KR101661150B1 - The Flexible Nozzle Safety System for Wind Tunnel And Controlling Method Thereof - Google Patents

The Flexible Nozzle Safety System for Wind Tunnel And Controlling Method Thereof Download PDF

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Publication number
KR101661150B1
KR101661150B1 KR1020150103260A KR20150103260A KR101661150B1 KR 101661150 B1 KR101661150 B1 KR 101661150B1 KR 1020150103260 A KR1020150103260 A KR 1020150103260A KR 20150103260 A KR20150103260 A KR 20150103260A KR 101661150 B1 KR101661150 B1 KR 101661150B1
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KR
South Korea
Prior art keywords
variable nozzle
variable
position sensor
nozzle plate
limit switch
Prior art date
Application number
KR1020150103260A
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Korean (ko)
Inventor
고지훈
신성범
김희중
김영준
Original Assignee
국방과학연구소
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Priority to KR1020150103260A priority Critical patent/KR101661150B1/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
    • G01M9/02—Wind tunnels
    • G01M9/04—Details
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • 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
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • H01H13/18—Operating parts, e.g. push-button adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)

Abstract

According to the present invention, a flexible nozzle protection device for a wind tunnel comprises: a position sensor which detects a displacement of a flexible nozzle plate; a limit switch which prevents the flexible nozzle plate from being excessively bent based on the detected displacement of the flexible nozzle plate; and a main control panel programmable logic controller (PLC) which transmits a control command to the limit switch if the displacement detected from the position sensor is greater than or equal to a specific reference value, thereby minimizing an error of a flexible nozzle shape.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wind tunnel variable nozzle protection device,

The present invention relates to a variable-nozzle-type variable-nozzle protection apparatus for real-time measurement of the condition of a variable-size nozzle in generating a variable nozzle plate shape according to a mach number in a triple speed wind tunnel test.

Conventional three-speed variable speed wind tunnel variable nozzles are equipped with three types of limit switches, each of which includes overstress, stop-nut, and lock-nut. And the logic related to the hardware signal / operation by the direct connection with the relay is constituted so that the error occurs due to environmental factors due to vibration, temperature, and humidity.

Also, in the case of the overstress limit switch (overstress L / S), only when the nozzle plate experiences a certain bending abnormality, it can not be detected when the minute curvature of the nozzle shape changes. Therefore, there is a problem in that it can not be confirmed in real time whether or not it is set to an exact curvature value corresponding to a Mach number.

An object of the present invention is to real-time measure the state of the wind tunnel variable nozzle and to keep the error of the variable nozzle shape to a minimum in generating the shape of the variable nozzle plate according to the mach number.

According to an aspect of the present invention, there is provided a wind tunnel variable nozzle protection apparatus including a position sensor for detecting a displacement of a variable nozzle plate, a position sensor for detecting excessive displacement of the variable nozzle plate, And a main control unit PLC for transmitting a control command to the limit switch when the displacement detected from the position sensor is not less than a specific reference value.

According to one embodiment, the position sensor and the limit switch include a plurality of position sensors and the limit switches, and the plurality of position sensors and the limit switches are connected to each of a plurality of stations connected to the variable nozzle plate Can be connected.

According to an embodiment, the plurality of position sensors may transmit a position sensor signal including a first voltage signal corresponding to a corresponding position of each station and a second voltage signal corresponding to a target position of each station, Lt; / RTI > stations.

According to one embodiment, the limit switch includes overstress, stop-nut, and lock-nut switches, and the main control unit PLC controls the overstress, The control signals can be sent to the stop-nut and lock-nut switches.

According to an embodiment, there is provided a variable nozzle cylinder hydraulic system configured to measure a hydraulic pressure of a cylinder associated with movement (Contour / Release) of the variable nozzle plate and to adjust a hydraulic pressure for moving the variable nozzle plate, And a variable nozzle jack screw drive system configured to transmit data or receive control commands.

According to one embodiment, the main control unit PLC receives data relating to the displacement of the variable nozzle plate from each of the plurality of position sensors, and controls the variable nozzle cylinder hydraulic system and the variable nozzle jack screw drive system, A control command related to the displacement of the nozzle plate can be transmitted.

According to one embodiment, the limit switch includes a plurality of limit switches installed at upper and lower portions of the variable nozzle, and the position sensor may include a plurality of position sensors installed at upper and lower portions of the variable nozzle.

According to the present invention, real-time shape monitoring and safety can be ensured for the variable nozzle plate, thereby contributing to improvement in reliability of wind tunnel test data.

