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The Real-time Colored Petri Net (RTCPN), a modification of traditional Colored Timed Petri net, is proposed to describe virtual factory. In RTCPN, firing discipline differs from traditional way in that the concept of time-enabled transition is introduced to implement real-time simulation. In this paper, we address how to describe virtual factory using RTCPN model. Combined with block diagram, the concept of virtual place is also proposed to model large-scale factory rapidly and conveniently. At last, a Java-built-in implementation of RTCPN tool is developed and a Printed-Circuit-Board factory is given to investigate time cost of developed tool. Concurrent feature of RTCPN is also discussed to decrease simulation time and improved results shows its effectiveness.
Emerging Technologies and Factory Automation, 2003. Proceedings. ETFA '03. IEEE Conference (Volume:1 )
Date of Conference: 16-19 Sept. 2003