Towards learning by demonstration for industrial assembly tasks

Publication Type:
Chapter
Citation:
Annals of Scientific Society for Assembly, Handling and Industrial Robotics 2022, 2023, pp. 229-239
Issue Date:
2023-07-10
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In recent times, learning by demonstration has seen tremendous progress in robotic assembly operations. One of themost prominent trajectory-level taskmodels applied isDynamic Movement Primitives (DMP). However, it lacks the ability to tackle complex operations as often encountered in industrial assembly. Augmenting low-level models with a highlevel framework in which different movement segments are deliberately parameterised is considered promising for such scenarios. This paper investigates the combination of trajectory-level DMPs with Methods-Time Measurement (MTM). We demonstrate how theMTM-1 system is utilised to establish distinguished DMP models for five of its basic elements, paving the way to benefitting from the sophisticated MTM system. The evaluation of the framework is conducted on a generic pick and place operation. Compared to a one-model-fits-all DMP approach for the whole task, the proposed method shows the advantage of appropriate temporal scaling, accuracy levelling and force consideration at adequate times.
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