A Colored Petri Net - based Approach to the Design ofControllers 1
نویسندگان
چکیده
In this paper, we extend the supervisory control theory and a supervisor synthesis problem to a class of colored Petri nets. More speciically, we investigate the forbidden state control problem with full observation in which the discrete-event system is modeled as a colored Petri net with a symmetry speciication. This problem is decidable if the colored Petri net has nite color sets and bounded places. A new algorithm for deriving a controller is presented in detail with a proof of its cor-rectness. Unlike conventional algorithms that explore the entire reachable set of states, our algorithm avoids an exhaustive search of the state space by exploiting a symmetry speciication. It performs particularly well when applied to large but structured processes with similar components. Furthermore, this approach allows to represent a controller in a compact form.
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