CN108999820A - Linkage control system and method for flexible wall of wind tunnel - Google Patents
Linkage control system and method for flexible wall of wind tunnel Download PDFInfo
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- CN108999820A CN108999820A CN201810977991.7A CN201810977991A CN108999820A CN 108999820 A CN108999820 A CN 108999820A CN 201810977991 A CN201810977991 A CN 201810977991A CN 108999820 A CN108999820 A CN 108999820A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000009471 action Effects 0.000 claims description 7
- ZOMSMJKLGFBRBS-UHFFFAOYSA-N bentazone Chemical compound C1=CC=C2NS(=O)(=O)N(C(C)C)C(=O)C2=C1 ZOMSMJKLGFBRBS-UHFFFAOYSA-N 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011022 operating instruction Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention belongs to the technical field of wind tunnels, and discloses a wind tunnel flexible wall linkage control system and method. The two-position three-way electromagnetic valves are respectively arranged on the oil paths of the rod cavity and the rodless cavity of the 1# oil cylinder and are connected between the three-position four-way electromagnetic reversing valve and the one-way throttle speed regulating valve on each oil path. The invention not only solves the debugging problem, eliminates the phenomenon of card identification, improves the system operation condition, but also effectively improves the safety and reliability of the operation of key equipment, simultaneously the system function is further perfected, the flexible wall can carry out follow-up control while carrying out linkage control, the two controls are organically combined, different requirements under various working conditions such as wind tunnel tests, equipment maintenance and overhaul and the like can be met, in addition, the linkage coordination control system design and successful application have certain reference significance for the scheme design of similar working conditions in the future.
Description
Technical field
The invention belongs to Wind Tunnel Technique field more particularly to a kind of soft wall coordinated control system of wind-tunnel and methods.
Background technique
Currently, the prior art commonly used in the trade is such that wind-tunnel, be can artificially generated and control air-flow, flown with simulating
The flowing of row device or object ambient gas, and air-flow can be measured to a kind of pipe-like of the effect of object and observation physical phenomenon
Experimental facilities, it is to carry out that aerodynamic experiment is the most frequently used, most effective tool.Wind-tunnel is mainly by hole body, drive system and survey
Amount control system composition, the formal cause type of wind tunnel of each section and it is different.The soft adaptive wind-tunnel of wall is to eliminate wind tunnel wall interference to open up
New way, abandoned it is huge stay room and auxiliary extract system, avoid the influence of ventilating wall jet stream and noise to mainstream, can
Further increase flow field quality.The soft adaptive wind-tunnel of wall has good with other advanced experimental technique such as cryonetic wind tunnels and magnetic suspension balance
Good harmony, therefore be expected to become the following effective aerodynamic experiment means.Certain wind tunnel nozzle section is during debugging, soft wall
Entrance chute occurs not blocking during being in molding, returning to zero, and Ka not cause to issue abnormal sound at soft wall entrance chute, and change soft wall
Overall load distribution, deteriorates the operating condition of other nodes, if longtime running, may damage entrance structural member.Based on current
Structure type, can only guarantee in the case where designing M number (M4.25), adagio type face just in rotational segment tangential direction, other type faces without
Method guarantees, and the operation of soft wall uses multi-point interlinked control, and the coordination of each node speed of service is pre- in advance by each branch throttle valve
It sets, it can not card phenomenon be inevitable according to the matching and coordination of different shaped face demand real-time perfoming speed, therefore not.Class before
Like the soft wall-shaped face debugging of wind-tunnel of structural principle, generally on the basis of designing M number type face, each node speed of service is matched, then
To take into account remaining type face as far as possible as principle, each node speed of service is finely adjusted, speed adjustment is no longer carried out after final optimization pass.
In conclusion problem of the existing technology is:
(1) in the soft wall coordinated control system of existing wind-tunnel, there is not servo-actuated consideration, control only considers linkage, single to save
Point operating condition is easy to be ignored, and often results in equipment card resistance and abrasion, seriously affects the normal work of flexible jet pipe.
(2) in the soft wall coordinated control system of existing wind-tunnel, soft wall entrance chute occurs other during being in molding, returning to zero
Card Ka not cause to issue abnormal sound at soft wall entrance chute, and change soft wall overall load distribution, deteriorate the operation work of other nodes
Condition may damage entrance structural member if longtime running.
