CN108287485B - Inflation method of multi-inflation loading test bed - Google Patents
Inflation method of multi-inflation loading test bed Download PDFInfo
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- CN108287485B CN108287485B CN201711265862.7A CN201711265862A CN108287485B CN 108287485 B CN108287485 B CN 108287485B CN 201711265862 A CN201711265862 A CN 201711265862A CN 108287485 B CN108287485 B CN 108287485B
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- inflation
- test bed
- loading test
- servo control
- series connection
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to an inflation method of a multi-inflation loading test bed. A special data transmission bus is additionally arranged on a servo control instruction input interface of the inflatable loading test bed, the input interface receives a servo control instruction given by a control system in real time, and the servo control instruction is placed on the special data transmission bus; meanwhile, a series connection interface of an inflation loading test bed is newly added and used for forwarding and receiving servo control signals; when the test bed is required to be used in series connection, the servo control signal input interface of the first air inflation platform is connected with a servo control command, the series connection interface outputs the command to the second air inflation platform through a special data transmission bus and a series connection line, the second air inflation platform is not externally connected with a servo control command signal line any longer, but the received data is placed on the special data transmission bus inside the second air inflation platform through the series connection interface to be used as a control command, and the series connection of the multi-air inflation loading test bed is realized.
Description
Technical Field
The invention relates to a circuit design technology, in particular to an air charging and discharging test of closed parts such as a fuselage, a cabin, an oil tank and the like in an airplane strength test.
Background
In the existing air tightness test of the airplane strength test and the air inflation and deflation test of a sealing part, a plurality of air inflation loading test benches are required to be configured for simultaneously inflating and deflating in order to improve the air inflation and deflation speed, the existing multi-air inflation bench inflation mode is shown in figure 1, a plurality of test channels are required to be configured in corresponding test loading control files, and each channel comprises an air pressure sensor input channel and a servo control output channel. Because the length, the impedance and the like of each servo control input and output signal line are different, the control instruction actually output by the control system to the inflation loading test bed is different, the error is smaller in the high-load holding stage of the test, the corresponding control instruction is smaller, the existence of the error can reduce the coordinated loading precision of each inflation test bed, even the control instruction on one inflation loading test bed is positive inflation, the control instruction on the other inflation loading test bed is negative deflation, and further the phenomenon of oscillation in the control process is caused.
Disclosure of Invention
Object of the Invention
The invention aims to design a series connection mode of a plurality of inflatable loading test beds, and guarantee the consistency when a servo control command output by test loading control equipment is output to the plurality of inflatable loading test beds.
Technical solution of the invention
The invention is realized by the following technical scheme: the method comprises the steps that a multi-inflation loading test bed is provided, and each inflation loading test bed is provided with a servo signal input interface, a data transmission bus and a serial input/output interface; the servo signal input interface is connected with the serial input/output interface through a data transmission bus; the servo signal input interface of the first inflation loading test bed is used for receiving a servo control instruction sent by loading equipment, the servo signal input interface from the second inflation loading test bed to the last inflation loading test bed is used for being connected with the serial input/output interface of the previous inflation loading test bed, and all the inflation loading test beds are connected in series;
when the servo signal input interface of the first inflation loading test bed receives the servo control instruction, the servo control instruction is sent to the serial input/output interface through the data transmission bus, and the instruction is output to the next inflation loading test bed through the serial input/output interface.
Positive effect
The serial connection mode has the following advantages:
●, the instructions of the multiple inflation loading test beds are consistent, the loading precision is improved, and the phenomenon that the inflation and deflation simultaneously act among the multiple inflation loading test beds is avoided;
● the number of the series connection inflatable loading test-beds can be expanded;
● the serial connection is not divided into primary and secondary, the sequence of the air charging platform can be adjusted arbitrarily;
● is flexible and convenient to install and simple to operate.
Drawings
FIG. 1 is a schematic view of an inflation mode of a conventional multi-inflatable table;
FIG. 2 is a schematic diagram of a tandem multiple air loading test bed.
Detailed Description
The invention is realized by the following technical scheme: the servo control instruction input interface of the inflation loading test bed adopts British 4-core sockets MS3102A-14S-2P (control signal sockets), a data transmission bus is newly added at the rear end of the interface to receive a servo control instruction given by a control system in real time, the instruction is placed on the data transmission bus in real time, and meanwhile, a 5-core socket MS3100A-16S-8P (inflation platform serial signal sockets) of a series connection interface of the inflation loading test bed is newly added for transmitting data on the bus.
