CN105973727A - Pendulum impact tester control system and control method thereof - Google Patents
Pendulum impact tester control system and control method thereof Download PDFInfo
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- CN105973727A CN105973727A CN201610351138.5A CN201610351138A CN105973727A CN 105973727 A CN105973727 A CN 105973727A CN 201610351138 A CN201610351138 A CN 201610351138A CN 105973727 A CN105973727 A CN 105973727A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/303—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated only by free-falling weight
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
- G01N2203/0087—Resistance to crushing
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Abstract
The invention discloses a pendulum impact tester control system. The pendulum impact tester control system comprises a tester, a controller and a frequency conversion driving device, wherein the frequency conversion driving device is connected with a driving motor and a speed detection device; the controller is connected to an industrial Ethernet switchboard; the industrial Ethernet switchboard is connected with a remote operation computer and a field operation panel respectively; the controller is connected with a position detection device; the invention further discloses a control method of the pendulum impact tester control system; the control method comprises the following steps of: (a) pre-setting an impact energy value; (b) automatically calculating a target lifting position value; (c) carrying out positioning control on a lifted pendulum; (d) carrying out speed control on the driving motor; (e) carrying out torque control on the driving motor; (f) carrying out current control on the frequency conversion driving device; and (g) outputting current to the driving motor. Only if one data is simply input through the field operation panel, a lifting mechanism can be fully automatically and accurately positioned and a whole process does not need manual intervention.
Description
Technical field
The invention belongs to technical field of automation, relate to the Machinery Control System of shock machine test platform, particularly relate to a kind of balance weight impact testing machine control system, and control method.
Background technology
Horizontal shock machine is that metal material is supported under dynamic load the instrument that shock proof performance is tested, and is widely used in the unit such as metallurgy, machine-building.Ye Shi R&D institution carries out the indispensable test instrunment of new material research.
Horizontal shock machine testing machine operation principle: shock machine is the potential energy being had with pendulum, a drop impact sample.Pendulum is the beater mechanism of shock machine, and its effect is to hit subject material, is the important component part of impact test platform.Pendulum is centered by shock machine balance staff, discharges beater mechanism when being in certain hoisting depth, with certain speed impact specimen because different impact velocitys to obtain result different.Only impact energy during impact specimen is absorbed by sample completely, and is not absorbed by other parts, and such impact test data are the most accurately and reliably.
Existing shock machine control system is only by the simple location controlling to realize pendulum, and the determination of final position and method of calibration are main mainly by perusal and manual measurement.Owing to there being resistance in air, the accumulated error of reductor, physical location is bigger with instrument display site error, controls effect not satisfactory.And rely on eye-observation position to be the most correctly operated manually, it is impossible to realizing automatically controlling, the corresponding time is slow, and precision more cannot ensure, needs repeatedly to regulate and just can obtain suitable position, affects result of the test.
The most how to solve swing arm location inaccurate, the corresponding time is slow, is those skilled in the art's problems of needing to solve.
Summary of the invention
In order to solve above-mentioned technical problem, an object of the present invention is to provide a kind of horizontal shock machine control system, for improving corresponding time and the positioning precision of control, to solve the limitation of prior art, improve accuracy and the reliability of impact test platform.
