CN208383292U - Astromesh deployable reflector vibration detection device - Google Patents

Abstract

The utility model discloses a kind of Astromesh deployable reflector vibration detection devices, described device includes Astromesh deployable reflector, vibratory drive mechanism and vibration detection mechanism, the vibratory drive mechanism is connect with Astromesh deployable reflector, for driving Astromesh deployable reflector to generate vibration, the vibration detection mechanism includes two groups of binocular vision systems, cubic support, multiple acceleration transducers and processing equipment, two groups of binocular vision systems are symmetricly set in cubic support, for detecting the index point region on Astromesh deployable reflector surface, the multiple acceleration transducer is arranged on Astromesh deployable reflector, and it is uniformly distributed around Astromesh deployable reflector, the processing equipment respectively with two groups of binocular vision systems, multiple acceleration transducer connections.The utility model detects Astromesh deployable reflector using vision and acceleration transducer, by combining the advantage of two kinds of detection modes, keeps testing result more accurate.

Description

Astromesh deployable reflector vibration detection device

Technical field

The utility model relates to a kind of vibration detection device, especially a kind of Astromesh deployable reflector vibration detection dress It sets, belongs to the vibration detection field of space stretched out structure.

Background technique

Extensible communication antenna is the key that for various task application spacecraft subsystem components, such as deep space exploration Device, communication, scouting and environmental monitoring, and indispensable role is played in modern aerospace application.

Space communication environment is flooded by the different electromagnetic signals of various frequencies or energy.In order to quickly and correctly identify mesh Information is marked, high-gain and high-resolution demand are increasingly increased, this has motivated the expansion of antenna aperature.

However, the quality and volume of antenna are limited due to the limitation of the current conveying capacity of rocket.Therefore, modern The heavy caliber system of space flight urgently needs deployable antenna.The typical deployable antenna to work in orbit is that annular truss can Similar structures antenna made of opening up antenna and being developed as its optimization, small with quality, structure is simple, small excellent of surface distortion Point.It is mainly by expandable truss support construction, steel wire and cable system (including preceding net, rear net and vertical-rise cable).

Unfurlable antenna is collected in rocket radome fairing during transmitting, and then gradually deployment is in orbit, finally Form paraboloid.Deployable state is transformed into from collapsed state to be known as disposing.Deployment is a considerably complicated dynamic process, by To the influence of various non-linear factors, such as structural flexibility, frictional force, gap and rope net tension etc..Therefore, to the accurate pre- of deployment Survey is challenging, but extremely important for Antenna Design process.The emphasis of existing much researchs is about antenna The tension analysis of the cable net structure based on finite element analysis of deployment process, but the vibration after completing about allocating antenna is ground Study carefully few.Current more experimental study is only rested on to cantilever beam, and the analog study of the easy structures such as aircraft wing can open up complexity Flexible antenna structure research still have some deficits.

The structure that antenna expansion is easiest to evoke vibration after completing is reflection reticular structure.In view of reflector net matter itself Amount is light, and nets hole with gap, is one using vision-based detection and preferably selects.Vision-based detection can measure number with quick obtaining According to the unobvious quality for increasing script structure, the parameter of damping ratio, modal frequency (serves as mark using the LED light of very light weight The quality of point can be ignored) it is compared with monocular vision, binocular vision can calculate the three-dimensional coordinate of spatial point, to obtain The parameter information of the structural vibration of object multiple spot is taken, and is not limited solely to the vibration information of a bit.

Utility model content

Purpose of the utility model is to solve the defect of the above-mentioned prior art, day can be opened up by providing a kind of annular truss Linearly coupled detection device, the device detect Astromesh deployable reflector using vision and acceleration transducer, pass through by The advantage of two kinds of detection modes combines, and keeps testing result more accurate.

