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Design of Asynchronous Supervisors

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Executive Summary

One of the main drawbacks while implementing the interaction between a plant and a supervisor, synthesised by the supervisory control theory of Ramadge and Wonham, is the inexact synchronisation. Balemi was the first to consider this problem, and the solutions given in his PhD thesis were in the domain of automata theory. The authors' goal is to address the issue of inexact synchronisation in a process algebra setting, because the authors get concepts like modularity and abstraction for free, which are useful to further analyze the synthesised system. In this paper, they propose four methods to check a closed loop system in an asynchronous setting such that it is branching bisimilar to the modified (asynchronous) closed loop system.

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