Abstract
Consider the situation where the controller is not allowed to influence certain transitions in the plant Petri net. It is illegal (in most cases1) for the Petri net controller to include an arc from one of the controller places to any of these uncontrollable plant transitions, because these arcs are the mechanism by which the controller exerts its power to inhibit events.
Article FootNote
A controller may contain arcs to an uncontrollable transition if the controller never acts to inhibit that transition when it is otherwise enabled. See section 4.1 for details. Corollary 4.8 provides a condition under which these kinds of arcs are permitted.
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© 1998 Springer Science+Business Media New York
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Moody, J.O., Antsaklis, P.J. (1998). Uncontrollable and Unobservable Transitions. In: Supervisory Control of Discrete Event Systems Using Petri Nets. The International Series on Discrete Event Dynamic Systems, vol 8. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-5711-1_4
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DOI: https://doi.org/10.1007/978-1-4615-5711-1_4
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