CN201866014U - Measure and control system of electro-hydraulic servo valve - Google Patents

Measure and control system of electro-hydraulic servo valve Download PDF

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Publication number
CN201866014U
CN201866014U CN2010206325748U CN201020632574U CN201866014U CN 201866014 U CN201866014 U CN 201866014U CN 2010206325748 U CN2010206325748 U CN 2010206325748U CN 201020632574 U CN201020632574 U CN 201020632574U CN 201866014 U CN201866014 U CN 201866014U
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China
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signal
control
servo valve
electro
electrohydraulic control
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Expired - Fee Related
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CN2010206325748U
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Chinese (zh)
Inventor
卞军
李艳杰
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Shenyang Ligong University
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Shenyang Ligong University
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Abstract

The utility model relates to a measure and control system of an electro-hydraulic servo valve, which consists of a hardware part and a software part, wherein the hardware part comprises sensors, a collection card, a signal regulating circuit and a computer; the software part is divided into three testing modules, i.e. an electro-hydraulic servo valve static characteristic module, a proportion integral differentiation (PID) closed-loop control module and an electro-hydraulic servo valve dynamic characteristic module. Firstly a signal of each sensor passes through the signal regulating circuit of the hardware part to be analog/digital (D/A) converted to a digital signal by the collection card, a signal programmed by the software is used as a control signal of the servo valve after the D/A conversion by the collection card, and the testing function is realized by each module in the program. Due to the adoption of the measure and control system of the electro-hydraulic servo valve, the environment of the measure and control system is effectively improved, the testing cost of the electro-hydraulic servo valve and the influence of human factors can be reduced, the operation procedures can be greatly simplified, and the testing precision and efficiency can be improved.

