CN104101493B - A kind of hoop truss formula deployable antenna expansion link reliability test and method - Google Patents
A kind of hoop truss formula deployable antenna expansion link reliability test and method Download PDFInfo
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- CN104101493B CN104101493B CN201410334813.4A CN201410334813A CN104101493B CN 104101493 B CN104101493 B CN 104101493B CN 201410334813 A CN201410334813 A CN 201410334813A CN 104101493 B CN104101493 B CN 104101493B
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- expansion link
- limit switch
- bar
- deployable antenna
- hoop truss
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Abstract
The present invention relates to a kind of hoop truss formula deployable antenna expansion link reliability test device and method.This device includes: fixed pulley, limit switch, expansion link, variable speed electric motors, particularly and strain gauge；Described expansion link is by upper end cover, sliding inner sleeve bar, bottom end cover and sliding outer cover bar composition；Described sliding outer cover bar is fixed, and sliding inner sleeve bar can slide in sliding outer cover bar；Described fixed pulley is connected with strain gauge；Described strain gauge is connected with computing unit, the data on strain gauge is read in computing unit；The described job step being applied to measure the experimental provision of hoop truss expansion link reliability is to be carried out system control by control system.By the way, it is provided that the expansion link reliability test device of a kind of hoop truss formula deployable antenna, this apparatus structure is simple, reasonable in design, has filled up the blank of the expansion link reliability determination of hoop truss formula deployable antenna.
Description
Technical field
The present invention relates to a kind of reliability test, especially relate to a kind of hoop truss formula deployable antenna expansion link reliability test device and method.
Background technology
Can spaceborne deployable antenna safely and conveniently be sent into space, successfully launch and be locked in duty in space, normally work, indicate the success or failure of satellite launch task the most to a great extent in the phase of being on active service in-orbit.Once antenna system lost efficacy under a certain stage or a certain state, cause satellite cannot normally control with work, it is meant that for satellite launch put into huge human and material resources and financial resources all will pair one of deficient.
After spaceborne deployable antenna is sent to space safely, if normally to work at space, it is necessary first to guarantee that this antenna can launch smoothly.Hoop truss formula deployable antenna launch during due to various reasons, it is possible that the inefficacy of multi-form, such as rope management failure mechanisms, kinetic moment deficiency lost efficacy, toward raw fracture failure, expansion link slip inefficacy etc., any inefficacy all can cause antenna normally to launch, thus also result in this antenna and cannot normally work.Therefore, it is necessary to for different failure modes, study its reliability, in addition to expansion link, the reliability at remaining position can be by calculating or investigation obtain, and the current research of the reliability of expansion link is the most fewer.
Summary of the invention
For the problems referred to above, the invention provides a kind of expansion link reliability test device and the method for hoop truss formula deployable antenna, in order to obtained the reliability of hoop truss formula deployable antenna by this experimental provision.
The technical solution adopted in the present invention is: provides the expansion link reliability test device of a kind of hoop truss formula deployable antenna, it is characterized in that: including: fixed pulley group, upper end limit switch, expansion link, lower end limit switch, DC stepper motor and digital display type pull and push dynamometer；Described expansion link is made up of upper end cover, sliding inner sleeve bar, bottom end cover and sliding outer cover bar；Described sliding inner sleeve bar and sliding outer cover bar are hollow thin-wall pipe；Described sliding outer cover bar is fixed between switch base and lower switch base；Sliding inner sleeve bar can slide in sliding outer cover bar；Described upper end cover and bottom end cover are attached separately to the top and bottom of sliding inner sleeve bar；Described upper end cover is connected with steel wire rope；Described steel wire rope is connected with DC stepper motor by fixed pulley group；Described fixed pulley group is fixed with digital display type pull and push dynamometer；Described upper end limit switch and lower end limit switch are separately fixed on switch base and lower switch base；When measuring hoop truss expansion link reliability, control system it is controlled；Digital display type pull and push dynamometer is connected with computing unit, the data in digital display type pull and push dynamometer is read in computing unit.
