Command and Control of Discrete-Event Systems: Towards Online Hierarchical Control Based on Feasible System Decomposition

A new operational design for hierarchical control of discrete-event systems is proposed. The design brings the structure of command and control from concept to realization for online control operation. For a command reference input, a new concept for output control feasibility of a discrete-event system modeled by a Moore automaton is characterized; and a system decomposition of a suitably structured Moore automaton into a controllable subsystem and an uncontrollable subsystem is formulated. Based on these results, the new command and control design for controller operation is realized, examined, and discussed.ASTAR (Agency for Sci., Tech. and Research, S’pore)Accepted versio