Reconciling scenario-centered controller design with state-based system models.

Scenarios are an effective means for defining the expected behavior of a system during the design and implementation phase. The 'Come Let's Play' approach has demonstrated that scenarios can fully define a system's behavior. In practice, however, the expected behavior defined by scenarios must be achieved in the context of existing components that cannot be changed. Therefore, the scenario-based approach must be reconciled with state-based models. In this paper, we present such an approach for the design of flexible production systems which employs scenarios not only for describing and synthesizing the required system functionality but also for recording observed behavior for analysis or 3D-visualization. We illustrate our approach using an existing material flow system which is a major part of a real production system.