CN106706245A - Vibration-acceleration coupling environment test system used for spacecraft dynamic test - Google Patents
Vibration-acceleration coupling environment test system used for spacecraft dynamic test Download PDFInfo
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- CN106706245A CN106706245A CN201510416458.XA CN201510416458A CN106706245A CN 106706245 A CN106706245 A CN 106706245A CN 201510416458 A CN201510416458 A CN 201510416458A CN 106706245 A CN106706245 A CN 106706245A
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Abstract
The invention discloses a vibration-acceleration coupling environment test system used for a spacecraft dynamic test. The system comprises an acceleration environment test system and a vibration environment test system. The acceleration environment test system is used for providing constant linear acceleration environment stress through jib rotation and mainly comprises a base, a motor, a transmission system, a speed measurement device, a working jib, a current collecting ring and an electronic control system. The vibration environment test system is used for providing vibration excitation and mainly comprises an electromagnetic vibration table body, a forced air cooling system and an image photographing system. The electromagnetic vibration table body, the forced air cooling system and the image photographing system are fixed on a centrifuge jib through bolts. The environment test system has the advantages of being simple in structure and easy to control and can be used for providing the vibration-acceleration coupling dynamic test for the spaceflight product.
Description
Technical field
The invention belongs to spacecraft dynamics experimental technique field, in particular it relates to a kind of vibration-acceleration coupling ring
Border testing equipment.
Background technology
In national defense industry, Aerospace Products generally work in the Coupled Dynamic environment that vibration and linear acceleration are acted on simultaneously
In, in launching phase, when climbing, diving and spiraling, strategic missile is in powered phase and by again for aircraft for such as spacecraft
When entering section, its equipment and device are subject to the coupling of acceleration overload and engine luggine.But in current mechanical ring
Border experiment aspect, due to the missing of coupling test equipment, vibration test and the general timesharing of centrifugal test are independently carried out, respectively
Product is examined to vibration or the tolerance of linear acceleration individual event stress with centrifuge on a vibration table.This and engineering reality
The situation of middle vibration and linear acceleration coupling simultaneously has differences.Sub- (Sandia) National Laboratory in U.S. mulberry ground
Primary Study conclusion is it has been shown that the combined influence of acceleration overload environment and vibration environment and be not equal to the difference of each factor
Influence sum, product can expose and not found in individual event stress test under the comprehensive function of two or more environmental stresses
Problem, therefore the reliability of equipment under the influence of combinational environment can not be predicted with independent research technique.The He of American army mark 810
National military standard 150A is also explicitly pointed out：" combined environment test may can more represent reality than a series of continuous single tests
Border environmental effect.When these conditions are run into use environment, encouragement carries out combined environment test ".It is contemplated that, in boat
The new stage of empty space flight development, instrument and equipment will be more complicated and advanced, and the sensitiveness to environment will further enhance, many
Influence of the stress coupling action effect to product mission reliability will be highlighted further.
Additionally, Chinese patent CN201510412857.9 discloses one kind can be used under spacecraft dynamics apocarpy
Electromagnetic vibration generator system, it is mainly included by upper lid and cylindrical lower the cover external shell that constitutes of docking of tubular and setting
Exciting part in external shell, can vertically freely activity and bottom be provided with the moving-coil of longitudinal axis, moving-coil support,
Guiding parts, pressure air cooling duct；Wherein, moving-coil is made up of the cone body on top and the stop sleeve of bottom,
Moving-coil is overall to be coaxially disposed and is supported in moving-coil support with external shell, and the longitudinal axis both sides of moving-coil bottom are respectively arranged with
To limit the radial displacement of moving-coil, exciting part is fixed on the inwall of electromagnetic vibration generator system external shell around moving-coil to directive wheel
On, mainly including upper magnet exciting coil, lower magnet exciting coil and the part such as top crown, bottom crown, for supply constant voltage,
Under the exciting current effect of constant current, stationary magnetic field powerful enough is produced in the enclosure interior of shake table；Upper magnet exciting coil
It is arranged near the cone body of moving-coil, lower magnet exciting coil sets the stop sleeve bottom of moving-coil, upper magnet exciting coil top is viscous
It is connected to for producing the bottom crown being bonded with below the top crown of electromagnetic field and lower magnet exciting coil for producing electromagnetic field, upper pole
The chock against cone body side is arranged between plate and cone body, chock top is fixed on external shell top and sets
Turn down guider and with upper guider turn down and move up and down, with upper guider together to moving-coil
Cone body top carries out spacing, and extra inside the stop sleeve of moving-coil to install one group of DC coil additional, DC coil is produced
Additional balance direct current carries out the adjustment of moving-coil center under apocarpy.
