CN104965460B - Fatigue testing equipment and its control system - Google Patents
Fatigue testing equipment and its control system Download PDFInfo
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- CN104965460B CN104965460B CN201510386730.4A CN201510386730A CN104965460B CN 104965460 B CN104965460 B CN 104965460B CN 201510386730 A CN201510386730 A CN 201510386730A CN 104965460 B CN104965460 B CN 104965460B
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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
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0426—Programming the control sequence
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Abstract
Present disclose provides a kind of fatigue testing equipment and its control system.The control system includes：One PLC, is connected with drive mechanism, for providing a control signal and for exporting a test result to the drive mechanism；One interactive module, it is connected with the PLC, for receiving the parameter of input and exporting to the PLC and for receiving and presenting the test result；One sensing module, it is connected with the PLC and fatigue testing equipment, is tested the parameter of test piece in the fatigue testing equipment for gathering and inputs to the PLC.
Description
Technical field
This disclosure relates to technical field of automatic control, and in particular to a kind of fatigue testing equipment and its control system.
Background technology
Fluid sealant is that one kind deforms with sealing surface shape, is not easy to trickle, the encapsulant for having certain caking property, and it is to use
To fill configuration gap, to play the adhesive of sealing function.Fluid sealant has anti-leak, waterproof, against shock and sound insulation, heat-insulated
Deng effect.At present, fluid sealant has been widely used for the industries such as construction industry, packaging industry, automobile making and electronic manufacture.So
And no matter applied to which kind of industry, before the fluid sealant of different batches comes into operation, it is both needed to carrying out adhesive property test, tired
The test event such as labor test and extension test.The only batch products of test passes, it can just come into operation.
Seal other test events such as gluing knot test, it is only necessary to can just complete by simple fixture or equipment.It is and close
Sealing testing fatigue, extension test are then complex.For example, it is desired to which fluid sealant is fabricated into Special test, examination is fixed with fixture
Piece upper and lower ends, it is divided into four-stage by fluid sealant testing standard requirement, each stage is divided into low hold pulling force, during low hold
Between, height is kept for pulling force and high retention time, and thousands of round tension tests are repeated in each stage, to carry out tired survey
Examination.The test piece being subjected to after testing fatigue, then the one direction tension test of constant speedpump is carried out, untill test piece is broken, with
Carry out extension test.Value of thrust suffered by test piece and the shift value of test piece during whole extension test, will reach relevant criterion.
Fluid sealant testing fatigue and extension test in conventional art are completed by two different equipment.Test equipment
Control system be also classified into two types, i.e., using single-chip microcomputer as the servo-control system of platform and using import nonshared control unit to be flat
The servo-control system of platform, and both servo control platforms will finally be developed by means of programming tools such as VB or C++
Position machine software.
Servo-control system using single-chip microcomputer as platform, because the data processing digit of single-chip microcomputer is limited in one's ability, it is impossible to
Accomplish that internal calculation machinery transmission position is moved, it is also necessary to be equipped with position-measurement device, have impact on the precision of displacement measurement；And it is most
The shortcomings that big is that SCM Based system belongs to dedicated system, can not extend systemic-function, can not easily change system
Function.And the horizontal limitation of research staff is limited by, the equipment performance made is different.It is flat using import nonshared control unit
The servo-control system of platform, Technical comparing is ripe, can go out machine driving displacement in controller internal calculation.But it is constrained to control
The application method of device processed, equipment is when testing the fluid sealant of different batches, it is necessary to which special-purpose software adjusts pid parameter, and user makes
Use very inconvenient, while import nonshared control unit is expensive.In addition, the data monitoring platform of above two control system
It is required for being programmed using VB programming tools, the construction cycle is slow, and software systems renewal is difficult.
Therefore, a kind of control system of new fatigue testing equipment urgently provides.
The content of the invention
For some or all of problem of the prior art, the disclosure provides a kind of fatigue testing equipment and its control system
System, at least overcoming one or more problems caused by the limitation of correlation technique and defect to a certain extent.
