CN106679925A - High-precision control device and control method for micro-mass jet flow rate - Google Patents
High-precision control device and control method for micro-mass jet flow rate Download PDFInfo
- Publication number
- CN106679925A CN106679925A CN201611161927.9A CN201611161927A CN106679925A CN 106679925 A CN106679925 A CN 106679925A CN 201611161927 A CN201611161927 A CN 201611161927A CN 106679925 A CN106679925 A CN 106679925A
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- flow
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Classifications
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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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
Abstract
The invention belongs to the technical field of aerodynamic wind tunnel test, and relates to a high-precision control device and control method for the micro-mass jet flow rate. The control device of the invention comprises an air filter (1), a pressure reducing valve (2), an upstream digital pressure sensor (3), an air flow path assembly, a downstream digital pressure sensor (4), a control computer (5), and a digital flow sensor (6). The method of the invention comprises the steps of receiving a measured value of the flow rate of the digital flow sensor (6), comparing the difference, calculating the flow control increment, calculating the new control quantity, and controlling the opening and closing of a solenoid valve until the difference between the measured value of the flow rate and an expected value of the flow rate is less than a set error value. According to the invention, the control device and method can control jet flow rate in the wind tunnel test precisely, have the advantages of wide adjustable range, fast response, smooth effect without burr and the like, and achieve the technical purpose of precise control of the micro-mass jet of the jet control model in the wind tunnel test.
Description
Technical field
The invention belongs to aviation aerodynamic force wind-tunnel technique field, is related to a kind of micro- quality spray flow high-precision control
Device and control method.
Background technology
Applied research at present both at home and abroad to active Flow Control technology in aircraft industry is more and more deep, due to actively
The plurality of advantages that flow control technique itself has, such as structure are little, lightweight, easy to control, and active Flow Control
Technology will not bring negative effect etc., therefore active Flow Control technology for weight demands pole when it is not needed
For harsh aviation field, with application prospect widely.
Micro- quality spray control technology in active Flow Control belongs to the design such as aircraft air intake duct, fluid vectors jet pipe
Technology, it is not necessary to the former agent structure of transformation, and use simply, conveniently, control effect significantly, since proposition, has constantly developed, into
It is that aircraft air intake duct and fluid vectors jet pipe control important technological means.
The control of micro- quality spray is widely used in the improvement for improving airplane intake performance, such as by jet orifice to entering
Air flue main flow injects high energy fluid, can increase boundary region energy, slows down or eliminates flow separation and formed, and makes stream in pipeline
It is dynamic to become more uniform.Equally, more application is there is also in fluid vectors control jet pipe in jet, it is by means of two strands for introducing
Injection diffluence affects main flow state so as to changes direction, and then realizes thruster vector control.
Therefore the associated jets test such as air intake duct jet vectoring, fluid vectors jet pipe in wind-tunnel is required to high-precision penetrating
Flow control device, jet flow control device also thus become the key equipment of jet vectoring class wind tunnel test, it and test mould
The key position of type is connected, and for jet accurate jet condition is provided.
At present country's wind-tunnel carries out wind tunnel test jet flow control device, its precision using common pressure regulator valve mostly
Substantially use demand can be met, but common pressure regulator valve is present, and stroke is shorter, there is valve event certain non-linear, pressure to adjust
The problems such as interfering between delayed serious, pipeline, therefore select common regulating valve to fill as the control of wind tunnel test jet flow
Put and there is certain technical risk.
The content of the invention
The purpose of the present invention is：A kind of micro- quality spray flow high-precision control device and control method are proposed, so as to energy
Enough continue the flow of jet in precise control test, solve the micro- quality spray of jet vectoring model in wind tunnel test and continue accurate control
The problem of system.
