1 research outputs found
Computation of Controllable and Coobservable Sublanguages in Decentralized Supervisory Control via Communication
In decentralized supervisory control, several local supervisors cooperate to
accomplish a common goal (specification). Controllability and coobservability
are the key conditions to achieve a specification in the controlled system. We
construct a controllable and coobservable sublanguage of the specification by
using additional communications between supervisors. Namely, we extend
observable events of local supervisors via communication and apply a fully
decentralized computation of local supervisors. Coobservability is then
guaranteed by construction. Sufficient conditions to achieve the centralized
optimal solution are discussed. Our approach can be used for both prefix-closed
and non-prefix-closed specifications