Description

A kind of electrohydraulic control TT﹠C system
Technical field
The utility model is a kind of electrohydraulic control TT﹠C system, belongs to the technical field of measurement and test of electrohydraulic control.
Background technique
Electrohydraulic control is the high-accuracy parts that combine machinery, electronics and hydraulics, have the control accuracy height, speed of response is fast, signal processing is flexible, output power is big and advantage such as compact structure, is widely used in main field such as metallurgical machinery, Aero-Space, naval vessel and weapon industry.The detection of electrohydraulic control is for the performance index that guarantee servovalve and guarantee that accurate, quick, the stable work of electrohydraulic servo-controlling system has important meaning.
FESTO TP511 Laboratory Furniture is the Hydrauservo System Laboratory Furniture that German FESTO company produces, and its physical hardware condition also should belong to international most advanced level now, and the part hydraulic pressure of many domestic Educational Instrument Factories also is the configuration of imitating FESTO with pneumatic test rig.But it still adopts traditional manual TT﹠C system, and this system utilizes button, signal generator, recorder, oscillograph to wait and realizes, testing cost height, complex structure are influenced greatly by personal factor during test, and test accuracy is relatively poor, and precision is low.Be difficult to the requirement of adaptation hydraulic pressure and pneumatic industry to system design, test and the monitoring etc. of mechanical-electrical-hydraulic integration.
Along with signal processing technology and development of computer, the CAT system a kind of novel test system appearred, i.e..At present, the application of computer aided testing technology in hydraulic test system is very extensive, because electrohydraulic control is very complicated and accurate servoelement, its performance parameter and index request are very various, require also very strictly, the testing property of electrohydraulic control comes into one's own always.Aspect the research of computer aided testing The Application of Technology because electrohydraulic control of a great variety, simultaneously sensor, signal generator and surveying instrument instrument select difference for use, the formation of electrohydraulic control Performance Test System presents diversity.
The model utility content
The purpose of this utility model is to be that purpose provides a kind of electrohydraulic control TT﹠C system with FESTO TP511, and this device has improved the TT﹠C system environment effectively, has simplified operating procedure greatly, has improved the precision and the efficient of test.
The technical solution of the utility model is as follows:
A kind of electrohydraulic control TT﹠C system comprises pumping source, oil purifier, electrohydraulic control, proportional pressure control valve, oil hydraulic cylinder, pressure flow displacement transducer, control box, computer.Behind the signal conditioning circuit in the signal process control box of pressure flow displacement transducer, by the high-speed collection card in the control box these signals are carried out the A/D conversion, open corresponding test module according to different hydraulic characteristic loops, give servovalve by computer output control signal, finish collection, computing, the record of sensor signal, draw the curve of correspondence, each performance characteristics parameter of calculating electrohydraulic control, generation laboratory report according to the data of gathering, by each sensor states in the computer real-time monitoring system and oil circuit movement process.
In the described TT﹠C system, on the described sensor quick plug is housed, is used for sensor and is connected with system.Described high-speed collection card is 12 USB2828 data collecting cards, and this data collecting card is that data are gathered on the one hand, and analog signal conversion is become digital signal; Be that the usb data capture card links to each other with USB interface of computer on the other hand, realize plug and play.D.C. regulated power supply, signal conditioning circuit and data collecting card are housed in the described control box, D.C. regulated power supply provides+12V ,-12V ,+24V ,+the 5V DC electrical source, signal conditioning circuit have current conversion, hardware filtering, signal amplify follow, the plus and minus calculation function.Each performance characteristics parameter of described calculating electrohydraulic control is found the solution multinomial algorithm by least square fitting algorithm and Newton iteration and is realized.
The area of computer aided TT﹠C system operating procedure that the utility model is developed is as follows: at first build each hydraulic test loop according to the testing property principle, open the corresponding test module in the computer measurement and control software then, after importing some call parameters, click begins test, computer carries out signal output, data capture and data processing automatically, record corresponding data by the click function button, and draw out the corresponding characteristics curve, calculate characteristic parameter value.
The utility model TT﹠C system contrasts the TT﹠C system of original FESTO TP511 Laboratory Furniture and has improved the TT﹠C system environment effectively, solved the problem that conventional test methodologies exists, simplify test process and operating procedure greatly, significantly improved electrohydraulic control testing property precision and efficient.
Description of drawings
Fig. 1 is a theory diagram of the present utility model.
Fig. 2 is the utility model hardware conditioning circuit schematic diagram.
Fig. 3 is the utility model TT﹠C system modular structure figure.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and example.
As shown in Figure 1, the input current signal of each sensor at first passes through the hardware conditioning circuit, is transformed into the standard signal that can import capture card, carries out the A/D sampling by data capture and processing equipment then, change into digital signal, be connected with computer by the usb communication line; Required signal in the experimentation takes place by the signal of software programming, converts analogue signal to by capture card D/A and directly flows to electrohydraulic control, and servovalve converts the electrical signal to pressure signal and drives the oil hydraulic cylinder action.
As shown in Figure 2, the hardware conditioning circuit have current conversion, hardware filtering, signal amplify follow, effect such as plus and minus calculation.Current signal can not by precision resister, amplification, the arithmetic circuit of hardware conditioning circuit, change the voltage signal of 0-10V into directly by computer acquisition; The effect of hardware filtering is to eliminate the noise signal that is comprised in the primary signal, causes signal amplitude decay and phase lag when preventing to test, and makes signal steady; It is that voltage signal with 1-5V amplifies 2.5 times to 2.5-12.5V that signal amplifies the effect follow, and other circuit exert an influence to conditioning circuit when preventing that conditioning circuit is connected in the TT﹠C system, improve the stability and the interference free performance of system; The effect of plus and minus calculation is the conditioned signal amplitude, and making the 2.5-12.5V voltage transition is the normal voltage of 0-10V.
As shown in Figure 3, TT﹠C system is divided into three big test modules altogether: electrohydraulic control static characteristic module, PID closed loop control module, electrohydraulic control dynamics.Wherein, electrohydraulic control static characteristic module is divided into pressure gain characteristics, no load discharge characteristic, pressure flow characteristics auto, internal leakage characteristic again; PID closed loop control module is divided into again: control of PID position closed loop and the control of PID pressure closed loop.Write TT﹠C software according to the parameter that each characteristic test principle and needs record, in doing the process of experiment, at first the connection performance test loop checks whether the loop connects, and opens control box power supply and pumping source then, open corresponding TT﹠C system module afterwards, the button of clicking in the TT﹠C system is finished experimental implementation, and required control signal in the experimentation takes place by the signal of software programming, test function is realized by each module in the program, greatly reduces system cost.

