CN208860469U - A kind of contactless vibration detection device of solar sail structure - Google Patents
A kind of contactless vibration detection device of solar sail structure Download PDFInfo
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- CN208860469U CN208860469U CN201821613998.2U CN201821613998U CN208860469U CN 208860469 U CN208860469 U CN 208860469U CN 201821613998 U CN201821613998 U CN 201821613998U CN 208860469 U CN208860469 U CN 208860469U
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- solar sail
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Abstract
The utility model discloses a kind of contactless vibration detection devices of solar sail structure, including solar sail structural body part and vibrational excitation detection part；Solar sail structural body part includes solar sail model and fixed support arm, and the vibrational excitation detection part includes vibration excitor, computer, cultellation device, power amplifier and binocular vision detection system.The utility model, which carries out vibration detection to solar sail structural model, to have great importance.
Description
Technical field
The utility model relates to the vibration detection fields of solar sail structure, and in particular to a kind of solar sail structure it is non-contact
Formula vibration detection device.
Background technique
From the twentieth century sixties, to solve the problems such as spacecraft coarse scale structures transmission envelop limits, space can be opened up
Opening structure technology is generated, and accumulates the trend developments such as huge towards light weight, foldable, full developable surface.The deployable solar sail in space
Spacecraft carries out space travel using the pressure generated when being sunlighted.This power resources are known as " optical pressure ", and light has
Duality principle, when the momentum of photon is on the very strong sail face of reflecting properties, the momentum generated can be to the plane of reflection
Form thrust；The thrust that one photon generates is very little, but when solar sail face area is sufficiently large, will be assembled larger
Thrust；Since space is vacuum, this constant thrust can continue to push the deployable Solar sail spacecraft boat in space
Row.It is this not only not needed fuel but also just attract gradually various countries' aerospace scientific research personnel in the spacecraft of space with follow-on mission
Note that more and more space flight scientific research institutions also expand the research of the deployable Solar sail spacecraft in space.Japanese universe boat
Develop No. IKAROS of empty research and development organization (JAXA) is the first solar sail airship to make a successful trial flight in the world, IKAROS sail face
Using the square film of side length about 14m, the area on surface 5% pastes flexible thin-film solar cell component, demonstrates too
The positive application feasibility in solar sail that can generate electricity, IKAROS solar sail airship has been used for Venus probe at present.US Airways boat
The Nano Sail-D solar sail of its office (NASA) research and development is the small-sized solar sail that another money successfully realizes lift-off, its sail face choosing
With the CP1 polyimide film material with a thickness of 2.0um, front is aluminized；Support rod selects rollable material, so as to store
In the space of very little.Aviation of Germany space agency (DLR) and European Space Agency (ESA) have developed jointly a 20m x 20m's
Solar sail model, this deployable solar sail sail in space face structural model are the polymer thins using 4 pieces of isosceles right triangles
Film and 4 compressible support frame structure compositions.What the sail face structure of the solar sail structural body part of the utility model used
It is exactly this class model, it is therefore an objective to essential vibration during expansion of existing space deployable solar sail sail face structural model
It is dynamic to be studied, it is tested by the vibration detection test and other necessity that carry out multiple before lift-off to probe into the practicality energy,
Expansion operation is able to achieve after ensuring the deployable Solar sail spacecraft lift-off in space.In practice, the vibration because of unfolding mechanism and other
The combined influence of factor, may result in sail face can not be unfolded as expected in space.2015, Surrey space center
(SSC) the DeorbitSail cubes of star spacecraft lift-off designed, but in astronavigation, sail face fails expansion.Cause
This, carries out vibration detection to solar sail structural model and has great importance.
Utility model content
In order to overcome shortcoming and deficiency of the existing technology, the utility model provides a kind of the non-contact of solar sail structure
Formula vibration detection device.