The technical solution adopted for the present invention to solve the technical problems is: a kind of balance weight impact testing machine control system, including testing machine, controller and the frequency-conversion drive apparatus of connection controller, connect on described frequency-conversion drive apparatus and have driving motor and speed detector, described controller is connected to industrial ethernet switch, connect remotely operation computer and execute-in-place panel simultaneously on industrial ethernet switch respectively, described controller connects and has position detecting device；
Described testing machine include anvil block mechanism for placing study subject and be separately positioned on anvil block mechanism before and after the frame mechanism of side and anticollision mechanism, it is provided with hoist engine on described frame mechanism, described hoist engine includes connecting the driving gear-box of motor, reel, shaft coupling and steel wire rope, described steel cord ends connects hoisting mechanism, hoisting mechanism end is connected with frame mechanism by main shaft, and described hoisting mechanism is connected by latch hook pendulum；
Described execute-in-place panel is for setting the impact energy data needed for study subject, and every operational factor of testing machine and state parameter；
Described speed detector includes that is arranged on the incremental-rotating coder driven on motor output shaft, for detecting the real-time speed driving motor, and sends speed pulse signal to frequency-conversion drive apparatus；
Described frequency-conversion drive apparatus, for driving motor to carry out position and speed closed loop control；
Described position detecting device includes an anchoring and an absolute value type encoder, and the steel wire rope of described anchoring is fixed on hoisting mechanism, and its axle head is coaxial with absolute value encoder, for detecting the hoisting depth of hoisting mechanism；
Described controller is a set of Programmable Logic Controller, is used for the impact energy data needed for receiving the study subject that execute-in-place panel sets and is converted into the target position data of hoisting mechanism, and receiving the position data from hoisting mechanism.
Described a kind of balance weight impact testing machine control system, its position detecting device is arranged on frame mechanism top.
Described a kind of balance weight impact testing machine control system, its frame mechanism lower end arranges an electromagnetic type proximity switch whether being in its original extreme lower position for detecting hoisting mechanism.
Described a kind of balance weight impact testing machine control system, its frame mechanism is positioned at the 1/3 and 2/3 of elevator total travel and is respectively equipped with a correlation photoswitch.
Described a kind of balance weight impact testing machine control system, its reel is provided with a limit switch.
The two of the purpose of the present invention are to provide the control method of a kind of horizontal shock machine control system.
The technical solution adopted for the present invention to solve the technical problems is: the control method of a kind of balance weight impact testing machine control system, and step is: a) preset study subject by impact energy values；
B) energy value in step a) is converted to hoisting mechanism target location value by calculating；
C) carry out hoisting mechanism positioning control；
D) to driving motor to carry out speed controlling；
E) to driving motor to carry out direct torque；
F) frequency-conversion drive apparatus carries out export electric current control；
G) electric current is exported to driving motor；
Real time execution speed set-up procedure d) according to the related pendulum of hoisting mechanism；
Current location set-up procedure c) according to the related pendulum of hoisting mechanism.
Further, also comprising the steps: in described step d), when the related pendulum of hoisting mechanism is close to target location, speed is gradually reduced, and during until arriving target location, speed is 0, runs and stops.
Further, also comprise the steps: that electromagnetic type proximity switch detects that when hoisting mechanism is in extreme lower position, the home position of hoisting mechanism is corrected by input signal to controller, controller；When hoisting mechanism walks maximum allowable stroke height, limit switch is triggered and signal is sent into controller, and controller sends quick shutdown order, and lifting process stops.
Further, also comprising the steps: hoisting mechanism arranges a rise correction value and a decline corrected value, when hoisting mechanism runs to correlation photoswitch position pair, the positional value of point hoisting mechanism is corrected；Described position feed back signal is transmitted to controller by synchronous serial signal transmission form, and controller receiving position data output speed data-oriented is to frequency-conversion drive apparatus.
Further, also comprise the steps: that described frequency-conversion drive apparatus by picking rate detection device signal and is calculated another position data, send into controller, use as reference and protection；Described frequency-conversion drive apparatus uses vector control mode to realize driving the closed loop control of motor, controls frequency, voltage and the phase place of frequency-conversion drive apparatus output according to the velocity pulse feedback signal of speed detector output, reaches the accurate control to motor speed.