Solve the difficulty and meaning of above-mentioned technical problem:
Eliminate card resistance phenomenon, it is necessary to assure it is tangent with soft siding herein always that 1# hydraulic cylinder controls turning block.By
It is complex in different operating conditions, it is big to eliminate card resistance phenomenon difficulty by debugging the branch throttle valve, time-consuming and it is difficult to ensure that
Effect.To solve jamming failure, key technical problem is how to make turning block that soft siding be followed to act always.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of soft wall coordinated control system of wind-tunnel and methods.
The coordinated control system the invention is realized in this way a kind of soft wall of wind-tunnel links, the soft wall linkage of wind-tunnel are coordinated
Set-up of control system has:
First two-position three way magnetic valve and the second two-position three way magnetic valve；
Two two-position three way magnetic valves are arranged on 1# cylinder rod chamber and rodless cavity oil circuit, and are both connected to each
Between three-position four-way electromagnetic directional valve and one-way throttle valve on oil circuit.
Another object of the present invention is to provide a kind of wind-tunnel for realizing the soft wall linkage coordinated control system of the wind-tunnel is soft
Wall linkage coordination control method, the soft wall linkage coordination control method of wind-tunnel include:
It installs two two-position three way magnetic valves additional on node branch road, makes 1#Hydraulic cylinder forms and returns to zero process in flexible jet pipe
Middle rod chamber and rodless cavity are connected to oil return box, work out electromagnet action sequence according to forming, returning to zero and locking working condition requirement
Table, process control solenoid valve strictly work by electromagnet action sequence list.During soft wall is formed/is returned to zero, 1#It is hydraulic
Cylinder not output power, rotational segment is 2#~18#It is servo-actuated rotation under hydraulic cylinder coordination, effectively slows down card resistance phenomenon；Soft wall-shaped face
When locking, 1#Hydraulic cylinder and 2#~18#Hydraulic cylinder is the same, can carry out high pressure locking with whole and keep adagio type face；When 1#It is hydraulic
When cylinder is not required to servo-actuated, without changing hydraulic system and hole body structure, only modifying program can be realized (restorability is strong).
The hydraulic dynamic of the soft wall linkage coordination control method of the wind-tunnel is realized another object of the present invention is to provide a kind of
Force control system.
In conclusion advantages of the present invention and good effect are as follows: existing inter-linked controlling method can only guarantee in design horse
Flexible jet pipe works normally under conspicuous several operating conditions, and different degrees of not card can occur under other operating conditions, and this method is with adaptive
Ying Xing can be well adapted for various operating conditions, and not card phenomenon will not occur.The present invention not only solves debugging problem, eliminates not
Card phenomenon improves system conditions, and effectively improves the safety and reliability of key equipment operation, simultaneity factor function
It can be further improved, soft wall can carry out servo antrol while linkage control, and two kinds of controls organically combine, can be with
Meet the different demands under the various operating conditions such as wind tunnel test, plant maintenance maintenance.
Detailed description of the invention
Fig. 1 is the soft wall linkage coordinated control system structural schematic diagram of wind-tunnel provided in an embodiment of the present invention；
Fig. 2 is soft wall construction schematic diagram provided in an embodiment of the present invention；
In figure: 1, the first three-position four-way electromagnetic directional valve；2, the second three-position four-way electromagnetic directional valve；3, fixed integrated package；
4, the first two-position three way magnetic valve；5, the second two-position three way magnetic valve；6, first throttle speed governing valve；7, the second throttle grverning valve；
8, check valve；9,1# hydraulic cylinder；10,18# hydraulic cylinder.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Present invention seek to address that not having servo-actuated consideration in the existing soft wall coordinated control system of wind-tunnel, control only considers
Linkage is coordinated, damages the problem of entrance structural member.
Application principle of the invention is explained in detail with reference to the accompanying drawing.
As depicted in figs. 1 and 2, the soft wall coordinated control system of wind-tunnel provided in an embodiment of the present invention includes: the one or three four
Electric change valve 1, the second three-position four-way electromagnetic directional valve 2, fixed integrated package 3, the first two-position three way magnetic valve the 4, the 2nd 2
Position-3-way solenoid valve 5, first throttle speed governing valve 6, the second throttle grverning valve 7, check valve 8,1# hydraulic cylinder 9,18# hydraulic cylinder 10.
