CN104965460A - Fatigue test device and control system thereof - Google Patents
Fatigue test device and control system thereof Download PDFInfo
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- CN104965460A CN104965460A CN201510386730.4A CN201510386730A CN104965460A CN 104965460 A CN104965460 A CN 104965460A CN 201510386730 A CN201510386730 A CN 201510386730A CN 104965460 A CN104965460 A CN 104965460A
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- 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
The disclosure provides a fatigue test device and a control system thereof. The control system includes: a PLC, which is connected to a driving mechanism and used for providing a control signal to the driving mechanism and outputting a test result; an interaction module, which is connected to the PLC, and used for receiving an input parameter, outputting the parameter to the PLC and receiving and displaying the test result; and a sensing module, which is connected to the PLC and the fatigue test device, and used for collecting the parameter of a to-be-tested sheet of the fatigue test device and inputting the parameter to the PLC.
Description
Technical field
The disclosure relates to technical field of automatic control, is specifically related to a kind of fatigue testing equipment and control system thereof.
Background technology
Fluid sealant is that one is out of shape with sealing surface shape, not easily trickles, has certain close-burning encapsulant, and it is used to fill configuration gap, to play the tackifier of sealing function.Fluid sealant has anti-leak, waterproof, against shock and sound insulation, the effect such as heat insulation.At present, fluid sealant has been widely used in the industries such as building industry, packaging industry, automobile making and electronic manufacture.But, no matter being applied to which kind of industry, before the fluid sealant of different batches comes into operation, all needing carrying out the test events such as adhesive property test, testing fatigue and extension test.Only have the batch products of test passes, just can come into operation.
The test of fluid sealant bonding waits other test event, only needs to rely on simple fixture or equipment just can complete.Fluid sealant testing fatigue, extension test are then comparatively complicated.Such as, fluid sealant is needed to be made into Special test, the upper and lower two ends of test piece are fixed with fixture, four-stage is divided into by the requirement of fluid sealant testing standard, each stage is divided into low maintenance pulling force, the low retention time, high maintenance pulling force and high retention time, each stage carries out thousands of round tension tests repeatedly, to carry out testing fatigue.Test piece after subjected to testing fatigue, then the one direction tension test carrying out constant speedpump, until test piece fracture, to carry out extension test.The shift value of value of thrust and test piece suffered by test piece in whole extension test process, all will reach relevant criterion.
Fluid sealant testing fatigue in conventional art and extension test are all completed by two different equipment.The control system of testing apparatus is also divided into two types, namely be the servo-control system of platform and the servo-control system that is platform with import nonshared control unit with single-chip microcomputer, and these two kinds of servo control platform finally all will by means of programming tool exploitation upper computer softwares such as VB or C++.
Take single-chip microcomputer as the servo-control system of platform, because the data processing figure place of single-chip microcomputer is limited in one's ability, can not accomplishes that internal calculation machinery transmission position is moved, also need to be equipped with position-measurement device, have impact on the precision of displacement measurement; And its maximum shortcoming is that SCM Based system belongs to dedicated system, cannot expanding system function, systemic-function can not be revised easily.And being limited by the level restriction of research staff, the equipment performance made is different.With the servo-control system that import nonshared control unit is platform, Technical comparing is ripe, can go out mechanical drive displacement in controller internal calculation.But be limited to the using method of controller, equipment is when testing the fluid sealant of different batches, and must adjust pid parameter by special software, user uses very inconvenient, and the nonshared control unit of import is simultaneously expensive.In addition, the data monitoring platform of above-mentioned two kinds of control system all needs to adopt VB programming tool to programme, and the construction cycle is slow, and software systems upgrade difficulty.
Therefore, a kind of control system of novel fatigue testing equipment urgently provides.
Summary of the invention
For some or all of problem of the prior art, the disclosure provides a kind of fatigue testing equipment and control system thereof, for overcoming at least to a certain extent due to the restriction of correlation technique and defect and the one or more problems caused.
Other characteristics of the present disclosure and advantage become obvious by by detailed description below, or the acquistion partially by practice of the present disclosure.
