CN101923359A - Quick and stable control device of gas pressure in variable volume cavity - Google Patents
Quick and stable control device of gas pressure in variable volume cavity Download PDFInfo
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- CN101923359A CN101923359A CN 201010262320 CN201010262320A CN101923359A CN 101923359 A CN101923359 A CN 101923359A CN 201010262320 CN201010262320 CN 201010262320 CN 201010262320 A CN201010262320 A CN 201010262320A CN 101923359 A CN101923359 A CN 101923359A
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Abstract
The invention belongs to an aircraft engine semi-physical simulation test technology and relates to a quick and stable control device of gas pressure in a variable volume cavity. The device comprises a variable volume cavity (4) and a computer (1). The quick and stable control device of gas pressure is characterized by comprising the computer (1), an electro-hydraulic servo valve (2), a PWM (Pulse-Width Modulation) controller (3), the variable volume cavity (4) and a pressure sensor (5). The invention has the advantages of quick dynamic response, high steady state precision and low cost and can stably work for a long time, thereby meeting the requirement of an aircraft engine semi-physical simulation test.
Description
Technical field
The invention belongs to aeromotor semi-physical simulation experimental technique, relate to a kind of quick and stable control device of gas pressure in variable volume cavity.
Background technology
In the aeromotor semi-physical simulation test of in the full envelope curve scope of simulation, working, should provide the air pressure of current state engine pressure tap correspondence to the actual sensor of digital control system.The semi-physical simulation exerciser requires the air pressure electrical signal conversion of engine mathematical model output is become real air pressure, so that provide experimental situation to sensor.The electropneumatic transducer of domestic present production is mainly used in industrial automation control, the particularly Long-distance Control of chemical system valve, and its performance can't be used for aeromotor semi-physical simulation test.Mainly have following problem: 1) output pressure is low, and output pressure is 0.02MPa～0.1MPa control signal.2) response time long, general time constant was about about 0.5 second.Domestic do not have to supply the quick and stable control device of gas pressure in variable volume cavity of aeromotor semi-physical simulation test at present.Muscovite quick and stable control device of gas pressure in variable volume cavity can be applied to aeromotor semi-physical simulation test, but its price is expensive, cost is high, buying is restricted; And unstable properties, demarcate at any time, serviceable life is short, and air consumption is big.
Summary of the invention
The objective of the invention is: propose a kind of response time fast, stable state accuracy is high, air consumption is little, cost is low, the quick and stable control device of gas pressure in variable volume cavity of steady operation for a long time, to satisfy the needs of aeromotor semi-physical simulation test.
Technical scheme of the present invention is: quick and stable control device of gas pressure in variable volume cavity, comprise a variable volume cavity and computing machine, it is characterized in that quick and stable control device of gas pressure is made up of computing machine, electrohydraulic servo valve, PWM controller, variable volume cavity and pressure transducer; Computing machine is connected with the PWM controller by bus, the control signal output ends of PWM controller is connected with the signal input end of electrohydraulic servo valve, the pressure signal output terminal of pressure transducer is connected with the pressure signal input end of PWM controller, the gas access of electrohydraulic servo valve is communicated with compressed gas source by pipeline, the gas vent of electrohydraulic servo valve is communicated with the gas access of variable volume cavity by pipeline, the pressure-sensitive mouth of pressure transducer is communicated with the inner chamber of variable volume cavity by pipeline, and the atmosphere entry of electrohydraulic servo valve leads to atmosphere.
Advantage of the present invention is: dynamic response is fast, and time constant can reach 100ms; Stable state accuracy height, control accuracy can reach controlled pressure whole process ± 1%; Cost is low; Steady operation for a long time; The needs of aeromotor semi-physical simulation test have been satisfied.
Description of drawings
Fig. 1 is a structural principle block diagram of the present invention.
Embodiment
Below the present invention is described in further details.Referring to Fig. 1, quick and stable control device of gas pressure in variable volume cavity, comprise a variable volume cavity 4 and computing machine 1, it is characterized in that quick and stable control device of gas pressure is made up of computing machine 1, electrohydraulic servo valve 2, PWM controller 3, variable volume cavity 4 and pressure transducer 5; Computing machine 1 is connected with PWM controller 3 by bus, the control signal output ends of PWM controller 3 is connected with the signal input end 2d of electrohydraulic servo valve 2, the pressure signal output terminal of pressure transducer 5 is connected with the pressure signal input end of PWM controller 3, the gas access 2a of electrohydraulic servo valve 2 is communicated with compressed gas source by pipeline, the gas vent 2c of electrohydraulic servo valve 2 is communicated with by the gas access of pipeline with variable volume cavity 4, the pressure-sensitive mouth of pressure transducer 5 is communicated with by the inner chamber of pipeline with variable volume cavity 4, and the atmosphere entry 2b of electrohydraulic servo valve 2 leads to atmosphere.
Principle of work of the present invention is: after system powers on, the pressure of variable volume cavity 4 is set by computing machine 1, control the inner chamber air feed of the valve opening of electrohydraulic servo valves 2 by PWM controller 3 to variable volume cavity 4, the pressurized air of the gas access 2a of electrohydraulic servo valve 2 is modulated into the pressure control gas of the gas vent 2c of electrohydraulic servo valve 2, and then the gaseous tension in the control variable volume cavity 4, the pressure signal that utilizes sensor 5 to gather carries out closed-loop control as feedback, has realized the fast-response control of variable volume cavity 4 pressure.