The purpose of this utility model can be reached by adopting the following technical scheme that:

Astromesh deployable reflector vibration detection device, including Astromesh deployable reflector, vibratory drive mechanism and vibration Testing agency, the vibratory drive mechanism is connect with Astromesh deployable reflector, for driving Astromesh deployable reflector to generate Vibration, the vibration detection mechanism include that two groups of binocular vision systems, cubic support, multiple acceleration transducers and processing are set Standby, two groups of binocular vision systems are symmetricly set in cubic support, for detecting Astromesh deployable reflector surface Index point region, the multiple acceleration transducer are arranged on Astromesh deployable reflector, and along Astromesh deployable reflector Around be uniformly distributed, the processing equipment is connect with two groups of binocular vision systems, multiple acceleration transducers respectively.

Further, the Astromesh deployable reflector includes supporting mechanism and reflector net, and the reflector net setting is being propped up It on support mechanism, and reflects net surface and is equipped with multiple index points, the multiple acceleration transducer is arranged on supporting mechanism, and edge It is uniformly distributed around supporting mechanism.

Further, the supporting mechanism is polyhedral structure, has multiple sides, top and bottom are positive polygon Shape, each side have two ribs, and every rib includes two vertical support rods and two axle sleeves, and described two axle sleeves are respectively with two The both ends of the vertical support rod of root connect, and every vertical support rod is equipped with abutment sleeve and sliding sleeve, and adjacent two ribs are determined It is connected between position sleeve and sliding sleeve by rigid rod, the connecting pin of the rigid rod and abutment sleeve, sliding sleeve is Hinged end.

Further, the index point on the reflection net surface is LED index point, and the LED index point includes the first LED Index point and the 2nd LED index point, shape rounded distribution of the first LED index point according to reflector net, the 2nd LED Index point is distributed along the centre symmetry line equidistant line of reflector net.

Further, every group of binocular vision system includes that two high speed cameras, a guide rail, two sliding blocks and two are hydraulic Holder, described two sliding blocks are slidably arranged on guide rail, and two high speed cameras, two sliding blocks and two fluid heads are It corresponds, every high speed camera is arranged on corresponding fluid head, and each fluid head is fixed on corresponding sliding block；Two The guide rail of group binocular vision system is symmetrically fixed in cubic support.

Further, the guide rail of two groups of binocular vision systems is symmetrically fixed in cubic support by fixed plate.

Further, the vibratory drive mechanism includes vibration excitor and signal processing module, the vibration excitor and annular purlin The connection of frame Deployable antenna, the signal processing module are connect with vibration excitor.

Further, the signal processing module includes signal generator and power amplifier, the signal generator, function Rate amplifier and vibration excitor are sequentially connected.

Further, the processing equipment includes computer, A/D capture card and filter circuit, the computer respectively with Two groups of binocular vision system connections, and pass sequentially through A/D capture card, filter circuit and connect respectively with multiple acceleration transducers.

The utility model have compared with the existing technology it is following the utility model has the advantages that

1, by the way of this external drive of vibratory drive mechanism, driving Astromesh deployable reflector produces the utility model Raw vibration, is easy to produce biggish exciting force, and using vision and acceleration transducer simultaneously to Astromesh deployable reflector into Row detection, vision-based detection have very high flexibility, and acceleration transducer can detecte signal and handle in time, by by two kinds The advantage of detection mode combines, and keeps testing result more accurate.

2, the Astromesh deployable reflector of the utility model has supporting mechanism and reflector net, and acceleration transducer is arranged On supporting mechanism, to detect the vibration information of supporting mechanism, and two groups of binocular vision systems detect the index point on reflector nets Region, to detect the vibration information of reflector net, so that the vibration using processing equipment comparative analysis supporting mechanism and reflector net is believed Relationship between breath can provide the experimental data of the vibration relationship between supporting mechanism and reflector net.

3, devised above the supporting mechanism of the utility model using the abutment sleeve of more rigid rods and adjacent two ribs, Two loop structure made of sliding sleeve is hinged, lower section same design using more rigid rods and adjacent two ribs positioning Two loop structure made of sleeve, sliding sleeve are hinged shares four loop structures, substantially increases the stabilization of supporting mechanism Property.