The invention has the beneficial effects as follows: when control shock machine carries out testing operation in the distance, without impact test platform hoisting mechanism is carried out manual intervention when operator operate, only need to input tentation data in systems, and remotely transmission is ordered；Without manual measurement and arrange the object height of hoisting mechanism in impact test platform, only need to input the energy datum impacted needed for Device under test in input equipment, and after sending " accumulation of energy " order to system, system can calculate automatically, the location realizing the related pendulum of hoisting mechanism controls, and this is different from traditional mode of operation；Its speed of service can be adjusted the most in real time according to different control accuracy requirements, system, when the related pendulum of hoisting mechanism finally positions, meet the range of error that its registration controls to require；Hoisting mechanism is when target location release pendulum, and the impact energy of generation is essentially identical with the target impact energy value inputted in input equipment, and its error is less than ± 1%.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of testing machine of the present invention；
Fig. 3 is the operating process schematic diagram of testing machine of the present invention；
Fig. 4 is the operation logic figure of control method of the present invention.
Each reference is: 1 hoist engine, 2 main shafts, 3 hoisting mechanisms, 4 frame mechanisms, 5 latch hooks, 6 pendulums, 7 anvil block mechanisms, 8 anticollision mechanisms, 9 study subjects, 11 controllers, 12 industrial ethernet switchs, 13 position detecting devices, 14 remotely operate computer, 15 frequency-conversion drive apparatus, 16 execute-in-place panels, 17 speed detectors, 18 drive motor, A PROFIBUS fieldbus, B EPA, C signal cable, D power cable.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in further detail.
nullWith reference to shown in Fig. 1，The invention discloses a kind of balance weight impact testing machine control system，Can be accurately positioned making its beater mechanism，Operator only need to input impact energy data，In the case of by perusal or measuring by Other Instruments，Complete the operation of accumulation of energy and impact test intelligently，It includes testing machine、Controller 11 and the frequency-conversion drive apparatus 15 by PROFIBUS fieldbus A connection controller 11，Connected by power cable D on described frequency-conversion drive apparatus 15 and have driving motor 18，Connected by signal cable C and have speed detector 17，Connected by EPA B on described controller 11 and have industrial ethernet switch 12，Remotely operation computer 14 and execute-in-place panel 16 is connected respectively by EPA B on industrial ethernet switch 12，Connected by signal cable C on described controller 11 and have position detecting device 13.
With reference to shown in Fig. 2, described testing machine includes the anvil block mechanism 7 for placing study subject 9 and the frame mechanism 4 being separately positioned on anvil block mechanism 7 side front and back and anticollision mechanism 8, it is provided with hoist engine 1 on described frame mechanism 4, described hoist engine 1 includes driving motor 18, gear-box, reel, shaft coupling and steel wire rope, described steel cord ends connects hoisting mechanism 3, hoisting mechanism 3 end is flexibly connected with frame mechanism 4 by main shaft 2, and described hoisting mechanism 3 is connected by latch hook 5 pendulum 6.
Execute-in-place panel 16 is used for setting study subject 9 impact energy data, and every operational factor of testing machine and state parameter thereof.
Described speed detector 17 includes that is arranged on the incremental-rotating coder driven on motor 18 output shaft, for detecting the real-time speed driving motor 18, and sends speed pulse signal to frequency-conversion drive apparatus 15；
Described frequency-conversion drive apparatus 15, for to driving motor 18 to carry out position and speed closed loop control, the size of speed and moment is decided by the given real time position data of controller 11, and system uses direct torque, speed controlling and three closed loop controls of position control to ensure precision property.
Described assembly detection apparatus 13 includes an anchoring and absolute value type encoder (predominantly detecting parts), and the steel wire rope of described anchoring is fixed on hoisting mechanism 3, for detecting the hoisting depth of hoisting mechanism 3.
Described controller 11 is a set of Programmable Logic Controller, there is following function: receive the energy datum of the required impact of study subject 9 that execute-in-place panel 16 sets, after series of computation, and be converted into the target position data of the related pendulum of hoisting mechanism 36, and receive the real time position data from hoisting mechanism 3.
