Simultaneous control of multiple functions of bionic hand prostheses: Performance and robustness in end users
Simultaneous control of multiple functions of bionic hand prostheses: Performance and robustness in end users
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DOI：
10.1126/scirobotics.aat3630
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发表时间：
2018-06-27
期刊：
影响因子：
25
通讯作者：
Farina, Dario
中科院分区：
文献类型：
--
作者：
Hahne, Janne M.;Schweisfurth, Meike A.;Farina, Dario
肌电假手通常由位于残肢屈肌和伸肌上的双极电极控制。使用临床建立的技术，一次只能控制一个功能。这是麻烦的，并且限制了现代假体提供的附加功能的益处。对更先进的控制技术进行了广泛的研究，但临床影响有限，主要是由于在现实世界条件下缺乏可靠性。我们实施了一种基于回归的控制方法，允许同时和比例控制的两个自由度，并评估它对五个假肢最终用户。在评估模拟日常生活活动的任务时，我们包括了限制可靠性的因素，例如不同手臂位置和不同日期的测试。回归方法在多天内是稳健的，仅受手臂位置变化的轻微影响。此外，在大多数情况下，回归方法优于两种临床对照方法。
Myoelectric hand prostheses are usually controlled with two bipolar electrodes located on the flexor and extensor muscles of the residual limb. With clinically established techniques, only one function can be controlled at a time. This is cumbersome and limits the benefit of additional functions offered by modern prostheses. Extensive research has been conducted on more advanced control techniques, but the clinical impact has been limited, mainly due to the lack of reliability in real-world conditions. We implemented a regression-based control approach that allows for simultaneous and proportional control of two degrees of freedom and evaluated it on five prosthetic end users. In the evaluation of tasks mimicking daily life activities, we included factors that limit reliability, such as tests in different arm positions and on different days. The regression approach was robust over multiple days and only slightly affected by changing in the arm position. Additionally, the regression approach outperformed two clinical control approaches in most conditions.