In order to adapt to the growth requirement of space product mission reliability measurement, it is to avoid Aerospace Products are examined in process of the test
Core is insufficient, it is impossible to which abundant exposing product design and manufacturing defect, highly desirable development is a set of can be carried out vibrating-accelerating
The pilot system of degree coupling environmental test.
The content of the invention
Can carry out vibrating-acceleration coupling environment experiment simulator it is an object of the invention to provide one kind, be used for into
The vibration of row Ministry of Aerospace Industry subassembly product-acceleration coupling environmental simulation test.
The present invention is achieved through the following technical solutions：
A kind of vibration-acceleration coupling environmental test system, including：Acceleration environment pilot system and vibration environment test
System；Wherein, acceleration environment pilot system mainly includes support, motor, transmission system, speed measuring device, work
Pivoted arm, collecting ring, electric-control system；Support is mechanically anchored on cement flooring using screw, and motor is set on pedestal,
Motor casing is mechanically anchored on pedestal using screw, and the output of motor is transmitted through transmission system and drives vertical rotation
Turn main shaft rotation, the center of the pivoted arm that works coaxially is spirally connected fixed and rotates about with live spindle；Speed measuring device is by the electricity that tests the speed
Machine is connected by synchronous cog belt with motor, with the rotating speed of direct detection motor, and the rotating speed after detection is changed into
Electric signal output controls the actual speed with adjustment work pivoted arm to electric-control system；Work pivoted arm has appropriate rotation
Turn the mounting plane at radius and two ends, providing given constant line by the testpieces on the mounting plane for rotating to be two ends adds
Speed；Live spindle is provided with collecting ring (conducting slip ring) above work pivoted arm, for rotational structure sound part
Between conduct.Collecting ring is made up of inner and outer ring, and outer shroud steel bracket is spirally connected and is fixed on melt pit safety wall, prevent its with
Pivoted arm rotates together, and is connected with electric-control system by support extraction current supply line, and collecting ring inner ring is fixed on live spindle
On, it is connected with motor with live spindle synchronous rotary, and extraction wire.Vibration environment test system mainly includes electromagnetism
Shake table and camera system, it is characterised in that the mounting plane of work pivoted arm one end is provided with spacecraft dynamics centrifugation shape
The electromagnetic vibration generator system used under state, the mounting plane of the other end is used to install the counterweight with electromagnetic vibration generator system homogenous quantities；Electromagnetism
Shake table mainly includes the external shell being made up of upper lid and cylindrical lower the cover docking of tubular and is arranged on external shell
Internal exciting part, can vertically freely activity and bottom be provided with the moving-coil of longitudinal axis, moving-coil support, guiding parts,
Force air cooling duct；Camera system is arranged on testpieces nearby in vibration-acceleration coupling environmental test system
State during system work to testpieces carries out observation detection.
Wherein, electromagnetic vibration generator system have with Chinese patent CN201510412857.9 in electromagnetic vibration generator system identical structure,
Entire contents are incorporated herein in the way of being cited herein.
Wherein, motor drives the bevel-gear sett in Gearbox to be slowed down by yielding coupling, wherein auger
Gear is arranged in live spindle, and work pivoted arm is also secured in live spindle, drives work pivoted arm to rotate about.
Wherein, support is fixed on cement flooring by foot bolt, the benchmark mounting surface for providing centrifuge stage body, and
Resistance to tipping moment is provided to prevent from being toppled in operation process.
Preferably, work pivoted arm is welding rigid structure.
Preferably, being made on the mounting plane of work pivoted arm two ends has mounting hole, and equipped with scale, to determine the peace of testpieces
Dress radius.
Preferably, together with work pivoted arm and live spindle is rigidly attached by ring flange, to eliminate because pivoted arm is upper and lower
The constant acceleration change fluctuated and bring.
