CN109975004A - A kind of wind electricity blade biaxial fatigue test platform PLC control system - Google Patents
A kind of wind electricity blade biaxial fatigue test platform PLC control system Download PDFInfo
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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
- G01M13/00—Testing of machine parts
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- 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
- G05B19/058—Safety, monitoring
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- 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
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
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Abstract
A kind of wind electricity blade biaxial fatigue test platform PLC control system, including PLC controller, displacement sensor, position switch, vibration-exciting hydraulic cylinder, proportional servo valve, servo valve amplifier and hydraulic mechanism；The output end of servo valve amplifier connection PLC controller；Displacement sensor connects the input terminal of PLC controller with position switch；Proportional servo valve connects servo valve amplifier and vibration-exciting hydraulic cylinder, and vibration-exciting hydraulic cylinder is arranged four, and on the four direction of blade, vibration-exciting hydraulic cylinder is oppositely arranged two-by-two；Vibration-exciting hydraulic cylinder is used to wave direction to blade and blade edgewise direction applies the load of arbitrary size；Position switch sensor is used to measure the initial origin position of vibration-exciting hydraulic cylinder, and displacement sensor is used to feed back the reality output displacement of vibration-exciting hydraulic cylinder, velocity and acceleration；PLC controller changes the flow of vibration-exciting hydraulic cylinder, realizes that wind electricity blade waves any load of direction and edgewise direction, realizes the purpose of control wind electricity blade biaxial fatigue test platform comprehensively.
Description
Technical field
The invention belongs to manufacturing technology fields, relate generally to a kind of hydraulic control system, and specifically a kind of wind electricity blade is double
Axis fatigue test board PLC control system.
Background technique
With various countries' energy development low-carbon increasingly, the accounting of clean energy resource power generation goes up year by year, specific to China's national situation,
Wind-powered electricity generation has become the main direction of development of cleaning electric energy.As Wind Power Generation Industry rapidly develops, the dimensions length of wind electricity blade reaches
80 meters even 100 meters, the safety problem during being on active service protrudes year by year.In order to analyze and predict the tired of wind electricity blade before serving
Labor characteristic needs to carry out wind electricity blade fatigue test.However currently, wind electricity blade fatigue loading mode is mainly uniaxial loading,
Its control system can only also meet the control of unidirectional loading device, for example, patent CN202710300U disclose it is a kind of for megawatt
The fatigue experimental device of class wind turbine blade is, it can be achieved that the control that one direction loads.In recent years, by numerous studies, people
Gradually, it is realized that Biaxial stress is in terms of simulating the practical military service operating condition of wind electricity blade have relative to uniaxial loading it is absolute excellent
Gesture, so wind electricity blade biaxial fatigue test platform is developed into hot spot；But also lacks realize wind electricity blade Biaxial Fatigue at present
The accuracy-control system of testing stand.
Summary of the invention
The purpose of the present invention is to provide a kind of wind electricity blade biaxial fatigue test platform PLC control systems, realize wind-powered electricity generation leaf
Piece waves any load in direction (perpendicular to the direction of leaf chord length) and edgewise direction (direction for being parallel to leaf chord length), most
Achieve the purpose that control wind electricity blade biaxial fatigue test platform comprehensively eventually.
To achieve the above object, the technical scheme adopted by the invention is as follows: a kind of wind electricity blade biaxial fatigue test platform PLC
Control system, including PLC controller, displacement sensor, position switch, vibration-exciting hydraulic cylinder, proportional servo valve, servo valve amplifier
And the hydraulic mechanism for driving vibration-exciting hydraulic cylinder；The output end of servo valve amplifier connection PLC controller；Displacement sensor
The input terminal of PLC controller is connected with position switch；Proportional servo valve connects servo valve amplifier, and proportional servo valve connects exciting
Hydraulic cylinder, there are four vibration-exciting hydraulic cylinder settings, is separately positioned on the four direction of blade, vibration-exciting hydraulic cylinder to blade for waving
Direction and blade edgewise direction apply the load of arbitrary size；Position switch sensor is for measuring the initial of vibration-exciting hydraulic cylinder
Origin position, displacement sensor are used to feed back the reality output displacement of vibration-exciting hydraulic cylinder, velocity and acceleration.
The output end of each vibration-exciting hydraulic cylinder of displacement sensor or the junction of hydraulic cylinder output end and blade.