4, the binocular vision system of the utility model is equipped with two high speed cameras, by two sliding blocks on moving guide rail, The horizontal position of adjustable two high speed cameras, to change the positional relationship between two high speed cameras, it is ensured that index point The vision-based detection of two high speed cameras within sweep of the eye, thus acquisition within sweep of the eye all index points space sit Mark, can acquire complete image, pass through the damping in pitch knob and panorama rotation knob of two fluid heads, adjustable two height The pitch angle and level angle of fast camera.

5, the utility model detects Astromesh deployable reflector using vision-based detection means, due to non-contacting survey Amount mode, can achieve minimum limit influences the intrinsic frequency and modal frequency of Astromesh deployable reflector, is subsequent experiment And application provides more true accurate data.

6, the utility model both compensates for vision-based detection and exists in such a way that LED light source serves as the index point of vision-based detection The disadvantage of picture contrast deficiency in the insufficient situation of illumination condition, and illustrate the flexibility and good adaptation of vision-based detection Property.

Detailed description of the invention

Fig. 1 is the Astromesh deployable reflector vibration detection device general structure schematic diagram of the utility model embodiment 1.

Fig. 2 is the main view of the Astromesh deployable reflector vibration detection device of the utility model embodiment 1.

Fig. 3 is the top view of the Astromesh deployable reflector vibration detection device of the utility model embodiment 1.

Fig. 4 is the right view of the Astromesh deployable reflector vibration detection device of the utility model embodiment 1.

Fig. 5 is the structural schematic diagram of supporting mechanism in the Astromesh deployable reflector of the utility model embodiment 1.

Fig. 6 is the structural schematic diagram of the one of binocular vision system of vibration detection mechanism of the utility model embodiment 1.

Fig. 7 is the Astromesh deployable reflector method for detecting vibration flow chart of the utility model embodiment 1.

Wherein, 1- supporting mechanism, the vertical support rod of 101- first, the vertical support rod of 102- second, the first axle sleeve of 103-, The second axle sleeve of 104-, 105- abutment sleeve, 106- sliding sleeve, 107- rigid rod, 108- firm banking, 2- reflector net, 3- electricity Source, the first LED index point of 4-, the 2nd LED index point of 5-, 6- vibration excitor, 7- signal generator, 8- power amplifier, 9- binocular Vision system, the first high speed camera of 901-, the second high speed camera of 902-, 903- guide rail, the first sliding block of 904-, 905- second are sliding Block, the first fluid head of 906-, the second fluid head of 907-, 10- cubic support, 11- acceleration transducer, 12- fixed plate, 13-A/D capture card, 14- filter circuit, 15- host, 16- display.

Specific embodiment

The present invention will be further described in detail with reference to the embodiments and the accompanying drawings, but the implementation of the utility model Mode is without being limited thereto.

Embodiment 1:

As shown in Figure 1 to 4, a kind of Astromesh deployable reflector vibration detection device, the device are present embodiments provided Including Astromesh deployable reflector, vibratory drive mechanism and vibration detection mechanism.

As shown in fig. 1~fig. 5, the Astromesh deployable reflector is that spatial flexible stretches Astromesh deployable reflector, Including supporting mechanism 1 and reflector net 2, reflector net 2 is arranged on supporting mechanism 1.

