A Hierarchical Model to Enable Plan Reuse and Repair in Assembly Domains
2021
The manufacturing world is moving towards a setup with high mix and medium volume. This requires new production paradigms. The World Robotics Challenge (2018 & 2020) was designed to challenge teams to design systems that are easy to adapt to new tasks and to ensure robust operation in a semi-structured environment. We present a layered strategy to transform missions into tasks and actions and provide a set of strategies to address simple and complex failures. We propose a model for characterizing failures using this model and discuss repairs. Simple failures are by far the most common in our WRC system and we also present how we repaired them.
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