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Nonblocking Hierarchical Control of Decentralized Discrete Event Systems

2008-11-01
Schmidt, Klaus Verner
MOOR, THOMAS
PERK, SEBASTIAN
This contribution investigates the hierarchical control of decentralized discrete event systems (DES) that are synchronized by shared events. A hierarchical control architecture providing hierarchical consistency is introduced. Moreover, it allows for composition of decentralized subsystems on the high-level of the hierarchy and hence reduces the computational complexity of supervisory control synthesis for language inclusion specifications. In this context, a crucial issue is the nonblocking operation of the overall system. Our main theorem identifies sufficient conditions for this desirable property.