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Some observations on supervisory policies that enforce liveness in partially controlled Free-Choice Petri nets

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  • Sreenivas, Ramavarapu S.

Abstract

Every arc from a place to a transition in a Free-Choice Petri net (FCPN) is either the unique output arc of the place, or, the unique input arc to the transition [M.H.T. Hack, Analysis of production schemata by Petri nets, Master’s thesis, Massachusetts Institute of Technology, February 1972; W. Reisig, Petri Nets, Springer-Verlag, Berlin, 1985; T. Murata, Petri nets: properties, analysis and applications, Proc. IEEE 77 (4) (1989) 541–580]. We consider FCPNs that are not live [J.L. Peterson, Petri Net Theory and the Modeling of Systems, Prentice-Hall, Englewood Cliffs, NJ, 1981; W. Reisig, Petri Nets, Springer-Verlag, Berlin, 1985; T. Murata, Petri nets: properties, analysis and applications, Proc. IEEE 77 (4) (1989) 541–580], and we investigate the existence of supervisory policies that can enforce liveness in partially controlled FCPNs. The external agent, or supervisor, can only prevent the firing of some (i.e. not all) transitions in a partially controlled FCPN.

Suggested Citation

  • Sreenivas, Ramavarapu S., 2006. "Some observations on supervisory policies that enforce liveness in partially controlled Free-Choice Petri nets," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 70(5), pages 266-274.
    • Handle: RePEc:eee:matcom:v:70:y:2006:i:5:p:266-274
    DOI: 10.1016/j.matcom.2005.11.002
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    Keywords

    Supervisory control; Petri nets;

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