A Hierarchical Supervisor Scheme for a Parametric Flexible Chain/Ring Manufacturing Floor
摘要
In the present paper, using input-output models of manufacturing machines in Discrete Event System (DES) form, flexibility of a manufacturing floor adopting two scenarios is studied. The manufacturing floor has a parametric number of machines, while the two architectures are the open chain architecture and the ring architecture. Developing a parametric number of embedded supervisors, based on the cooperative pair approach, and intelligent machine vision system, dedicated to product inspection, as well as by developing two switching supervisors, the two-case flexibility of the manufacturing floor is accomplished. This way, a two-level hierarchical supervisor control scheme is proposed. Finally, implementation of the supervisors in CODESYS is presented.