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Safety assessment review of a dressing assistance robot

Delgado Bellamy, Daniel; Chance, Gregory; Caleb-Solly, Praminda; Dogramadzi, Sanja

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Authors

Gregory Chance

Praminda Caleb-Solly



Abstract

Hazard analysis methods such as HAZOP and STPA have proven to be effective methods for assurance of system safety for years. However, the dimensionality and human factors uncertainty of many assistive robotic applications challenges the capability of these methods to provide comprehensive coverage of safety issues from interdisciplinary perspectives in a timely and cost-effective manner. Physically assistive tasks in which a range of dynamic contexts require continuous human–robot physical interaction such as e.g., robot-assisted dressing or sit-to-stand pose a new paradigm for safe design and safety analysis methodology. For these types of tasks, considerations have to be made for a range of dynamic contexts where the robot-assistance requires close and continuous physical contact with users. Current regulations mainly cover industrial collaborative robotics regarding physical human–robot interaction (pHRI) but largely neglects direct and continuous physical human contact. In this paper, we explore limitations of commonly used safety analysis techniques when applied to robot-assisted dressing scenarios. We provide a detailed analysis of the system requirements from the user perspective and consider user-bounded hazards that can compromise safety of this complex pHRI.

Journal Article Type Article
Acceptance Date May 20, 2021
Online Publication Date Jun 14, 2021
Publication Date Jun 14, 2021
Deposit Date Jun 15, 2021
Publicly Available Date Jun 17, 2021
Journal Frontiers in Robotics and AI
Electronic ISSN 2296-9144
Publisher Frontiers Media
Peer Reviewed Peer Reviewed
Volume 8
Article Number 667316
DOI https://doi.org/10.3389/frobt.2021.667316
Keywords Assistive Robotics
Public URL https://uwe-repository.worktribe.com/output/7473185
Publisher URL https://www.frontiersin.org/articles/10.3389/frobt.2021.667316/full

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