In one embodiment of the present of invention, computing machine 1 is the computing machine of aeromotor semi-physical simulation testing table, variable volume cavity 4 is an existing equipment, it is a pressure vessel that volume is adjustable, in the cavity volume inside of variable volume cavity 4 piston is arranged, can adjust piston position by manual or Mechanical Driven, thereby obtain different volumes, on the variable volume cavity 4 tensimeter is installed.Electrohydraulic servo valve 2, PWM controller 3 and pressure transducer 5 all adopt commercially available finished parts, and the model of electrohydraulic servo valve is a CSDY1-30 jet cast electrohydraulic servo valve, and the PWM controller is PWM-100, and sensor is selected the pressure resistance type pressure unit of CYG1402 for use.
Claims (1)
1. quick and stable control device of gas pressure in variable volume cavity, comprise a variable volume cavity [4] and computing machine [1], it is characterized in that quick and stable control device of gas pressure is made up of computing machine [1], electrohydraulic servo valve [2], PWM controller [3], variable volume cavity [4] and pressure transducer [5]; Computing machine [1] is connected with PWM controller [3] by bus, the control signal output ends of PWM controller [3] is connected with the signal input end [2d] of electrohydraulic servo valve [2], the pressure signal output terminal of pressure transducer [5] is connected with the pressure signal input end of PWM controller [3], the gas access [2a] of electrohydraulic servo valve [2] is communicated with compressed gas source by pipeline, the gas vent [2c] of electrohydraulic servo valve [2] is communicated with by the gas access of pipeline with variable volume cavity [4], the pressure-sensitive mouth of pressure transducer [5] is communicated with by the inner chamber of pipeline with variable volume cavity [4], and the atmosphere entry [2b] of electrohydraulic servo valve [2] leads to atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102623206A CN101923359B (en) | 2010-08-23 | 2010-08-23 | Quick and stable control device of gas pressure in variable volume cavity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102623206A CN101923359B (en) | 2010-08-23 | 2010-08-23 | Quick and stable control device of gas pressure in variable volume cavity |
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| Publication Number | Publication Date |
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| CN101923359A true CN101923359A (en) | 2010-12-22 |
| CN101923359B CN101923359B (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102623206A Active CN101923359B (en) | 2010-08-23 | 2010-08-23 | Quick and stable control device of gas pressure in variable volume cavity |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068446A (en) * | 2015-07-31 | 2015-11-18 | 通辽发电总厂 | Air pressure adjusting object and thermotechnical air pressure automatic control system |
| CN105446383A (en) * | 2015-12-28 | 2016-03-30 | 苟仲武 | Pulse width modulation gas-based depressurizing method and device |
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| DE3943357A1 (en) * | 1989-12-29 | 1991-07-04 | Rexroth Mannesmann Gmbh | CIRCUIT ARRANGEMENT WITH A CONTROL ELECTRONICS FOR THE MAGNETIC COILS OF ACTUATORS OF A HYDRAULIC SYSTEM |
| JPH10141305A (en) * | 1996-11-15 | 1998-05-26 | Kenji Masuda | Hydraulic control device |
| CN201177766Y (en) * | 2008-04-24 | 2009-01-07 | 上海科系思工业设备有限公司 | Electronic pressure controller based on PID control algorithm |
| CN101387236A (en) * | 2008-11-03 | 2009-03-18 | 北京汽车研究总院有限公司 | Variable nozzle turbocharging control method and system |
| CN101545411A (en) * | 2008-03-27 | 2009-09-30 | 广西玉柴机器股份有限公司 | Boosting compensation device of engine |
| KR100942708B1 (en) * | 2009-01-12 | 2010-02-16 | 국방과학연구소 | Flow control valve assembly and flow control system |
| CN101063425B (en) * | 2006-04-28 | 2010-09-29 | 株式会社日立制作所 | Fuel supply equipment for motor and control method thereof |
| CN101975300A (en) * | 2010-09-27 | 2011-02-16 | 苏明 | Method and device for controlling high-speed electromagnetic switch valve to adapt to pressure change at oil supply port |
-
2010
- 2010-08-23 CN CN2010102623206A patent/CN101923359B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3943357A1 (en) * | 1989-12-29 | 1991-07-04 | Rexroth Mannesmann Gmbh | CIRCUIT ARRANGEMENT WITH A CONTROL ELECTRONICS FOR THE MAGNETIC COILS OF ACTUATORS OF A HYDRAULIC SYSTEM |
| JPH10141305A (en) * | 1996-11-15 | 1998-05-26 | Kenji Masuda | Hydraulic control device |
| CN101063425B (en) * | 2006-04-28 | 2010-09-29 | 株式会社日立制作所 | Fuel supply equipment for motor and control method thereof |
| CN101545411A (en) * | 2008-03-27 | 2009-09-30 | 广西玉柴机器股份有限公司 | Boosting compensation device of engine |
| CN201177766Y (en) * | 2008-04-24 | 2009-01-07 | 上海科系思工业设备有限公司 | Electronic pressure controller based on PID control algorithm |
| CN101387236A (en) * | 2008-11-03 | 2009-03-18 | 北京汽车研究总院有限公司 | Variable nozzle turbocharging control method and system |
| KR100942708B1 (en) * | 2009-01-12 | 2010-02-16 | 국방과학연구소 | Flow control valve assembly and flow control system |
| CN101975300A (en) * | 2010-09-27 | 2011-02-16 | 苏明 | Method and device for controlling high-speed electromagnetic switch valve to adapt to pressure change at oil supply port |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068446A (en) * | 2015-07-31 | 2015-11-18 | 通辽发电总厂 | Air pressure adjusting object and thermotechnical air pressure automatic control system |
| CN105068446B (en) * | 2015-07-31 | 2019-01-18 | 通辽发电总厂 | A kind of air pressure adjustment object and thermal technology's air pressure automatic control system |
| CN105446383A (en) * | 2015-12-28 | 2016-03-30 | 苟仲武 | Pulse width modulation gas-based depressurizing method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101923359B (en) | 2012-07-18 |
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