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Autonomous Robots

, Volume 42, Issue 5, pp 997–1009 | Cite as

Skill-based human–robot cooperation in tele-operated path tracking

  • Nima Enayati
  • Giancarlo Ferrigno
  • Elena De Momi
Article
Part of the following topical collections:
  1. Special Issue: Learning for Human-Robot Collaboration

Abstract

This work proposes a shared-control tele-operation framework that adapts its cooperative properties to the estimated skill level of the operator. It is hypothesized that different aspects of an operator’s performance in executing a tele-operated path tracking task can be assessed through conventional machine learning methods using motion-based and task-related features. To identify performance measures that capture motor skills linked to the studied task, an experiment is conducted where users new to tele-operation, practice towards motor skill proficiency in 7 training sessions. A set of classifiers are then learned from the acquired data and selected features, which can generate a skill profile that comprises estimations of user’s various competences. Skill profiles are exploited to modify the behavior of the assistive robotic system accordingly with the objective of enhancing user experience by preventing unnecessary restriction for skilled users. A second experiment is implemented in which novice and expert users execute the path tracking on different pathways while being assisted by the robot according to their estimated skill profiles. Results validate the skill estimation method and hint at feasibility of shared-control customization in tele-operated path tracking.

Keywords

Shared-control Active constraints Virtual fixtures Tele-operation Machine learning Surgery 

Notes

Acknowledgements

This work has received funding from the European Union’s Horizon 2020 research and innovation program under Grant agreement no. H2020-ICT-26-2016-1-732515 (SMARTsurg project).

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Copyright information

© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  1. 1.Department of Electronics, Information and BioengineeringPolitecnico di MilanoMilanItaly

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