Wherein, force air cooling system that electric vibration table is connected with blower fan using elastic airduct, electricity is driven using blower fan
Forced Air Convection in dynamic shake table, cools down to electric vibration table.
Preferably, the mounting means of electromagnetic vibration generator system is to be fixedly connected along arm, and installation direction horizontally outward, makes electricity for moving-coil
Magnetic shake platform offer vibrational excitation direction it is parallel with the constant linear acceleration direction that centrifuge is provided, while making centrifuge work
When keep fixing with the relative position of shake table.
Preferably, the terminal plate of the blower fan of electromagnetic vibration generator system and electric-control system is fixed on work pivoted arm by being spirally connected, and to the greatest extent
Amount near live spindle, to reduce in process of the test suffered centrifugal force thereon.
Preferably, electromagnetic vibration generator system is fixed on work pivoted arm by being spirally connected, and suspension ring are provided with electromagnetic vibration generator system,
Realize the rapid-assembling/disassembling of shake table.
Preferably, whole vibration-acceleration coupling environmental test system is arranged in experiment melt pit, and use safety wall every
From.
The present invention has following beneficial effect：
(1) simple structure：A kind of vibration-acceleration coupling environmental test for spacecraft dynamics experiment of the invention
System is without excessively being transformed centrifuge and shake table, and shake table stage body is without shockproof suspension transposition, but passes through
A pair of L-type supports are fixed on pivoted arm.Connection between each part relies primarily on bolt connecting mode, and reliability is high, and convenient
Assembly and disassembly are changed.
(2) it is easily manipulated：A kind of vibration-acceleration coupling environmental test for spacecraft dynamics experiment of the invention
In system, centrifuge is separately controlled with shake table, can be then turned on shake table after centrifuge speed stabilization, it is easy to control
Damping is dynamic-the experiment magnitude of acceleration coupling test and time.
(3) vibration-acceleration coupling test environment can be provided：It is different from traditional mechanical test system, one kind of the invention
Vibration-acceleration coupling environmental test system for spacecraft dynamics experiment is that one kind can carry out vibrating-acceleration
Coupling environment experiment simulator, can be used for the tolerance for examining space product that environment is coupled to vibration-acceleration.
Brief description of the drawings
Fig. 1 is the front view that the vibration-acceleration for spacecraft dynamics experiment of the invention couples environmental test system.
Fig. 2 is the top view that the vibration-acceleration for spacecraft dynamics experiment of the invention couples environmental test system.
Wherein：1 support；2 motor；3 speed measuring devices；4 shaft couplings；5 reduction cases；6 live spindles；7
Work pivoted arm；8 collecting rings；9 counterweights；The patch panel of 10 electric-control systems；11 blower fans；12 electromagnetic vibration generator systems hang
Ring；13 electromagnetic vibration generator systems；14 steel brackets；15 melt pit safety walls；16 camera systems；17 pivoted arm mounting planes.
Fig. 3 is the decelerator that the vibration-acceleration for spacecraft dynamics experiment of the invention couples environmental test system
The section transmission schematic diagram of casing.
Wherein：21 cabinet shells；22 enhanced-type tapered roller bearings；23 bevel gear centering gear wheels；24 bevel gears
Centering little gear；25 enhanced-type tapered roller bearings；6 live spindles；27 enhanced-type tapered roller bearings；4 shaft couplings
Device.
Specific embodiment
Below in conjunction with accompanying drawing to a kind of vibration-acceleration coupling environmental test for spacecraft dynamics experiment of the invention
System is described in detail, the merely illustrative purpose of specific embodiment, it is no intended to limit the scope of the invention.
