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Nonblocking Hierarchical Control of Decentralized Discrete Event Systems

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3 Author(s)
Schmidt, K. ; Dept. of Autom. Control, Univ. of Erlangen- Nuremberg, Erlangen ; Moor, T. ; Perk, S.

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.

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Automatic Control, IEEE Transactions on  (Volume:53 ,  Issue: 10 )