CN106404346A - Apparatus for testing influence of large-aperture camera gravity deformation on image quality - Google Patents
Apparatus for testing influence of large-aperture camera gravity deformation on image quality Download PDFInfo
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- CN106404346A CN106404346A CN201510463084.7A CN201510463084A CN106404346A CN 106404346 A CN106404346 A CN 106404346A CN 201510463084 A CN201510463084 A CN 201510463084A CN 106404346 A CN106404346 A CN 106404346A
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Abstract
The invention belongs to the technical field of large-aperture camera performance testing and more particularly relates to an apparatus for testing the influence of large-aperture camera gravity deformation on image quality. The apparatus comprises a worktable, a yaw mechanism, a pitching mechanism, a lifting mechanism, a translating mechanism and a rolling mechanism, with a total of five degrees of freedom movement, and is capable of achieving two-dimensional translation and pitching, yaw adjustment and rolling rotation. The camera is mounted on the worktable as a load. The center of the optical axis of the camera and the center of the roll axis are adjusted to be in a concentric state by the pitching mechanism, the lifting mechanism and the translating mechanism. Then, the mechanisms are locked and the rolling mechanism is run to carry out a camera gravity influence test. The apparatus can meet the requirement of gravity influence test of large-aperture camera, and has characteristics of high degree of automation and good stability.
Description
Technical field
The invention belongs to heavy caliber camera properties technical field of measurement and test is and in particular to a kind of heavy caliber camera weight
Force deformation affects test equipment to as matter.
Background technology
Heavy caliber camera working environment is the gravity-free space of Earth's orbit, because camera is in ground experiment room ring
The stress of border and in-orbit weightlessness is completely different, and Gravity changer necessarily causes malformation, and
Trend for this deformation of the bigger camera of overall dimensions and quality is more obvious.Domestic heavy caliber phase at present
The weight of machine is up to 2t, and overall dimensions reach, the small deformation of structure causes
Optical element Deformation of surface figure will lead to the great variety of camera system image quality it is therefore necessary to measure gravity
Deformation is to as the impact of matter.
General weightlessness test is to realize in flight test vehicle cabin, and flight test vehicle is anxious in meters altitude
Speed decline, when decline acceleration be equal to acceleration of gravity when, in cabin just can Simulated Weightlessness, but should
Test method high cost, test period be short, experimental enviroment unstable it is impossible to meet the survey of heavy caliber camera
Examination is it is therefore desirable to solve this problem in ground experiment room.
Due to in-orbit weightlessness cannot be simulated on the ground completely, according to advanced R＆D experience in the industry, can
To be verified using indexable measurement method, its practice is so that camera is rotated along its optical axis by indexing apparatus, often
Secondary turn 90 °, if each image quality is all fine, the in-orbit imaging of camera can also keep good.
Based on above-mentioned measurement scheme, heavy caliber camera gravity deformation needs to meet on as matter impact test equipment
Following technical requirements：After heavy caliber camera is lifted in test equipment by relevant device, need to ensure phase
Machine optical axis and the upset diameter parallel of test equipment, but the quality due to camera and enormous size, artificial nothing
Method adjusts, and needs this test equipment to have electronic adjustment capability；After camera turns to specified location, need
Long period is stable, and general stabilization time >=12h, therefore test equipment motion need reliable locking
And tremor can not be had to affect.
Content of the invention
The technical problem to be solved in the invention is：A kind of heavy caliber camera gravity deformation is proposed to as matter shadow
Ring test equipment, the equal lockable in each degree of freedom optional position in stroke, there is higher automatization's journey
Spend high and preferable stability.
Technical scheme is as described below：
A kind of heavy caliber camera gravity deformation on as matter affect test equipment, including workbench, Yawing mechanism,
Luffing mechanism, elevating mechanism, translation mechanism, rotation mechanism for wind, rolling framework, rolling ring, roller and pedestal：
Definition Y direction is vertical direction, and Z-direction is and the earth horizontal direction that X, Y, Z axis meets the right side
Handss screw rule；Camera is installed on the table, and workbench is arranged on Yawing mechanism, Yawing mechanism band
Station of starting building and camera do low-angle yawing rotation around Y-axis；Yawing mechanism is arranged on luffing mechanism, bows
Facing upward mechanism drives Yawing mechanism, workbench and camera to do low-angle elevating movement around X-axis；Luffing mechanism is pacified
It is contained on elevating mechanism, elevating mechanism drives luffing mechanism, Yawing mechanism, workbench and camera along Y-axis
Direction moves up and down；Elevating mechanism is arranged on translation mechanism, and translation mechanism drives elevating mechanism, bows
Face upward mechanism, Yawing mechanism, workbench and camera and do translational motion along X-direction；Translation mechanism is arranged on
On rolling framework；Rolling ring is arranged on rolling framework, and rotation mechanism for wind and roller are arranged on pedestal, rolling
Mechanism drives rolling framework, rolling ring, translation mechanism, elevating mechanism, luffing mechanism, Yawing mechanism, work
Station and camera do rolling movement about the z axis, and roller is relative under the drive of rotation mechanism for wind with rolling ring to be rolled,
Play the effect of Auxiliary support；Pedestal is placed on big ground, is connected with the earth；By above-mentioned yawing rotation,
Elevating movement, elevating movement and translational motion, by the light axial adjustment of camera to, Ran Houyou parallel with Z axis
Flip-flop movement carries out the test job of camera to after specified location.
