Fuzzy PID Control Of Oil Pressure And Water Pressure Balance In Hydraulic Pressure Testing Machine

In the 21 st century, with the rapid development of industry and progress of science and technology of the people’s Republic of China, the copper pipe as a common material has been widely used in aviation, navigation, national defense and other important areas, so the production specifications, models, quality index has a strict requirements, especially the pipe quality on the development of each industry plays an important role. Therefore, how to detect the quality of the pipe is up to the standard, and it has become a serious challenge for enterprises and their related fields. At present, industry recognition detection method is the hydraulic pressure test, by hydraulic testing machine of copper material for hydraulic pressure test can be found the existence of quality defects, to be improved, to ensure the quality of the copper material manufactured. In this paper, we mainly study the technological characteristics of the hydraulic test of copper material, and based on industrial control computer and PLC, detection and control system is established, to solve the problem of balance of hydraulic pressure and hydraulic pressure test in the process of tracking control; at the same time, this paper on the electro-hydraulic proportional valve characteristics is also analyzed, based on fuzzy control and traditional PID control are compared, the development of the fuzzy PID control strategy, and using MATLAB Fuzzy Control Toolbox off-line for the fuzzy control query table, through the use of STEP7 software of table look-up program design, in order to achieve the produce seal oil pressure force of the precise control of. In addition, this paper also detection of hydrostatic testing machine control system is discussed in this paper, the system is composed of industrial computer, PLC, sensors and other field instruments. At the same time, the development configuration of the man-machine interactive interface more humanistic. The system can dynamically reflects the value of the various parameters of the detection process, can store the copper pipe pressure curve, pressure time and the qualified and not to judge, in a certain extent for enterprises to find the parameters and quality tracking provides a convenient.In theory, hydrostatic testing machine for testing control system both the special requirements of the design of hardware and software can be very good to meet the pressure test process, can be an effective solution to the corresponding problem of testing process due to the seal force control is undeserved and cause. The maximum value is capable of timely and effective detection of bad products, to produce high specifications of copper material to provide technical support and economic benefits considerable. In the industry with great popularization value.