1 is a block diagram of a wind tunnel variable nozzle protection apparatus according to an embodiment of the present invention.
2 and 3 are block diagrams showing a detailed configuration of a limit switch and a position sensor according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, It will be possible. While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and are herein described in detail. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

A wind-tunable nozzle protection device for collecting and processing curvature data of a plate in real time and alarming and interrupting the same in order to minimize an error of the variable nozzle shape in a wind-tunneling nozzle protection device according to the present invention and its control The method will be described in more detail with reference to the drawings.

1 is a block diagram of a wind tunnel variable nozzle protection apparatus according to an embodiment of the present invention. The wind tunnel variable nozzle protection apparatus 100 includes a limit switch 101, a position sensor 102, and a main control panel PLC (Programmable Logic Controller) 103. The wind tunneling nozzle protection apparatus 100 may further include a main controller HMI 104, a variable nozzle cylinder hydraulic system 105, and a variable nozzle jack screw driving system 106.

The limit switch 101 corresponds to a switch for controlling the nozzle plate (not shown) constituting the variable nozzle so as not to move beyond a specific position. Specifically, the limit switch 101 is a switch that prevents excessive bending of the nozzle plate based on the detected displacement of the nozzle plate corresponding to each Mach number.

For example, it can be determined whether or not the curvature error of the nozzle plate is equal to or greater than ± 2.16 mm. When the curvature error of the nozzle plate is equal to or greater than ± 2.16 mm, the main control panel PLC 103 causes the variable nozzle jack screw drive system 106 to stop driving the nozzle jack screw, and the variable nozzle cylinder hydraulic system 105 May be controlled to stop the cylinder hydraulic system.

The position sensor 102 corresponds to a sensor for detecting the current position of the variable nozzle plate so as to control the variable nozzle plate so as not to move beyond a specific position. According to an embodiment of the present invention, the current position and the specific position may be a curvature error of the variable nozzle plate. That is, the position sensor 102 prevents displacement detection and excessive bending of the variable nozzle plate corresponding to each Mach number. For example, it is determined whether or not the drive control is performed according to the curvature error of the variable nozzle plate, It can be judged whether or not the curvature error of the nozzle plate is equal to or larger than ± 2.16 mm.

The main control panel PLC 103 is connected to the limit switch 101 and the position sensor 102 to analyze the position data of the variable nozzles collected from the position sensor 102, The limit switch 101 is used to monitor the stress so that the position of the variable nozzle is not moved beyond a specific position.

The main controller HMI 104 is connected to the main control panel PLC 103 to display the status of the variable nozzles in real time through Ethernet communication with the main control panel PLC 103 and to output data related to the status of the variable nozzles .

The variable nozzle cylinder hydraulic system 105 measures the hydraulic pressure of the cylinder related to the contour / release of the variable nozzle and transmits the measured hydraulic pressure to the main control panel PLC 103, And receives the control command from the controller 103 to adjust the hydraulic pressure for moving the variable nozzle. That is, the variable nozzle cylinder hydraulic system 105 is a hydraulic system for driving a cylinder for contouring / releasing the variable nozzle plate.

The variable nozzle jack screw drive system 106 may transmit data (e.g., Mach number) associated with driving the variable nozzle to the main control panel PLC 103 or from the main control panel PLC 103, And controls the driving of the variable nozzle. That is, the variable nozzle jack screw drive system 106 is a sub motor system for driving a nozzle jack screw to produce a desired Mach number.

2 and 3 are block diagrams showing a detailed configuration of a limit switch and a position sensor according to an embodiment of the present invention.

The limit switch 101 includes a variable nozzle upper power supply 201, a variable nozzle lower power supply 202, a variable nozzle upper limit switch 203, a variable nozzle lower limit switch 204, an upper local box 205, And a lower local box 206.

The variable nozzle upper power supply 201 and the variable nozzle lower power supply 202 supply the necessary DC power to the respective switches of the variable nozzle upper limit switch 203 and the variable nozzle lower limit switch 204 do.

The variable-nozzle upper limit switch 203 and the variable-nozzle lower limit switch 204 are installed in the upper and lower stations so that the respective switches are in an overstress state, a stop-nut state, and a lock- lock-nut limit switches. For example, the number of the upper limit switch 203 and the lower limit switch 204 may be 28.

On the other hand, the over-stress, stop-nut and lock-nut limit switches are connected to the sensors associated with the respective limit switch. Here, the overstress sensor detects the bending state of the nozzle plate to prevent excessive bending of the nozzle plate, and the stop-nut sensor drives a nozzle jack screw to set a mechanical position corresponding to each Mach number And then detects an accurate driving state. Further, the lock-nut sensor detects the driving state so that the lock-nut limit switch fixes the nozzle jack screw so as not to be changed from external force.

