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Abstract
Riirining of flexible manufacturing systems (FMS) has pointed out an acute requirement of the production-monitoring function (PM). The system presented in this paper integrates the PM function into the FMS control and management all within a global architecture. Indeed the decisional system is assumed to be hierarchical. A new cooperation protocol among the various levels is modeled by means of an interpreted colored Petri net (ICPN) thanks to a sensitivity range concept associated with each level. The shop floor control coordination is also ensured by an ICPN. Finally, in order to link both the decisional and the shop floor control systems, every component of the whole system is regarded as an object and the objects communicate via messages (objected-oriented design). Daemons allow the system consistency and some of them are defined thanks to the sensitivity range notion.
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