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Decentralized Control of Petri Nets Marian V. Iordache and Panos J. Antsaklis

Summary: Decentralized Control of Petri Nets
Marian V. Iordache and Panos J. Antsaklis
Supervision based on place invariants (SBPI) is an efficient technique for the supervisory
control of Petri nets. In this paper we propose extensions of the SBPI to a decentralized control
setting. In our setting, a decentralized supervisor consists of local supervisors, each controlling
and observing a part of the Petri net. We consider both versions of decentralized control, with
communication, and with no communication. In the case of communication, a local supervisor
may receive observations of events that are not locally observable and send enabling decisions
concerning events that are not locally controllable. In the first part of the paper we propose
efficient algorithms for the design of decentralized supervisors, based on the extension of the
SBPI concept of admissibility that we define. Then, in the second part of the paper, we propose
the design of decentralized supervisors based on transformations to admissible constraints. The
feasibility of this problem is demonstrated with a simple integer programming approach. This
approach can incorporate communication between local supervisors as well as communication
1 Introduction
The decentralized control of discrete event systems (DES) has received considerable attention in
the recent years [13]. The current research effort has been focused on the automata setting, and has
considered both versions of decentralized control, with communication and with no communication.


Source: Antsaklis, Panos - Department of Electrical Engineering, University of Notre Dame


Collections: Engineering