Other characteristics and advantage of the disclosure will be apparent from by following detailed description, or partially by the disclosure
Practice and acquistion.
According to the first aspect of the disclosure, there is provided a kind of control system of fatigue testing equipment, applied to a testing fatigue
Equipment；The fatigue testing equipment comprises at least a drive mechanism；The control system includes：
One PLC, it is connected with the drive mechanism, for providing a control signal and use to the drive mechanism
In exporting a test result；
One interactive module, it is connected with the PLC, is controlled for receiving the parameter of input and exporting to the PLC
Device and for receiving and presenting the test result；
One sensing module, it is connected with the PLC and fatigue testing equipment, is set for gathering the testing fatigue
The parameter of test piece is tested in standby and is inputted to the PLC.
In a kind of illustrative embodiments of the disclosure, the PLC includes：
One analog input unit, it is connected with the sensing module, for receiving and changing the sensing module output
Parameter signal；
One processor unit, it is connected with the analog input unit and input module, for receiving the input mould
The parameter signal and the output test result of block output；
One pulse output unit, it is connected with the drive mechanism and processor unit, for being carried to the drive mechanism
For the control signal；
One power subsystem, be connected with the analog input unit, processor unit and pulse output unit, for
The analog input unit, processor unit and pulse output unit power supply.
In a kind of illustrative embodiments of the disclosure, the interactive module includes a man-machine interface and/or an industry control
Machine.
In a kind of illustrative embodiments of the disclosure, the man-machine interface passes through a RS232 interface and the processing
Device unit connects；
The industrial computer is connected by an ethernet port with the processor unit.
In a kind of illustrative embodiments of the disclosure, the control system also includes：
One signal transmitting device；Connected between the sensing module and the analog input unit by the signal transmitting device
Connect.
In a kind of illustrative embodiments of the disclosure, the drive mechanism is a servo principal axis motor；The control
System also includes：
One main axle servo driver；Watched between the pulse output unit and the servo principal axis motor by the main shaft
Take driver connection.
In a kind of illustrative embodiments of the disclosure, in addition to a power supply protection circuit, connect with the power module
Connect；The power supply protection circuit includes：
One dc source, it is connected by a contactor with the PLC；
One earth leakage circuit-breaker, it is connected with the dc source and PLC.
In a kind of illustrative embodiments of the disclosure, the control system also includes：
One control cabinet, the PLC, signal transmitting device, man-machine interface, main axle servo driver and power supply protection
Circuit is integrated in the control cabinet.
In a kind of illustrative embodiments of the disclosure, the control panel of the control cabinet is provided with a switch element；
The switch element includes：
One emergency stop switch, it is connected with the pulse output unit；
One rising switch, it is connected with the pulse output unit；
One down switch, it is connected with the pulse output unit；
One power on switch, it is connected with the power supply protection circuit；
One power supply shutdown switch, is connected with the power supply protection circuit.
According to the second aspect of the disclosure, there is provided a kind of fatigue testing equipment, including any one above-mentioned control system.
In a kind of illustrative embodiments of the disclosure, the fatigue testing equipment includes：
One Load brackets, including bolster stake and the first crossbeam and second cross beam that are connected with the bolster stake；Described
At least one one crossbeam and the second cross beam are a moved cross beam；
One clamping device, it is connected respectively with the first crossbeam and second cross beam, for clamping the tested test piece；
The drive mechanism, it is connected between the moved cross beam by a transmission mechanism, in the control signal
The control lower driving moved cross beam motion；And
The control system, it is arranged at the Load brackets.
In a kind of illustrative embodiments of the disclosure, the transmission mechanism includes；
One leading screw, its first end are connected with the drive mechanism, and the second end is provided with one first screw thread；
One sleeve, its first end are provided with the second screw thread with first threaded adapter and are set in the leading screw second
End；Its second end is connected with the moved cross beam；
Multiple limit switches, it is respectively arranged on each extreme position of the sleeve movement and is connected with the control system.