The technical scheme is that：A kind of micro- quality spray flow high-precision control device, it is characterised in that：It includes
Digital pressure sensor 3, the current path arranged by binary rules by 10 road surfaces product before air filter 1, air relief valve 2, valve
Digital pressure sensor 4, control computer 5 and on wind tunnel test equipment after the current path component, the valve that compose in parallel
Digital flow sensor 6；The air inlet C of the air inlet of air filter 1 and micro- quality spray flow high-precision control device
Connection, the gas outlet of air filter 1 connect with the air inlet of air relief valve 2, the gas outlet of air relief valve 2 respectively with digital press before valve
The pressure-sensitive mouth of force transducer 3 is connected with the air inlet of current path component in parallel, the gas outlet difference of current path component in parallel
Connect with the pressure-sensitive mouth of the 2nd digital pressure sensor 4 and the gas outlet of micro- quality spray flow high-precision control device；Number before valve
After word pressure transducer 3 and valve the signal output end of digital pressure sensor 4 respectively with the corresponding pressure of control computer 5
Signal input part connects, and is composed in series by an electromagnetic valve and a venturi nozzle per road current path, the air inlet of electromagnetic valve
Connect with the air inlet of current path component, the gas outlet of electromagnetic valve connects with the air inlet of venturi nozzle, venturi nozzle goes out
QI KOU is connected with the gas outlet of current path component, and the 1st road current path is connected by the 1st electromagnetic valve F1 and the 1st venturi nozzle G1
Composition, the 2nd road current path is composed in series by the 2nd electromagnetic valve F2 and the 2nd venturi nozzle G2, the like, and 10 Venturi tubes
Throat area is arranged by binary rules；The control signal input of 10 electromagnetic valves respectively with 10 electricity of control computer 5
The connection of magnet valve control signal output, the flow signal outfan of digital flow sensor 6 and the flow signal of control computer 5
Input connects；Gradually increase by binary system from the throat area of the 1st venturi nozzle G10 of venturi nozzle G1 to the 10th, control meter
Calculation machine 5 receives the actual flow value of the measurement of digital flow sensor 6, and actual flow value is compared with preset expectation flow value
Compared with by the break-make of each electromagnetic valve in control current path component, combination is realized to jet vectoring class wind-tunnel jet flow
High-precision control.
A kind of micro- quality spray flow high-accuracy control method, is controlled based on micro- quality spray flow high accuracy recited above
Device processed, it is characterised in that as follows the step of control：
1st, run before computer-controlled program, by the electromagnetic valve Close All in current path component；
2nd, run before computer-controlled program, in the preset expectation flow value and error amount of program interface input jet, in advance
Arbitrary value of the expected value in the range of range 1g/s~100g/s is put, error amount is between 0.1g/s~0.2g/s；
3rd, run computer-controlled program, the measured value of computer acquisition digital flow sensor 6, and by the measured value with
Preset expectation flow value relatively obtains residual quantity；
4th, obtain obtaining flow-control increment using classical control algolithm increment type PID algorithm after residual quantity；
5th, it is added flow-control increment with present flow rate measured value as new controlled quentity controlled variable；
6, computer is judged the digit for increasing or decreasing path assembly solenoid quantity by new controlled quentity controlled variable；
7th, the step of computer-controlled program repeats 3~6 automatically, until flow measured value is little with the residual quantity of flow expected value
In setting error amount；
8th, computer-controlled program is stopped.
