作为顺序函数图的离散事件系统的执行

Proceedings of the 2001 IEEE International Conference on Control Applications (CCA'01) (Cat. No.01CH37204) Pub Date : 2001-09-05 DOI:10.1109/CCA.2001.973903

A. Hellgren, Martin Fabian, B. Lennartson

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引用次数: 9

摘要

监控理论(SCT)和它在可编程逻辑控制器(plc)中的实现之间的过渡并不是直截了当的。这主要是因为SCT是在基于事件的异步设置中声明的，而plc是基于信号和同步的。基于Petri网的PLC编程语言顺序功能图(SFC)是这种过渡的理想选择。然而，过渡需要详细了解PLC和sfc的工作原理。我们提出了不同的sfc执行模型，并与国际标准IEC 1131-3进行了比较。

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On the execution of discrete event systems as sequential function charts

The transition between the supervisory control theory (SCT) and its implementation in programmable logic controllers (PLCs) is not straightforward. This is mainly due to the fact that the SCT is stated in an event based asynchronous setting whilst PLCs are signal based and synchronous. Based on Petri nets the PLC programming language, the sequential function chart (SFC), is an ideal choice for this transition. However, the transition requires detailed knowledge of how the PLC and SFCs work. We present different execution models for SFCs and compare them with the international standard IEC 1131-3.

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Proceedings of the 2001 IEEE International Conference on Control Applications (CCA'01) (Cat. No.01CH37204)

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