According to first aspect of the present disclosure, provide a kind of control system of fatigue testing equipment, be applied to a fatigue testing equipment; Described fatigue testing equipment at least comprises a driving mechanism; Described control system comprises:
One PLC, is connected with described driving mechanism, for providing a control signal to described driving mechanism and for exporting a test result;
One interactive module, is connected with described PLC, for receiving the parameter of input and exporting described PLC to and for receiving and presenting described test result;
One sensing module, is connected with described PLC and fatigue testing equipment, for gathering the parameter of tested test piece in described fatigue testing equipment and inputing to described PLC.
In a kind of illustrative embodiments of the present disclosure, described PLC comprises:
One analog input unit, is connected with described sensing module, for receive and change described sensing module export parameter signal;
One processor unit, is connected with described analog input unit and load module, for receiving the parameter signal of described load module output and exporting described test result;
One pulse output unit, is connected with described driving mechanism and processor unit, for providing described control signal to described driving mechanism;
One power supply unit, is connected with described analog input unit, processor unit and pulse output unit, for powering to described analog input unit, processor unit and pulse output unit.
In a kind of illustrative embodiments of the present disclosure, described interactive module comprises a man-machine interface and/or an industrial computer.
In a kind of illustrative embodiments of the present disclosure, described man-machine interface is connected with described processor unit by a RS232 interface;
Described industrial computer is connected with described processor unit by an ethernet port.
In a kind of illustrative embodiments of the present disclosure, described control system also comprises:
One signal transmitting device; Be connected by described signal transmitting device between described sensing module with described analog input unit.
In a kind of illustrative embodiments of the present disclosure, described driving mechanism is a servo principal axis motor; Described control system also comprises:
One main axle servo driver; Be connected by described main axle servo driver between described pulse output unit with described servo principal axis motor.
In a kind of illustrative embodiments of the present disclosure, also comprise a power supply protection circuit, be connected with described power module; Described power supply protection circuit comprises:
One direct supply, is connected with described PLC by a contactor;
One earth leakage circuit-breaker, is connected with described direct supply and PLC.
In a kind of illustrative embodiments of the present disclosure, described control system also comprises:
One control box, described PLC, signal transmitting device, man-machine interface, main axle servo driver and power supply protection circuit are integrated in described control box.
In a kind of illustrative embodiments of the present disclosure, the control panel of described control box is provided with a switch element; Described switch element comprises:
One emergency stop switch, is connected with described pulse output unit;
One rising switch, is connected with described pulse output unit;
One decline switch, is connected with described pulse output unit;
One power on switch, is connected with described power supply protection circuit;
One power supply shutdown switch, is connected with described power supply protection circuit.
According to second aspect of the present disclosure, provide a kind of fatigue testing equipment, comprise any one control system above-mentioned.
In a kind of illustrative embodiments of the present disclosure, described fatigue testing equipment comprises:
One Load brackets, comprises bolster stake and the first crossbeam that is connected with described bolster stake and second cross beam; Described first crossbeam and described second cross beam are one of at least a moved cross beam;
One clamping device, is connected with described first crossbeam and second cross beam respectively, for clamping described tested test piece;
Described driving mechanism, is connected by a gear train with between described moved cross beam, under controlling in described control signal, drive described moved cross beam to move; And,
Described control system, is arranged at described Load brackets.
In a kind of illustrative embodiments of the present disclosure, described gear train comprises;
One leading screw, its first end is connected with described driving mechanism, and the second end is provided with one first screw thread;
One sleeve, its first end is provided with the second screw thread of described first threaded adapter and is set in described leading screw second end; Its second end is connected with described moved cross beam;
Multiple limit switch, is located at each extreme position of described sleeve movement respectively and is connected with described control system.
In sum, in the fatigue testing equipment provided in disclosure illustrative embodiments and control system thereof, achieve control to fatigue testing equipment by arranging PLC, interactive module and sensing module.In addition, this Control system architecture is simple, and easy to operate, software development cycle is short, and can the reliability that is in operation of lift-off seal glue testing apparatus.
Accompanying drawing explanation
Describe its illustrative embodiments in detail by referring to accompanying drawing, above-mentioned and further feature of the present disclosure and advantage will become more obvious.
Fig. 1 is the module diagram of a kind of fatigue testing equipment control system in disclosure example embodiment.
Fig. 2 is the signal wiring schematic diagram of a kind of fatigue testing equipment control system in disclosure example embodiment.
