The Research Of A Control System For The New Type Of Testing Antifracture Machine

The paper regards the mechanical segment of the new type of Testing Antifracture Machine provided by Ningxia Machinery Research Institute as research object. Based on the modern control theory, SCM technology, and servo motor control technology, the paper realizes the design of the control system, and accomplishes the development and debugging of the core of testing control system—testing controller. New type of Testing Antifracture Machine is a kind of material Testing Machine with high precision, which is mostly used to test the largest intensity of all kinds of material in the state of equal load.The paper introduces the structure of control system of the new type of Testing Antifracture Machine. The control system realizes the control of the testing process and pressure servo. It's provided with several characters as followed: precise pressure measure and control, good real time, adoption of advanced SPI series bus and double controller cooperation working model.Testing controller adopts the idea of modularization design. With 320×240 graphic dot-matrix LCD, 4MB FLASH memory, Testing controller can display data curve and shift the screen; Using 24 bits A/D converter, It realize the high precise pressure measure. The software includes the gearshift integral PID arithmetic, the displaying module of data curve and Chinese characters in the LCD, and control arithmetic of keyboard. For increasing the degree of system integration, the system uses one bus series communication protocol devised by the author himself between master and slaver controller. There being many disturbance elements in the control system, some anti-disturbance measures are applied in the measure tunnels and control tunnels.The paper provides the results of the debugging and analysis of the control system.