The output end of vibration-exciting hydraulic cylinder and blade junction are provided with strain gauge.
Vibration-exciting hydraulic cylinder includes the first vibration-exciting hydraulic cylinder, the second vibration-exciting hydraulic cylinder, third vibration-exciting hydraulic cylinder and the 4th exciting
Hydraulic cylinder；
First displacement sensor, second displacement sensor, third displacement sensor and the 4th displacement sensor 4 respectively correspond
Monitor the reality output position of the first vibration-exciting hydraulic cylinder, the second vibration-exciting hydraulic cylinder, third vibration-exciting hydraulic cylinder and the 4th vibration-exciting hydraulic cylinder
It moves, velocity and acceleration；
First position switch sensor SQ1, second position switch sensor SQ2, the third place switch sensor SQ3 and
Four position switch sensor SQ4 respectively correspond monitoring and respectively correspond monitoring the first vibration-exciting hydraulic cylinder, the second vibration-exciting hydraulic cylinder, third
The displacement of vibration-exciting hydraulic cylinder and the 4th vibration-exciting hydraulic cylinder output end.
Hydraulic mechanism includes that oil pump motor, fuel tank, proportional amplifier, pressure proportioning valve, pressure sensor and temperature pass
Sensor；Oil pump motor connects PLC controller, and pressure sensor is used to monitor the pressure of oil pump motor, and temperature sensor is for supervising
Tank temperature is surveyed, proportional amplifier connects PLC controller and pressure proportioning valve, and pressure proportioning valve connects fuel tank, proportional amplifier
Connect PLC controller.
Proportional servo valve connects pressure proportioning valve.
Pressure sensor, temperature transmitter and proportional amplifier are connect with PLC controller by modulus module, servo valve
Amplifier is connect by digital module with PLC controller.
Further include power phase protector, the differential pressure transmitter device of blocking alarm, the normally open contactor of oil pump overload, in oil pump
Between relay KA1, the intermediate contact-relay KA2 of radiator fan, proportioning valve enable intermediate relay KA3；PLC controller it is defeated
Enter the normally open contactor of end connection oil pump overload, the differential pressure transmitter device of power phase protector and blocking alarm；PLC controller
Output end is connected to the enabled intermediate relay of oil pump intermediate relay KA1, the intermediate contact-relay KA2 of radiator fan, proportioning valve
Device KA3, spare intermediate contactor KA4.
PLC controller is connected with the human-computer interaction device for being manipulated and being shown.
Control effect: displacement sensor measures the actual displacement of hydraulic cylinder, velocity and acceleration；Pass through four position switch point
Not Gan Ying four initial origin positions of vibration-exciting hydraulic cylinder, four displacement sensors measure the actual bit of four vibration-exciting hydraulic cylinders respectively
It moves, velocity and acceleration, it is hydraulic to change exciting that PLC controller control servo ratio amplifier adjusts four proportional servo valves
The flow of cylinder realizes that wind electricity blade waves any load of direction and edgewise direction；I.e. perpendicular to the direction peace of leaf chord length
Row is in any loaded load in the direction of leaf chord length；PLC controller controls servo ratio amplifier, so as to adjust proportional servo
Valve, and then change vibration-exciting hydraulic cylinder flow, final realize wave moving synchronously for direction and edgewise direction vibration-exciting hydraulic cylinder.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention
Fig. 2 is hardware structure diagram of the invention
Fig. 3 is power electrical schematic diagram of the invention
Fig. 4 is the wiring diagram of PLC controller in Fig. 2
Fig. 5 is the wiring diagram of modulus module in Fig. 2
Fig. 6 is the wiring diagram of digital module in Fig. 2
Fig. 7 is the wiring diagram of proportional amplifier in Fig. 2
Fig. 8 is the wiring diagram of servo amplifier 1 in Fig. 2
Fig. 9 is the wiring diagram of servo amplifier 2 in Fig. 2
Figure 10 is the wiring diagram of servo amplifier 3 in Fig. 2
Figure 11 is the wiring diagram of servo amplifier 4 in Fig. 2
Specific embodiment
Below in conjunction with attached drawing and specific implementation method, the present invention will be further described in detail.
