Study On The Transformation Of Hydraulic Universal Material Testing Machine Based On General Hardware Platform

Mechanical properties of the progress made the experimental mechanical properties of new requirements. GB/T228-2010 standard test machine must have three closed-loop control. A large number of old-fashioned hydraulic test machine does not meet the requirements .The current transformation of a large number of experimental aircraft program to use more special controller module, the modified test machine maintenance, upgrades, and software to expand the initiative in all of the factory control. With computer technology's, control technology's and sensor technology's development, common hardware platform is also increasingly powerful and convenient. Technology-based virtual instrument measurement equipment upgrades to bring a good feasibility.For large quantities of equipment WE-60 type universal testing machine, explore the use of common hardware platform constitutes a complete set of hydraulic universal testing machine computer automated measurement and control system, and modernization of old test machine .After transformation, the three closed-loop system can achieve automatic control, automatic processing of data, improve control and accuracy to meet the national standard requirements. This common hardware platform based on equipment modification techniques have been used for other types of hydraulic test machine system, but also the transformation and maintenance of similar equipment to provide a new way of thinking.In the WE-60 type 60-ton universal testing machine structure, working principles, in particular loading system and measuring system based on the analysis, combined with the new national standards, based on the WE-60 universal testing machine the transformation of the control system hardware design of the system, respectively, the system sensors and control valves, data acquisition systems, signal conditioning circuitry and other hardware system was studied in detail and selection.Combination of system control requirements of the relevant PID Algorithm and its related categories, to explore the combination of fuzzy control with the feasibility study, design fuzzy PID control algorithm based on the application of system control programs.According to the system hardware design and system control design, design and development of the system control software, through the control software, can achieve real-time monitoring, curve analysis, automated control.Thesis work for the old test machine for automated transformation to meet the needs of the new period, the transformation provides a useful experience.