Further, the supporting mechanism 1 is polyhedral structure, has ten sides, and top and bottom are positive odd plots of land that can be cultivated Shape, each side has two ribs, and by taking any three adjacent sides as an example, a rib of medial side face is an adjacent side One rib in face, another rib of medial side face is a rib of another adjacent side, therefore the rib of ten sides is shared Ten, every rib includes the first vertical support rod 101, the second vertical support rod 102, the first axle sleeve 103 and the second axle sleeve 104, First vertical support rod 101 and the second vertical support rod 102 constitute a pair of vertical support rod, the first vertical support rod 101 and the The upper end of two vertical support rods 102 is connected by the first axle sleeve 103, and lower end is connected by the second axle sleeve 104, the first vertical support It is equipped with abutment sleeve 105 and sliding sleeve 106 on bar 101 and the second vertical support rod 102, specifically, the first vertical support The sliding sleeve that abutment sleeve 105 on bar 101 is arranged on the first vertical 101 lower end of support rod, the first vertical support rod 101 106 are slidably arranged in any position between the first vertical 101 both ends of support rod, i.e. the sliding sleeve 106 can be perpendicular first It is slided up and down between the both ends of support bars 101, the setting of abutment sleeve 105 on the second vertical support rod 102 is vertical second The upper end of support rod 102, the sliding sleeve 106 on the second vertical support rod 102 are slidably arranged in the second 102 liang of vertical support rod Any position between end, the i.e. sliding sleeve 106 can slide up and down between the both ends of the second vertical support rod 102；Phase It is connected between the abutment sleeve 105 and sliding sleeve 106 of adjacent two ribs by rigid rod 107, specifically, adjacent two ribs are set as First rib and the second rib, the vertical support of first of abutment sleeve 105 and the second rib on the vertical support rod 101 of the first of the first rib It is connected between sliding sleeve 106 on bar 101 by rigid rod 107, the sliding sleeve on the vertical support rod 101 of the first of the first rib It is connected between abutment sleeve 106 on first vertical support rod 101 of cylinder 105 and the second rib by rigid rod 107, the first rib Sliding sleeve 106 on second vertical support rod 102 of abutment sleeve 105 and the second rib on the second vertical support rod 102 it Between connected by rigid rod 107, second of sliding sleeve 105 and the second rib on the vertical support rod 102 of the second of the first rib is erected It is connected between abutment sleeve 106 on support bars 102 by rigid rod 107, that is to say, that the rigidity between adjacent two ribs Bar 107 has four, and every rigid rod 107 is rigid thin rod, and the connecting pin with abutment sleeve 105, sliding sleeve 106 is hinge End is connect, control sliding sleeve 106 is freely up and down slided along the first vertical support rod 101 and/or the second vertical support rod 102, together When Astromesh deployable reflector each rib shrink therewith, wherein two rigid rods 107 are located at the top of supporting mechanism 1, and with Corresponding two first vertical support rods 101 are angled, which forms one on a corresponding side Fixed angle, similar to the structure of scissors, therefore 20 rigid rods 107 above entire supporting mechanism constitute two loops Structure, in addition two rigid rods 107 are located at the lower section of supporting mechanism 1, and with corresponding two second vertical support rods 102 at one Determine angle, two rigid rods 107 shape on a corresponding side is at a certain angle, similar to the structure of scissors, therefore 20 rigid rods 107 below entire supporting mechanism also constitute two loop structures, by four loop structures, mention significantly The high stability of supporting mechanism 1, when supporting mechanism 1 is expanded to maximum area, all sliding sleeves 106 are moved to dead point position It sets；Preferably, every rib further includes firm banking 108, the lower end of the second vertical support rod 102 and the fixed company of firm banking 108 It connects, the foundation bolt on firm banking 108 and ground are connected to fixing end, further increase the stability of supporting mechanism 1.

Further, the reflector net 2 is the net with aperture, has elasticity, four sections of ropes form a node, whole It is a regular structure, class regualr decagon, ten nodes and supporting mechanism 1 of 2 outmost turns of reflector net is woven by rope Ten vertex binding, specifically, by ten node bindings of 2 outmost turns of reflector net in the second vertical 102 upper end of support rod On abutment sleeve 105；2 surface of reflector net is equipped with multiple index points, which is LED index point, and LED index point is by power supply 3 Driving, including the first LED index point 4 and the 2nd LED index point 5, the first LED index point 4 are rounded according to the shape of reflector net 2 Distribution, the 2nd LED index point 5 are distributed along the centre symmetry line equidistant line of reflector net 2, share 15, wherein the first LED is marked The light source colour of will point 4 is white, and the light source colour of the 2nd LED index point 5 is blue.

