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Verification of the Observer Property in Discrete Event Systems

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6 Author(s)
Pena, P.N. ; Dept. de Eng. Eletron., Univ. Fed. de Minas Gerais, Belo Horizonte, Brazil ; Bravo, H.J. ; da Cunha, A.E.C. ; Malik, R.
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The observer property is an important condition to be satisfied by abstractions of Discrete Event System (DES) models. This technical note presents a new algorithm that tests if an abstraction of a DES obtained through natural projection has the observer property. The procedure, called OP-Verifier, can be applied to (potentially nondeterministic) automata, with no restriction on the existence of cycles of “non-relevant” events. This procedure has quadratic complexity in the number of states. The performance of the algorithm is illustrated by a set of experiments.

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Automatic Control, IEEE Transactions on  (Volume:59 ,  Issue: 8 )