Described expansion link should be identical with the expansion link used in hoop truss formula deployable antenna.
The move distance of described interior loop bar should with in hoop truss deployable antenna in loop bar launch during move distance identical.
Described limit switch is condenser type limit switch.
Described fixing device is used for fixing limit switch and outer loop bar.
Described control system is used for receiving the signal that the sensor of limit switch is occurred, it is judged that control motor afterwards.
Described control system is used for receiving the sensor signal of limit switch, judges sensor signal, controls motor work.
Described computing unit uses computer or plc controller or embedded system.
A kind of expansion link failtests method of hoop truss formula deployable antenna, at least comprises the steps:
1) sliding inner sleeve bar is positioned on the limit switch of lower end, and by enumerator zero setting；
2) starting power supply, control system collects the information that lower end limit switch is occurred；
3) control DC stepper motor according to length of telescopic bar and antenna duration of run to start to rotate forward,
4) digital display type pull and push dynamometer starts determination data；
5) collect the data message in digital display type pull and push dynamometer by computing unit and store；
6), when sliding inner sleeve bar moves to upper end limit-switch positions, control system collects the information that upper end limit switch is occurred；
7) control DC stepper motor to stop rotating forward and start to rotate with the velocity reversal that rotates forward of three times；
8) computing unit continues to collect the data message in digital display type pull and push dynamometer；Until being re-moved to lower end limit-switch positions, so it is repeated；
9) times of exercise is added up by enumerator, until proceeding to test desired times, halt system.
The invention has the beneficial effects as follows: providing the expansion link reliability test device of a kind of hoop truss formula deployable antenna, it is reasonable in design, simple in construction, and diagonal bar is easily changed.The interior loop bar of different bore and outer loop bar according to actual needs, can be combined, thus by testing, the reliability of the diagonal bar slip of the spaceborne deployable antenna of hoop truss formula of different bores is measured.Fill up the blank of the expansion link reliability determination of hoop truss formula deployable antenna.
Accompanying drawing explanation
Fig. 1 is the experimental provision of the present invention a kind of hoop truss formula deployable antenna expansion link reliability；
Fig. 2 is one group of expansion link of a kind of hoop truss formula deployable antenna；
Fig. 3 is that control system controls motor workflow diagram.
In accompanying drawing: 1, fixed pulley group；2, upper switch base；3, upper end limit switch；4, expansion link；4.1, upper end cover；4.2, sliding inner sleeve bar；4.3, bottom end cover；4.4, sliding outer cover pipe；5, lower end limit switch；6, fixing device；7, control system；8, enumerator；9, DC stepper motor；10, steel wire rope；11, digital display type pull and push dynamometer；12, computing unit；13, lower switch base.
Detailed description of the invention
Below in conjunction with the accompanying drawings presently preferred embodiments of the present invention is described in detail, so that advantages and features of the invention can be easier to be readily appreciated by one skilled in the art, thus protection scope of the present invention is made apparent clear and definite defining.
Referring to accompanying drawing 1, Fig. 2 and Fig. 3, the embodiment of the present invention includes:
A kind of hoop truss formula deployable antenna expansion link reliability test device, including: fixed pulley group 1, upper limit position switch 3, expansion link 4, lower position switch 5, DC stepper motor 9 and digital display type pull and push dynamometer 11；Described expansion link 4 is made up of upper end cover 4.1, sliding inner sleeve bar 4.2, bottom end cover 4.3 and sliding outer cover bar 4.4；Described sliding inner sleeve bar 4.2 is hollow thin-wall pipe with sliding outer cover bar 4.4；Described sliding outer cover bar 4.4 is fixed between switch base 2 and lower switch base 13；Sliding inner sleeve bar 4.2 can slide in sliding outer cover bar 4.4；Described upper end cover 4.1 and bottom end cover 4.3 are attached separately to the top and bottom of sliding inner sleeve bar 4.2；Described upper end cover 4.1 is connected with steel wire rope 10；Described steel wire rope 10 is connected with DC stepper motor 9 by fixed pulley group 1；Described fixed pulley group 1 is fixed with digital display type pull and push dynamometer 11；Described upper end limit switch 3 and lower end limit switch 5 are separately fixed on switch base 2 and lower switch base 13；When measuring hoop truss expansion link 4 reliability, control system 7 it is controlled；Digital display type pull and push dynamometer 11 is connected with computing unit 12, the data in digital display type pull and push dynamometer 11 is read in computing unit 12.