The present apparatus projects to form several incident points with cultellation device in the deployable solar sail model surface in space, and then signal is sent out
Raw device issues signal and reaches vibration excitor after power amplifier amplifies, and causes the vibration of solar sail structural body part；It is a pair of high
Information of the binocular vision system acquisition incident point of fast camera composition in vibration processes, the vibration information of acquisition are transferred to calculating
Machine can obtain the vibrational state of the deployable solar sail model in space through analyzing.
The utility model adopts the following technical solution:
A kind of contactless vibration detection device of solar sail structure, including solar sail structural body part and vibrational excitation
Detection part；
Solar sail structural body part includes solar sail model and fixed support arm, and the fixed support arm is for branch
The solar sail model for supportting expansion, makes solar sail model keep vertical placement status, and the fixed support arm is solid by gantry structure
It is scheduled on experimental bench；
The vibrational excitation detection part includes vibration excitor, computer, cultellation device, power amplifier and binocular vision detection
System, the vibration excitor share two, are symmetricly set on solar sail model, and computer is connect with power amplifier, and power is put
Big device driving vibration excitor evokes the vibration of solar sail model；
The front of solar sail model is arranged in the cultellation device, forms multiple projections in the front projection of solar sail model
Point；
The binocular vision detection system is arranged in the front of solar sail model, solar sail model its within sweep of the eye,
The vibration information of the binocular vision detection system detection subpoint is transferred to computer and obtains the vibration of deploying solar sail model
State.
The binocular vision detection system includes a pair of of high speed camera, fluid head and camera sliding rail, the pair of high speed
Camera is mounted on fluid head, and fluid head is mounted on camera sliding rail.
The solar sail model isosceles right triangle sail face equal by four isometric retractable support levers and four pieces
Film is constituted.
The present apparatus further includes detection device platform, and binocular vision detection system and cultellation device are arranged on detection device platform.
The cultellation device is arranged between a pair of of high speed camera.
The course of work of the invention:
Cultellation device forms multiple incident points in the solar sail model front projection of space development；
Computer issues signal and reaches vibration excitor after power amplifier amplifies, and evokes the vibration of solar sail model surface；
Information of the binocular vision detection system acquisition incident point in vibration processes, is transferred to computer, and computer passes through
Analysis obtains the vibrational state of solar sail model.
The utility model has the beneficial effects that
(1) the utility model using a pair of of high speed camera composition binocular vision system to solar sail structural body part into
Row vibration detection, its advantage is that: do not have to directly contact testee, so the dynamic property of testee is not influenced；Use throwing
Emitter can disposably in space, deployable solar sail model surface projects to form several incident points, and then binocular vision system is simultaneously
Several incident points are detected, experimental precision can be effectively improved；
(2) the utility model places vibration excitors at different locations using two and carries out excitings, can carry out separate unit excitation,
Two are motivated simultaneously, enrich the deformation mode on elliptical cylinder-shape shell surface；Vibration excitor has the characteristics that efficient, distortionless, Ke Yiyou
Effect improves the performance of experimental provision.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the main view of the utility model solar sail model；
Fig. 3 is the left view of the utility model.
Specific embodiment
Below with reference to examples and drawings, the utility model is described in further detail, but the reality of the utility model
It is without being limited thereto to apply mode.
Embodiment
As shown in Figure 1-Figure 3, a kind of contactless vibration detection device of solar sail structure, including solar sail structural body
Part and vibrational excitation detection part；
Solar sail structural body part includes solar sail model 1, fixed support arm 4 and experimental bench 6.
The solar sail model is by four isometric retractable support lever 1-1 and four pieces of equal isosceles right triangle sails
Face film 1-2 is constituted.During expansion, retractable support lever gradually extends solar sail model, and the sail face film of compression is gradually
Expansion, until being fully deployed.The fixed support arm is used to support the solar sail model after expansion, and makes the solar sail after expansion
Model keeps vertical placement status, and the link position of fixed support arm and solar sail model is fixed on dragon in a manner of thread connection
On door, the bottom of gantry structure is fixed on experimental bench, and the experimental bench 6 is aluminum profile seat, and it is deployable too to be placed in space
Positive sail model rear end.
