AOI motion control system based on graph programming
CHEN Guolong1, ZHONG Jing2, ZHANG Zhengrong2, WU Huifeng1
(1.College of Computer,Hangzhou Dianzi University, Hangzhou 310018, China;
2.ZHEJIANG OUI Technology, Wenzhou 325000, China)
Abstract: As nowadays AOI are always using PCbased motion control systems, whose motion control function is fixed, nonprogrammable, in the long process with embracing PC crashing, thread blocking and other issues. Aiming at the problem, a graphbased programming, four procedural frameworks PCBAOI motion control system design was proposed. Firstly, the system′s hardware and software architecture was introduced. Secondly, the graph programming principles of motion control function was elaborated, which contained setting motion parameters, state flag, the motion command to realize the control of the motion process in the main CPU memory. And the interaction between DLL layer and the ladder layer via serial communication was discussed ,which adopted the main request/response model to ensure the communication′s security and stability. A sharing memory implementation was used between the ladder layer and hardware driver implementation to realize data interaction. Finally, it was applied for PCBAOI motion control systems. The results indicate that motor function of the system stable, high precision, programmable strong and worth popularizing.
Key words: automatic optic inspection(AOI); graph programming; motion controller; memory sharing