Discussion on: Supervisory control of discrete event systems with flexible marking

M.P. Spathopoulos, J. Komenda

Research output: Contribution to journalArticlepeer-review


This paper proposes a new class of Discrete Event Systems endowed with control called DES with flexible marking (DESFM). The DESFM is modeled by a language and a control structure. The language contains all the strings of events that the system can generate. The control structure is a function that associates a set of controls to each string generated by the system. A control encapsulates information of event-enabling and marking for the string. The model is shown to be suitable for systems with abstraction for hierarchical control. The condition for existence of a supervisor and the synthesis of an optimal supervisory control scheme, in the sense of maximal permissiveness, are given. An illustrative example where the DESFM is naturally applied is presented.
Original languageEnglish
Pages (from-to)61-64
Number of pages3
JournalEuropean Journal of Control
Issue number1
Publication statusPublished - 2004


  • discrete event systems
  • flexible marking
  • control systems
  • hierarchical control
  • permissiveness
  • function decomposition


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