It is an advantage of the invention that：A kind of micro- quality spray flow high-precision control device and control method are proposed, can
The flow of jet in precise control wind tunnel test, has the advantages that adjustable extent width, response time be fast, the steady impulse- free robustness of effect,
Simultaneously control form and supply air line structure are simplified, fabulous meets the high-precision control of jet vectoring class wind-tunnel jet flow
System requirement, solves the problems, such as the micro- quality spray precise control of jet vectoring model in wind tunnel test.One enforcement of the present invention
Example, in simple and rapid mode any control in the range of jet air flow 1g/s~100g/s is realized, while controlling essence
Degree is better than 0.1g/s.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Specific embodiment
The present invention is described in further details below.Referring to Fig. 1, a kind of micro- quality spray flow high-precision control dress
Put, it is characterised in that：It includes digital pressure sensor 3 before air filter 1, air relief valve 2, valve, is entered by two by 10 road surface products
Digital pressure sensor 4, the and of control computer 5 after current path component, valve that the regularly arranged current path of system is composed in parallel
Digital flow sensor 6 on wind tunnel test equipment；The air inlet of air filter 1 is high-precision with micro- quality spray flow
The air inlet C connections of degree control device, the gas outlet of air filter 1 connects with the air inlet of air relief valve 2, and air relief valve 2 goes out
QI KOU is connected respectively with the air inlet of the pressure-sensitive mouth of digital pressure sensor before valve 3 and current path component in parallel, air-flow in parallel
The gas outlet of path component fills respectively with the pressure-sensitive mouth of the 2nd digital pressure sensor 4 and micro- quality spray flow high-precision control
The gas outlet connection put；Before valve after digital pressure sensor 3 and valve the signal output end of digital pressure sensor 4 respectively with
The corresponding pressure signal input end of control computer 5 connects, per road current path by an electromagnetic valve and a venturi nozzle string
Joint group is into the air inlet of electromagnetic valve is connected with the air inlet of current path component, the gas outlet of electromagnetic valve and entering for venturi nozzle
QI KOU is connected, and the gas outlet of venturi nozzle connects with the gas outlet of current path component, and the 1st road current path is by the 1st electromagnetic valve
F1 and the 1st venturi nozzle G1 are composed in series, and the 2nd road current path is composed in series by the 2nd electromagnetic valve F2 and the 2nd venturi nozzle G2,
The like, and 10 Venturi tube throat areas are by binary rules arrangement；The control signal input difference of 10 electromagnetic valves
Be connected with 10 solenoid valve control signal outfans of control computer 5, the flow signal outfan of digital flow sensor 6 with
The flow signal input connection of control computer 5；Press from the throat area of the 1st venturi nozzle G10 of venturi nozzle G1 to the 10th
Binary system gradually increases, control computer 5 receive digital flow sensor 6 measurement actual flow value, by actual flow value with
Preset expectation flow value is compared, and by the break-make of each electromagnetic valve in control current path component, combination is realized to penetrating
The high-precision control of flow control class wind-tunnel jet flow.
A kind of micro- quality spray flow high-accuracy control method, is controlled based on micro- quality spray flow high accuracy recited above
Device processed, it is characterised in that as follows the step of control：
1st, run before computer-controlled program, by the electromagnetic valve Close All in current path component；
2nd, run before computer-controlled program, in the preset expectation flow value and error amount of program interface input jet, in advance
Arbitrary value of the expected value in the range of range 1g/s~100g/s is put, error amount is between 0.1g/s~0.2g/s；
3rd, run computer-controlled program, the measured value of computer acquisition digital flow sensor 6, and by the measured value with
Preset expectation flow value relatively obtains residual quantity；
4th, obtain obtaining flow-control increment using classical control algolithm increment type PID algorithm after residual quantity；
5th, it is added flow-control increment with present flow rate measured value as new controlled quentity controlled variable；
6, computer is judged the digit for increasing or decreasing path assembly solenoid quantity by new controlled quentity controlled variable；
7th, the step of computer-controlled program repeats 3~6 automatically, until flow measured value is little with the residual quantity of flow expected value
In setting error amount；
8th, computer-controlled program is stopped.
Embodiment 1：Referring to Fig. 1, a kind of micro- quality spray flow high-precision control device, it includes air filter 1, subtracts
Digital pressure is passed after digital pressure sensor 3 before pressure valve 2, valve, current path component, the valve composed in parallel by 10 road current paths
Sensor 4, control computer 5 and the digital flow sensor on wind tunnel test equipment 6.Control computer 5 receives numeral
The actual flow value of the measurement of flow transducer 6, actual flow value is compared with preset expectation flow value, by controlling gas
The high-precision control to jet vectoring class wind-tunnel jet flow is realized in the break-make of each electromagnetic valve in logical circulation road component, combination.10
The parameter of road venturi nozzle is shown in Table 1：
The venturi nozzle parameter list of table 1.