Fig. 3 is the software module schematic diagram of a kind of fatigue testing equipment control system in disclosure example embodiment.
Embodiment
More fully illustrative embodiments is described referring now to accompanying drawing.But illustrative embodiments can be implemented in a variety of forms, and should not be understood to be limited to embodiment set forth herein; On the contrary, these embodiments are provided to make the disclosure comprehensively with complete, and the design of illustrative embodiments will be conveyed to those skilled in the art all sidedly.Reference numeral identical in the drawings represents same or similar structure, thus will omit their detailed description.
In addition, described feature, structure or characteristic can be combined in one or more embodiment in any suitable manner.In the following description, provide many details thus provide fully understanding embodiment of the present disclosure.But, one of skill in the art will appreciate that and can put into practice technical scheme of the present disclosure and not have in described specific detail one or more, or other module, element etc. can be adopted.In other cases, be not shown specifically or describe known features, to avoid fuzzy each side of the present disclosure.
A kind of control system of fatigue testing equipment is provide firstly in this illustrative embodiments.Described film fatigue testing equipment at least comprises a driving mechanism; In addition, it can also comprise Load brackets, clamping device and gear train etc.Though be described for fluid sealant testing apparatus in this illustrative embodiments, while it is readily appreciated that, this control system also can be applied in the film fatigue testing equipment of other types, such as, sheet rubber fatigue testing equipment etc., is not limited in the mode of illustrating in this illustrative embodiments.
Shown in figure 1, the control system in this illustrative embodiments can comprise a PLC, an interactive module and a sensing module etc.Described PLC is connected with described driving mechanism, for providing a control signal to described driving mechanism and for exporting a test result.Described interactive module is connected with described PLC, for receiving the parameter of input and exporting described PLC to and for receiving and presenting described test result.Described sensing module is connected with described PLC and fatigue testing equipment, for gathering the parameter of tested test piece in described fatigue testing equipment and inputing to described PLC.
PLC (Programmable Logic Controller) controller a kind ofly replaces traditional relay control device specially for applying in industrial settings and the electronic installation of the digital operation designed.PLC adopts the storer that can programme, be used for storing the operational orders such as actuating logic computing, sequential operation, timing, counting and arithmetical operation therein, and input or output by digital or analog, control all types of machinery and production run.PLC possess highly versatile, easy to use, adapt to wide, reliability is high, antijamming capability is strong, be easy to learn and use, program can be revised and the feature of expansion in real time execution monitoring and being easy to.Current PCL controller has been widely used in the industries such as iron and steel, oil, chemical industry, electric power, automobile, machine-building at home and abroad, but is not also applied at present in the film tests such as fluid sealant.
Shown in figure 2, in this illustrative embodiments, described PLC can comprise an analog input unit, a processor unit, a pulse output unit and a power supply unit, can also comprise the interface units such as ethernet port D12, RS232 interface D11.Wherein said analog input unit is connected with described sensing module, for receive and change described sensing module export parameter signal.Described processor unit is connected with described analog input unit and load module, for receiving the parameter signal of described load module output and exporting described test result.Described pulse output unit is connected with described driving mechanism and processor unit, for providing described control signal to described driving mechanism.Described power supply unit is connected with described analog input unit, processor unit and pulse output unit, for powering to described analog input unit, processor unit and pulse output unit.
Further, described control system can also comprise a power supply protection circuit.Described power supply protection circuit is connected with described power module.Described power supply protection circuit can comprise a direct supply, a contactor, an earth leakage circuit-breaker, a 24V direct supply and a fuse base etc.Described direct supply can be connected with described PLC by described contactor, and described earth leakage circuit-breaker can be connected with described direct supply and PLC.In this illustrative embodiments, can the mode such as wire harness and connector be connected between described power supply protection circuit with described PLC.