Preferably：Described rotation mechanism for wind adopts large-scale turntable bearing to become mechanical shafting with rolling ring group：
Drive end adopts the large-scale turntable bearing of external tooth type, positioned at the rear of camera lens；Rolling ring is located in front of camera.
Preferably：Described rolling ring is located in front of camera, and internal diameter is more than, outside roller
Circle is tangent, realizes -90 °～+180 ° of angle range motion.
Beneficial effects of the present invention are：
A kind of heavy caliber camera gravity deformation of the present invention affects test equipment to as matter, has four-dimensional adjustment
Platform and rotation mechanism for wind, the equal lockable in each degree of freedom optional position in stroke, heavy caliber phase can be met
The gravity impact testing requirement of machine, has the features such as high degree of automation, good stability, can reach as follows
Technical specification：
Brief description
Fig. 1 is that a kind of heavy caliber camera gravity deformation of the present invention is illustrated on as matter impact test equipment principle
Figure.
In figure, 1- camera, 2- workbench, 3- Yawing mechanism, 4- luffing mechanism, 5- elevating mechanism, 6- puts down
Telephone-moving structure, 7- rolling framework, 8- rolls ring, 9- roller, 10- rotation mechanism for wind, 11- pedestal.
Specific embodiment
With reference to the accompanying drawings and examples a kind of heavy caliber camera gravity deformation of the present invention is affected on as matter
Test equipment is described in detail.
A kind of heavy caliber camera gravity deformation of the present invention on as matter affect test equipment, including workbench 2,
Yawing mechanism 3, luffing mechanism 4, elevating mechanism 5, translation mechanism 6 and rotation mechanism for wind 10, have five
Degree of freedom moves, and is capable of two-dimensional translation and pitching, yaw steering and roll rotational.As load
Camera 1 is arranged on workbench 2, by luffing mechanism 10, elevating mechanism 5 and translation mechanism 6 by phase
The optical axis center of machine 1 and wobble shaft center adjust to concentric, and then each mechanism is locked, rolling of reruning
Rotation mechanism 10 carries out the impact test of camera gravity.
Specifically, defining Y direction is vertical direction, and Z-direction is and the earth horizontal direction, X,
Y, Z axis meet right-hand screw rule；Camera 1 is arranged on workbench 2, and workbench 2 is arranged on driftage
In mechanism 3, Yawing mechanism 3 drives workbench 2 and camera 1 to do low-angle yawing rotation around Y-axis；Partially
Plane structure 3 is arranged on luffing mechanism 4, and luffing mechanism 4 drives Yawing mechanism 3, workbench 2 and phase
Machine 1 does low-angle elevating movement around X-axis；Luffing mechanism 4 is arranged on elevating mechanism 5, elevating mechanism
Luffing mechanism 4, Yawing mechanism 3, workbench 2 and camera 1 is driven to move up and down along Y direction；
Elevating mechanism 5 is arranged on translation mechanism 6, translation mechanism 6 drive elevating mechanism 5, luffing mechanism 4,
Yawing mechanism 3, workbench 2 and camera 1 do translational motion along X-direction；Translation mechanism 6 is arranged on
On rolling framework 7；Rolling ring 8 is arranged on rolling framework 7, and rotation mechanism for wind 10 and roller 9 are arranged on base
Seat 11 on, rotation mechanism for wind 10 drive rolling framework 7, rolling ring 8, translation mechanism 6, elevating mechanism 5,
Luffing mechanism 4, Yawing mechanism 3, workbench 2 and camera 1 do rolling movement, roller 9 and rolling about the z axis
Ring 8 rolls under the drive of rotation mechanism for wind 10 relatively, plays the effect of Auxiliary support；Pedestal 11 is placed
In big ground, it is connected with the earth；By above-mentioned yawing rotation, elevating movement, elevating movement peace movement
Dynamic, by the light axial adjustment of camera 1 to parallel with Z axis, then carried out by after flip-flop movement to specified location
The test job of camera 1.
In the present embodiment, unobstructed in front of camera lens in front of camera for ensureing, camera clear aperture need to reachMore than, heretofore described rotation mechanism for wind 10 is formed using large-scale turntable bearing and rolling ring 8
Mechanical shafting, drive end adopts the large-scale turntable bearing of external tooth type, positioned at the rear of camera lens, rolls ring 8
In front of camera 1, internal diameter is more than, cylindrical tangent with 3 auxiliary wheels 9, -90 ° of realization～
+ 180 ° of angle range motion, the features such as having compact conformation, install simple, easy to maintenance.