In summary, in the fatigue testing equipment provided in disclosure illustrative embodiments and its control system, lead to
Cross and set PLC, interactive module and sensing module to realize the control to fatigue testing equipment.In addition, the control system
Unite simple in construction, easy to operate, software development cycle is short, and can be with lift-off seal glue test equipment in operation reliable
Property.
Brief description of the drawings
Its illustrative embodiments is described in detail by referring to accompanying drawing, the above and other feature and advantage of the disclosure will become
Obtain more obvious.
Fig. 1 is a kind of module diagram of fatigue testing equipment control system in disclosure example embodiment.
Fig. 2 is a kind of hardware connection diagram of fatigue testing equipment control system in disclosure example embodiment.
Fig. 3 is a kind of software module schematic diagram of fatigue testing equipment control system in disclosure example embodiment.
Embodiment
Illustrative embodiments are described more fully with referring now to accompanying drawing.However, illustrative embodiments can be with more
Kind form is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, these embodiments are provided so that this public affairs
Opening will fully and completely, and the design of illustrative embodiments is comprehensively communicated into those skilled in the art.The phase in figure
Same reference represents same or similar structure, thus will omit their detailed description.
In addition, described feature, structure or characteristic can be incorporated in one or more implementations in any suitable manner
In example.In the following description, there is provided many details fully understand so as to provide to embodiment of the disclosure.However,
It will be appreciated by persons skilled in the art that the technical scheme of the disclosure can be put into practice without one in the specific detail or more
It is more, or other modules, element etc. can be used.In other cases, known features are not shown in detail or describe, to avoid
The each side of the fuzzy disclosure.
A kind of control system of fatigue testing equipment is provide firstly in this illustrative embodiments.The film fatigue is surveyed
Examination equipment comprises at least a drive mechanism；In addition, it can also include Load brackets, clamping device and transmission mechanism etc..
Though illustrated in this illustrative embodiments by taking fluid sealant test equipment as an example, while it is readily appreciated that the control system
It can also be applied in other kinds of film fatigue testing equipment, for example, sheet rubber fatigue testing equipment etc., not with this
Institute's way of example is limited in illustrative embodiments.
With reference to shown in figure 1, the control system in this illustrative embodiments can include a PLC, an interaction
Module and a sensing module etc..The PLC is connected with the drive mechanism, for providing one to the drive mechanism
Control signal and for exporting a test result.The interactive module is connected with the PLC, for receiving input
Parameter is simultaneously exported to the PLC and for receiving and presenting the test result.The sensing module and the PLC
Controller and fatigue testing equipment connection, the parameter of test piece is tested in the fatigue testing equipment for gathering and is inputted to institute
State PLC.
PLC (Programmable Logic Controller) controller is a kind of substitution traditional relay control device
Exclusively for the electronic installation for the digital operation applied and designed in industrial settings.What PLC use can program
Memory, in operational orders such as its computing of storage inside execution logic, sequential operation, timing, counting and arithmetical operations, and
All types of machinery and production process can be controlled by digital or analog input or output.PLC possesses general
Property it is strong, easy to use, adaptation is wide, reliability is high, strong antijamming capability, be easy to learn and use, program can real time execution monitoring and
The characteristics of being easy to modifications and extensions.PCL controllers are at home and abroad widely used to steel, oil, chemical industry, electric power, vapour at present
The industries such as car, machine-building, but there is presently no apply in the test of the films such as fluid sealant.
With reference to shown in figure 2, in this illustrative embodiments, the PLC can include an analog input list
Member, a processor unit, a pulse output unit and a power subsystem, it can also be connect including ethernet port D12, RS232
The interface units such as mouth D11.Wherein described analog input unit is connected with the sensing module, for receiving and changing the sense
Survey the parameter signal of module output.The processor unit is connected with the analog input unit and input module, is used for
Receive the parameter signal and the output test result of the input module output.The pulse output unit and the driving
Mechanism and processor unit connection, for providing the control signal to the drive mechanism.The power subsystem with it is described
Analog input unit, processor unit and pulse output unit connection, for the analog input unit, processor
Unit and pulse output unit power supply.