Described position detecting device 13 is arranged on frame mechanism 4 top, the machining accuracy of the mechanical link such as the gear-box of machine, reel, shaft coupling of not being put to the test due to assembly detection apparatus 13, and boom hoist cable lap wound, mechanically deform, the impact of vibration, it might even be possible to use the reel without grooving；Position detecting device 13 is affected less by installation accuracy, position feed back signal controls detection resources as main positions, transmitted to controller 11 by synchronous serial signal transmission form, ensure real-time and the reliability of position data transmission, controller 11 receives hoisting mechanism real time position data, and by series of computation output speed data-oriented to frequency-conversion drive apparatus 15.
Described hoisting mechanism 3 home position arranges an electromagnetic type proximity switch, is used for detecting whether hoisting mechanism 3 is in its original extreme lower position.
It is positioned on described frame mechanism 4 at the 1/3 and 2/3 of hoisting mechanism 3 total travel and is respectively equipped with a correlation photoswitch, a corrected value it is respectively provided with when hoisting mechanism 3 raising and lowering, when hoisting mechanism 3 promote or decline to this correction position time, respectively this positional value is corrected, guarantee that the hoisting mechanism 3 value during traveling is correct, do not affected by some external factor such as mechanical friction, gap.
A limit switch it is provided with on described reel; when hoisting mechanism 3 walking is to maximum allowable stroke height; limit switch is triggered and signal is sent into controller 11; controller 11 sends quick shutdown order automatically; lifting process stops; thus stop hoisting mechanism the most up, whole mechanical system is protected.
Below in conjunction with concrete application scenarios, the present invention is expanded on further.Present invention could apply to but be not limited to following state:
Certain is tested metal material needs to carry out one-shot strike test, tests its shock proof ability.After metal material (i.e. study subject 9) is placed in pilot region (i.e. anvil block mechanism 7 is above), the energy datum (unit is kilojoule) of the required impact of input on impact test platform field guidance panel 16, click on and " accumulation of energy " operation provided on computer 14 or execute-in-place panel 16 is remotely provided, the related beater mechanism of hoisting mechanism 3 (i.e. pendulum 6) slowly rises, until reaching object height (this object height, according to default impact energy data, establish through series of algorithms and correction).
After the related beater mechanism of hoisting mechanism 3 arrives object height, by the arrestment mechanism effect of hoist engine 1, remain static in high-altitude, wait that next step is ordered.If operator confirm that the impact energy now stored is accurate, operator can carry out next step；Otherwise, operator can re-enter impact energy data, and carries out " accumulation of energy " operation, and hoisting mechanism 3 can re-start location by related pendulum 6.
After hoisting mechanism 3 and pendulum 6 run to target location, operator can click on " impact " order on remotely operation computer 14 or execute-in-place panel 16, now controller 11 controls the plant equipment of impact test platform, the latch hook 5 on hoisting mechanism 3 is made to disengage with pendulum 6, pendulum 6 accelerates to fall due to action of gravity, hitting on subject material, its blow energy is data of input on guidance panel 16 at the scene, and both errors are less than ± 1%.
The present invention has only to be simply input a simple data, can automatically be accurately positioned hoisting mechanism, and whole process is without manual intervention.For conventional impact test platform, have the advantage that arrange by test object impact energy datum time, without the artificial hoisting depth calculating impact test platform, impact test energy datum needed for directly inputting in input equipment by impact object, system can be automatically converted into the height of hoisting mechanism；If it find that the data inputted are mistaken, can be with real time modifying test data, system can adjust hoisting mechanism automatically according to new input data, and need not the most again calculate, and whole system realizes the intellectuality of operation.