Claims (3)
1. a kind of heavy caliber camera gravity deformation affects test equipment to as matter, includes workbench (2), inclined
Plane structure (3), luffing mechanism (4), elevating mechanism (5), translation mechanism (6), rotation mechanism for wind (10),
Rolling framework (7), rolling ring (8), roller (9) and pedestal (11) it is characterised in that：Define Y-axis
Direction is vertical direction, and Z-direction is and the earth horizontal direction that it is fixed that X, Y, Z axis meets right-handed helix
Then；Camera (1) is arranged on workbench (2), and workbench (2) is arranged on Yawing mechanism (3),
Yawing mechanism (3) drives workbench (2) and camera (1) to do low-angle yawing rotation around Y-axis；Partially
Plane structure (3) is arranged on luffing mechanism (4), and luffing mechanism (4) drives Yawing mechanism (3), work
Station (2) and camera (1) do low-angle elevating movement around X-axis；Luffing mechanism (4) is arranged on liter
On descending mechanism (5), elevating mechanism drives luffing mechanism (4), Yawing mechanism (3), workbench (2)
Move up and down along Y direction with camera (1)；Elevating mechanism (5) is arranged on translation mechanism (6)
On, translation mechanism (6) drives elevating mechanism (5), luffing mechanism (4), Yawing mechanism (3), work
Platform (2) and camera (1) do translational motion along X-direction；Translation mechanism (6) is arranged on rolling frame
On frame (7)；Rolling ring (8) is arranged on rolling framework (7), rotation mechanism for wind (10) and roller (9)
It is arranged on pedestal (11), rotation mechanism for wind (10) drives rolling framework (7), rolling ring (8), translation
Mechanism (6), elevating mechanism (5), luffing mechanism (4), Yawing mechanism (3), workbench (2) and phase
Machine (1) does rolling movement, the drive in rotation mechanism for wind (10) of roller (9) and rolling ring (8) about the z axis
Lower rolling relatively, plays the effect of Auxiliary support；Pedestal (11) is placed on big ground, is connected with the earth；
By above-mentioned yawing rotation, elevating movement, elevating movement and translational motion, the optical axis of camera (1) is adjusted
Whole extremely parallel with Z axis, then by the test job carrying out camera (1) after flip-flop movement to specified location.
2. heavy caliber camera gravity deformation according to claim 1 affects test equipment to as matter, its
It is characterised by：Described rotation mechanism for wind (10) adopts large-scale turntable bearing and the mechanical shafting of rolling ring (8) composition：
Drive end adopts the large-scale turntable bearing of external tooth type, positioned at the rear of camera lens；Rolling ring (8) is located at camera
(1) in front of.
3. heavy caliber camera gravity deformation according to claim 1 and 2 affects test equipment to as matter,
It is characterized in that：Described rolling ring (8) is located in front of camera (1), and internal diameter is more than φ 1800mm, with rolling
Wheel (9) is cylindrical tangent, realizes -90 °～+180 ° of angle range motion.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908262A (en) * | 2017-03-13 | 2017-06-30 | 北京航空航天大学 | A kind of five degree of freedom pose governor motion |
| CN110186642A (en) * | 2019-06-12 | 2019-08-30 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of schlieren off axis paraboloidal mirror disappears gravity three-dimensional regulation bracket |
| CN112033298A (en) * | 2020-08-25 | 2020-12-04 | 大连理工大学 | Spacecraft cabin body weight deformation measurement method based on motionless datum points |
| WO2024065264A1 (en) * | 2022-09-28 | 2024-04-04 | 深圳华大生命科学研究院 | Sample processing system and method |
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| JPH07187100A (en) * | 1993-12-28 | 1995-07-25 | Nec Corp | Simulation device for spacecraft dynamics |
| CN101660966A (en) * | 2009-09-18 | 2010-03-03 | 中国科学院长春光学精密机械与物理研究所 | Device for simulating dynamic imaging of TDI CCD camera |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908262A (en) * | 2017-03-13 | 2017-06-30 | 北京航空航天大学 | A kind of five degree of freedom pose governor motion |
| CN110186642A (en) * | 2019-06-12 | 2019-08-30 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of schlieren off axis paraboloidal mirror disappears gravity three-dimensional regulation bracket |
| CN110186642B (en) * | 2019-06-12 | 2023-12-29 | 中国空气动力研究与发展中心高速空气动力研究所 | Off-axis parabolic mirror gravity-eliminating three-dimensional adjusting bracket for schlieren instrument |
| CN112033298A (en) * | 2020-08-25 | 2020-12-04 | 大连理工大学 | Spacecraft cabin body weight deformation measurement method based on motionless datum points |
| CN112033298B (en) * | 2020-08-25 | 2021-08-20 | 大连理工大学 | Spacecraft cabin body weight deformation measurement method based on motionless datum points |
| WO2024065264A1 (en) * | 2022-09-28 | 2024-04-04 | 深圳华大生命科学研究院 | Sample processing system and method |
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Application publication date: 20170215 |