Further, the control system can also include a power supply protection circuit.The power supply protection circuit with it is described
Power module connects.The power supply protection circuit can include a dc source, a contactor, an earth leakage circuit-breaker, a 24V
Dc source and a fuse base etc..The dc source can be connected by the contactor with the PLC,
The earth leakage circuit-breaker can be connected with the dc source and PLC.In this illustrative embodiments, the confession
It can be connected between electric protection circuit and the PLC in a manner of wire harness and connector etc..
In addition, be also equipped with the PLC PLC system software, the test sequence program bag based on PLC,
Testing fatigue automatic speed regulation software kit and extension test break the software units such as identification software bag.Such as：PLC system software can
To write PLC hardware memories when dispatching from the factory by PLC producers, its compiling and execution for being used to be responsible for user program, circulation time
Monitoring and the failure monitoring of PLC hardware, user only need to provided by interface do the setting of basic parameter.Based on the close of PLC
Sealing sequence programme software bundle can be aided between collection and conversion and the interactive module of the data of completion sensing module offer
Communication, the generation of control signal and system alarm signal, the calling etc. of subroutine function block bag.Fluid sealant testing fatigue is certainly
Dynamic speed governing software kit can be researched and developed for the particular country standard in fluid sealant test process.Fluid sealant testing fatigue is not
Need to change servo velocity, control system of the conventional equipment based on single-chip microcomputer or nonshared control unit, it is difficult to accomplish in real time with the stage
Dynamic changes servo velocity；Then can be based on the high-speed circulating scanning inside PLC, using real-time ratio in this illustrative embodiments
Compared with analysis, along with the powerful mathematical operation function in PLC inside, fluid sealant testing fatigue automatic speed regulating function is realized, makes test
Operation becomes simpler, and applicable surface is also more extensive.It can be based in PLC that fluid sealant extension test, which breaks identification software bag,
The exclusive data monitoring software bag of portion's high-speed data processing function exploitation.Fracture value is gathered in conventional art is supervised by analyze data
Control software obtains, but is influenceed by data collection cycle, and the value for often analyzing the value come and actual crack has necessarily
Error.It is most fast micro- up to 0.1 based on the high-velocity scanning channel function inside PLC, sweep speed in this illustrative embodiments
Second.The value obtained based on high-velocity scanning, it is in the past inaccessiable based on the control system of single-chip microcomputer and nonshared control unit institute.Institute
The accuracy for also causing extension test with the control system in this illustrative embodiments is improved.
In this illustrative embodiments, the interactive module can include a man-machine interface and an industrial computer.For example, institute
State man-machine interface to be connected with the processor unit by a RS232 interface D11, i.e., be between PLC and man-machine interface
RS232 standard communications modes；The industrial computer is connected by an ethernet port D12 with the processor unit, i.e., described PLC
It is the ethernet communication mode of ICP/IP protocol between controller and industrial computer, 100MB/ is reached using the speed of ethernet communication
S, data collection cycle most I shorten to 5ms.
In this illustrative embodiments, the man-machine interface can be that information friendship is interacted between control system and user
The medium changed, so as to realize the internal form of information and the mankind can receive conversion between form.Man-machine interface is in industry control row
Touch-screen is also referred to as in industry, is widely used in various automation equipments, possesses simple to operate, convenient, economic, practicality, can
To support multiple kinds, the advantages that PLC machine is extensive is corresponded to.Man-machine interface internal memory can be provided with man-machine interface
System software and human interface software.Industrial computer can be provided with test monitoring configuration software package to be independently installed, in it.
