Modelling and simulation of automated manufacturing systems for evaluation of complex schedules

Chulhan Kim, Tae Eog Lee

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


Automated manufacturing systems have been studied widely in terms of scheduling. As technology evolves, the behaviour of tools in automated manufacturing systems has become complicated. Therefore, mathematical approaches to the analysis of complex schedules no longer reflect reality. In this paper, we propose a systematic way of conducting simulation experiments to evaluate the complex operating schedules of automated manufacturing systems. A simulation model is based on a timed Petri net to take advantage of its mathematical strength. Since a Petri net cannot itself have token firing rules, we introduce additional states called operational states. Operational states are not directly related to a Petri net, and are only used for decision making. In addition, a decision function that is responsible for the conflict resolution of a Petri net model and an operational state transition function are introduced. The parallel simulation concept is also suggested by dividing a Petri net into several independent decision sub-nets. A multi-cluster tool system for semiconductor manufacturing is analysed as an application.

Original languageEnglish
Pages (from-to)3734-3747
Number of pages14
JournalInternational Journal of Production Research
Issue number12
StatePublished - 1 Jun 2013


  • Petri net simulation
  • Petri nets
  • automated manufacturing systems
  • discrete event simulation
  • scheduling


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