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

• Main Authors: Ngo, Quang Ha, Seow, Kiam Tian
• Other Authors: School of Computer Engineering
• Format: Article
• Language: English
• Published: 2016
• Subjects: Discrete-event systems (DESs); formal languages and automata; hierarchical control; online supervision
• Online Access: https://hdl.handle.net/10356/81721; http://hdl.handle.net/10220/39672
• Institution: Nanyang Technological University

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.