As shown in Figure 1, a kind of wind electricity blade biaxial fatigue test platform PLC control system, including PLC controller, displacement pass
Sensor, position switch, vibration-exciting hydraulic cylinder, proportional servo valve, servo valve amplifier and for driving the hydraulic of vibration-exciting hydraulic cylinder
Mechanism；The output end of servo valve amplifier connection PLC controller；Displacement sensor connects the defeated of PLC controller with position switch
Enter end；Proportional servo valve connects servo valve amplifier, and proportional servo valve connects vibration-exciting hydraulic cylinder, and vibration-exciting hydraulic cylinder is provided with four
It is a, it is separately positioned on the four direction of blade, vibration-exciting hydraulic cylinder is used to wave direction to blade and blade edgewise direction applies
The load of arbitrary size；Position switch sensor is used to measure the initial origin position of vibration-exciting hydraulic cylinder, and displacement sensor is used for
Feed back reality output displacement, the velocity and acceleration of vibration-exciting hydraulic cylinder；The output end of each vibration-exciting hydraulic cylinder of displacement sensor or
The junction of hydraulic cylinder output end and blade；Vibration-exciting hydraulic cylinder swashs including the first vibration-exciting hydraulic cylinder, the second vibration-exciting hydraulic cylinder, third
Shake hydraulic cylinder and the 4th vibration-exciting hydraulic cylinder；
First displacement sensor, second displacement sensor, third displacement sensor and the 4th displacement sensor 4 respectively correspond
Monitor the reality output position of the first vibration-exciting hydraulic cylinder, the second vibration-exciting hydraulic cylinder, third vibration-exciting hydraulic cylinder and the 4th vibration-exciting hydraulic cylinder
It moves, velocity and acceleration；
First position switch sensor SQ1, second position switch sensor SQ2, the third place switch sensor SQ3 and
Four position switch sensor SQ4 respectively correspond monitoring and respectively correspond monitoring the first vibration-exciting hydraulic cylinder, the second vibration-exciting hydraulic cylinder, third
The displacement of vibration-exciting hydraulic cylinder and the 4th vibration-exciting hydraulic cylinder output end.
The output end of vibration-exciting hydraulic cylinder and blade junction are provided with strain gauge.
Hydraulic mechanism includes that oil pump motor, fuel tank, proportional amplifier, pressure proportioning valve, pressure sensor and temperature pass
Sensor；Oil pump motor connects PLC controller, and pressure sensor is used to monitor the pressure of oil pump motor, and temperature sensor is for supervising
Tank temperature is surveyed, proportional amplifier connects PLC controller and pressure proportioning valve, and pressure proportioning valve connects fuel tank, proportional amplifier
Connect PLC controller；Proportional servo valve connects pressure proportioning valve.
Pressure sensor, temperature transmitter and proportional amplifier are connect with PLC controller by modulus module, servo valve
Amplifier is connect by digital module with PLC controller.
Heretofore described PLC controller uses Delta DVP32EHPLC.
It is normally opened that position switch according to the present invention is all made of LJ12A3-4-Z/B NPN.
Displacement sensor according to the present invention is all made of KA-300/5u/220mm/3m/TTL.
Proportional servo valve according to the present invention uses DLHZ0-T-040-L7131 ATOS.
PLC controller based on the feedback signal, by digital module, controls a servo valve amplifier and the amplification of third servo
Device, and then the first proportional servo valve and third proportional servo valve events are controlled, to make the first vibration-exciting hydraulic cylinder and third exciting
Direction load is waved in hydraulic cylinder synchronous movement, realization.Similarly, PLC controller based on the feedback signal, passes through digital module, control
Second servo valve amplifier and the 4th servo amplifier, and then the second proportional servo valve and the 4th proportional servo valve events are controlled,
To make the second vibration-exciting hydraulic cylinder and the 4th vibration-exciting hydraulic cylinder 4 move synchronously, edgewise direction load is realized.