In the present embodiment, the cross section size dimension of supporting mechanism 1 is 986mm；First vertical support rod 101 and second The geometric dimension of vertical support rod 102 is Φ 20x1100mm, and material is carbon fiber pipe；Abutment sleeve 105 and sliding sleeve 106 Diameter be 0.3m, be highly 1.2m；The material structure of rigid rod 107 is identical, and geometric dimension is Φ 20x950mm, material For carbon fiber pipe, elasticity modulus 207GPa, density 1.8X10³kg/m³；Foundation bolt on firm banking 108 having a size of 8x3mm；Reflector net 2 is worked out by wire；First LED index point 4 selects the LTS- of LOTS scientific & technical corporation production RNH4590-BGW model, 5 type selecting of the 2nd LED index point is identical as the first LED index point 4, geometric dimension be outer diameter 45mm × Internal diameter 13mm × high 22mm, voltage rating 22V, power 2.4W, power supply 3 select the first LED index point 4 and the 2nd LED mark The product corollary equipment of will point 5.

The vibratory drive mechanism is for driving Astromesh deployable reflector to generate vibration comprising vibration excitor 6 and signal Processing module, signal processing module include signal generator 7 and power amplifier 8, and the vibration excitor 6 of the present embodiment has four, and four Platform vibration excitor 6 is symmetrically installed and fixes on the ground, and is connect by mandril with four ribs of supporting mechanism 1, signal generator 7, power amplifier 8 and every vibration excitor 6 are sequentially connected, and regulation power amplifier 8, selection signal source frequency will be believed as required Number source output voltage is transferred to ± 5V (RMS)；Four vibration excitors 6 integrally apply excitation, control support to Astromesh deployable reflector The vibration of mechanism 1 and reflector net 2.

In the present embodiment, every vibration excitor 6 selects model JZQ-20A, and maximum exciting force is 20kg, force constant 14/ 8, maximum displacement 5mm, frequency range 10-2000Hz；Signal generator 7 selects model Angilent-33220A, and manufacture is single Position is Agilent Instrument Ltd., can provide the sine wave signal of -15-+15V；Power amplifier 8 selects model YE5872 is bought from Jiangsu Lianneng Electronic Technology Co., Ltd., signal can be amplified to -120-+120V.

As shown in Fig. 1~Fig. 6, the vibration detection mechanism includes two groups of binocular vision systems 9, cubic support 10, four A acceleration transducer 11 and processing equipment, two groups of binocular vision systems 9 are symmetricly set in cubic support 10, specifically along ring The symmetry axis of shape truss Deployable antenna is symmetrically mounted in cubic support 10, for detecting the index point area on 2 surface of reflector net Two groups of binocular vision systems 9 are mounted on two symmetrical struts of cubic support 10 by domain, the present embodiment, and four add Velocity sensor 11 is evenly distributed on around supporting mechanism 1, and specifically, four acceleration transducers 11 can be opened up along annular truss The symmetry axis of antenna is uniformly mounted on the upper end of the first vertical support rod 101 of supporting mechanism 1, and processing equipment is double with two groups respectively 9, four acceleration transducers 11 of mesh vision system connect.