The fixed support arm is used to support the solar sail model of expansion, puts the entire plane holding of solar sail model vertically
State is set, and a diagonal line of solar sail model is parallel to horizontal plane, another perpendicular to horizontal plane.
The vibrational excitation detection part includes vibration excitor 5, computer 12, cultellation device 11, power amplifier 3 and binocular vision
Feel detection system, the vibration excitor and vibration excitor pedestal are placed on experimental bench 6, and the vibration excitor there are two, is symmetricly set on
On the diagonal line of solar sail model, vibration excitor mandril is contacted with the retractable support lever of solar sail model, and computer generates signal
Input power amplifier 3 further drives vibration excitor to evoke the vibration of the solar sail model surface of expansion.
The binocular vision detection system includes a pair of of high speed camera 10, fluid head 9 and camera sliding rail 8, the pair of
High speed camera 10 is mounted on fluid head 9, and fluid head is mounted on camera sliding rail.
The fluid head 9 is that fluid pressure type adjusts holder, can carry heavier camera, by the tune for adjusting fluid head 9
Section knob can be finely adjusted the shooting angle of high speed camera 10；The fluid head 9 is mounted on camera sliding rail 8, in sliding rail
On to move back hydrodynamic pressure holder 9 camera site of camera can be changed；When excitation causes the vibration of sail face film 1-2, binocular vision
The vibration information of information of the incident point 2 in vibration processes on deployable 1 surface of solar sail model in system acquisition space, acquisition passes
It is defeated by computer 12, the vibrational state of the deployable solar sail model 1 in space can be obtained through analyzing.
The camera sliding rail is arranged on detection device platform, and the middle position of two high speed cameras is arranged in cultellation device.
Computer further includes display screen 13.
The course of work of the utility model:
Cultellation device forms multiple incident points in the solar sail model front projection of space development；
Computer issues signal and reaches vibration excitor after power amplifier amplifies, and evokes the vibration of solar sail model surface；
Information of the binocular vision detection system acquisition incident point in vibration processes, is transferred to computer, and computer passes through
Analysis obtains the vibrational state of solar sail model.
By testing repeatedly, the data acquired are integrated to reduce experimental error.
In the present embodiment, the sail face structure of the deployable solar sail model in measurand space is mainly by 4 isometric supports
Bar and 4 pieces of congruent isosceles right triangle sail face film compositions.Its two right-angle side side length of topsail face film is 1000mm, thickness
It is 7.5 μm, material selection polyimides Kapton film, two sides is aluminized to improve the reflectivity to sunlight；Scalability branch
Strut material selection carbon fibre composite (CFRP), by resin injection moulding (RI) technology manufacture, this support rod is rollable
On center shaft, inflation can be such that support rod is gradually unfolded thereto for winding, and support rod still has enough rigidity after deployment.
Vibration excitor selects the HEV series vibration excitor of Nanjing Fo Neng Scientific and Technical Industry Co., Ltd production, the series excitation element
Product is small, light-weight.The vibration excitor of model HEV-50 is selected, maximum exciting force is 50N, and bandwidth range is 0~3000Hz, most
Large amplitude ± 5mm has many advantages, such as that efficient, energy conservation and the distortion factor are small.
