Modular Design Method for Cell Controller based on Colored Petri Net

• Main Authors: Yi-Jen Lin, 林怡仁
• Other Authors: 陳凱瀛
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/wad6qy

碩士 === 國立臺北科技大學 === 工業工程與管理系所 === 93 === Design of Flexible Manufacturing System’s controller is important for whole factory’s operation. The good design of the controller makes production time reduce, machine’s utilization promote and parts’ conflict avoid. In order to design the good controller, it is necessary to build the modules which can simulate the manufacturing situation and configure them according to real state. In order to build the modules that can simulate the manufacturing situation, this research adopts Colored Petri Net as the construction and analysis tools. Colored Petri Net has mathematics foundation and system analysis abilities, mainly applying to the description of the cause-effect relationships among the events. The Manufacturing systems adopt the distributed control, and the control system was divided into cell level and workstation level. The cell level has the Cell Controller, and the workstation level has many group controllers. Every group was divided into many control modules to reduce the workload of the main controller. Petri Net models of many kinds of machines, such as Radio Frequency Identification module, Computer Numerically Controlled module, Material Handling System module…etc are contructed firstly. When new systems are need to design in the future, we can use the modules which have already been constructed, refine and use them to simulate the behaviors of new system. After analyzing the behaviors of systems, we can design control program based on the Logic of Petri Nets. In this paper, Visual Basic is adopted as the high-level program language to design the control program.