Claims (2)
1. a kind of micro- quality spray flow high-precision control device, it is characterised in that：It includes air filter (1), air relief valve
(2), digital pressure sensor (3), the air-flow composed in parallel by the current path that binary rules are arranged by 10 road surface products before valve
Digital pressure sensor (4), control computer (5) and the digital flow on wind tunnel test equipment after path component, valve
Sensor (6)；The air inlet of air filter (1) is connected with the air inlet C of micro- quality spray flow high-precision control device, empty
The gas outlet of air filter (1) connects with the air inlet of air relief valve (2), the gas outlet of air relief valve (2) respectively with valve before numeral pressure
The pressure-sensitive mouth of force transducer (3) is connected with the air inlet of current path component in parallel, the gas outlet point of current path component in parallel
Do not connect with the pressure-sensitive mouth of the 2nd digital pressure sensor (4) and the gas outlet of micro- quality spray flow high-precision control device；Valve
After front digital pressure sensor (3) and valve the signal output end of digital pressure sensor (4) respectively with control computer (5)
Corresponding pressure signal input end connection, is composed in series, electromagnetism per road current path by an electromagnetic valve and a venturi nozzle
The air inlet of valve is connected with the air inlet of current path component, and the gas outlet of electromagnetic valve connects with the air inlet of venturi nozzle, text
The gas outlet of family name's jet pipe connects with the gas outlet of current path component, and the 1st road current path is by the 1st electromagnetic valve F1 and the 1st Wen
Jet pipe G1 is composed in series, and the 2nd road current path is composed in series by the 2nd electromagnetic valve F2 and the 2nd venturi nozzle G2, the like, and
10 Venturi tube throat areas are arranged by binary rules；The control signal input of 10 electromagnetic valves respectively with control computer
(5) 10 solenoid valve control signal outfans connection, flow signal outfan and the control of digital flow sensor (6) are calculated
The flow signal input connection of machine (5)；Binary system is pressed from the throat area of the 1st venturi nozzle G10 of venturi nozzle G1 to the 10th
Gradually increase, control computer (5) receive digital flow sensor (6) measurement actual flow value, by actual flow value with it is pre-
The expectation flow value put is compared, and by the break-make of each electromagnetic valve in control current path component, combination is realized to jet
The high-precision control of control class wind-tunnel jet flow.
2. a kind of micro- quality spray flow high-accuracy control method, high-precision based on the micro- quality spray flow described in claim 1
Degree control device, it is characterised in that as follows the step of control：
2.1st, run before computer-controlled program, by the electromagnetic valve Close All in current path component；
2.2nd, run before computer-controlled program, it is preset in the preset expectation flow value and error amount of program interface input jet
Arbitrary value of the expected value in the range of range 1g/s~100g/s, error amount is 0.1g/s；
2.3rd, run computer-controlled program, the measured value of computer acquisition digital flow sensor (6), and by the measured value with
Preset expectation flow value relatively obtains residual quantity；
2.4th, obtain obtaining flow-control increment using classical control algolithm increment type PID algorithm after residual quantity；
2.5th, it is added flow-control increment with present flow rate measured value as new controlled quentity controlled variable；
2.6, computer is judged the digit for increasing or decreasing path assembly solenoid quantity by new controlled quentity controlled variable；
2.7th, the step of computer-controlled program repeats 2.3~2.6 automatically, until the residual quantity of flow measured value and flow expected value
Less than setting error amount；
2.8th, computer-controlled program is stopped.