It is passed by position switch sensor SQ1, position switch sensor SQ2, position switch sensor SQ3 and position switch
Sensor SQ4 positions the initial origin position of vibration-exciting hydraulic cylinder 1, vibration-exciting hydraulic cylinder 2, vibration-exciting hydraulic cylinder 3 and vibration-exciting hydraulic cylinder 4 respectively
It sets, vibration-exciting hydraulic cylinder is then fed back by displacement sensor 1, displacement sensor 2, displacement sensor 3 and displacement sensor 4 respectively
1, vibration-exciting hydraulic cylinder 2, vibration-exciting hydraulic cylinder 3 and the displacement of vibration-exciting hydraulic cylinder 4, velocity and acceleration, PLC system utilize above-mentioned feedback letter
After number processing, control servo valve amplifier 1, servo valve amplifier 2, servo valve amplifier 3 and servo valve amplifier 4.Above-mentioned four
A servo valve amplifier controls proportional servo valve 1, proportional servo valve 2, proportional servo valve 4 and proportional servo valve 5 respectively, to make
Vibration-exciting hydraulic cylinder 1 and the realization of vibration-exciting hydraulic cylinder 3 move synchronously, and vibration-exciting hydraulic cylinder 2 and vibration-exciting hydraulic cylinder 4 is made to move synchronously
As depicted in figs. 1 and 2, a kind of wind electricity blade biaxial fatigue test platform PLC control system packet described in present embodiment
Include vibration-exciting hydraulic cylinder 1, vibration-exciting hydraulic cylinder 2, vibration-exciting hydraulic cylinder 3 and vibration-exciting hydraulic cylinder 4, displacement sensor 1, displacement sensor 2, position
Displacement sensor 3, position switch sensor SQ1, position switch sensor SQ2, position switch sensor SQ3, position switch sensing
Device SQ4, proportional amplifier, pressure proportioning valve, servo valve amplifier 1, servo valve amplifier 2, servo valve amplifier 3, servo valve
Amplifier 4, proportional servo valve 1, proportional servo valve 2, proportional servo valve 3, proportional servo valve 4, power phase protector, blocking report
The enabled intermediate relay KA3 of contactor KA1, oil pump intermediate relay KA1, proportioning valve of alert differential pressure transmitter device, oil pump overload,
Pressure sensor, temperature sensor, digital module, modulus module, power module, PLC and human-computer interaction interface HMI.
Such as Fig. 3,220V alternating current through circuit breaker Q F2, after flow through power switch SA, SA is normal open switch, hand when starting
Dynamic closure.Power module input terminal L is connect with SA, and input terminal N is connected with the N of 220V alternating current, exports DC24V direct current,
Reserved 0V, 24V terminals.Human machine interface is powered by Switching Power Supply.Power phase protector is a kind of control relay,
Terminal 8 is connected with scram button SB, accesses PLC terminal X3 in Fig. 4.Power phase protector can judge automatically phase sequence, when three
Mutually when the phase sequence and the phase sequence difference of phase sequence relay input terminal of electricity, the input terminal X3 of PLC controller is become from low level
High level, output end Y0 export a high level, and the coil of relay KA1 is no longer attracted, and the contact of relay KA1 disconnects, and connect
The normally opened contact of the coil losing electricity of tentaculum KM1, contactor KM1 disconnects, oil pump motor M3 stalling.
If the input terminal L of Fig. 4, PLC controller are connect with SA, input terminal N is connected with the N of 220V alternating current, to make
PLC is worked normally under 220V AC voltage；The input terminated line of PLC controller illustrates: the end the PE ground connection of PLC controller；24V
Access input public terminal S/S；X0 the and X1 input terminal of the access PLC controller of displacement sensor 1；Position switch sensor SQ1
Access the input terminal X2 of PLC controller；In conjunction with Fig. 3, power phase protector accesses PLC controller after connecting with scram button SB
Input terminal X3；The input terminal X4 and X5 of the access PLC controller of displacement sensor 2；Position switch sensor SQ2 accesses PLC control
The input terminal X6 of device processed；The input terminal X7 of switch one end access PLC controller of differential pressure transmitter device；Displacement sensor 3 accesses PLC
The input terminal X10 and X11 of controller；The input terminal X12 of position switch sensor SQ3 access PLC controller；Displacement sensor 4
Access the input terminal X14 and X15 of PLC controller；The input terminal X16 of position switch sensor SQ4 access PLC controller；With FR1
The input terminal X17 of the normally opened contact access PLC controller of linkage.