Reference picture 1-2, Fig. 1-2 respectively illustrate a kind of vibration-acceleration for spacecraft dynamics experiment of the invention
Couple the front view and top view of environmental test system.Show with reference to the accompanying drawings and could be aware that, vibration-acceleration of the invention
Coupling environmental test system includes support 1；Motor 2；Speed measuring device 3；Shaft coupling 4；Reduction case 5；Rotation
Main shaft 6；Work pivoted arm 7；Collecting ring 8；Counterweight 9；The patch panel 10 of electric-control system；Blower fan 11；Electric and magnetic oscillation
Platform suspension ring 12；Electromagnetic vibration generator system 13；Steel bracket 14；Melt pit safety wall 15；Camera system 16；Pivoted arm mounting plane
17.Wherein, the vibration-acceleration for spacecraft dynamics experiment of the invention couples the reduction-gear housing of environmental test system
The structural representation of body is as shown in figure 3, shaft coupling 4 is fixed on the main shaft of bevel gear centering bevel pinion 24 by being spirally connected
On, bevel gear wheel 23 is connected with live spindle 26, and two bevel gear shafts pass through enhanced-type tapered roller bearing 22,25
It is fixed in reduction-gear housing body case 21 with 27.When motor drives shaft coupling 4 to operate, reduction case transmission
Component can realize the deceleration and steering for rotating, so as to drive live spindle 6 to rotate.
In one embodiment, a kind of vibration-acceleration coupling environment examination for spacecraft dynamics experiment of the invention
The support 1 of check system is arranged in Special test melt pit by foot bolt, and motor 2 and reduction case 5 are by being spirally connected
It is fixed on support 1.Speed measuring device 3 is fixed on the shell of motor 2, and speed measuring motor axle leads to motor arbor
Cross synchronous cog belt connection.Shaft coupling 4 is fixed on the axle of motor 2 by the one end that is spirally connected, and the other end is fixed on decelerator
In casing 5 on the small coning gear shaft of bevel gear pair.When motor 2 rotates, rotation is delivered to by shaft coupling 4 is subtracted
In fast device casing 5, and live spindle 6 is driven to rotate by the transmission component in reduction case 5, while drive is tested the speed
Motor rotation in device 3, because the gearratio of each transmission mechanism, it is known that by the rotating speed of motor in speed measuring device 3 just
The rotating speed of live spindle 6 can be calculated.Work pivoted arm 7 is fixed in live spindle 6 by being spirally connected, and with live spindle
6 rotate together with.Collecting ring 8 is made up of inner and outer ring, and outer shroud steel bracket 14 is spirally connected and is fixed on melt pit safety wall 15,
Prevent it from being rotated with pivoted arm, and be connected with electric-control system by support extraction current supply line, collecting ring inner ring is fixed on
In live spindle 6, it is connected with motor 2 with the synchronous rotary of live spindle 6, and extraction wire.The wiring of electric-control system
Panel 10, blower fan 11, pivoted arm mounting plane 15 are spirally connected are fixed on work pivoted arm 7 respectively.The peace of work pivoted arm one end
Dress plane 17 is designed with a pair of L-type supports, for the installation that is spirally connected, Motionless electromagnetic shake table 13 and camera system 16, when
When motor 2 starts, electromagnetic vibration generator system 13 is with the work synchronous rotary of pivoted arm 7, so as to be made by centrifugation linear acceleration
With.The camera of camera system 16 just to the objective table of electromagnetic vibration generator system 13, for the situation in the work rotation of pivoted arm 7
The situation of lower observation tested products.Boss is carried in the L-type support of mounting plane 17 simultaneously, with the shell of electromagnetic vibration generator system 13
Baltimore groove on body coordinates, positioning when being installed for electromagnetic vibration generator system 13.It is bolted with the housing of electromagnetic vibration generator system 13
Suspension ring 12, lifting when being dismounted for electromagnetic vibration generator system.The air outlet of electromagnetic vibration generator system 13 is soft by aluminium foil with blower fan 11
Pipe is connected, and blower fan 11 is used for the air blast cooling of electromagnetic vibration generator system 13 after starting.On the mounting plane 17 of the pivoted arm other end
Counterweight 9 is bolted, to the weight of trim electromagnetic vibration generator system 13, what main shaft 6 was subject in elimination rotary course inclines
Cover torque.
A kind of development principle of vibration-acceleration coupling environmental test system for spacecraft dynamics experiment of the invention is such as
Under：
When centrifuge starts, because electromagnetic vibration generator system is rigidly connected with centrifuge pivoted arm, therefore electromagnetic vibration generator system is with centrifugal basket
Arm is rotated together with, and after centrifuge speed stabilization, electromagnetic vibration generator system and the tested products for carrying thereon are subject to constant line to accelerate
Degree is acted on.Electromagnetic vibration generator system is now then turned on, for tested products provide extra oscillating load excitation, then tested products are to be in
In vibration-acceleration coupling test environment.