A kind of expansion link failtests method of hoop truss formula deployable antenna, at least comprises the steps:
1) sliding inner sleeve bar 4.2 is positioned on lower end limit switch 5, and by digital display type pull and push dynamometer 11 and the whole zero setting of enumerator 8；
2) starting power supply, control system 7 collects the information that lower end limit switch 5 is occurred；
3) controlling DC stepper motor 9 to start to rotate forward with certain speed, this speed is mainly determined by length of telescopic bar and antenna duration of run；
4) digital display type pull and push dynamometer 11 starts determination data；
5) collect the data message in digital display type pull and push dynamometer 11 by computing unit 12 and store；
6), when sliding inner sleeve bar 4.2 moves to limit switch 3 position, upper end, control system 7 collects the information that upper end limit switch 3 is occurred；
7) control DC stepper motor 9 to stop rotating forward and start to rotate with the velocity reversal that rotates forward of three times；
8) computing unit 12 continues to collect the data message in digital display type pull and push dynamometer 11；Until being re-moved to lower end limit switch 5 position, so it is repeated；
9) times of exercise is added up by enumerator 8, until proceeding to test desired times, halt system.
Described expansion link 4 should be identical with the expansion link used in hoop truss formula deployable antenna.
The move distance of described interior loop bar 4.2 should with in hoop truss deployable antenna in loop bar launch during move distance identical.
Described limit switch is condenser type limit switch.
Described fixing device is used for fixing limit switch and outer loop bar.
Described control system is used for receiving the signal that the sensor of limit switch is occurred, it is judged that control motor afterwards.
Described control system 7 is used for receiving the sensor signal of limit switch, judges sensor signal, controls motor work.
Described computing unit 12 uses computer or plc controller or embedded system.
Described control system 7 uses plc controller.
Claims (7)
1. an expansion link reliability test device for hoop truss formula deployable antenna, is characterized in that: including: fixed pulley group (1), upper end limit switch (3), expansion link (4), lower end limit switch (5), DC stepper motor (9) and digital display type pull and push dynamometer (11)；Described expansion link (4) is made up of upper end cover (4.1), sliding inner sleeve bar (4.2), bottom end cover (4.3) and sliding outer cover bar (4.4)；Described sliding inner sleeve bar (4.2) and sliding outer cover bar (4.4) are hollow thin-wall pipe；Described sliding outer cover bar (4.4) is fixed between switch base (2) and lower switch base (13)；Sliding inner sleeve bar (4.2) can slide in sliding outer cover bar (4.4)；Described upper end cover (4.1) and bottom end cover (4.3) are attached separately to the top and bottom of sliding inner sleeve bar (4.2)；Described upper end cover (4.1) is connected with steel wire rope (10)；Described steel wire rope (10) is connected with DC stepper motor (9) by fixed pulley group (1)；Described fixed pulley group (1) is fixed with digital display type pull and push dynamometer (11)；Described upper end limit switch (3) and lower end limit switch (5) are separately fixed on switch base (2) and lower switch base (13)；When measuring expansion link (4) reliability, control system (7) it is controlled；Digital display type pull and push dynamometer (11) is connected with computing unit (12), the data in digital display type pull and push dynamometer (11) is read in computing unit (12).