High speed camera selects the high-speed camera of NAC image technique Co., Ltd, Japan production, model HX-7S, HX-7S
High-speed camera is compact light and handy, and up to 2000fps when high definition resolution ratio, electronic shutter is up to 10 milliseconds to 1.1 microseconds, resolution ratio
For 2560x1920 pixel, there is high-resolution, high sensitivity, independent and ultrafast imaging technique；Fluid head is selected luxuriant and rich with fragrance graceful
The fluid head of this company production, is used to verify the levelness of platform equipped with level meter thereon.Sliding rail selects Fei Mansi company raw
The model Famous F8PRO photography sliding rail of production, sliding rail material is carbon fiber, and light-weight, tensile strength is high, gliding smoothing stream
Freely.High speed camera is mounted on fluid head, and the adjusting knob by adjusting fluid head can be to the shooting angle of high speed camera
It is finely adjusted；Fluid head is mounted on camera sliding rail, and moving back and forth fluid head on the slide rail can be changed the shooting position of camera
It sets.Detection device platform 7 is made of aluminum profile, aluminium sheet and corner fittings etc., is used to support the contactless vibration detection of the utility model
System.Cultellation device selects the model PRO-SPOT/A type cultellation device of Geodetic System company production, and single can project more
Up to more than 2000 a points, precision reaches 10 μm.
Computer selects the IPC610 cabinet of Taiwan Advantech company production, PCA-6006 mainboard, Pentium IV
2.4G Intel CPU。
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by described
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (5)
1. a kind of contactless vibration detection device of solar sail structure, which is characterized in that including solar sail structural body part
And vibrational excitation detection part；
Solar sail structural body part includes that solar sail model and fixed support arm, the fixed support arm are used to support exhibition
The solar sail model opened, makes solar sail model keep vertical placement status, and the fixed support arm is fixed on by gantry structure
On experimental bench；
The vibrational excitation detection part includes vibration excitor, computer, cultellation device, power amplifier and binocular vision detection system
System, the vibration excitor share two, are symmetricly set on solar sail model, and computer is connect with power amplifier, power amplification
Device driving vibration excitor evokes the vibration of solar sail model；
The front of solar sail model is arranged in the cultellation device, forms multiple incident points in the front projection of solar sail model；
The binocular vision detection system is arranged in the front of solar sail model, solar sail model its within sweep of the eye, it is described
The vibration information of binocular vision detection system detection subpoint is transferred to computer and obtains the vibration shape of deploying solar sail model
State.
2. contactless vibration detection device according to claim 1, which is characterized in that the binocular vision detection system
Including a pair of of high speed camera, fluid head and camera sliding rail, the pair of high speed camera is mounted on fluid head, fluid head
It is mounted on camera sliding rail.
3. contactless vibration detection device according to claim 1, which is characterized in that the solar sail model is by four
Isometric retractable support lever and four pieces of equal isosceles right triangle sail face films are constituted.
4. contactless vibration detection device according to claim 1, which is characterized in that it further include detection device platform, it is double
Mesh vision detection system and cultellation device are arranged on detection device platform.
5. contactless vibration detection device according to claim 2, which is characterized in that the setting of cultellation device is in a pair of of high speed
Between camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821613998.2U CN208860469U (en) | 2018-09-30 | 2018-09-30 | A kind of contactless vibration detection device of solar sail structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821613998.2U CN208860469U (en) | 2018-09-30 | 2018-09-30 | A kind of contactless vibration detection device of solar sail structure |
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| Publication Number | Publication Date |
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| CN208860469U true CN208860469U (en) | 2019-05-14 |
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| CN201821613998.2U Expired - Fee Related CN208860469U (en) | 2018-09-30 | 2018-09-30 | A kind of contactless vibration detection device of solar sail structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109000783A (en) * | 2018-09-30 | 2018-12-14 | 华南理工大学 | A kind of contactless vibration detection device and method of solar sail structure |
-
2018
- 2018-09-30 CN CN201821613998.2U patent/CN208860469U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109000783A (en) * | 2018-09-30 | 2018-12-14 | 华南理工大学 | A kind of contactless vibration detection device and method of solar sail structure |
| CN109000783B (en) * | 2018-09-30 | 2023-09-26 | 华南理工大学 | Non-contact vibration detection device and method for solar sail structure |
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| GR01 | Patent grant | ||
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Granted publication date: 20190514 Termination date: 20210930 |