摘要: 基于模块化制造系统(MPS)的监控问题,提出了一种扩展的结构化三层次Petri网建模方法,把MPS系统从整体、局部再到细节进行不同层次的描述;使用消息库所来解决Petri子网间的通信问题。该建模方法,有效地降低了系统建模的复杂度,增强了开发的相应监控系统可靠性与可重用性。根据此模型开发MPS监控软件,验证了该建模方法的有效性。
关键词:
Petri网,
可重用性,
模块化制造系统,
监控
Abstract: Based on supervisory control problem of modular production system (MPS), a structured 3-layer extended Petri net(PN) is proposed, which describes the MPS in view of entire system, components and details respectively. The message-places are employed to solve communication problem among different sub-PNs. This method not only reduces the MPS modeling complexity efficiently, and enhances the reliability and reusability of the corresponding supervisory control system. Finally supervisory control software for the MPS is developed in terms of the PN modeling, to certify the effectiveness of this method.
Key words:
Petri net,
Reusability,
Modular production system,
Supervisory control
周 昕;杨根科. 结构化三层次Petri网及在MPS监控系统中的应用[J]. 计算机工程, 2007, 33(02): 197-199.
ZHOU Xin; YANG Genke. Structured Three-layer Petri Net and Application in MPS Supervisory Control[J]. Computer Engineering, 2007, 33(02): 197-199.