Fluid sealant sequence programme software bundle based on PLC, fluid sealant testing fatigue automatic speed regulation software kit, fluid sealant stretching
The internal memory that identification software bag may be mounted at PLC is broken in test, and the fluid sealant sequence programme software bundle based on PLC is close
Sealing testing fatigue automatic speed regulation software kit, fluid sealant extension test break identification software bag etc. and are responsible for and complete operation data turn
Change, sequence action output, the adjustment of adaptive product speed, instantaneously break the functions such as detection.Human interface software may be mounted at
Man-machine interface hardware memory, the Hard link between PLC and man-machine interface are RS232 standard communications modes.Man-machine interface
Software is responsible for and completion picture is shown and the execution of equipment operation function, and each stage parameter setting of fatigue test, tension test are drawn
The display of speed adjustment, unit exception alarm, real-time pull-up curve and real-time displacement curve is stretched, and is kept and PLC
Communication transmission.Configuration software refers to the special-purpose software of some data acquisitions and process control, and they are supervised in automatic control system
The platform and development environment of layer one-level are controlled, good user can be provided with flexile configuration mode (rather than programming mode)
Development interface, carries out the system integration, and configuration software has remote monitoring, data acquisition, data analysis, process control etc. powerful
Function.In this example embodiment, configuration software is arranged on industrial computer operating system, and configuration software can complete above-mentioned man-machine boundary
Thin-skinned all feature operations of part possessed.Configuration software is also equipped with the deposit of real-time testing data automated data library, historical data
The functions such as curve is shown, the output of real-time report output, history report, history alarm inquiry, report printing, remote computer inquiry.
In this illustrative embodiments, the sensing module can include a high precision pull sensor G11.The control
System can also include a signal transmitting device.Between the sensing module and the analog input unit, i.e., with it is described high-precision
It can be connected between degree pulling force sensor G11 by the signal transmitting device.In this illustrative embodiments, the signal transmitting
The effect of device can be to the high precision pull sensor G11 offer+5V dc sources, and receive the pulling force sensor
The voltage signal of G11 feedbacks, after inside chip and line transfer, then the signal of outputting standard 4-20mA signals is to described
The Analog input mModule of PLC.In this illustrative embodiments, between the PLC and signal converter with
And it can be connected between signal transmitting device and high precision pull sensor G11 in a manner of quick plug connector etc..
Drive mechanism in the fatigue testing equipment can be a servo principal axis motor M.And then this exemplary embodiment party
In formula, the control system can also include a main axle servo driver.The pulse output unit and servo principal axis electricity
It can be connected between machine M by the main axle servo driver.In this illustrative embodiments, the PLC with master
It can be connected between axle servo-driver in a manner of connector, main axle servo driver and spindle servo electric machine and main axle servo electricity
The modes such as quick plug connector can be used to connect between machine encoder.
For the ease of encapsulating and each part of the control system being protected, in this illustrative embodiments, institute
A control cabinet can also be included by stating control system.The PLC, signal transmitting device, main axle servo driver and power supply
Protection circuit can be integrated in the control cabinet, and the man-machine interface can then be integrated in the control panel of the control cabinet.
In addition, a switch element can be provided with the control panel of the control cabinet；The switch element can include an emergency stop switch
S11, a rising switch S12, a down switch S13, a power on switch S14 and a power supply shutdown switch S15.In addition, institute
The other assemblies such as power supply indicator L11 can also be set by stating the control panel of control cabinet.The emergency stop switch S11 and the pulse
Output unit connects.The rising switch S12 is connected with the pulse output unit.The down switch S13 and the pulse
Output unit connects.The power on switch S14 is connected with the power supply protection circuit.The power supply shutdown switch S15 with
The power supply protection circuit connection.The PLC and emergency stop switch S11, rising switch S12 and down switch S13 it
Between by can pass through screwless dedicated terminals row connection.The power supply protection circuit stops with power on switch S14, power supply
The row's connection of screwless dedicated terminals is again may be by between switch S15 and power supply indicator L11.