2. according to the expansion link reliability test device of a kind of hoop truss formula deployable antenna described in claim 1, it is characterized in that: described expansion link (4) should be identical with the expansion link used in hoop truss formula deployable antenna.
3., according to the expansion link reliability test device of a kind of hoop truss formula deployable antenna described in claim 1, it is characterized in that: the move distance of described interior loop bar (4.2) should with in hoop truss deployable antenna in loop bar launch during move distance identical.
4. according to the expansion link reliability test device of a kind of hoop truss formula deployable antenna described in claim 1, it is characterized in that: described limit switch is condenser type limit switch.
5. according to the expansion link reliability test device of a kind of hoop truss formula deployable antenna described in claim 1, it is characterized in that: described control system is used for receiving the signal that the sensor of limit switch is occurred, it is judged that control motor afterwards.
6. according to the expansion link reliability test device of a kind of hoop truss formula deployable antenna described in claim 1, it is characterized in that: described computing unit (12) uses computer or plc controller or embedded system.
7. an expansion link failtests method for hoop truss formula deployable antenna, at least comprises the steps: 1) sliding inner sleeve bar (4.2) is positioned on lower end limit switch (5), and by enumerator (8) zero setting；2) starting power supply, control system (7) collects the information that lower end limit switch (5) is occurred；3) control DC stepper motor (9) according to length of telescopic bar and antenna duration of run to start to rotate forward, 4) digital display type pull and push dynamometer (11) beginning determination data；5) collect the data message in digital display type pull and push dynamometer (11) by computing unit (12) and store；6), when sliding inner sleeve bar (4.2) moves to upper end limit switch (3) position, control system (7) collects the information that upper end limit switch (3) is occurred；7) control DC stepper motor (9) to stop rotating forward and start to rotate with the velocity reversal that rotates forward of three times；8) computing unit (12) continues to collect the data message in digital display type pull and push dynamometer (11)；Until being re-moved to lower end limit switch (5) position, so it is repeated；9) times of exercise is added up by enumerator (8), until proceeding to test desired times, halt system.
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| CN201410334813.4A CN104101493B (en) | 2014-07-15 | 2014-07-15 | A kind of hoop truss formula deployable antenna expansion link reliability test and method |
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| CN104965939B (en) * | 2015-05-27 | 2019-05-14 | 西安电子科技大学 | A kind of hoop truss formula deployable antenna analysis method for reliability |
| CN106855467A (en) * | 2015-12-09 | 2017-06-16 | 中国科学院沈阳自动化研究所 | Extension means high/low temperature Mechanics Performance Testing device |
| CN108955497B (en) * | 2018-08-06 | 2020-05-01 | 中国一冶集团有限公司 | Device and method for inspecting through opening of secondary truss in space pipe truss |
| CN111855168B (en) * | 2020-06-11 | 2022-08-26 | 上海宇航***工程研究所 | Suspension type vertical expansion test device of planar array antenna |
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| US4228590A (en) * | 1979-03-16 | 1980-10-21 | Shinhichi Kimura | Leveling pole |
| US5734096A (en) * | 1997-04-14 | 1998-03-31 | Mcguigan; James D. | Swimming pool leak detecting device |
| CN1811373A (en) * | 2005-11-14 | 2006-08-02 | 上海申光高强度螺栓有限公司 | Engineering member tensil testing machine |
| CN201569529U (en) * | 2010-01-07 | 2010-09-01 | 重庆交通大学 | Pull rod tension measuring device for large building |
| CN203053684U (en) * | 2012-11-23 | 2013-07-10 | 贵州航天林泉电机有限公司 | Linear stretchable structure push/pull testing device |
| CN203479515U (en) * | 2013-10-10 | 2014-03-12 | 罗锦江 | Automatic telescoping test apparatus for telescopic antenna |
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