In addition, PLC system software can also be installed in described PLC, test sequence routine package, testing fatigue automatic speed regulation software package and extension test based on PLC break the software units such as identification software bag.Such as: PLC system software can write PLC hardware memory by PLC producer when dispatching from the factory, its compiling for responsible user program and execution, the supervision of cycling time and the failure monitoring of PLC hardware, the interface that user only need be provided by it does the setting of basic parameter.The generation of the collection of data sensing module can having been assisted to provide based on the fluid sealant sequence programme software bundle of PLC and the communication between conversion and interactive module, control signal and system alarm signal, the calling etc. of subroutine function block bag.Fluid sealant testing fatigue automatic speed regulation software package can be research and develop for the particular country standard in fluid sealant test process.The different phase of fluid sealant testing fatigue needs to change servo velocity in real time, and equipment was based on the control system of single-chip microcomputer or nonshared control unit in the past, was difficult to accomplish dynamically to change servo velocity; Then can scan based on the high-speed circulating of PLC inside in this illustrative embodiments, adopt real-time comparative analysis, add the mathematical operation function that PLC is inner powerful, realize fluid sealant testing fatigue automatic speed regulating function, make test operation become more simple, applicable surface is also more extensive.It can be the exclusive data monitoring software bag developed based on PLC inner high speed data processing function that fluid sealant extension test breaks identification software bag.Gather fracture value in conventional art to obtain by analyzing data monitoring software, but be subject to the impact of data collection cycle, the value often analyzing out and the value of actual crack have certain error.Based on the high-velocity scanning channel function of PLC inside in this illustrative embodiments, sweep velocity can reach 0.1 microsecond the soonest.Based on the value that high-velocity scanning obtains, be that the control system institute in the past based on single-chip microcomputer and nonshared control unit is inaccessiable.So the control system in this illustrative embodiments also makes the accuracy of extension test be improved.
In this illustrative embodiments, described interactive module can comprise a man-machine interface and an industrial computer.Such as, described man-machine interface is connected with described processor unit by a RS232 interface D11, is namely RS232 standard communications mode between PLC and man-machine interface; Described industrial computer is connected with described processor unit by an ethernet port D12, namely be the ethernet communication mode of ICP/IP protocol between described PLC and industrial computer, adopt the speed of ethernet communication to reach 100MB/S, the most I of data collection cycle shortens to 5ms.
In this illustrative embodiments, described man-machine interface can be the medium carrying out interactive information exchange between control system and user, thus realizes the conversion that the internal form of information and the mankind can accept between form.Man-machine interface also referred to as touch-screen, is widely used in, in various automation equipment, possessing simple to operate in industry control industry, convenient, economical, practical, can support multiple kinds, the advantages such as corresponding PLC machine is extensive.Man-machine interface internal memory can be provided with human-computer interface system software and human interface software.Industrial computer is independent installation, can be provided with test monitoring configuration software package in it.
The internal memory that identification software bag can be arranged on PLC is broken based on the fluid sealant sequence programme software bundle of PLC, fluid sealant testing fatigue automatic speed regulation software package, fluid sealant extension test, based on the fluid sealant sequence programme software bundle of PLC, fluid sealant testing fatigue automatic speed regulation software package, fluid sealant extension test are broken identification software bag etc. and are responsible for and the conversion of complete operation data, sequence action output, the adjustment of self-adaptation product speed, instantaneously break the functions such as detection.Human interface software can be arranged on man-machine interface hardware memory, and the Hard link between PLC and man-machine interface is RS232 standard communications mode.Human interface software is responsible for and is completed the execution of picture display and equipment operating function, the display of the adjustment of each stage setting parameter of torture test, Tensile Test Tensile speed, unit exception warning, in real time pull-up curve and real-time displacement curve, and keep the transmission that communicates with PLC.Configuration software refers to the special software of some data acquisitions and process control, they are at the platform of automatic control system supervisory layers one-level and development environment, good User Exploitation interface can be provided with flexile configuration mode (instead of programming mode), carry out the system integration, configuration software has the powerful function such as remote monitoring, data acquisition, data analysis, process control.In this example embodiment, configuration software is arranged on industrial computer operating system, and configuration software can complete all feature operations that above-mentioned human interface software possesses.Configuration software also possesses the deposit of real-time testing data automated data library, and historical data curve display, in real time report output, history report export, history reports to the police the functions such as inquiry, report printing, remote computer inquiry.