As described above, the functions of the sensors of the stop-nut sensor, the lock-nut sensor, the over-stress limit sensor, and the position sensor 102 are shown in Table 1 below.

sensor function Stop-nuts After driving the nozzle jack screw to set the mechanical position corresponding to each Mach number, the correct driving condition is detected Rock-Nut
Fix the nozzle jack screw so that it does not change from external force Overstress
Prevent excessive bending of nozzle plate Position sensor
Displacement detection and excessive bending of the nozzle plate corresponding to each Mach number

On the other hand, when the output from the oversteer limit sensor is ON, both the nozzle jack screw and the cylinder hydraulic system are stopped. When the output is OFF, the nozzle jack screw is operable and the cylinder hydraulic system operates.

When the output from the lock-nut sensor is ON, both the nozzle jack screw and the cylinder hydraulic system are stopped. When the output is OFF, the nozzle jack screw is actuatable and the cylinder hydraulic system operates.

When the output from the stop-and-nut sensor is ON, the nozzle jack screw is stopped and the operation of the cylinder hydraulic system is irrelevant. When the output is OFF, the nozzle jack screw can be driven and the operation of the cylinder hydraulic system It is irrelevant.

As described above, the variable-nozzle-cylinder hydraulic system 105 and the variable-nozzle-type hydraulic pressure system according to sensor-specific signals of the stop-nut sensor, the lock-nut sensor and the overstress limit sensor and the position sensor 102, The protection operation of the jack screw drive system 106 is shown in Table 2 below.

sensor condition Protection operation Stop-nuts ON (Engage) Nozzle Jack Screw-driven stop, cylinder Hydraulic system None OFF (Disengage) Nozzle Jack screw drive, cylinder hydraulic system independent Rock-Nut
ON (Engage) Nozzle jack screw drive stop, cylinder hydraulic system stop OFF (Disengage) Nozzle Jack screw drive, cylinder hydraulic system operation Overstress
ON (Engage) Nozzle jack screw drive stop, cylinder hydraulic system stop OFF (Disengage) Nozzle Jack screw drive, cylinder hydraulic system operation Position sensor
Curvature error
± 2.16mm or more Nozzle jack screw drive stop, cylinder hydraulic system stop Curvature error
Less than ± 2.16mm Nozzle Jack screw drive, cylinder hydraulic system operation

The upper local box 205 and the lower local box 206 are configured to collect signals output from the upper limit switch 203 and the lower limit switch 204. The upper local box 205 and the lower local box 206 are connected to a D / I (I / O) terminal (not shown) for collecting on / off (disengage) Digital Input module. For example, a total of 32, 8, 2, and 2, for each overstress, stop-nut, and lock-nut limit switch for each station, Since there are 28 limit switches, 336 channels are required.

The position sensor 102 includes a variable nozzle upper power supply 301, a variable nozzle lower power supply 302, a variable nozzle upper position sensor 303, a variable nozzle lower position sensor 304, an upper local box 305, And a lower local box 306.

The variable nozzle upper power supply 301 and the variable nozzle lower power supply 302 supply necessary DC power to the respective position sensors of the variable nozzle upper position sensor 303 and the variable nozzle lower position sensor 304 do.

The upper position sensor 303 and the lower position sensor 304 are installed at upper and lower stations, respectively, to detect the position of each station installed at the upper and lower sides of the variable nozzle. The position sensor signals of the respective stations from the upper position sensor 303 and the lower position sensor 304 may include a first voltage signal corresponding to a corresponding position of the respective stations and a second voltage signal corresponding to a target position of the respective stations And a second voltage signal.

Here, if the curvature error of the variable nozzle plate detected through the upper position sensor 303 and the lower position sensor 304 is greater than a specific value, the main control unit PLC 103 stops the nozzle jack screw and the cylinder hydraulic pressure system And sends control commands to the variable nozzle cylinder hydraulic system 105 and the variable nozzle jack screw drive system 106. For example, the curvature error may be 2.16 mm.

The upper local box 305 and the lower local box 306 collect voltages and output voltages applied to the upper position sensor 303 and the lower position sensor 304, respectively. For example, the upper local box 305 and the lower local box 306 may be analog / digital (A / D) conversion modules.

The upper local box 305 and the lower local box 306 are connected to the upper position sensor 303 and the lower position sensor 304. The upper local box 305 and the lower local box 306 are connected to the upper position sensor 303 and the lower position sensor 304, A total of 56 channels may be included.

Accordingly, the present invention enables real time shape monitoring and safety assurance of the variable nozzle plate, thereby contributing to improvement in reliability of wind tunnel test data.

According to a software implementation, not only the procedures and functions described herein, but also each component may be implemented as a separate software module. Each of the software modules may perform one or more of the functions and operations described herein. Software code can be implemented in a software application written in a suitable programming language. The software code is stored in the memory of the control device and can be executed by a controller or a processor.

The present invention can be modified, changed or improved in various forms within the scope of the present invention and the scope of the present invention without being limited to the embodiments disclosed herein.