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| CN201611161927.9A CN106679925A (en) | 2016-12-15 | 2016-12-15 | High-precision control device and control method for micro-mass jet flow rate |
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| CN201611161927.9A CN106679925A (en) | 2016-12-15 | 2016-12-15 | High-precision control device and control method for micro-mass jet flow rate |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367368A (en) * | 2017-09-20 | 2017-11-21 | 中国航空工业集团公司哈尔滨空气动力研究所 | A kind of high-precision microjet experiment piping installation |
| CN108036081A (en) * | 2017-11-02 | 2018-05-15 | 中国航空工业集团公司哈尔滨空气动力研究所 | A kind of wind-tunnel high-precision flow control valve |
| CN108827584A (en) * | 2018-06-05 | 2018-11-16 | 安徽枫雅轩科技信息服务有限公司 | A kind of wind tunnel experiment device of power transmission line wind noise |
| CN109029897A (en) * | 2018-06-05 | 2018-12-18 | 安徽枫雅轩科技信息服务有限公司 | A kind of intelligent wind tunnel experiment device of power transmission line wind noise |
| CN109596302A (en) * | 2018-11-02 | 2019-04-09 | 中国航空工业集团公司西安飞机设计研究所 | A kind of flow control ejection system of dummy vehicle low-speed wind tunnel experiment |
| CN110686905A (en) * | 2019-10-09 | 2020-01-14 | 浙江多普勒环保科技有限公司 | Simulated exhaust emission device for motor vehicle remote sensing equipment |
| CN112502856A (en) * | 2020-11-25 | 2021-03-16 | 北京航空航天大学 | Liquid oxygen and oxygen double-path adjustable supply system |
| CN114414194A (en) * | 2021-09-07 | 2022-04-29 | 中国空气动力研究与发展中心空天技术研究所 | Parameter adjusting device and method for hypersonic-speed variable Mach number wind tunnel |
| CN114460978A (en) * | 2022-01-14 | 2022-05-10 | 卓外（上海）医疗电子科技有限公司 | Large-range high-precision fluid adjusting device and method |
| US11526181B2 (en) | 2018-01-30 | 2022-12-13 | Illinois Tool Works Inc. | Mass flow controller with absolute and differential pressure transducer |
| CN115824575A (en) * | 2023-02-22 | 2023-03-21 | 中国空气动力研究与发展中心超高速空气动力研究所 | Test method for obtaining influence of model surface micro-jet on aerodynamic characteristics |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367368A (en) * | 2017-09-20 | 2017-11-21 | 中国航空工业集团公司哈尔滨空气动力研究所 | A kind of high-precision microjet experiment piping installation |
| CN108036081A (en) * | 2017-11-02 | 2018-05-15 | 中国航空工业集团公司哈尔滨空气动力研究所 | A kind of wind-tunnel high-precision flow control valve |
| US11526181B2 (en) | 2018-01-30 | 2022-12-13 | Illinois Tool Works Inc. | Mass flow controller with absolute and differential pressure transducer |
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| CN108827584A (en) * | 2018-06-05 | 2018-11-16 | 安徽枫雅轩科技信息服务有限公司 | A kind of wind tunnel experiment device of power transmission line wind noise |
| CN109029897A (en) * | 2018-06-05 | 2018-12-18 | 安徽枫雅轩科技信息服务有限公司 | A kind of intelligent wind tunnel experiment device of power transmission line wind noise |
| CN109596302A (en) * | 2018-11-02 | 2019-04-09 | 中国航空工业集团公司西安飞机设计研究所 | A kind of flow control ejection system of dummy vehicle low-speed wind tunnel experiment |
| CN110686905A (en) * | 2019-10-09 | 2020-01-14 | 浙江多普勒环保科技有限公司 | Simulated exhaust emission device for motor vehicle remote sensing equipment |
| CN112502856A (en) * | 2020-11-25 | 2021-03-16 | 北京航空航天大学 | Liquid oxygen and oxygen double-path adjustable supply system |
| CN112502856B (en) * | 2020-11-25 | 2021-11-19 | 北京航空航天大学 | Liquid oxygen and oxygen double-path adjustable supply system |
| CN114414194A (en) * | 2021-09-07 | 2022-04-29 | 中国空气动力研究与发展中心空天技术研究所 | Parameter adjusting device and method for hypersonic-speed variable Mach number wind tunnel |
| CN114460978A (en) * | 2022-01-14 | 2022-05-10 | 卓外（上海）医疗电子科技有限公司 | Large-range high-precision fluid adjusting device and method |
| CN115824575A (en) * | 2023-02-22 | 2023-03-21 | 中国空气动力研究与发展中心超高速空气动力研究所 | Test method for obtaining influence of model surface micro-jet on aerodynamic characteristics |
| CN115824575B (en) * | 2023-02-22 | 2023-04-18 | 中国空气动力研究与发展中心超高速空气动力研究所 | Test method for obtaining influence of model surface micro-jet on aerodynamic characteristics |
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