In this illustrative embodiments, described sensing module can comprise a high precision pull sensor G11.Described control system can also comprise a signal transmitting device.Between described sensing module and described analog input unit, namely can be connected by described signal transmitting device with between described high precision pull sensor G11.In this illustrative embodiments, the effect of described signal transmitting device can be provide+5V direct supply to described high precision pull sensor G11, and accept the voltage signal of described pulling force sensor G11 feedback, after inside chip and line transfer, then the signal of outputting standard 4-20mA signal is to the Analog input mModule of described PLC.In this illustrative embodiments, can the mode such as quick inserting fitting be connected between described PLC with signal converter and between signal transmitting device with high precision pull sensor G11.
Driving mechanism in described fatigue testing equipment can be a servo principal axis motor M.And then in this illustrative embodiments, described control system can also comprise a main axle servo driver.Can be connected by described main axle servo driver between described pulse output unit with described servo principal axis motor M.In this illustrative embodiments, described PLC can connector mode be connected with between main axle servo driver, and main axle servo driver can adopt the modes such as quick inserting fitting to be connected with between spindle servo electric machine and spindle servo electric machine scrambler.
For the ease of encapsulating and protecting each parts of described control system, in this illustrative embodiments, described control system can also comprise a control box.Described PLC, signal transmitting device, main axle servo driver and power supply protection circuit all can be integrated in described control box, and described man-machine interface then can be integrated in the control panel of described control box.In addition, the control panel of described control box can be provided with a switch element; Described switch element can comprise an emergency stop switch S11, rising switch S 12, decline switch S 13, power on switch S14 and power supply shutdown switch S15.In addition, the control panel of described control box can also arrange other assemblies such as power light L11.Described emergency stop switch S11 is connected with described pulse output unit.Described rising switch S 12 is connected with described pulse output unit.Described decline switch S 13 is connected with described pulse output unit.Described power on switch S14 is connected with described power supply protection circuit.Described power supply shutdown switch S15 is connected with described power supply protection circuit.Described PLC is connected by being arranged by screwless dedicated terminals with between emergency stop switch S11, rising switch S 12 and decline switch S 13.Can by screwless dedicated terminals be arranged same with between power on switch S14, power supply shutdown switch S15 and power light L11 of described power supply protection circuit is connected.
Further, in this example embodiment, additionally provide a kind of fatigue testing equipment, comprise any one control system in above-mentioned example embodiment.Such as, described fatigue testing equipment can comprise a Load brackets, a Load brackets, a clamping device, a driving mechanism described above and an above-mentioned control system.Described Load brackets comprises bolster stake and the first crossbeam that is connected with described bolster stake and second cross beam, and described first crossbeam and described second cross beam are one of at least a moved cross beam; In this example embodiment, for described first crossbeam for moved cross beam is described.Described clamping device is connected with described first crossbeam and second cross beam respectively, for clamping described tested test piece.Be connected by a gear train between described driving mechanism with described moved cross beam, under controlling in described control signal, drive described moved cross beam to move.Described set-up of control system is in described Load brackets.
In a kind of illustrative embodiments of the present disclosure, described gear train can comprise a leading screw, a sleeve and multiple limit switch.Described leading screw first end is connected with described driving mechanism, and the second end is provided with one first screw thread.Described sleeve first end is provided with the second screw thread of described first threaded adapter and is set in described leading screw second end; Its second end is connected with described moved cross beam.Described multiple limit switch is located at each extreme position of described sleeve movement respectively and is connected with described control system.Such as, described multiple limit switch can comprise a upper limit protection switch S21 and once position limitation protection switch S 22; Described upper limit protection switch S21 can be arranged on the upper end of described sleeve and be connected with the pulse output unit in above-mentioned PLC.Described lower limit protection switch S22 can be arranged on the lower end of described sleeve and be connected with the pulse output unit in above-mentioned PLC.Can be connected by screwless dedicated terminals row between PLC with limit switch.
About the fatigue testing equipment in above-described embodiment, wherein the concrete mode of modules executable operations has been described in detail in the embodiment of relevant controlling system, will not elaborate explanation herein.
In fatigue testing equipment in this example embodiment and control system thereof, each stage setting parameter of torture test, supports maximum five sections of setting parameters, above-mentioned man-machine interface or industrial computer all can set.Every section can set low maintenance pulling force, low retention time, high maintenance pulling force, high retention time, rise time, return time and cycle index etc.The setting parameter of tension test has the setting of automatic clear pulling force point, test speed, ultimate tension protection, breaks identification absolute value setting etc.