The output end wiring of PLC controller is illustrated: as shown in figure 4, the output end C0 of PLC controller connects 0V, PLC control
The coil of the output end Y0 of device processed then relay KA1, Y0 and C0 constitute a circuit, and relay KA1 is controlled in circuit
Element.It links in conjunction with Fig. 3, relay KA1 and breaker FR1, when oil pump works normally, output end Y0 exports a low electricity
Flat, the coil of relay KA1 is attracted, the contact closure of relay KA1, and the coil of contactor KM1 obtains electric, and contactor KM1's is normal
Open contact closure, oil pump feed.When oil pump overload, electrothermal relay FR1 temperature distortion, the normally opened contact linkage of FR1 and X17,
The normally-closed contact for being closed the normally opened contact of X17, while meeting 24V1 disconnects, and the input terminal X17 of PLC controller is connected to 0V,
Sequential operation through PLC controller, output end Y0 one high level of output, the coil power down of relay KA1, contactor KM1's
The contact of coil power down, contactor KM1 disconnects, and oil pump motor M3 stops working, to play the role of overload protection.
If Fig. 3 and Fig. 4, PLC controller output end Y1 are connected to the coil of relay KA2, Y1 and C0 constitute a circuit,
Relay KA2 is the controlled element in circuit, and the contact of relay KA2 is connected with the motor M1 of radiator fan.PLC controller is defeated
Outlet Y1 exports a low level, and the coil of relay KA2 is powered, the contact closure of relay KA2, the motor M1 of radiator fan
Work is radiated for hydraulic oil.
The coil of the output end Y2 connection relay KA3 of PLC controller, Y2 and C0 constitute a circuit, and relay KA3 is
Controlled element in circuit.Output end Y2 exports a low level, and the coil of relay KA3 is powered, and the contact of relay KA3 is closed
It closes, in conjunction with Fig. 7, Fig. 8, Fig. 9, Figure 10 and Figure 11, proportional amplifier, servo valve amplifier 1, servo valve amplifier 2, servo amplification
The terminal EN of device 3 and servo valve amplifier 4 meets 24V, and proportional amplifier works normally.When the hydraulic system is working, in filter
Filter core gradually blocked because of the pollutant in intercepting system, the pressure of oil inlet and outlet generates cartridge pressure loss.Work as pressure difference
When increasing to the setting of signalling generator, differential pressure transmitter device can automatically become low level, and the input terminal X7 of PLC controller also becomes
Low level, then the output end Y2 of PLC controller exports a high level, the coil power down of relay KA3, the touching of relay KA3
Point disconnects, and EN becomes low level, proportional amplifier, servo valve amplifier 1, servo valve amplifier 2, servo amplifier 3 and servo
Valve amplifier 4 stops working, while output terminal Y0 exports a high level, the coil power down of relay KA1, contactor KM1
Coil power down, the contact of contactor KM1 disconnects, and oil pump motor M3 stops working.
The output end C1 of PLC controller meets 0V.Output end Y3 is connected to the coil of relay KA4, and Y3 and C1 constitute one
Circuit, relay KA4 are the controlled elements in circuit.Relay KA4 is spare.
As shown in Fig. 2, Fig. 5 and Fig. 7, the modulus module selects DVP06XA model, the power supply of DC24V Switching Power Supply.Mould
Digital-to-analogue block by the analog signal processing from pressure sensor and temperature sensor at digital signal, after send PLC to, by PLC
Operation is carried out, operation result is exported in the form of voltage signal by modulus module.Proportional amplifier receives from modulus module
Voltage signal calibrates the adjustment amount of the pressure proportioning valve in Fig. 1, puts adjustment amount and ratio by its internal operation amplifier
The input signal of big device is corresponding, controls pressure proportioning valve relay coil YV1, and then adjust the spool position of pressure proportioning valve
It sets, thus change the dredge oil amount of pressure proportioning valve, the final constant pressure pump oil for realizing oil pump motor in Fig. 1.
As shown in Figure 1, Figure 2, shown in Fig. 6, Fig. 8, Fig. 9, Figure 10 and Figure 11, the digital module selects DVP04DA model,
DC24 Switching Power Supply power supply, digital module receive the signal from PLC controller, and by signal pass to servo valve amplifier 1,
Servo valve amplifier 2, servo valve amplifier 3 and servo valve amplifier 4；Servo valve amplifier 1, servo valve amplifier 2, servo valve
Amplifier 3 and servo valve amplifier 4 integrate input signal and feedback signal and amplified, and the line of servo valve 1 is controlled
The coil motion of circle, the coil of servo valve 2, the coil of servo valve 3 and servo valve 4, and then adjustment proportional servo valve 1, ratio are watched
The spool position of valve 2, proportional servo valve 3 and proportional servo valve 4 is taken, to change vibration-exciting hydraulic cylinder 1, vibration-exciting hydraulic cylinder 2, exciting
The flow of hydraulic cylinder 3 and vibration-exciting hydraulic cylinder 4 meets various exciting requirements.