Further, a kind of fatigue testing equipment, including above-mentioned example embodiment party are additionally provided in this example embodiment
Any one control system in formula.For example, the fatigue testing equipment can include a Load brackets, a Load brackets, one
Clamping device, a drive mechanism described above and an above-mentioned control system.The Load brackets include bolster stake and with institute
The first crossbeam and second cross beam of bolster stake connection are stated, at least one the first crossbeam and the second cross beam are a movable transverse
Beam；In this example embodiment, illustrated so that the first crossbeam is moved cross beam as an example.The clamping device respectively with institute
First crossbeam and second cross beam connection are stated, for clamping the tested test piece.The drive mechanism and the moved cross beam it
Between connected by a transmission mechanism, for driving the moved cross beam to move under control signal control.The control system
System is arranged at the Load brackets.
In a kind of illustrative embodiments of the disclosure, the transmission mechanism can include a leading screw, a sleeve and
Multiple limit switches.The leading screw first end is connected with the drive mechanism, and the second end is provided with one first screw thread.The sleeve
One end is provided with the second screw thread with first threaded adapter and is set in the end of leading screw second；Its second end and the activity
Crossbeam connects.The multiple limit switch is respectively arranged on each extreme position of the sleeve movement and connected with the control system
Connect.For example, the multiple limit switch can include a upper limit protection switch S21 and once position limitation protection switch S22；Institute
State upper limit protection switch S21 may be mounted at the sleeve upper end and with the pulse output unit in above-mentioned PLC
Connection.The lower limit protection switch S22 may be mounted at the lower end of the sleeve and defeated with the pulse in above-mentioned PLC
Go out unit connection.It can be arranged and connected by screwless dedicated terminals between PLC and limit switch.
On the fatigue testing equipment in above-described embodiment, the concrete mode that wherein modules perform operation is having
Close and be described in detail in the embodiment of control system, explanation will be not set forth in detail herein.
In fatigue testing equipment and its control system in this example embodiment, each stage parameter setting of fatigue test,
Most five sections of parameter settings are supported, can all be set in above-mentioned man-machine interface or industrial computer.Every section can set low hold drawing
Power, low hold time, high holding pulling force, high retention time, rise time, return time and cycle-index etc..Tension test
Parameter setting have the setting of automatic clear pulling force point, test speed, ultimate tension protection, break identification absolute value setting etc..
Fatigue test operates and control：PLC controls servo principal axis driver by pulse mode, and servo principal axis drive
Dynamic device control spindle motor M, completes spindle motor M rotation control, and spindle motor M encoder is by the angle position of main shaft
Pulse sends servo principal axis driver to, servo principal axis driver by with receive to make comparisons from the pulse command of PLC,
Control spindle motor M is by PLC output pulse command operating in real time.When occur servomotor exception or drive system alarm
When, PLC can automatically detect servo-drive system failure, and be come out in man-machine interface and configuration software interface display.Watching
It is automatic in PLC according to the zero point of plant machinery system determination, and the speed reducing ratio of machinery during dress system operates
Calculate the position of current servo motion.
Extension test operates and control：Share a servo-drive system with fatigue test, equipment can not carry out simultaneously fatigue and
Tension test.Fatigue test is crossed in program, and servo-drive system receives PLC pulse command, is entered by the number and speed of setting
Row rotating cycle operation, until off-test.When extension test is carried out, servo-drive system only does constant motion to a direction,
Identification software bag more current value of thrust and upper moment value of thrust in real time are broken inside PLC, when servo-drive system displacement becomes
Change, and when tension variations value is less than setting value, you can judge that test piece has been broken, break recognizer and automatically save and show
Go out to break the value of thrust and shift value of moment, and configuration software is deposited in real time to the process values of fatigue and tension test.
The workflow of fatigue testing equipment in this example embodiment is briefly explained below：
(1) making of test piece：Professional standard is tested by fluid sealant, makes corresponding test piece.
Described test material is fluid sealant or rubber product, and fluid sealant need to be fabricated to special test piece shaping by national standard
Rear can be used for testing.