Further, every group of binocular vision system 9 includes including the first high speed camera 901, the second high speed camera 902, leads Rail 903, the first sliding block 904, the second sliding block 905, the first fluid head 906 and the second fluid head 907, left side binocular vision system The guide rail 903 of system 9 is fixed on the left side strut in cubic support 10, and the guide rail 903 of the right binocular vision system 9 is fixed on On the right strut in cubic support 10, specifically, the guide rail 903 of left side binocular vision system 9 is first fixed on fixed plate On 12, then fixed plate 12 is fixed on the left side strut in cubic support 10, similarly, first by the right binocular vision system 9 guide rail 903 is fixed in fixed plate 12, then fixed plate 12 is fixed on the right strut in cubic support 10, first Sliding block 904 and the second sliding block 905 are slidably arranged on guide rail 903, i.e. the first sliding block 904 and the second sliding block 905 can be in guide rails It is moved on 903, the first high speed camera 901 and the second high speed camera 902 are symmetrically installed, and the first high speed camera 901 is arranged first On fluid head 906, the first fluid head 906, the setting of the second high speed camera 902 are connected especially by 3/8 Inches Thread interface On the second fluid head 907, the second fluid head 907, the first fluid head are connected especially by 3/8 Inches Thread interface 906 are fixed on the first sliding block 904, are mounted on the first sliding block 904 especially by bottom thread hole, the second fluid head 907 It is fixed on the second sliding block 905, is mounted on the second sliding block 905 especially by bottom thread hole, pass through mobile first sliding block 904 With the second sliding block 905, the horizontal position of adjustable first high speed camera 901 and the second high speed camera 902, thus change first Positional relationship between high speed camera 901 and the second high speed camera 902, it is ensured that LED index point is in 901 He of the first high speed camera The vision-based detection of second high speed camera 902 within sweep of the eye, thus acquisition within sweep of the eye all LED index points space sit Mark rotates knob by the damping in pitch knob and panorama of the first fluid head 906 and the second fluid head 907, adjustable The pitch angle and level angle of first high speed camera 901 and the second high speed camera 902.

Further, the pitch angle of the first high speed camera 901 and the second high speed camera 902 is 120 degree, the first high speed Horizontal distance between camera 901 and the second high speed camera 902 is 90cm, the first high speed camera 901 and the second high speed camera 902 Camera lens and the distance between reflector net 2 be 150cm, the field range of left side binocular vision system 9 includes reflector net 2 left half Side, the field range of the right binocular vision system 9 include the right one side of something of reflector net 2, and the visual field of both sides binocular vision system 9 is overlapped model It encloses including the 2nd LED index point 5 on 2 symmetry axis of reflector net.

Further, the processing equipment includes computer, A/D capture card 13 and filter circuit 14, computer respectively with Two groups of binocular vision systems 9 connect, and pass sequentially through A/D capture card 13, filter circuit 14 respectively with four acceleration transducers 11 connections, wherein computer includes host 15 and display 16, the first high speed camera 901 of two groups of binocular vision systems 9 and the Two high speed cameras 902 are connect by USB data line with host 15, the first high speed camera 901 of two groups of binocular vision systems 9 and the Two high speed cameras 902 demarcate respective coordinate system respectively, and according to the public domain unified coordinate system in visual field, the first high speed phase By certain sampling time progress Image Acquisition, the host 15 for passing through computer carries out image for machine 901 and the second high speed camera 902 The vibrational coordinate comparison original coordinates of processing, index point can analyze out vibration displacement, be obtained according to vibration informations such as vibration displacements Curvature information to reflector net 2 can carry out image reconstruction and splicing, specially by vibration informations such as the vibration displacements of reflector net 2 It is converted to curvature information, and rebuilds the model of reflector net 2 according to curvature information, by continuous acquisition data and reconstruction image can be with Each vibration parameters of Astromesh deployable reflector, such as modal frequency, the damping ratio vibration parameters of reflector net 2 are analyzed, are applied Metamorphosis of the visualization technique in 16 real-time display reflector net 2 of display, the support knot that acceleration transducer 11 will test Structure vibration signal is analyzed, comparative analysis branch under the effect of filter circuit 14 by the host 15 that A/D capture card 13 inputs computer Relationship between support mechanism 1 and the vibration information of reflector net 2.

