Variable abstraction and approximations in supervisory control synthesis
Teoxeira, M., Malik, R., Cury, J. E. R. De Queiroz, M. H. (2013). Variable abstraction and approximations in supervisory control synthesis. In Proceedings of American Control Conference (ACC'13), Washington DC, USA (pp. 132-137). Washington, DC, USA: IEEE.
Permanent Research Commons link: https://hdl.handle.net/10289/8091
This paper proposes a method to simplify Extended Finite-state Automata (EFA) in such a way the least restrictive controllable supervisor is preserved. The method is based on variable abstraction, which involves the identification and removal of irrelevant variables from a model. Variable abstraction preserves controllability, and the paper shows how approximations can be used to ascertain least restrictiveness of the synthesis result. The approach has the modelling benefits of Extended Finite-state Automata, leads to optimal control solutions, and reduces the synthesis cost. An example of a manufacturing system illustrates the contributions.
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