With reference to shown in Fig. 3, Fig. 4, the control method step of control system of the present invention is:
A) impact energy values is preset；
B) system calculates target (i.e. the related pendulum of hoisting mechanism 3 6) raised position value automatically；
C) pendulum 6 related to hoisting mechanism 3 carries out positioning control；
D) to driving motor 18 to carry out speed controlling, when the related pendulum of hoisting mechanism 36 is close to target location, speed is gradually reduced, and during until arriving target location, speed is 0, runs and stops；
E) to driving motor 18 to carry out direct torque；
F) frequency-conversion drive apparatus 15 carries out export electric current control；
G) by electric current output to driving motor 18；
Real time execution speed set-up procedure d) according to the related pendulum of hoisting mechanism 36；
Current location set-up procedure c) according to the related pendulum of hoisting mechanism 36.
Further, electromagnetic type proximity switch detects that when hoisting mechanism 3 is in extreme lower position, input signal is to controller 11, the home position of hoisting mechanism 3 is corrected by controller 11, when so guaranteeing to carry out impact test every time, and hoisting mechanism and the accuracy in pendulum home position；Described position feed back signal is transmitted to controller 11 by synchronous serial signal transmission form, and controller 11 receives hoisting mechanism real time position data, and by series of computation output speed data-oriented to frequency-conversion drive apparatus 15；Described frequency-conversion drive apparatus 15 is by gathering reel end speed detector 17 signal and being calculated another position data; send into controller 11; use as reference and protection; described frequency-conversion drive apparatus 15 uses vector control mode to realize driving the closed loop control of motor; velocity pulse feedback signal according to speed detector 17 output controls frequency, voltage and the phase place of frequency-conversion drive apparatus 15 output, reaches the accurate control to motor speed.
The principle of above-described embodiment only illustrative present invention and effect thereof; and the embodiment that part is used; for the person of ordinary skill of the art; without departing from the concept of the premise of the invention; some deformation and improvement can also be made; such as increasing the quantity of detection device, change the position etc. of detection device, these broadly fall into protection scope of the present invention.
Claims (10)
1. a balance weight impact testing machine control system, it is characterized in that: include testing machine, controller (11) and connect the frequency-conversion drive apparatus (15) of controller (11), the upper connection of described frequency-conversion drive apparatus (15) has driving motor (18) and speed detector (17), described controller (11) is connected to industrial ethernet switch (12), connecting respectively on industrial ethernet switch (12) simultaneously and remotely operate computer (14) and execute-in-place panel (16), the upper connection of described controller (11) has position detecting device (13)；
Described testing machine includes the anvil block mechanism (7) for placing study subject (9) and the frame mechanism (4) being separately positioned on anvil block mechanism (7) side front and back and anticollision mechanism (8), it is provided with hoist engine (1) on described frame mechanism (4), described hoist engine (1) includes connecting the gear-box driving motor (18), reel, shaft coupling and steel wire rope, described steel cord ends connects hoisting mechanism (3), hoisting mechanism (3) end is connected with frame mechanism (4) by main shaft (2), connected by latch hook (5) on described hoisting mechanism (3) and have pendulum (6)；
Described execute-in-place panel (16) is used for setting the impact energy data needed for study subject (9), and every operational factor of testing machine and state parameter；
Described speed detector (17) includes that is arranged on the incremental-rotating coder driven on motor (18) output shaft, is used for detecting the real-time speed driving motor (18), and sends speed pulse signal to frequency-conversion drive apparatus (15)；
Described frequency-conversion drive apparatus (15), for driving motor (18) to carry out position and speed closed loop control；
Described position detecting device (13) includes an anchoring and an absolute value type encoder, and the steel wire rope of described anchoring is fixed on hoisting mechanism (3), and its axle head is coaxial with absolute value encoder, is used for detecting the hoisting depth of hoisting mechanism (3)；
Described controller (11) is a set of Programmable Logic Controller, impact energy data needed for receiving the study subject (9) that execute-in-place panel (16) sets also are converted into the target position data of hoisting mechanism (3), and receive the position data from hoisting mechanism (3).
A kind of balance weight impact testing machine control system the most according to claim 1, it is characterised in that described position detecting device (13) is arranged on frame mechanism (4) top.