Torture test operation and control: PLC controls servo principal axis driver by pulse mode, servo principal axis driver control spindle motor M, the rotation completing spindle motor M controls, the scrambler of spindle motor M sends the pulse of the angle position of main shaft to servo principal axis driver, servo principal axis driver by and accept to make comparisons from the pulse command of PLC, control in real time spindle motor M and export pulse command running by PLC.When occurring that servomotor exception or drive system are reported to the police, PLC can detect servo-drive system fault automatically, and in man-machine interface and configuration software interface display out.In the process of servo-drive system running, according to the zero point that plant machinery system is determined, and the reduction gear ratio of machinery, automatically calculate the position of current servo motion in PLC.
Extension test operation and control: share a servo-drive system with torture test, equipment can not carry out fatigue and tension test simultaneously.Torture test is crossed in program, and servo-drive system accepts PLC pulse command, carries out rotating cycle operation, until off-test by the number of times set and speed.When extension test carries 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 is in real time broken in PLC inside, when servo-drive system change in displacement, and tension variations value is when being less than setting value, can judge that test piece is broken, break recognizer and automatically preserve and demonstrate the value of thrust and shift value of breaking moment, and configuration software be deposited in real time to process values that is tired and tension test.
Below to the workflow brief description in addition of fatigue testing equipment in this example embodiment:
(1) making of test piece: by fluid sealant test industry standard, make corresponding test piece.
Described test material is fluid sealant or rubber product, and fluid sealant need be made into special test piece shaping rear by GB and can be used for test.
(2) test piece is fixing: test piece be positioned on testing apparatus clamping device, and the degree of tightness of test piece is adjusted by man-machine interface or industrial computer (also can use the rising switch on control box operation control panel and decline shift knob), test piece is made to be in contact seamless with clamping device, and not by axial or longitudinal power.
(4) current pulling force data resets, current location clear 0.
(5) setting of tired each phase data: by pulling force, time, cycle index and the rising and falling time in fluid sealant industry testing standard setting each stage.
(6) start testing fatigue: point starts testing fatigue button in man-machine interface or configuration software interface, testing apparatus can be run automatically according to test designated parameter.Pulling force real-time curve can be inquired about in man-machine interface or configuration software interface, position real-time curve and tensioning positions displacement diagram etc.And configuration software can preserve test data for consulting by Auto-Memory.
(7) testing fatigue terminates automatically.
(8) extension test setting parameter: the setting of setting stretching ginseng test automatic clear pulling force point, test speed, ultimate tension are protected, broken correlation parameters such as identifying absolute value.
(9) start extension test: point starts extension test button in man-machine interface or configuration software interface, testing apparatus can be run automatically according to test designated parameter.
(10) extension test terminates: when test piece is broken, and man-machine interface or configuration software show the breakpoint pulling force of this extension test automatically, and breakpoint location.Historical data in whole drawing process can be inquired about by multiple method in configuration software database, exports.
In the fluid sealant testing apparatus provided in this example embodiment and control system thereof, introduce PLC, abandoned in traditional design and relied on single-chip microcomputer or nonshared control unit collection to control, computing machine carrys out the scheme of calculation process data.In the traditional concept of people, PLC is still and is not suitable for doing a large amount of calculating, data comparative analysis work, and this is also that traditional understanding is to PLC misunderstanding.The PLC of present stage provide not only a large amount of mathematical operation instructions, data conversion instruction, also provides powerful functional block programing function.Language function block is programmed, and uses the higher level lanquage process data operation of class VB, does not need to look into ladder diagram instruction manual completely.And functional block repeatedly can also be called after generating in different engineerings, only actual parameter need be given.Fluid sealant testing fatigue automatic speed regulation software package in this example embodiment, it is exactly the routine package created based on high-level programming language that fluid sealant extension test breaks identification software bag, can conveniently transplant between different PLC.Based on the high stability of PLC, fluid sealant testing apparatus is in operation and shows extremely reliable.Without equipment host computer in the past do in control system occur that computer glitch or Software for Design problem cause tired hold together.Based on the Reliable Design in this example embodiment, on-the-spot at general test, if do not need to preserve a large amount of monitor data, only rely on man-machine interface and PLC software systems also can complete test request.
