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Synchronised Execution of Discrete Event Models Using Sequential Function Charts

Anders Hellgren (Institutionen för signaler och system, Reglerteknik och automation) ; Martin Fabian (Institutionen för signaler och system, Reglerteknik och automation) ; Bengt Lennartson (Institutionen för signaler och system, Reglerteknik och automation)
Proceedings of the 38th IEEE Conference on Decision and Control, Phoenix, Arizona, USA (1999)
[Konferensbidrag, refereegranskat]

The discrepancy between the event based supervisory control theory and its signal based implementation in programmable logic controllers using sequential function charts is explored. Different execution models and the related problems are discussed. Specifically, synchronisation of sequential function charts is treated in the context of modular implementation of the control functions. The supervisory control theory requires that conflicting events are never generated. This is guaranteed by the synchronous execution of events present in all modules. However, in a signal based environment the synchronous “execution of events” is not well defined. We propose an event monitor to resolve this problem.

Denna post skapades 2006-09-12. Senast ändrad 2016-02-01.
CPL Pubid: 16044


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Institutioner (Chalmers)

Institutionen för signaler och system, Reglerteknik och automation (1900-2004)


Information Technology

Chalmers infrastruktur