First three-position four-way electromagnetic directional valve 1 connects the one or two by conduit with the second three-position four-way electromagnetic directional valve 2
Three-way magnetic valve 4 and the second two-position three way magnetic valve 5, the first solenoid directional control valve 4 connect check valve and first throttle by conduit
Speed governing valve 6, the second solenoid directional control valve 5 are connect by conduit with the second throttle grverning valve 7, check valve, 6 and of first throttle speed governing valve
Second throttle grverning valve 7 is connect by conduit with 1# hydraulic cylinder 9, the first three-position four-way electromagnetic directional valve 1 and the second 3-position 4-way
Solenoid directional control valve 2 connects throttle grverning valve and check valve by conduit, and throttle grverning valve and check valve are hydraulic by conduit and 1#
Cylinder is connected to 18# hydraulic cylinder 10.
The soft wall linkage coordination control method of wind-tunnel provided in an embodiment of the present invention the following steps are included:
The present invention is in soft wall hydraulic control system, and using the operational mode of " low pressure molding, high pressure are locked ", oil sources includes
2 sets of pump groups, wherein 1#Fuel feeding when low-pressure machine pump group is soft wall low pressure molding, system pressure 6MPa, 2#High-pressure unit pump group is soft wall
Hydraulic high-pressure locks fuel feeding, system pressure 21Mpa, and pressure oil passes through 2 solenoid directional control valve parallel connections respectively and feeds to 1#~18#It is hydraulic
Cylinder, 18 group node hydraulic cylinder speeds are matched by the valve regulation of branch throttle grverning.Valve group is arranged in 1# node branch, specific to install
Position is between collecting pipe and 1# oil cylinder throttle grverning valve.1# oil cylinder hose is removed in construction first, fixed integrated in designated position
Block installs a tubular type check valve on main oil return line to adjust back pressure, improves system stability, the electricity integrated on integrated package
Magnetic reversal valve is by soft wall control cabinet DO channel wiring (channel DO is existing, need to only install 4 relays additional), after above-mentioned work is ready
Reconnect 1# cylinder pipe.After to be done, program, such as following table are modified by the corresponding electromagnet action sequence list of each functional status
It is shown, and debugged one by one by schematic diagram.
| Functional status | Molding is servo-actuated | It returns to zero servo-actuated | High pressure locking | Do not allow |
| DT1 | 1 | 0 | 0 | 1 |
| DT2 | 0 | 1 | 0 | 1 |
All devices installation is in place, after checking that confirmation is errorless, starts hydraulic system, carries out circulation flushing, guarantee in oil liquid
After cleannes reach requirement, linkage debugging is then carried out.First with the linkage of M1.0 type face, verify in soft wall action process, 1# liquid
Cylinder pressure output power situation and servo-actuated effect: when soft wall is formed/is returned to zero 1# hydraulic cylinder under 2#~18# hydraulic cylinder coordination with
Turn is dynamic, and card phenomenon does not completely eliminate, and when soft wall-shaped face is locked, 1# hydraulic cylinder can carry out height as 2#~18# hydraulic cylinder
Pressure locking keeps adagio type face with whole.Then above-mentioned test is carried out with the tetra- debugging type faces M2.0, M3.0, M4.25, M4.5 respectively
Card, card phenomenon can not eliminated, and application effect is good, develop index and all realize.
Soft wall system operating instruction provided in an embodiment of the present invention are as follows:
Oil cylinder drives adagio movement, and oil cylinder is equipped with position sensor and monitors oil cylinder real time position, has a positioning on oil cylinder
Bar follows oil cylinder to move up and down, and there are location nut and zero-bit nut, locating rod top to location nut or zero-bit spiral shell in locating rod both ends
Mother, the strength by nut are withstood, oil cylinder, that is, stop motion.Respectively there are two limit switches for location nut and zero-bit nut, pass through sight
Oil cylinder locating rod is examined either with or without limit switch is encountered to judge oil cylinder either with or without top in place.
