A data aggregation framework for multi-level production system control

The management of production systems requires a hierarchy of decision levels allowing a multi-level planning and scheduling process. To be able to perform its control tasks, each decision center needs a set of technical data (static, dynamic) relating to the operative system. Here, a formal framework is proposed to lead various data aggregation in production management. The path of an aggregation process is captured in a 2-dimensional referential combining the basic directions of aggregation : resource and task