Designing vibrotactile balance feedback for desired body sway reductions.
Designing vibrotactile balance feedback for desired body sway reductions.
复制标题
设计振动触觉平衡反馈以减少所需的身体摇摆。
DOI：
10.1109/iembs.2011.6090308
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Furman,Joseph
中科院分区：
文献类型：
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作者：
Loughlin,Patrick;Mahboobin,Arash;Furman,Joseph
关于身体位置和速度的振动触觉反馈已被证明在减少站立时因平衡扰动而产生的低频身体摇摆(低于约0.5赫兹)方面是有效的。然而，目前的设备导致高频身体摇摆的不希望的增加。此外，与其他感官假体(如助听器)不同，当前的振动触觉平衡假体主要采用一种“一刀切”的方法，因为它们对所有受试者使用相同的设置(即参数值)。我们不是为所有受试者使用由位置和速度反馈组成的固定设计，而是提出一种使用系统识别方法来识别为受试者实现所需的身体摇摆频率响应所需的反馈的“定制设计”方法。我们的推导和仿真表明，为了实现这一目标，需要由特定于对象的身体位置、速度和加速度的过滤组合组成的反馈。最后给出了仿真结果以说明结果的正确性。
Vibrotactile feedback about body position and velocity has been shown to be effective at reducing low frequency body sway (below about 0.5 Hz) in response to balance perturbations while standing. However, current devices cause an undesirable increase in high frequency body sway. In addition, unlike other sensory prostheses such as hearing aids, which are fine-tuned to the user, current vibrotactile balance prostheses largely employ a “one size fits all” approach, in that they use the same settings (i.e. parameter values) for all subjects. Rather than using a fixed design consisting of position and velocity feedback for all subjects, we propose a “custom design” approach that employs system identification methods to identify the feedback required to achieve a desired body sway frequency response for the subject. Our derivations and simulations show that in order to accomplish this objective, feedback consisting of a subject-specific filtered combination of body position, velocity and acceleration is required. Simulation results are provided to illustrate the results.