山東國量儀器設(shè)備有限公司
1、 Introduction:
DWP dynamic and static test system is applicable to the dynamic and static mechanical property tests of springs, metallic and non-metallic materials and small parts, including tensile, compression, torsion, low cycle and high cycle fatigue tests of materials and parts. High and low temperature boxes are equipped for high and low temperature mechanical tests.
The system adopts the development concept of "unitization, modularization and standardization", draws lessons from the core technology of electro-hydraulic servo dynamic testing machine, and is designed in combination with the actual use situation of domestic users. The system uses linear motor as the loading unit, which has the characteristics of low noise, high frequency response, very low energy consumption and maintenance free.
The whole system adopts electrical components without any oil to participate in the experiment, which greatly improves the stability of the equipment.
The picture of single station is for reference only, and the details shall be subject to the real object
2、 Scheme Description:
DWP dynamic and static test system is mainly composed of a host (upper servo linear actuator), locking indenter (sample tooling), driving module, full digital single channel servo controller, computer printer, relevant test software and other necessary accessories.
See Figures 1 and 2 for the working principle diagram and control block diagram.
Fig. 1 system working principle diagram
1）. Main engine: the main engine is of frame structure, and the servo linear actuator is placed inside the main engine frame. It is mainly used in tension compression fatigue test of various micro parts, non-metallic materials, springs, etc. The manual cam mechanism is locked to facilitate the rapid clamping and positioning of the sample.
1.1）. The main engine is of double column frame structure, and the outer surface is treated with hard chromium plating, with beautiful appearance and anti-corrosion ability;
1.2）. the load sensor is installed on the lower end face of the actuator to measure the test load.
1.3）.Sample clamping, beam movement and emergency stop buttons are designed in front of the main engine workbench to facilitate the operation of testers.
2）. Full digital single channel servo controller:
2.1）.. Number of control channels: 1, including one test force, one test displacement, one test deformation and one closed-loop control loop, with undisturbed and smooth switching function of control mode. The maximum refresh frequency of closed-loop control data is 2KHz; The resolution of controller a / D and D / A is 14 bits; Signal generation frequency range: 0.001Hz ~ 5KHz; Waveform of signal generator: sine wave, triangular wave, etc; The controller has limit parameter setting function and complete protection function. In addition to overload (110%) protection and secondary overcurrent protection, it also has arbitrarily set dynamic load upper and lower limit protection, static load upper and lower limit protection, frequency protection, etc.
2.2）.. Servo dynamic testing machine (system) control software:
System management software: this software is the basis of the whole digital servo controller. Its main functions are to manage the hardware resources of the control system, define sensors, adjust digital control parameters, set protection, display the current control mode, hydraulic and function generator status and sensor calibration, and provide dual trace digital oscilloscope Function generator software: the software is mainly used for constant amplitude dynamic test, such as constant amplitude fatigue test, etc. The function generator software will automatically track and correct the peak and valley values of the control quantity (such as load) to ensure that during the whole test process, the typical dynamic error of each peak is ± 1% FS. During the test, the operator can dynamically change the peak, valley value and frequency, or manually or automatically maintain the signal. If the interval of automatic signal maintenance cycles is set, The software will automatically keep the signal at the set level every time the number of test cycles increases by one cycle interval, so as to facilitate the measurement of some test data (such as visual crack length). The optional waveforms of the software include sine wave, triangular wave, oblique wave, sawtooth wave, combined wave and combined oblique wave test. After the test, the software will save some important data, such as test load, frequency, number of cycles and test time. The software can also carry out simple static tests. Multifunctional test software: the software is a flexible and fully functional test software. Users can use it to design special test methods without programming. This software makes all kinds of control functions, data acquisition functions and other auxiliary functions of the servo controller on a panel in the form of icons. Users can drag and drop these function icons into the test definition panel with the mouse, and combine them at will according to user needs, so as to test according to the user-defined test method. The software can be used in random spectrum test.
the measurement and control system of the machine adopts computer bus plug-in design. The whole system has the functions of automatic zero adjustment, automatic calibration, continuous whole process measurement, stepless speed regulation and so on.
it can control the rate of test force and maintain the test force.
it can control the deformation rate and maintain the deformation.
it can control the displacement rate and maintain the displacement.
during the test, various control rates and control modes can be switched smoothly.
low cycle and fatigue tests can be carried out, with triangular wave, sine wave, square wave and other combined waveforms, random waveforms, etc. the test process can realize the automatic operation of the program.
it has complete machine protection function, oil source fault alarm and automatic protection function.
