged on debugs in frock 6, position measurement apparatus 2 is adopted 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 object mounting position;
Step 3, analyze whole remote sensing camera under the determined assembling mode of step one by from the deformation of heavy load effect, the theoretical value adopting FEM (finite element) calculation mode to calculate the angle of the first assembling link 3 and the second assembling link 4 and line amount to change;
The theoretical value that the angle of step 4, the first assembling link 3 step 3 calculated and the second assembling link 4 and line amount change is assembled link 3 and second as first and is assembled compensation rate that link 4 assembles theoretical value and assemble link 3 to first and the second object mounting position assembling link 4 carries out precompensation;
Step 5, compensate according to step 4 after fabrication data and the assembling mode (remote sensing camera optical axis direction with greatly horizontal direction is vertical place) determined of step one truss rod group 5 is assembled;
Step 6, truss rod group 5 shelve 10 ~ 15 days to discharge stress after having assembled, detected by the relative position of position measurement apparatus 2 to the first assembling link 3 and the second assembling link 4, a truss-frame structure close with theoretical value can be obtained at whole remote sensing camera under the effect of heavy load.
Assembly method of the present invention effectively avoids the series of problems brought because the truss-frame structure scale of construction is huge, and required assembly tooling 6 structure simply, does not take too much operating space, and procedure is easy to operation, can obtain theoretical assembly precision preferably.
Claims (2)
1. the assembly method of overlength focal length remote sensing camera truss-frame structure, it is characterized in that, the method is realized by following steps:
Step one, by remote sensing camera optical axis direction, horizontal direction is vertical places, according to this assembling patten's design truss-frame structure assembly tooling (6) with the earth;
Step 2, by first assembling link (3) be arranged in support platform (1), second assembling link (4) is arranged in assembly tooling (6), position measurement apparatus (2) is adopted 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 object mounting position is adjusted in the second assembling link (4);
Step 3, analyze whole remote sensing camera under the determined assembling mode of step one by from the deformation of heavy load effect, adopt FEM (finite element) calculation mode to calculate the first assembling link (3) and second and assemble the theoretical value that the angle of link (4) and line amount change;
Step 4, the first assembling link (3) and second step 3 calculated are assembled the angle of link (4) and the theoretical value that changes of line amount and are assembled link (3) and second as first and assemble compensation rate that link (4) assembles theoretical value and assemble to first the object mounting position that link (3) and second assembles link (4) and carry out precompensation;
Step 5, compensate according to step 4 after fabrication data and the assembling mode determined of step one truss rod group (5) is assembled;
Step 6, truss rod group (5) shelve 10 ~ 15 days to discharge stress after having assembled;
Step 7, by position measurement apparatus (2) to first assembling link (3) and second assemble link (4) relative position detect.
2. the assembly method of overlength focal length remote sensing camera truss-frame structure according to claim 1, it is characterized in that, described assembly tooling (6) has six-freedom degree adjustment capability, meets six direction Adjustment precision demand.
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| 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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| CN104034315A CN104034315A (en) | 2014-09-10 |
| CN104034315B true CN104034315B (en) | 2016-01-13 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111689397B (en) * | 2020-06-29 | 2022-05-24 | 西南科技大学 | Truss hoisting and angle adjusting method |
| 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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