The tension of adagio oil cylinder be all by 1# oil sources fuel feeding, according to the pump start and stop of design 1# oil sources by local control manually, or
The long-range Central Control Room control of person.Soft wall touch screen high pressure can be carried out to 1# oil sources or low pressure is requested, and it is ready that 1# oil sources feeds back low pressure
Or high pressure ready signal.
It controls program and uses SCOUT Software Development Platform, carry out programming using ST language.The operating condition of each oil cylinder is fed back
To operating system, system changes the mode of communicating of two-position three way magnetic valve, Jin Ershi by controlling the on-off of electromagnetic relay
Now servo-actuated or linkage function.
It is debugging stage concrete operations process below:
1, lower wall linkage picture --- zero-bit instruction button, upper wall lower wall can be clicked on upper wall touch screen, click
(zero-bit instruction button is related to motor linkage, only the motor when upper wall or lower wall zero-bit nut limit switch all trigger
Just allow to link, otherwise may cause location nut and block to motor nocuousness, but limit switch is difficult to accomplish entirely during debugging
Portion triggers, will not be dangerous under low-pressure state, therefore can first press zero-bit instruction).
2, local operation 1# oil sources, starts low-lift pump, and oil pressure is transferred to low pressure (6MPa).
3, soft wall touch screen links, and picture --- oil cylinder controls, it is seen that low pressure ready light is bright, clicks low pressure and returns to zero, oil
Cylinder, which returns to zero to make to return to zero direction reversal valve and open, (to be guaranteed that oil cylinder and location nut do not fix, has gap location nut could be allowed to transport
Row).
4, it is clicked after oil cylinder zero-bit limit switch is all on board and stops making reversal valve to get to cut-off position.
5, selection target jet pipe number selects the jet pipe number of corresponding Mach number, and at this moment the target value of location nut can change brush
Newly.
6, selection motor is enabled, and whether the enabled indicator light for observing each motor on picture is all lighted, and enables whole point
Bright to click motor operation, location nut can judge automatically traffic direction, be automatically stopped to target position (if there is individual
Location nut alarm, which can be out of service, even if motor ann reset, after Failure elimination this motor linkage its will not
It reruns, but other motors that do not alarm can be run, faulty motor can be in the isolated operation again of single action interface).
7, after location nut is all on board, low pressure molding is clicked, reversal valve forming direction is opened, and oil cylinder is transported to forming direction
Row.
8, oil cylinder molding limit switch is clicked after being all on board stops making reversal valve to get to cut-off position.
9, start high-pressure pump in 1# oil sources, oil pressure is transferred to high pressure (21MPa)
10, soft wall touch sees that high pressure ready light is bright, clicks high pressure locking, and reversal valve forming direction is opened, oil cylinder
High pressure withstands location nut.
11, oil pressure is dropped into low pressure after the test, low pressure returns to zero, and oil cylinder returns to zero-bit.
Structure of the invention is further described combined with specific embodiments below.
Process block of material uses 35# forging, JB4726-2000, III grade of qualification.Blank is visited by magnetic powder and ultrasonic wave
Wound executes standard JB/T4730-2005, I grade of qualification.In all processing flow channels of integrated package, especially Kong Yukong runs through infall,
Burr carefully is removed, the flatness of valve sealing face reaches 0.01/100mm, integrated package plating hard chromium on surface.Integrated package is made in processing
After the completion of making, be surface-treated etc., assembly and adjustment and function test are carried out, transports field conduct transformation after the completion of debugging to.