In the present embodiment, the first high speed camera 901 and the second high speed camera 902 are all made of FASTCAM SA2 model High speed camera is manufactured by Photron company；It can shoot 1 under 2048 × 2048 pixel of full frame, 080 frame/second, full HD (1920 × 1080 pixels) 2,000 frames/second；Camera lens uses Nikon AF 24mm f/2.8D camera lens, focal range 24mm, and angular field of view exists 35mm format is 84 degree, and NikonDX format is 61 degree, and interface mode is USB interface；First fluid head 906 and second is hydraulic Holder 907 uses Fu Mantu company model for 500 series MVH500A models, and material is aluminium alloy, can load-bearing 5kg；Using fixation Hydraulic damping is equipped with hydraulic compartment on horizontal and pitch axis, it is ensured that the first high speed camera 901 and the second high speed camera 902 gliding smoothing is accurate, and pedestal has the easy-to-use attachment device of a 3/8 Inches Thread interface, can be used to and the first sliding block 904, the second sliding block 905 connects, and Quick-mounting board connects high speed camera with 3/8 inch of interface with 1/4 inch, and fluid head is supported Panorama rotation, pitch angle are -70 degree to+90 degree；Guide rail 903 uses the mating guide rail of the fluid head, and material is metal, length For 1m, fixed bottom outlet size is 3/8 Inches Thread interface；First sliding block 904 and the second sliding block 905 are with damping positioning knob； Cubic support 10 is respectively 2800mm by three kinds of sizes, and the aluminum profile of 2500mm, 2610mm assemble, profile sectional dimension For 60 × 60mm, each profile junction has angle bar to be connected and fixed, and the pedestal of cubic support 10 is T-type foot, is bolted； Acceleration transducer 11 selects kistler company model for the voltage-type acceleration transducer of 8762A5, and normal sensibility is 1000mv/g, measurement frequency range are 0.5-6000Hz, and measurement direction is three axis；Fixed plate 12 is one piece 300 × The axis of symmetry of the stainless steel plate of 1000mm, short side hasBolt hole several；A/D capture card 13 selects multichannel PLC- 818HD model is produced by Taiwan Advantech company；Filter circuit 14 uses the circuit of autonomous Design；Computer selects I500- 7255 models, manufacturer are Founder Technology Group Corp..

As shown in FIG. 1 to FIG. 7, the present embodiment additionally provides a kind of Astromesh deployable reflector method for detecting vibration, the party Method is realized based on above-mentioned apparatus, comprising the following steps:

Step 1: signal generator 7 provides the sine wave signal of certain frequency and amplitude, in the effect of power amplifier 8 The lower driving voltage by voltage amplification to a certain extent, so that vibration excitor 6 be driven to control Astromesh deployable reflector vibration；

Step 2: connecting the power supply of LED index point, several LED index points are pasted on reflector net 2, adjust every group pair The pitch angle and level angle of two high speed cameras of mesh vision system 9 and two high speeds of every group of binocular vision system 9 The horizontal position of camera, it is ensured that all index points high speed camera vision-based detection within sweep of the eye；

Step 3: two high speed cameras to every group of binocular vision system 9 carry out stereo calibration, space coordinates are established, Coordinate system transformation matches the index point initial coordinate in two high speed camera visuals field, the coordinate of unified two groups of binocular vision systems 9 System；

Step 4: the high speed camera of two groups of binocular vision systems 9 is with certain frequency collection Astromesh deployable reflector Vibrational image inputs the host 15 of computer, and day can be opened up by obtaining annular truss according to vibration informations such as the vibration displacements of index point The reflector net curvature information of line, the image information for integrating the high speed camera of two groups of binocular vision systems 9 carry out image reconstruction and spelling It connects, and is shown on the display of computer 16；

Step 5: continuous acquisition data and reconstruction image, realize the vibration dynamic detection to reflector net 2, mode frequency is obtained The metamorphosis of rate and damping ratio data and reflector net 2；

Step 6: acceleration transducer 11 detects the vibration signal of the supporting mechanism 1 of Astromesh deployable reflector, successively It is analyzed by the host 15 that filter circuit 14, A/D capture card 13 input computer, comparative analysis supporting mechanism 1 and reflector net 2 Relationship between vibration information.

In conclusion the utility model, by the way of this external drive of vibratory drive mechanism, driving annular truss can It opens up antenna and generates vibration, be easy to produce biggish exciting force, and simultaneously can to annular truss using vision and acceleration transducer Exhibition antenna is detected, and vision-based detection has very high flexibility, and acceleration transducer can detecte signal and handle in time, is led to It crosses and is combined with each other the advantage of two kinds of detection modes, keep testing result more accurate.

