Hydraulic Pendulum Pressure Testing Machine Automatic Constant Speed Improvement Of Loading

The hydraulic pendulum material testing machine is a test instrument and equipment for testing, evaluating and studying the physical properties, mechanical properties and mechanical properties of materials, components and various engineering components. It is a very important kind of test in many kinds of scientific instruments. instrument. For a long time, testing machine is widely used in metallurgy, construction, machinery, transportation and other industries.With the continuous development of automatic control technology at home and abroad, the intelligent requirements of measurement equipment has become the main goal of the current scientific field. In the past, the measurement equipment of pure mechanical transmission can not meet the needs of the situation. Hydraulic testing machine testing technology has been developed at home and abroad, and proposed a new type of measuring equipment combined with machine-electric-liquid combination. The new type of testing machine has high automation level, easy operation, high reliability, good stability and high precision Force measurement system and computer control and acquisition and processing technology, the function greatly exceeds the traditional testing machine, in the test accuracy, stability and operability than the traditional testing machine has been greatly improved to meet the user multi-faceted Test requirements.The traditional hydraulic pendulum pressure testing machine has the advantages of low measurement precision, unable to control the loading speed accurately, and can not record in real time. The test data should be manually calculated and the degree of automation is low,to meet the needs of rapid development of testing.Hydraulic pendulum pressure test machine automatic fixed speed of the transformation is in the traditional pressure testing machine installed in the oil pressure sensor, electro-hydraulic proportional valve, through the microcontroller control, so that it can perform automatic fixed speed loading, thus The traditional manual pressure testing machine transformed into a general performance of electronic pressure testing machine. After the intelligent transformation of the pressure testing machine with automatic detection function, improve the test efficiency and test accuracy, and to achieve further laboratory computer network to lay a certain foundation.Based on the structure and hydraulic control principle of the medium hydraulic testing machine,the paper analyzes the optimal position of the pressure sensor, and then completes the overall scheme design of the system based on the single chip microcomputer. And then through the design and analysis of elastic sensitive components, as well as the pressure sensor system module error analysis, the final choice of the higher cost of the pressure sensor. Then, the hardware module of the pressure testing machine is researched and selected, the measurement and control software to take modular design.at last the software development of the intelligent upgrading and upgrading of the testing machine is completed. The test error of the modified pressure testing machine and the indication repeatability were tested according to the verification rules, and the uncertainty of the measurement results was analyzed and evaluated.A large number of detailed test data sheet: intelligent transformation of the pressure test machine after the technical indicators have reached the design of the initial target, in line with the relevant verification procedures.In the data acquisition system reserved for the RS232 port, to further upgrade the computer to provide the conditions.In this paper, the traditional hydraulic pressure testing machine automatic completion of the transformation of the fixed speed for the future transformation of other testing machine provides a useful experience.