Claims (5)

1. electrohydraulic control TT﹠C system, comprise pumping source, oil purifier, electrohydraulic control, proportional pressure control valve, oil hydraulic cylinder, pressure, flow, displacement transducer, control box, computer is characterized in that: adopt sensor as pressure, flow, the displacement detecting element, pressure, flow, behind the signal conditioning circuit in the displacement signal process control box, by the high-speed collection card in the control box these signals are carried out the A/D conversion, open corresponding test module according to different hydraulic characteristic loops, give servovalve, finish the collection of sensor signal by computer output control signal, computing, record, draw corresponding curve according to the data of gathering, calculate each performance characteristics parameter of electrohydraulic control, generate laboratory report, by each sensor states in the computer real-time monitoring system and oil circuit movement process.
2. a kind of electrohydraulic control TT﹠C system according to claim 1 is characterized in that: on described sensor quick plug is housed, is used for sensor and is connected with system.
3. a kind of electrohydraulic control TT﹠C system according to claim 1 is characterized in that: described high-speed collection card is 12 USB2828 data collecting cards, and this data collecting card is that data are gathered on the one hand, and analog signal conversion is become digital signal; Be that the usb data capture card links to each other with USB interface of computer on the other hand, realize plug and play.
4. a kind of electrohydraulic control TT﹠C system according to claim 1, it is characterized in that: D.C. regulated power supply, signal conditioning circuit and data collecting card are housed in the described control box, D.C. regulated power supply provides+12V ,-12V ,+24V ,+the 5V DC electrical source, signal conditioning circuit have current conversion, hardware filtering, signal amplify follow, the plus and minus calculation function.
5. a kind of electrohydraulic control TT﹠C system according to claim 1 is characterized in that: each performance characteristics parameter of described calculating electrohydraulic control is found the solution multinomial algorithm by least square fitting algorithm and Newton iteration and is realized.
CN2010206325748U 2010-11-30 2010-11-30 Measure and control system of electro-hydraulic servo valve Expired - Fee Related CN201866014U (en)

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CN2010206325748U CN201866014U (en) 2010-11-30 2010-11-30 Measure and control system of electro-hydraulic servo valve

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Application Number Priority Date Filing Date Title
CN2010206325748U CN201866014U (en) 2010-11-30 2010-11-30 Measure and control system of electro-hydraulic servo valve

Publications (1)

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CN201866014U true CN201866014U (en) 2011-06-15

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102287419A (en) * 2011-06-16 2011-12-21 中国人民解放军海军航空工程学院 Device and method for automatically testing performance of steering engine servo valve
CN102478033A (en) * 2010-11-30 2012-05-30 沈阳理工大学 Measuring and controlling system of electro-hydraulic servo valve
CN103148055A (en) * 2013-03-19 2013-06-12 湖南大学 Electro-hydraulic servo valve frequency characteristic test system
CN104121252A (en) * 2013-04-24 2014-10-29 穆格股份有限公司 Delay-minimized detection of an auxiliary control variable
CN105041779A (en) * 2015-06-12 2015-11-11 合肥市徽腾网络科技有限公司 Frequency characteristic test data acquisition board based on ARM electro-hydraulic servo valve
CN105840582A (en) * 2016-04-27 2016-08-10 兰州元创机电科技有限公司 Portable monitoring device of hydraulic compensation circuit and adjusting and setting method
CN106773649A (en) * 2016-12-21 2017-05-31 成都千嘉科技有限公司 A kind of automatic control valve for gaseous fuel door intelligent control method based on PSO pid algorithms

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102478033A (en) * 2010-11-30 2012-05-30 沈阳理工大学 Measuring and controlling system of electro-hydraulic servo valve
CN102287419A (en) * 2011-06-16 2011-12-21 中国人民解放军海军航空工程学院 Device and method for automatically testing performance of steering engine servo valve
CN103148055A (en) * 2013-03-19 2013-06-12 湖南大学 Electro-hydraulic servo valve frequency characteristic test system
CN103148055B (en) * 2013-03-19 2015-04-08 湖南大学 Electro-hydraulic servo valve frequency characteristic test system
CN104121252A (en) * 2013-04-24 2014-10-29 穆格股份有限公司 Delay-minimized detection of an auxiliary control variable
CN105041779A (en) * 2015-06-12 2015-11-11 合肥市徽腾网络科技有限公司 Frequency characteristic test data acquisition board based on ARM electro-hydraulic servo valve
CN105840582A (en) * 2016-04-27 2016-08-10 兰州元创机电科技有限公司 Portable monitoring device of hydraulic compensation circuit and adjusting and setting method
CN106773649A (en) * 2016-12-21 2017-05-31 成都千嘉科技有限公司 A kind of automatic control valve for gaseous fuel door intelligent control method based on PSO pid algorithms

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Granted publication date: 20110615

Termination date: 20111130