Compositional Performance Prediction for Tightly Coupled Manufacturing Systems
report
In this report, we have described a domain model for the timing behaviour of production systems consisting of multiple connected units. The domain model consists of four domain-specific languages: The Material language specifies the materials to be handled by a production system and the operations that can be performed on these materials. The Equipment language describes the topology of a production system in terms of the processing stations and their connections. The Job language specifies the batch of work to be performed by the production system in terms of products, parts and subparts. The Allocation language specifies how the work is assigned to the available processing stations and the order in which the work is to be executed. The report describes a transformation from instances of the domain model to constraint graphs, a constraint model involving relative timing constraints between events. These constraint graphs can be used to derive a schedule for the allocated work. Constraint graph analysis can also be used for a modular timing analysis: the constraints of one system unit are combined into constraints for the arrivals of work at the unit’s inputs and these constraints are added to the constraints of the upstream unit as constraints on the arrival at the upstream unit’s outputs.
Topics
TNO Identifier
991639
Publisher
TNO - ESI
Collation
43 p.
Place of publication
Eindhoven