Taking the two inflation loading test beds connected in series as an example, the inflation loading test bed A is externally connected with a servo control signal given by test loading control equipment, the servo control command is transmitted to the inflation loading test bed B intact through a bus and a series connection input/output interface, the inflation loading test bed B does not need to be connected with the servo control signal at the moment, but the signal obtained by the series connection interface is used as a control command, and the two inflation beds are connected in series. Meanwhile, the serial connection is not divided into a primary sequence, a secondary sequence and an inflation platform sequence, the number of the inflation platforms can be expanded, and only the serial connection line needs to be improved.
Claims (3)
1. An inflation method of a multi-inflation loading test bed is characterized in that each inflation loading test bed is provided with a servo signal input interface, a data transmission bus and a serial input/output interface; the servo signal input interface is connected with the serial input/output interface through a data transmission bus; the servo signal input interface of the first inflation loading test bed is used for receiving a servo control instruction, the servo signal input interface from the second inflation loading test bed to the last inflation loading test bed is used for being connected with the serial input/output interface of the previous inflation loading test bed, and all the inflation loading test beds are connected in series;
when the servo signal input interface of the first inflation loading test bed receives the servo control instruction, the servo control instruction is sent to the serial input/output interface through the data transmission bus, and the instruction is output to the next inflation loading test bed through the serial input/output interface.
2. The method of claim 1, further comprising the steps of: the servo signal input interface adopts an English 4-core socket MS 3102A-14S-2P.
3. The method of claim 1 or 2, wherein: the serial input and output interface adopts an English system 5-core socket MS 3100A-16S-8P.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711265862.7A CN108287485B (en) | 2017-12-04 | 2017-12-04 | Inflation method of multi-inflation loading test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711265862.7A CN108287485B (en) | 2017-12-04 | 2017-12-04 | Inflation method of multi-inflation loading test bed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108287485A CN108287485A (en) | 2018-07-17 |
| CN108287485B true CN108287485B (en) | 2020-10-20 |
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| CN201711265862.7A Active CN108287485B (en) | 2017-12-04 | 2017-12-04 | Inflation method of multi-inflation loading test bed |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080098210A (en) * | 2007-05-04 | 2008-11-07 | (주) 엔케이텍 | Apparatus for testing fuel injection for cng vehicles |
| CN101788372A (en) * | 2010-01-20 | 2010-07-28 | 台州环天机械有限公司 | Gas tightness detection device |
| CN102507209A (en) * | 2011-10-20 | 2012-06-20 | 重庆长安汽车股份有限公司 | Test stand for reliability of series-connection extended-range pure electric automobile power assembly |
| CN203858075U (en) * | 2013-11-19 | 2014-10-01 | 陕西汉德车桥有限公司 | Gas tightness detection device of charging-discharging axle wheel side |
| CN106153324A (en) * | 2016-07-28 | 2016-11-23 | 西安冠泰检测技术有限公司 | A kind of inflation fatigue test loading device |
-
2017
- 2017-12-04 CN CN201711265862.7A patent/CN108287485B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080098210A (en) * | 2007-05-04 | 2008-11-07 | (주) 엔케이텍 | Apparatus for testing fuel injection for cng vehicles |
| CN101788372A (en) * | 2010-01-20 | 2010-07-28 | 台州环天机械有限公司 | Gas tightness detection device |
| CN102507209A (en) * | 2011-10-20 | 2012-06-20 | 重庆长安汽车股份有限公司 | Test stand for reliability of series-connection extended-range pure electric automobile power assembly |
| CN203858075U (en) * | 2013-11-19 | 2014-10-01 | 陕西汉德车桥有限公司 | Gas tightness detection device of charging-discharging axle wheel side |
| CN106153324A (en) * | 2016-07-28 | 2016-11-23 | 西安冠泰检测技术有限公司 | A kind of inflation fatigue test loading device |
Non-Patent Citations (1)
| Title |
|---|
| "大容积飞机结构并接充压试验技术";高利娃 等;《工程与试验》;20160930;第3卷(第56期);79-82 * |
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| CN108287485A (en) | 2018-07-17 |
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