As shown in figure 8, EN pin connects high level, servo valve amplifier 1 is worked normally, and the modulus module in Fig. 6 is by drawing
Foot A1+ and A1- constitute a circuit, and control signal is inputted servo amplifier 1；Servo amplifier by signal pins S1+ and
S1- constitutes a circuit, changes positive and negative, the control valve core of servo valve displacement of signal in circuit；Pin REF1+ and REF1- are constituted
One circuit, pin FB1+ and FB1- constitute a circuit, by valve core of servo valve position feedback to servo amplifier.Fig. 9, Figure 10
It is identical with Fig. 8 with the mode of connection of servo amplifier each in Figure 11.
Empty load of motor start button and empty load of motor stop botton in human-computer interaction interface may be implemented in zero load
In the case of start and stop oil pump motor M3；The ramp time of each vibration-exciting hydraulic cylinder is inputted in human-computer interaction interface, system Auto-matching is each
The flow of vibration-exciting hydraulic cylinder inputs；The quality of each vibration-exciting hydraulic cylinder is inputted, system calculates the force value of each vibration-exciting hydraulic cylinder automatically.
During test, system can automatically record and show the vibration number of each vibration-exciting hydraulic cylinder；Start survey after setting above-mentioned parameter
Examination, testing stand carry out test according to the parameter of setting.
PLC controller can control 3 synchronous vibration of vibration-exciting hydraulic cylinder 1 and vibration-exciting hydraulic cylinder, can control vibration-exciting hydraulic cylinder 2
With 4 synchronous vibration of vibration-exciting hydraulic cylinder.
A kind of wind electricity blade fatigue life test stand specific PLC control system working principle of the present invention are as follows: pass through four positions
It sets switch and is respectively induced four initial origin positions of vibration-exciting hydraulic cylinder, four displacement sensors measure four vibration-exciting hydraulic cylinders respectively
Actual displacement, velocity and acceleration, PLC control servo ratio amplifier adjusts four proportional servo valves to change exciting liquid
The flow of cylinder pressure, and then realize that wind electricity blade waves direction (perpendicular to the direction of leaf chord length) and edgewise direction (is parallel to leaf
The direction of piece chord length) any load, be finally reached comprehensively control wind electricity blade biaxial fatigue test platform purpose.
Claims (10)
1. a kind of wind electricity blade biaxial fatigue test platform PLC control system, which is characterized in that including PLC controller, displacement sensing
Device, position switch, vibration-exciting hydraulic cylinder, proportional servo valve, servo valve amplifier and the hydraulic press for driving vibration-exciting hydraulic cylinder
Structure；The output end of servo valve amplifier connection PLC controller；Displacement sensor connects the input of PLC controller with position switch
End；Proportional servo valve connects servo valve amplifier, and proportional servo valve connects vibration-exciting hydraulic cylinder, and there are four vibration-exciting hydraulic cylinder settings,
It is separately positioned on the four direction of blade, on the four direction of blade, vibration-exciting hydraulic cylinder is oppositely arranged two-by-two；Vibration-exciting hydraulic cylinder
For waving the load in direction and blade edgewise direction application arbitrary size to blade；Position switch sensor is sharp for measuring
The initial origin position of vibration hydraulic cylinder, displacement sensor are used to feed back reality output displacement, speed and the acceleration of vibration-exciting hydraulic cylinder
Degree.
2. wind electricity blade biaxial fatigue test platform PLC control system according to claim 1, which is characterized in that displacement passes
The output end of each vibration-exciting hydraulic cylinder of sensor or the junction of hydraulic cylinder output end and blade.
3. wind electricity blade biaxial fatigue test platform PLC control system according to claim 1, which is characterized in that exciting liquid
The output end of cylinder pressure and blade junction are provided with strain gauge.