(2) fixation of test piece：Test piece is positioned on test equipment clamping device, and passes through man-machine interface or industrial computer
(rising switch and down switch button on control cabinet operational control panel can also be used) adjusts the elastic of test piece, makes at test piece
In with the seamless contact of clamping device, and not by axially or longitudinal direction power.
(4) current pulling force data is reset, current location clear 0.
(5) setting of each phase data of fatigue：The pulling force in each stage is set by fluid sealant industry testing standard, the time, is followed
Ring number and rising and falling time.
(6) testing fatigue is started：Point starts testing fatigue button, test equipment in man-machine interface or configuration software interface
Parameter automatic running can be specified according to test.Man-machine interface or configuration software interface can inquire about pulling force real-time curve, and position is real-time
Curve and tensioning positions displacement diagram etc..And configuration software meeting Auto-Memory preserves test data for consulting.
(7) testing fatigue terminates automatically.
(8) extension test parameter setting：The setting of setting stretching ginseng test automatic clear pulling force point, test speed, the limit are drawn
Try hard to keep shield, break the identification relevant parameter such as absolute value.
(9) extension test is started：Point starts extension test button, test equipment in man-machine interface or configuration software interface
Parameter automatic running can be specified according to test.
(10) extension test terminates：When test piece is broken, man-machine interface or configuration software show this extension test automatically
Breakpoint pulling force, and breakpoint location.Historical data in whole drawing process can be in configuration software database with a variety of methods
Inquiry, output.
In fluid sealant test equipment and its control system provided in this example embodiment, PLC is introduced,
Abandon and single-chip microcomputer or nonshared control unit acquisition control are relied in traditional design, computer carrys out the scheme of calculation process data.
In the traditional concept of people, PLC is still to be not suitable for doing largely calculating, data comparative analysis to work, and this is also tradition
Recognize a misunderstanding to PLC.PLC at this stage provide not only substantial amounts of mathematical operation instruction, data
Conversion instruction, also provide powerful functional block programing function.Language function block is programmed, and number is handled using class VB high-level language
According to computing, completely without looking into ladder diagram instruction manual.And after functional block generation, it can also be adjusted repeatedly in different engineerings
With, only need to give actual parameter.Fluid sealant testing fatigue automatic speed regulation software kit in this example embodiment, fluid sealant
Extension test breaks identification software bag and is namely based on the program bag that high-level programming language is created, can between different PLCs
To facilitate transplanting.High stability based on PLC, fluid sealant test equipment show extremely reliable in operation.Without conventional
Equipment made of host computer occur in control system computer glitch or caused by Software for Design problem it is tired hold together.Implemented based on this example
Reliable Design in mode, general test scene, if a large amount of monitoring datas need not be preserved, only rely on man-machine interface and
PLC software systems can also complete test request.
The disclosure is described by above-mentioned related embodiment, but above-described embodiment is only the example for implementing the disclosure.
It must be noted that the embodiment disclosed is not limiting as the scope of the present disclosure.On the contrary, do not depart from the disclosure spirit and
In the range of the change and retouching made, belong to the scope of patent protection of the disclosure.
Claims (12)
- A kind of 1. control system of fatigue testing equipment, applied to a fatigue testing equipment；The fatigue testing equipment at least wraps Include a drive mechanism；Characterized in that, the control system includes：One PLC, it is connected with the drive mechanism, for providing a control signal and for defeated to the drive mechanism Go out a test result；One interactive module, be connected with the PLC, for receive input parameter and export to the PLC with And for receiving and presenting the test result；One sensing module, including pulling force sensor, the sensing module connect with the PLC and fatigue testing equipment Connect, be tested the value of thrust of test piece in the fatigue testing equipment for gathering and input to the PLC；One encoder, it is connected with the drive mechanism, for measuring the angle position of the drive mechanism；One driving mechanisms control device, it is connected between the PLC and the drive mechanism and is connected with the encoder, The driving mechanisms control device is used for the angle position of comparison coder measurement and the control letter of the PLC received Number, control operating of the drive mechanism according to the control signal of the PLC；The PLC is additionally operable to compare current time value of thrust and upper moment value of thrust, and when drive mechanism displacement becomes Change but pulling force value changes are when being less than setting value, judge that the tested test piece has been pulled off, and automatically save and show when breaking The value of thrust and shift value at quarter.