Acceleration environment pilot system of the invention and vibration environment test system are simultaneously operable, can carry out sinusoidal vibration-
Acceleration coupling test, random vibration-acceleration coupling test and impact-acceleration coupling test.Vibration level in experiment
Can individually be specified with time, acceleration magnitude and time.
Wherein, vibration-acceleration coupling environment test capability：Maximum constant linear acceleration 20g；Maximum vibration exciting is pushed away
Power >=1000N (under sinusoidal vibration, random vibration condition), >=2000N (under the conditions of impact)；Continuous work at full capacity
Time is better than 30min.
Collecting ring includes 500V, 5A360 ring, and 40A10 rings, 10A8 rings, ± 10V24 rings meet most space flight
Parts product powers up test requirements document.
Although specific embodiment of the invention is described in detail and is illustrated above, it should be noted that we can
Made various changes and modifications with to above-mentioned implementation method, but these are without departure from of the invention spiritual and appended claim institute
The scope of record.
Claims (10)
1. a kind of vibration-acceleration couples environmental test system, including：Acceleration environment pilot system and vibration environment are tried
Check system；Wherein, acceleration environment pilot system mainly includes support, motor, transmission system, speed measuring device, work
Make pivoted arm, collecting ring, electric-control system；Support is mechanically anchored on cement flooring, and motor, motor are set on pedestal
Output transmitted through transmission system and drive vertical live spindle to rotate, center and the live spindle of the pivoted arm that works are coaxially solid
Determine and rotate about；Speed measuring device is connected by synchronous cog belt by speed measuring motor with motor, and electricity is driven with direct detection
The rotating speed of machine, and the rotating speed after detection is changed into electric signal output to electric-control system, and then control and adjustment work pivoted arm
Actual speed；Work pivoted arm has the mounting plane at appropriate radius of turn and two ends, is put down by the installation for rotating to be two ends
Testpieces on face provides given constant linear acceleration；Live spindle is provided with collecting ring and (leads above work pivoted arm
Electric slip ring), for conducting between rotational structure sound part.Collecting ring is made up of inner and outer ring, outer shroud steel bracket spiral shell
Connect and be fixed on melt pit safety wall, prevent it from being rotated with pivoted arm, and current supply line and electric-control system are drawn by support
It is connected, collecting ring inner ring is fixed in live spindle, is connected with motor with live spindle synchronous rotary, and extraction wire.
Vibration environment test system mainly includes electromagnetic vibration generator system and camera system, it is characterised in that the installation of work pivoted arm one end
Plane is provided with the electromagnetic vibration generator system used under spacecraft dynamics apocarpy, and the mounting plane of the other end is used to be installed on
The counterweight of electromagnetic vibration generator system homogenous quantities；Electromagnetic vibration generator system mainly includes being made up of upper lid and cylindrical lower the cover docking of tubular
External shell and be arranged in external shell exciting part, can vertically freely activity and bottom is provided with longitudinal axis
Moving-coil, moving-coil support, guiding parts, force air cooling duct；Camera system be arranged on testpieces nearby for
State when vibration-acceleration coupling environmental test system works to testpieces carries out observation detection.
2. vibration-acceleration as claimed in claim 1 couples environmental test system, wherein, motor is joined by elasticity
Axle device drives the bevel-gear sett in Gearbox to be slowed down, and wherein bevel gear wheel is arranged in live spindle, work
Pivoted arm is also secured in live spindle, drives work pivoted arm to rotate about.
3. vibration-acceleration as claimed in claim 1 couples environmental test system, wherein, support is solid by foot bolt
It is scheduled on cement flooring, for providing the benchmark mounting surface of centrifuge stage body, and provides resistance to tipping moment to prevent in operating
During topple.
4. the vibration as described in claim any one of 1-3-acceleration couples environmental test system, wherein, work pivoted arm
It is welding rigid structure.
5. vibration-acceleration as claimed in claim 4 couples environmental test system, wherein, work pivoted arm two ends are installed
Being made in plane has mounting hole, and equipped with scale, to determine the installation radius of testpieces.