The disclosure is described by above-mentioned related embodiment, but above-described embodiment is only enforcement example of the present disclosure.Must it is noted that the embodiment disclosed limit the scope of the present disclosure.On the contrary, not departing from the change and retouching done in spirit and scope of the present disclosure, scope of patent protection of the present disclosure is all belonged to.
Claims (12)
1. a control system for fatigue testing equipment, is applied to a fatigue testing equipment; Described fatigue testing equipment at least comprises a driving mechanism; It is characterized in that, described control system comprises:
One PLC, is connected with described driving mechanism, for providing a control signal to described driving mechanism and for exporting a test result;
One interactive module, is connected with described PLC, for receiving the parameter of input and exporting described PLC to and for receiving and presenting described test result;
One sensing module, is connected with described PLC and fatigue testing equipment, for gathering the parameter of tested test piece in described fatigue testing equipment and inputing to described PLC.
2. control system according to claim 1, is characterized in that, described PLC comprises:
One analog input unit, is connected with described sensing module, for receive and change described sensing module export parameter signal;
One processor unit, is connected with described analog input unit and load module, for receiving the parameter signal of described load module output and exporting described test result;
One pulse output unit, is connected with described driving mechanism and processor unit, for providing described control signal to described driving mechanism;
One power supply unit, is connected with described analog input unit, processor unit and pulse output unit, for powering to described analog input unit, processor unit and pulse output unit.
3. control system according to claim 2, is characterized in that, described interactive module comprises a man-machine interface and/or an industrial computer.
4. control system according to claim 3, is characterized in that, described man-machine interface is connected with described processor unit by a RS232 interface;
Described industrial computer is connected with described processor unit by an ethernet port.
5. the control system according to claim 3 or 4, is characterized in that, described control system also comprises:
One signal transmitting device; Be connected by described signal transmitting device between described sensing module with described analog input unit.
6. control system according to claim 5, is characterized in that, described driving mechanism is a servo principal axis motor; Described control system also comprises:
One main axle servo driver; Be connected by described main axle servo driver between described pulse output unit with described servo principal axis motor.
7. control system according to claim 6, is characterized in that, described control system also comprises a power supply protection circuit, is connected with described power module; Described power supply protection circuit comprises:
One direct supply, is connected with described PLC by a contactor;
One earth leakage circuit-breaker, is connected with described direct supply and PLC.
8. control system according to claim 7, is characterized in that, described control system also comprises:
One control box, described PLC, signal transmitting device, man-machine interface, main axle servo driver and power supply protection circuit are integrated in described control box.
9. control system according to claim 8, is characterized in that, the control panel of described control box is provided with a switch element; Described switch element comprises:
One emergency stop switch, is connected with described pulse output unit;
One rising switch, is connected with described pulse output unit;
One decline switch, is connected with described pulse output unit;
One power on switch, is connected with described power supply protection circuit;
One power supply shutdown switch, is connected with described power supply protection circuit.
10. a fatigue testing equipment, is characterized in that, comprises the control system according to claim 1-9 any one.
11. fatigue testing equipments according to claim 10, is characterized in that, described fatigue testing equipment comprises:
One Load brackets, comprises bolster stake and the first crossbeam that is connected with described bolster stake and second cross beam; Described first crossbeam and described second cross beam are one of at least a moved cross beam;
One clamping device, is connected with described first crossbeam and second cross beam respectively, for clamping described tested test piece;
Described driving mechanism, is connected by a gear train with between described moved cross beam, under controlling in described control signal, drive described moved cross beam to move; And,
Described control system, is arranged at described Load brackets.
12. fatigue testing equipments according to claim 11, is characterized in that, described gear train comprises;
One leading screw, its first end is connected with described driving mechanism, and the second end is provided with one first screw thread;
One sleeve, its first end is provided with the second screw thread of described first threaded adapter and is set in described leading screw second end; Its second end is connected with described moved cross beam;
Multiple limit switch, is located at each extreme position of described sleeve movement respectively and is connected with described control system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510386730.4A CN104965460B (en) | 2015-07-02 | 2015-07-02 | Fatigue testing equipment and its control system |
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| CN201510386730.4A CN104965460B (en) | 2015-07-02 | 2015-07-02 | Fatigue testing equipment and its control system |
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| CN104965460A true CN104965460A (en) | 2015-10-07 |
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