Decentralized Supervisory Control of a Distributed Filling Shop Using Standardized Models

This paper deals with the application of the decentralized supervisory control approach to a complex, event-driven filling shop. Due to complexity reduction and for simplicity, the modeling is done in terms of subsystem composition and by using standardized models. The latter one increases the reusability of subsystem models and reduces the gap between current modeling methodologies and the object- oriented paradigm. Standardized models for plant description representing either repetitive hardware components or their linkage are strictly separated, thus their instances can be used as basic building blocks to create the global plant model. In analogy to [1], the achieved decentralized supervisory control is implemented using programmable logic controllers and a standard PC as well as TCP/ IP for communication and Internet-based remote control. The desired controlled plant behavior is verified by Gantt charts recorded during operation.