1. The first is the measurement and control system (that is, software and hardware) of the testing machine. At present, the measurement and control system of most rally machines on the market adopts 8-bit single-chip microcomputer control, the sampling rate is low, and the anti-interference ability is poor, and the other is AD conversion. If the number of bits in the AD converter is also low resolution. Then the measurement will not be accurate. The open source instrument's measurement and control system uses the world's most advanced 32-bit ARM technology controller HytestV6.0. This controller is based on the 32-bit ARM platform, and runs the company's multi-tasking operating system, which is a more stable program. The system is more stable. The sampling rate can reach 200 times per second. With the addition of 24-bit high-precision low-noise high-speed AD converter, the whole measurement and control system is more precise, and the stability is controlled throughout the whole test process. The software of the upper computer is the time of the open source instrument. The all-digital three-bicycle control software developed in 2 years has two control modes: a.PID control adjustment mode b. Mold Lake control adjustment method (the first in the industry). The whole test process can achieve constant force value control, constant displacement control, constant deformation control, low frequency fatigue control, and arbitrary control of the program.

2. Secondly, the force value sensor of the testing machine, because the quality of the sensor determines the accuracy of the testing machine and the stability of the measuring force. At present, the small force value of the sensor for the tensile machine on the market generally uses the S-type sensor, and the general value of the wheel is used. For the spoke sensor, the inside of the sensor is generally a strain gauge. If the accuracy of the strain gauge is not high or the anti-aging ability of the fixed strain gauge is not good or the material of the sensor is not good, the accuracy and service life of the sensor will be affected. The imported sensor used in open source instruments is the world's most famous sensor manufacturer, the United States, which has high precision, good linearity and stable performance. It will not change for decades.

3. Next is the transmission system of the electronic universal testing machine. At present, some of the testing machine transmission systems on the market use reducers, and some use ordinary belts. The main drawbacks of these two transmission methods are: the former requires regular lubrication, after This kind of can not guarantee the synchronization of the transmission affects the test results. The test machine drive system of the open source instrument adopts full arc synchronous belt deceleration to ensure the synchronous precision of the transmission, high transmission precision, high efficiency, stable transmission, low noise, and long service life without maintenance.

4. Again, the ball screw that drives the movement of the sensor, because the test data made in the future if the screw has a gap will directly affect the maximum deformation and elongation after the test. At present, the electronic universal testing machine on the market has a T-shaped ordinary screw, so that the gap is relatively large, and the second is that the friction is relatively short and the service life is short. The screw used by Jiangdu Open Source Testing Machinery Factory is Germany. Li Nev's high-precision, non-clear ball screw has a surface hardening hardness of HRC58-62 and a service life of several decades. And to ensure the same accuracy.

5. Finally, the power source (motor) of the test machine is also called motor. At present, some test machines on the market use ordinary three-phase motor or variable frequency motor. This type of motor adopts analog signal control, which has slow control response and inaccurate positioning. The speed range is narrow. There is no high speed at high speed or low speed, and there is no high speed, and the speed control is not accurate. The motor used in open source instruments is Japan Panasonic full digital AC servo motor. The control method adopts full digital pulse control, and the speed range is wide, up to 0.001. -1000MM/MIN, accurate positioning, fast response, 0.01 seconds can be added to full speed, the motor can ensure full-scale speed control accuracy, and long service life, up to several decades, and no maintenance.

Uses: It can be used for metal, non-metal materials and components, products for tensile, compression, bending, shearing, peeling, tearing, low cycle, creep and other mechanical properties test. Can meet various test methods and standards such as ISO.GB.JIS.ASTM.DIN.

Features:

●Multiple automatic control: with constant load, constant rate, constant stress, constant strain and other control methods.

●Automatic switching function: During the test, the range is automatically changed according to the test force and deformation size.

● Automatically store test data to reproduce test results and parameter curves.

● Automatic continuous test, and comprehensive statistical processing of all test data of the same batch.

● Statistical analysis projects are complete: there are maximum, minimum, average, standard deviation, coefficient of variation, etc. Optional, automatic processing of printing as needed.

● Curve processing can be freely scaled, overlapped, scaled, and rotated preview. A graph of the relationship of multiple or all specimens can be drawn at the same time.

● Data editing and report programming can be done at will according to user needs. Wide measuring range, can support multiple sensors.

● It can be controlled manually, convenient for special needs, multiple protection, safe and reliable operation.

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