Hierarchical Supervisory Control Based on Discrete Event Systems With Flexible Marking

• Published in: IEEE transactions on automatic control Vol. 52; no. 12; pp. 2242 - 2253
• Main Authors: da Cunha, A.E.C., Cury, J.E.R.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-12-2007; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Automatic control; Computer science; control theory; systems; Consistency; Control system synthesis; Control systems; Control theory. Systems; Discrete event systems; Discrete event systems (DES); Exact sciences and technology; Explosions; Flexibility; hierarchical control; Large-scale systems; Manufacturing systems; Modelling and identification; Robust control; Standards development; State-space methods; Supervisory control; Discrete event systems (DES); Hierarchical control; Consistency; supervisory control; Level control; Modeling; Supervision; Discrete event system
• ISSN: 0018-9286; 1558-2523
• DOI: 10.1109/TAC.2007.910653

This paper proposes a two-level hierarchical supervisory control scheme for a discrete event system (DES), where the low-level is represented in the standard Ramadge-Wonham framework and the high level is represented by a DES with flexible marking (DESFM). As shown, the flexibility in the definition of marking provided by a DESFM simplifies the modeling of the high-level marking behavior. This approach, when compared with other approaches, requires less events and states to model the high-level, while guaranteeing hierarchical consistency.