Claims (7)

A wind tunnel variable nozzle protection device comprising:
A position sensor for detecting a displacement of the variable nozzle plate;
A limit switch configured to prevent excessive bending of the variable nozzle plate based on a detected displacement of the variable nozzle plate;
A main control unit (PLC) that receives the limit switch state and transmits a corresponding control command to the variable nozzle system if the displacement detected by the position sensor is not less than a specific reference value;
A variable nozzle cylinder hydraulic system configured to measure a hydraulic pressure of a cylinder associated with movement (Contour / Release) of the variable nozzle plate and to adjust a hydraulic pressure for moving the variable nozzle plate; And
And a variable nozzle jack screw drive system configured to transmit data related to driving the variable nozzle plate or to receive a control command,
The variable nozzle cylinder hydraulic system and the variable nozzle jack screw drive system are all stopped if the curvature error from the position sensor is above a certain value and the variable nozzle jack screw drive system is drivable if the curvature error is below a certain value Wherein the variable nozzle cylinder hydraulic system operates. The method according to claim 1,
Wherein the position sensor and the limit switch comprise a plurality of position sensors and the limit switches,
Wherein the plurality of position sensors and the limit switches are connected to each of a plurality of stations connected to the variable nozzle plate. 3. The method of claim 2,
Wherein the plurality of position sensors receive a position sensor signal including a first voltage signal corresponding to a corresponding position of each station and a second voltage signal corresponding to a target position of each station from the plurality of stations , Wind tunnel variable nozzle protection device. The method according to claim 1,
The limit switch includes an overstress, a stop-nut and a lock-nut switch,
The main control unit PLC receives the overstress, stop-nut and lock-nut switch states,
The over-stress, stop-nuts, and lock-nuts switches are associated with overstress, stop-nuts, and lock-
Wherein when the output from the over-stress sensor is ON, the variable nozzle-cylinder hydraulic system and the variable-nozzle-jack-screw drive system are both stopped, and when the output is OFF, the variable- Nozzle cylinder The hydraulic system operates on a wind tunnel variable nozzle protection device. delete 3. The method of claim 2,
The main control unit (PLC)
Receiving data associated with displacement of the variable nozzle plate from each of the plurality of position sensors,
And transmits a control command related to displacement of the variable nozzle plate to the variable nozzle cylinder hydraulic system and the variable nozzle jack screw drive system. The method according to claim 1,
The limit switch includes a plurality of limit switches provided at upper and lower portions of the variable nozzle,
Wherein the position sensor comprises a plurality of position sensors mounted on top and bottom of the variable nozzle.
KR1020150103260A 2015-07-21 2015-07-21 The Flexible Nozzle Safety System for Wind Tunnel And Controlling Method Thereof KR101661150B1 (en)

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KR1020150103260A KR101661150B1 (en) 2015-07-21 2015-07-21 The Flexible Nozzle Safety System for Wind Tunnel And Controlling Method Thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107389293A (en) * 2017-07-12 2017-11-24 中国人民解放军63926部队 A kind of method for detecting Wind Tunnel Contraction inner mold face wrap-around error
CN113049212A (en) * 2021-03-29 2021-06-29 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 Hydraulic driving device applied to molding of profile of wind tunnel spray pipe

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6332337A (en) * 1986-07-25 1988-02-12 Mitsubishi Heavy Ind Ltd Supersonic wind channel with flexible nozzle
JPH04310834A (en) * 1991-04-09 1992-11-02 Mitsubishi Heavy Ind Ltd Nozzle-shape change control device
JPH0617846B2 (en) * 1988-08-05 1994-03-09 川崎重工業株式会社 Variable nozzle controller for high speed wind tunnel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6332337A (en) * 1986-07-25 1988-02-12 Mitsubishi Heavy Ind Ltd Supersonic wind channel with flexible nozzle
JPH0617846B2 (en) * 1988-08-05 1994-03-09 川崎重工業株式会社 Variable nozzle controller for high speed wind tunnel
JPH04310834A (en) * 1991-04-09 1992-11-02 Mitsubishi Heavy Ind Ltd Nozzle-shape change control device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107389293A (en) * 2017-07-12 2017-11-24 中国人民解放军63926部队 A kind of method for detecting Wind Tunnel Contraction inner mold face wrap-around error
CN107389293B (en) * 2017-07-12 2019-04-05 中国人民解放军63926部队 A method of detection Wind Tunnel Contraction inner mold face wrap-around error
CN113049212A (en) * 2021-03-29 2021-06-29 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 Hydraulic driving device applied to molding of profile of wind tunnel spray pipe
CN113049212B (en) * 2021-03-29 2023-07-14 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 Hydraulic driving device applied to molding of wind tunnel spray pipe profile

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