Pena, P. N., Bravo, H. J., da Cunha, A. E. C., Malik, R., Lafortune, S., & Cury, J. E. R. (2014). Verification of the observer property in discrete event systems. IEEE Transactions on Automatic Control, 59(8), 2176–2181. http://doi.org/10.1109/TAC.2014.2298985
Permanent Research Commons link: https://hdl.handle.net/10289/9360
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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