Safety Assessment Review of a Dressing Assistance Robot.

Safety Assessment Review of a Dressing Assistance Robot.
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安全评估审查机器人。

DOI:
10.3389/frobt.2021.667316
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发表时间:
2021
影响因子:
3.4
通讯作者:
Dogramadzi S
Dogramadzi S
中科院分区:
其他
文献类型:
--
作者:
Delgado Bellamy D;Chance G;Caleb-Solly P;Dogramadzi S

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HAZOP和STPA等危险分析方法多年来被证明是保证系统安全的有效方法。然而,许多辅助机器人应用的维度和人为因素的不确定性挑战了这些方法的能力,以及时和具有成本效益的方式从跨学科的角度提供安全问题的全面覆盖。物理辅助任务,其中一系列动态环境需要持续的人机物理交互,例如,机器人辅助的穿衣或坐到站为安全设计和安全分析方法学提出了新的范例。对于这些类型的任务,必须考虑一系列动态环境,其中机器人辅助需要与用户进行密切和持续的物理接触。目前的法规主要涵盖工业协作机器人技术的物理人机交互(pHRI),但在很大程度上忽略了直接和连续的物理人类接触。在本文中,我们探讨了应用于机器人辅助敷料场景时常用的安全分析技术的局限性。我们从用户的角度对系统要求进行了详细分析,并考虑了可能危及这种复杂pHRI安全性的用户限制性危害。
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.
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