6. the vibration as described in claim any one of 1-3-acceleration couples environmental test system, wherein, work pivoted arm
Together with being rigidly attached by ring flange with live spindle, to eliminate the constant acceleration brought because pivoted arm fluctuates up and down
Change.
7. vibration-acceleration as claimed in claim 1 couples environmental test system, wherein, force air cooling system
Electric vibration table is connected with blower fan using elastic airduct, it is right using Forced Air Convection in blower fan driving electric shake table
Electric vibration table is cooled down.
8. vibration-acceleration as claimed in claim 1 couples environmental test system, wherein, the installation of electromagnetic vibration generator system
Mode is to be fixedly connected along arm, installation direction be moving-coil horizontally outward, make the vibrational excitation direction that electromagnetic vibration platform is provided with from
The constant linear acceleration direction that scheming is provided is parallel, while keeping solid with the relative position of shake table when centrifuge is worked
It is fixed.
9. vibration-acceleration as claimed in claim 1 couples environmental test system, wherein, the blower fan of electromagnetic vibration generator system
Terminal plate with electric-control system is fixed on work pivoted arm by being spirally connected, and close proximity to live spindle, is tested with reducing
Suffered centrifugal force thereon in journey.
10. vibration-acceleration as claimed in claim 1 couples environmental test system, and electromagnetic vibration generator system is solid by being spirally connected
It is scheduled on work pivoted arm, and suspension ring is provided with electromagnetic vibration generator system, realizes the rapid-assembling/disassembling of shake table.
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| CN108872626A (en) * | 2018-08-21 | 2018-11-23 | 福州大学 | Electromagnetic rivet driver speed measuring device and speed-measuring method |
| CN110702347A (en) * | 2019-11-12 | 2020-01-17 | 苏州苏试试验集团股份有限公司 | Vibration centrifugal composite test equipment and control method thereof |
| CN110887631A (en) * | 2019-12-04 | 2020-03-17 | 中国直升机设计研究所 | Hydraulic acceleration test bed |
| CN111152937A (en) * | 2020-01-20 | 2020-05-15 | 中国工程物理研究院总体工程研究所 | Centering device and centering method for vibrating table moving coil in centrifugal field |
| CN111570105A (en) * | 2020-05-13 | 2020-08-25 | 西安交通大学 | Variable-mass power centrifuge and experimental method |
| CN112781818A (en) * | 2021-04-09 | 2021-05-11 | 禾美(浙江)汽车股份有限公司 | New energy automobile DCDC converter parameter detection system |
| CN112896565A (en) * | 2021-02-19 | 2021-06-04 | 中国工程物理研究院总体工程研究所 | Vibration centrifugal composite environment simulation rotating arm system |
| CN114061873A (en) * | 2021-09-29 | 2022-02-18 | 太原市华纳方盛科技有限公司 | Vibration and impact experimental device used in overload environment |
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| CN108872626A (en) * | 2018-08-21 | 2018-11-23 | 福州大学 | Electromagnetic rivet driver speed measuring device and speed-measuring method |
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| CN111152937B (en) * | 2020-01-20 | 2024-04-19 | 中国工程物理研究院总体工程研究所 | Centering device and centering method for vibrating table moving coil in centrifugal field |
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| CN112896565A (en) * | 2021-02-19 | 2021-06-04 | 中国工程物理研究院总体工程研究所 | Vibration centrifugal composite environment simulation rotating arm system |
| CN112781818A (en) * | 2021-04-09 | 2021-05-11 | 禾美(浙江)汽车股份有限公司 | New energy automobile DCDC converter parameter detection system |
| CN114061873A (en) * | 2021-09-29 | 2022-02-18 | 太原市华纳方盛科技有限公司 | Vibration and impact experimental device used in overload environment |
| CN114061873B (en) * | 2021-09-29 | 2024-01-16 | 太原市华纳方盛科技有限公司 | Vibration and impact experimental device for overload environment |
| CN117990325A (en) * | 2024-04-07 | 2024-05-07 | 苏州东菱振动试验仪器有限公司 | Centrifugal vibration test system |
| CN117990325B (en) * | 2024-04-07 | 2024-06-04 | 苏州东菱振动试验仪器有限公司 | Centrifugal vibration test system |
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| CN106706245B (en) | 2019-08-06 |
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