After the completion of wind-tunnel soft wall linkage coordinated control system retrofit work, by debugging comprehensively, expectation index is fully achieved,
It has been come into operation that, equipment normal operation, application effect is good.This retrofit work not only solves debugging problem, eliminates
Not card phenomenon improves system conditions, and effectively improves the safety and reliability of key equipment operation, simultaneity factor
Function is further improved, and soft wall can carry out servo antrol while linkage control, and two kinds of controls organically combine, can
To meet the different demands under the various operating conditions such as wind tunnel test, plant maintenance maintenance.The coordinated control system in addition, the soft wall of wind-tunnel links
System design and successful application, to from now on similar to the conceptual design of operating condition with certain reference, the crucial weight such as especially soft wall
Point device is the core component of construction of wind tunnel, and state performance directly affects flow field quality, and once breaks down, and maintenance is difficult
Degree is very big, thus high to the safety of equipment operation, stability requirement, when multi-point interlinked control mode is limited in peculiar structure
It when the lower hidden danger in the presence of operation, can be designed with reference to this modification scheme, it is ensured that equipment safety stable operation, strong improve are equipped
Test support ability.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (4)
- The coordinated control system 1. a kind of soft wall of wind-tunnel links, which is characterized in that the soft wall linkage coordinated control system of wind-tunnel is set It is equipped with:First two-position three way magnetic valve and the second two-position three way magnetic valve；Two two-position three way magnetic valves are arranged on 1# cylinder rod chamber and rodless cavity oil circuit, and are both connected to each oil circuit On three-position four-way electromagnetic directional valve and one-way throttle valve between.
- The coordinated control system 2. the soft wall of wind-tunnel as described in claim 1 links, which is characterized in that the first two-position three way electricity Magnet valve connects the first one-way throttle valve by conduit, and the second two-position three way magnetic valve passes through conduit and the second one-way throttle tune Fast valve connection, and the oil outlet phase of the oil inlet of one of two-position three way magnetic valve and another two-position three way magnetic valve Even.
- 3. a kind of wind-tunnel soft wall linkage coordinated control side for realizing the soft wall linkage coordinated control system of wind-tunnel described in claim 1 Method, which is characterized in that the soft wall linkage coordination control method of wind-tunnel includes:It installs two two-position three way magnetic valves additional on node branch road, makes 1#Hydraulic cylinder has during flexible jet pipe is formed and returned to zero Rod cavity and rodless cavity are connected to oil return box, work out electromagnet action sequence list, journey according to forming, returning to zero and locking working condition requirement Sequence control solenoid valve strictly works by electromagnet action sequence list.During soft wall is formed or is returned to zero, 1#Hydraulic cylinder is not Output power, rotational segment is 2#~18#It is servo-actuated rotation under hydraulic cylinder coordination, effectively slows down card resistance phenomenon；Soft wall-shaped face locking When, 1#Hydraulic cylinder and 2#~18#Hydraulic cylinder is the same, carries out high pressure locking with whole and keeps adagio type face；When 1#Hydraulic cylinder be not required to When dynamic, without changing hydraulic system and hole body structure, only modifying program be can be realized.
- 4. a kind of hydraulic power control system for realizing the soft wall linkage coordination control method of wind-tunnel described in claim 3.
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| CN201810977991.7A CN108999820A (en) | 2018-08-27 | 2018-08-27 | Linkage control system and method for flexible wall of wind tunnel |
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| CN201810977991.7A CN108999820A (en) | 2018-08-27 | 2018-08-27 | Linkage control system and method for flexible wall of wind tunnel |
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| CN111237276A (en) * | 2020-01-17 | 2020-06-05 | 哈尔滨鼓润生物技术有限公司 | Integrated gas circuit control method and device and storage medium |
| CN112067227A (en) * | 2020-07-30 | 2020-12-11 | 中国航天空气动力技术研究院 | Automobile environment wind tunnel idle speed simulation control system |
| CN112483495A (en) * | 2020-12-09 | 2021-03-12 | 中国空气动力研究与发展中心高速空气动力研究所 | Synchronous motor based multi-cylinder synchronous open-loop control system and control method |
| CN113566953A (en) * | 2021-09-23 | 2021-10-29 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Online monitoring method for flexible-wall spray pipe |
| CN114414198A (en) * | 2022-03-28 | 2022-04-29 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Driving device for large wind tunnel flexible wall spray pipe |
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| CN112483495A (en) * | 2020-12-09 | 2021-03-12 | 中国空气动力研究与发展中心高速空气动力研究所 | Synchronous motor based multi-cylinder synchronous open-loop control system and control method |
| CN113566953A (en) * | 2021-09-23 | 2021-10-29 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Online monitoring method for flexible-wall spray pipe |
| CN114414198A (en) * | 2022-03-28 | 2022-04-29 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Driving device for large wind tunnel flexible wall spray pipe |
| CN114414198B (en) * | 2022-03-28 | 2022-05-27 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Driving device for large wind tunnel flexible wall spray pipe |
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