Rapidly changing market requirements and shorter product lifecycles demand production systems that are able to cope with frequently changing resources, production-unit capabilities, and product requirements. In this work we provide a framework for such systems, with a focus on identifying some of the key features of a practical language for specifying the production steps, and exploring how and when production-unit capabilities should be built. We motivate the proposed framework with an assembly scenario, which we have implemented on an industrial production system.
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