A kind of balance weight impact testing machine control system the most according to claim 1, it is characterised in that described frame mechanism (4) lower end arranges an electromagnetic type proximity switch whether being in its original extreme lower position for detecting hoisting mechanism (3).
A kind of balance weight impact testing machine control system the most according to claim 1, it is characterised in that be positioned on described frame mechanism (4) at the 1/3 and 2/3 of hoisting mechanism (3) total travel and be respectively equipped with a correlation photoswitch.
A kind of balance weight impact testing machine control system the most according to claim 1, it is characterised in that be provided with a limit switch on described reel.
6. the control method of a kind such as balance weight impact testing machine control system the most according to claim 1, it is characterised in that step is:
A) study subject (9) is preset by impact energy values；
B) energy value in step a) is converted to hoisting mechanism (3) target location value by calculating；
C) carry out hoisting mechanism (3) positioning control；
D) to driving motor (18) to carry out speed controlling；
E) to driving motor (18) to carry out direct torque；
Frequency-conversion drive apparatus (15) f) carries out export electric current control；
G) electric current is exported to driving motor (18)；
Real time execution speed set-up procedure d) according to hoisting mechanism (3) related pendulum (6)；
Current location set-up procedure c) according to hoisting mechanism (3) related pendulum (6).
Control method the most according to claim 6, it is characterised in that also comprise the steps: in described step d), when hoisting mechanism (3) related pendulum (6) is close to target location, speed is gradually reduced, during until arriving target location, speed is 0, runs and stops.
Control method the most according to claim 6, it is characterized in that, also comprise the steps: that electromagnetic type proximity switch detects that when hoisting mechanism (3) is in extreme lower position, the home position of hoisting mechanism (3) is corrected by input signal to controller (11), controller (11)；When hoisting mechanism (3) walking is to maximum allowable stroke height, limit switch is triggered and signal is sent into controller (11), and controller (11) sends quick shutdown order, and lifting process stops.
Control method the most according to claim 6, it is characterized in that, also comprise the steps: hoisting mechanism (3) arranges a rise correction value and a decline corrected value, when hoisting mechanism (3) runs to correlation photoswitch position pair, the positional value of point hoisting mechanism (3) is corrected；Described position feed back signal is transmitted to controller (11), controller (11) receiving position data output speed data-oriented to frequency-conversion drive apparatus (15) by synchronous serial signal transmission form.
Control method the most according to claim 6; it is characterized in that; also comprise the steps: that described frequency-conversion drive apparatus (15) by picking rate detection device (17) signal and is calculated another position data, send into controller (11), use as reference and protection；Described frequency-conversion drive apparatus (15) uses vector control mode to realize driving the closed loop control of motor (18), control, according to the velocity pulse feedback signal that speed detector (17) exports, frequency, voltage and the phase place that frequency-conversion drive apparatus (15) exports, reach the accurate control to motor speed.
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| CN108871978A (en) * | 2018-05-25 | 2018-11-23 | 哈尔滨工程大学 | A kind of experimental provision measuring ice compression failure intensity |
| CN110907294A (en) * | 2019-12-12 | 2020-03-24 | 苏州苏试试验集团股份有限公司 | Control device and control method of impact machine |
| CN110954418A (en) * | 2019-12-12 | 2020-04-03 | 苏州苏试试验集团股份有限公司 | Control device and control method of small impact test bed |
| CN110954413A (en) * | 2019-12-12 | 2020-04-03 | 苏州苏试试验集团股份有限公司 | Control device and control method of impact response spectrum test bed |
| CN114593986A (en) * | 2022-03-08 | 2022-06-07 | 北京强度环境研究所 | Pendulum impact test bed controller and control method thereof |
| CN114593986B (en) * | 2022-03-08 | 2024-06-11 | 北京强度环境研究所 | Pendulum impact test stand controller and control method thereof |
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