4. wind electricity blade biaxial fatigue test platform PLC control system according to claim 1, which is characterized in that exciting liquid
Cylinder pressure includes the first vibration-exciting hydraulic cylinder, the second vibration-exciting hydraulic cylinder, third vibration-exciting hydraulic cylinder and the 4th vibration-exciting hydraulic cylinder；
First displacement sensor, second displacement sensor, third displacement sensor and the 4th displacement sensor 4 respectively correspond monitoring
First vibration-exciting hydraulic cylinder, the second vibration-exciting hydraulic cylinder, third vibration-exciting hydraulic cylinder and the reality output displacement of the 4th vibration-exciting hydraulic cylinder, speed
Degree and acceleration；
First position switch sensor SQ1, second position switch sensor SQ2, the third place switch sensor SQ3 and the 4th
Set switch sensor SQ4 respectively correspond monitoring respectively correspond monitoring the first vibration-exciting hydraulic cylinder, the second vibration-exciting hydraulic cylinder, third exciting
The displacement of hydraulic cylinder and the 4th vibration-exciting hydraulic cylinder output end.
5. wind electricity blade biaxial fatigue test platform PLC control system according to claim 1, which is characterized in that hydraulic press
Structure includes oil pump motor, fuel tank, proportional amplifier, pressure proportioning valve, pressure sensor and temperature sensor；Oil pump motor connects
PLC controller is connect, pressure sensor is used to monitor the pressure of oil pump motor, and temperature sensor is for monitoring tank temperature, ratio
Amplifier connects PLC controller and pressure proportioning valve, and pressure proportioning valve connects fuel tank, and proportional amplifier connects PLC controller.
6. wind electricity blade biaxial fatigue test platform PLC control system according to claim 5, which is characterized in that ratio is watched
Take valve connection pressure proportioning valve.
7. wind electricity blade biaxial fatigue test platform PLC control system according to claim 5, which is characterized in that pressure passes
Sensor, temperature transmitter and proportional amplifier are connect with PLC controller by modulus module, and servo valve amplifier passes through digital-to-analogue
Module is connect with PLC controller.
8. wind electricity blade biaxial fatigue test platform PLC control system according to claim 5, which is characterized in that further include
Power phase protector, the normally open contactor of oil pump overload, oil pump intermediate relay KA1, dissipates the differential pressure transmitter device of blocking alarm
The intermediate contact-relay KA2 and proportioning valve of Hot-air fan enable intermediate relay KA3；The input terminal of PLC controller connects oil
Pump the normally open contactor of overload, the differential pressure transmitter device of power phase protector and blocking alarm；The output end of PLC controller connects
Oil pump intermediate relay KA1, the intermediate contact-relay KA2 of radiator fan, proportioning valve enable intermediate relay KA3 and spare
Intermediate contactor KA4.
9. wind electricity blade biaxial fatigue test platform PLC control system according to claim 1, which is characterized in that PLC control
Device is connected with the human-computer interaction device for being manipulated and being shown.
10. wind electricity blade biaxial fatigue test platform PLC control system according to claim 1, which is characterized in that PLC control
Device processed uses Delta DVP32EHPLC.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529442A (en) * | 2019-08-26 | 2019-12-03 | 哈尔滨工程大学 | Hydraulic system matched with piston machine fatigue test board |
| CN112872823A (en) * | 2021-03-08 | 2021-06-01 | 潍坊科技学院 | Industrial construction electric control system for leveling, length-fixing and cutting of thin plate |
| CN113389772A (en) * | 2021-06-23 | 2021-09-14 | 华南农业大学 | Agricultural small-size hydraulic pressure station control system |
| CN114323610A (en) * | 2021-12-20 | 2022-04-12 | 武汉理工大学 | Multi-point double-freedom-degree fatigue testing device and control method for large offshore wind power blade |
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| CN112872823A (en) * | 2021-03-08 | 2021-06-01 | 潍坊科技学院 | Industrial construction electric control system for leveling, length-fixing and cutting of thin plate |
| CN113389772A (en) * | 2021-06-23 | 2021-09-14 | 华南农业大学 | Agricultural small-size hydraulic pressure station control system |
| CN114323610A (en) * | 2021-12-20 | 2022-04-12 | 武汉理工大学 | Multi-point double-freedom-degree fatigue testing device and control method for large offshore wind power blade |
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Application publication date: 20190705 |