Perception of Powered Ankle Exoskeleton Actuation Timing During Walking: A Pilot Study
Perception of Powered Ankle Exoskeleton Actuation Timing During Walking: A Pilot Study
复制标题
步行过程中动力踝外骨骼驱动时序的感知：一项试点研究
DOI：
10.1109/embc46164.2021.9629925
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Stirling, Leia
中科院分区：
文献类型：
--
作者：
Peng, Xiangyu;Acosta-Sojo, Yadrianna;Wu, Man I;Stirling, Leia
驱动定时是踝关节外骨骼动力控制中的一个重要参数，它对用户体验和人体系统性能有很大影响。以往的研究通过优化不同的目标函数，如最小化新陈代谢成本，来研究驱动时机。然而，人们对动作时机的心理感觉知之甚少。这项初步研究测量了两名受试者对行走过程中驱动时间的微小变化的敏感度。刚刚注意到的差异(JND)阈值是通过一个拟合的心理测量函数来确定的，该函数量化了受试者在区分两个动作定时时的表现。被试在动作时序上分别能察觉到3.6%和6.8%的步幅变化，显示出个体间知觉的差异。这项先导性研究的结果初步了解了人类对外骨骼控制参数的感知，从而深入了解外骨骼使用的个体差异，并告知外骨骼的精度要求，以最大限度地减少不必要的人与系统的交互。
Actuation timing is an important parameter in powered ankle exoskeleton control that can significantly influence user experience and human-system performance. Previous studies have investigated the actuation timing through optimization under different objective functions, such as minimizing metabolic cost. However, little is known about people’s psychological sense of actuation timing. This pilot study measured two subjects’ sensitivity to small changes in actuation timing during walking. The just-noticeable difference (JND) threshold was determined via a fitted psychometric function, which quantified subjects’ performance in discriminating between a pair of actuation timings. Subjects could detect changes of 3.6% and 6.8% stride period in actuation timing respectively, showing the difference in perception between individuals. The results from this pilot study provide a preliminary understanding of human perception towards exoskeleton control parameters, which offers insight on individual differences in exoskeleton usage and informs exoskeleton precision requirements to minimize undesired human-system interaction.
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影响因子：
2.4
作者：
GU, X;GREEN, DM
通讯作者：
GREEN, DM
影响因子：
2.4
作者：
He, NJ;Dubno, JR;Mills, JH
通讯作者：
Mills, JH
DOI：
10.1109/tnsre.2020.3033711
发表时间：
2021
期刊：
IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society
影响因子：
--
作者：
Shepherd MK;Simon AM;Zisk J;Hargrove LJ
通讯作者：
Hargrove LJ
影响因子：
2.4
作者：
GREEN, DM
通讯作者：
GREEN, DM
影响因子：
3.7
作者：
Malcolm P;Derave W;Galle S;De Clercq D
通讯作者：
De Clercq D