The above, only the utility model patent preferred embodiment, but the protection scope of the utility model patent is simultaneously Not limited to this, anyone skilled in the art is in the range disclosed in the utility model patent, according to this Technical solution and its utility model design of utility model patent are subject to equivalent substitution or change, belong to the utility model patent Protection scope.

Claims (9)

1. Astromesh deployable reflector vibration detection device, it is characterised in that: including Astromesh deployable reflector, vibratory drive machine Structure and vibration detection mechanism, the vibratory drive mechanism is connect with Astromesh deployable reflector, for driving annular truss that can open up Antenna generates vibration, and the vibration detection mechanism includes two groups of binocular vision systems, cubic support, multiple acceleration transducers And processing equipment, two groups of binocular vision systems are symmetricly set in cubic support, can open up day for detecting annular truss The index point region on line surface, the multiple acceleration transducer are arranged on Astromesh deployable reflector, and along annular truss It is uniformly distributed around Deployable antenna, the processing equipment connects with two groups of binocular vision systems, multiple acceleration transducers respectively It connects.

2. Astromesh deployable reflector vibration detection device according to claim 1, it is characterised in that: the annular truss Deployable antenna includes supporting mechanism and reflector net, and the reflector net is arranged on supporting mechanism, and reflects net surface equipped with multiple Index point, the multiple acceleration transducer setting are uniformly distributed on supporting mechanism, and around supporting mechanism.

3. Astromesh deployable reflector vibration detection device according to claim 2, it is characterised in that: the supporting mechanism For polyhedral structure, there are multiple sides, top and bottom are regular polygon, and each side has two ribs, every rib packet Two vertical support rods and two axle sleeves are included, described two axle sleeves are connect with the both ends of two vertical support rods respectively, and every perpendicular Support bars are equipped with abutment sleeve and sliding sleeve, pass through rigid rod between the abutment sleeve and sliding sleeve of adjacent two ribs The connecting pin of connection, the rigid rod and abutment sleeve, sliding sleeve is hinged end.

4. Astromesh deployable reflector vibration detection device according to claim 2 or 3, it is characterised in that: the reflection Index point on net surface is LED index point, and the LED index point includes the first LED index point and the 2nd LED index point, institute The first LED index point is stated according to the rounded distribution of shape of reflector net, central symmetry of the 2nd LED index point along reflector net The distribution of line equidistant line.

5. Astromesh deployable reflector vibration detection device according to claim 1, it is characterised in that: every group of binocular vision System includes two high speed cameras, a guide rail, two sliding blocks and two fluid heads, and described two sliding blocks, which are slidably arranged in, leads On rail, two high speed cameras, two sliding blocks and two fluid heads are to correspond, and every high speed camera is arranged right On the fluid head answered, each fluid head is fixed on corresponding sliding block；The guide rail of two groups of binocular vision systems is symmetrically fixed In cubic support.

6. Astromesh deployable reflector vibration detection device according to claim 5, it is characterised in that: two groups of binocular visions The guide rail of system is symmetrically fixed in cubic support by fixed plate.

7. Astromesh deployable reflector vibration detection device according to claim 1, it is characterised in that: the vibratory drive Mechanism includes vibration excitor and signal processing module, and the vibration excitor is connect with Astromesh deployable reflector, the signal processing mould Block is connect with vibration excitor.

8. Astromesh deployable reflector vibration detection device according to claim 7, it is characterised in that: the signal processing Module includes signal generator and power amplifier, and the signal generator, power amplifier and vibration excitor are sequentially connected.

9. Astromesh deployable reflector vibration detection device according to claim 1, it is characterised in that: the processing equipment Including computer, A/D capture card and filter circuit, the computer is connect with two groups of binocular vision systems respectively, and is successively led to A/D capture card, filter circuit is crossed to connect with multiple acceleration transducers respectively.