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This work presents a hybrid liveness-enforcing method for a class of Petri nets, which can well model many flexible manufacturing systems. The proposed method combines the theory of elementary siphons with a characteristic structure-based method to prevent deadlocks and enforce liveness in a Petri net model. It can identify and remove redundant monitors from a liveness-enforcing supervisor designed...
In this paper, we extend the liveness characterization results on a subclass of Petri nets, L-S3PR. A polynomial algorithm is developed to decide whether a more general class of Petri nets, S3PR, has potential deadlocks, which can model a wide class of flexible manufacturing systems (FMS). The concept of resource circuits and the way to find them from a net structure are proposed. We show an approach...
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