- 2. control system according to claim 1, it is characterised in that the PLC includes：One analog input unit, it is connected with the sensing module, for receiving and changing the parameter of the sensing module output Signal；One processor unit, it is connected with the analog input unit and input module, it is defeated for receiving the input module The parameter signal and the output test result gone out；One pulse output unit, it is connected with the drive mechanism and processor unit, for providing institute to the drive mechanism State control signal；One power subsystem, it is connected with the analog input unit, processor unit and pulse output unit, for described Analog input unit, processor unit and pulse output unit power supply.
- 3. control system according to claim 2, it is characterised in that the interactive module include a man-machine interface and/or One industrial computer.
- 4. control system according to claim 3, it is characterised in that the man-machine interface passes through a RS232 interface and institute State processor unit connection；The industrial computer is connected by an ethernet port with the processor unit.
- 5. the control system according to claim 3 or 4, it is characterised in that the control system also includes：One signal transmitting device；Connected between the sensing module and the analog input unit by the signal transmitting device.
- 6. control system according to claim 5, it is characterised in that the drive mechanism is a servo principal axis motor；Institute Stating driving mechanisms control device is：One main axle servo driver；Driven between the pulse output unit and the servo principal axis motor by the main axle servo Dynamic device connection.
- 7. control system according to claim 6, it is characterised in that the control system also includes power supply protection electricity Road, it is connected with the power module；The power supply protection circuit includes：One dc source, it is connected by a contactor with the PLC；One earth leakage circuit-breaker, it is connected with the dc source and PLC.
- 8. control system according to claim 7, it is characterised in that the control system also includes：One control cabinet, the PLC, signal transmitting device, man-machine interface, main axle servo driver and power supply protection circuit It is integrated in the control cabinet.
- 9. control system according to claim 8, it is characterised in that the control panel of the control cabinet is provided with a switch Unit；The switch element includes：One emergency stop switch, it is connected with the pulse output unit；One rising switch, it is connected with the pulse output unit；One down switch, it is connected with the pulse output unit；One power on switch, it is connected with the power supply protection circuit；One power supply shutdown switch, is connected with the power supply protection circuit.
- 10. a kind of fatigue testing equipment, it is characterised in that including the control system according to claim 1-9 any one.
- 11. fatigue testing equipment according to claim 10, it is characterised in that the fatigue testing equipment includes：One Load brackets, including bolster stake and the first crossbeam and second cross beam that are connected with the bolster stake；Described first is horizontal At least one beam and the second cross beam are a moved cross beam；One clamping device, it is connected respectively with the first crossbeam and second cross beam, for clamping the tested test piece；The drive mechanism, it is connected between the moved cross beam by a transmission mechanism, for being controlled in the control signal The lower driving moved cross beam motion；AndThe control system, it is arranged at the Load brackets.
- 12. fatigue testing equipment according to claim 11, it is characterised in that the transmission mechanism includes；One leading screw, its first end are connected with the drive mechanism, and the second end is provided with one first screw thread；One sleeve, its first end are provided with the second screw thread with first threaded adapter and are set in the end of leading screw second；Its Second end is connected with the moved cross beam；Multiple limit switches, it is respectively arranged on each extreme position of the sleeve movement and is connected with the control system.
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| CN107065761A (en) * | 2017-06-09 | 2017-08-18 | 重庆创和科技有限公司 | A kind of driving control system of torsional fatigue test equipment |
| CN107588935B (en) * | 2017-08-22 | 2020-04-03 | 重庆红旗弹簧有限公司 | Leaf spring fatigue test system |
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