it has test process monitoring function and fault self diagnosis function of measurement and control system.
accurate measurement, complete functions, high reliability, simple operation and convenient use
the control system has oscilloscope detection interface
it can complete the monitoring and management of system test and the processing of test data. It has a good man-machine interface which is easy to operate.
the operator only needs one mouse to complete the control and management of the test (keyboard assisted input parameters).
the software can realize various waveform tests of parts.
force control, displacement or strain control can be adopted, and random smooth switching can be adopted.
multiple curves, data windows and test status windows can be displayed on the computer screen at the same time, and output and print.
in the program test, the control mode can be intervened at any time to change the control mode and adjust the control parameters.
the perfect software self-test function can prompt the place where the fault occurs. There is no need for the manufacturer to repair on site, just replace the corresponding function card in the computer.
network communication can be realized.
2.3.1 all digital universal signal conditioning unit: three measuring channels, test force, displacement and deformation closed-loop control loop. It has the function of undisturbed smooth switching of control mode.
2.3.2 the maximum refresh frequency of closed-loop control data is 20Hz.
2.3.3 the resolution of controller a / D and D / A is 16 bits.
2.3.4 signal generation frequency range: 0.01Hz ~ 10Hz.
2.3.5 waveform of signal generator: sine wave, triangular wave and program wave.
2.3.6control accuracy:the static control accuracy is 0.5%FS,and the typical value of dynamic control accuracy is 1%FS
2.3.7 limit parameter setting function.
3. Main technical indicators:
1). Actuator
actuator travel 150mm
actuator structure Electric servo
maximum dynamic test force of single servo cylinder 1000N
dynamic fluctuation: no more than ± 1% FS.
maximum linear speed 200mm / S
2). Test force measurement system
signal generator frequency 10Hz
load sensor is used to realize non inertial measurement of test force.
measurement accuracy of test force: ± 1%
test force measurement range: 2 ~ 100% FS (continuous full range measurement)
test force value display: the computer screen displays the straight reading in real time.
3). Deformation measurement system
measure the deformation within the gauge distance of the sample with a deformation sensor.
deformation measurement range: 2 ~ 100% FS (continuous full range measurement)
deformation measurement error: 0.5% FS
deformation display: the computer screen displays the straight reading in real time.
4). Displacement measurement system
the indicated value is displayed on the computer screen.
displacement range: 150mm (determined by actuator travel)
displacement measurement resolution: 2 μ m
measurement error: ±2 μ m
5). Speed control
① Equal rate control of test force: 1～100%FS/min
control scope: 2～100%FS
constant rate control accuracy: ± 1% set value
② Constant deformation rate control: 1～100%FS/min
control scope: 2～100%FS
constant rate control accuracy: ± 1% set value
③ Displacement constant rate control:
constant rate control accuracy: ± 1% set value
④ Control accuracy of constant test force, constant deformation and constant displacement rate: ± 1% set value
Note: the technical parameters of the system fully meet the requirements of relevant national standards.
Servo motor (Panasonic, Japan)
Servo driver (Panasonic, Japan)
Motor power: 1kw
Maximum speed of motor: 3000 rpm
Rated voltage: 220V
Operating frequency: 50Hz
Servo linear actuator (Shanghai Yichen)
Shape No.: sfg-g4-100-12-z
maximum test space: 700mm.
distance between columns: 500mm.
it can work continuously for more than 500 hours
4. System configuration list: see attached table
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Entry name
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Quantity
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1
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Host
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Frame (including column, beam, workbench, etc.)
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1
|
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Servo linear actuator
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3
|
|
Servo system
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3
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Load sensor
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3
|
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Test piece tooling
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4
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Locking clamp block
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1
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2
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All digital servo controller
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3
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3
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Test application software package
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1
|
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4
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IPC
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1
|
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5
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Supporting printer
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1
|
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6
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Signal line and connecting cable
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1
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5、 List of options: None
6、 Price: see commercial contract
7、 Supply period: see the commercial contract.
8、 Confidentiality of technical information and data:
1）. This technical scheme belongs to the technical data of our company. The user shall bear the obligation of confidentiality for the technical information and data provided by us. Whether this scheme is adopted or not, this clause is valid for a long time.
2）. We shall also bear the obligation of confidentiality for the technical information and data provided by users.
3）. Non human operation damage, unconditional warranty for 1 year
9、 Others:
1）. The user shall provide the incoming cable, and we will provide relevant technical indicators.
2）. Anything not described in the technical proposal shall be determined by both parties through negotiation.
山東國量儀器設(shè)備有限公司
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