An ankle-foot orthosis powered by artificial pneumatic muscles
An ankle-foot orthosis powered by artificial pneumatic muscles
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DOI：
10.1123/jab.21.2.189
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发表时间：
2005-05-01
影响因子：
1.4
通讯作者：
Hannaford, B
中科院分区：
文献类型：
--
作者：
Ferris, DP;Czerniecki, JM;Hannaford, B
我们为人类踝关节开发了一种气动矫形器。矫形器由一个碳纤维外壳、铰链关节和两个人工气动肌肉组成。一个人造气动肌肉提供足底屈曲扭矩，另一个人造气动肌肉提供背屈扭矩。计算机软件独立调节每个人工肌肉内的气压，使人工肌肉力与整流低通滤波肌电图（EMG）振幅成正比（即肌电比例控制）。胫骨前肌肌电图激活人工背屈肌，比目鱼肌肌电图激活人工足底屈肌。我们收集关节运动学和人工肌力的数据，当一个健康的参与者在跑步机上行走矫形器。矫形器提供的足底屈肌扭矩峰值为70 Nm，背屈肌扭矩峰值为38 Nm。该矫形器可用于人体运动的基础科学研究或可能用于神经损伤后的步态康复。
We developed a pneumatically powered orthosis for the human ankle joint. The orthosis consisted of a carbon fiber shell, hinge joint, and two artificial pneumatic muscles. One artificial pneumatic muscle provided plantar flexion torque and the second one provided dorsiflexion torque. Computer software adjusted air pressure in each artificial muscle independently so that artificial muscle force was proportional to rectified low-pass-filtered electromyography (EMG) amplitude (i.e., proportional myoelectric control). Tibialis anterior EMG activated the artificial dorsiflexor and soleus EMG activated the artificial plantar flexor. We collected joint kinematic and artificial muscle force data as one healthy participant walked on a treadmill with the orthosis. Peak plantar flexor torque provided by the orthosis was 70 Nm, and peak dorsiflexor torque provided by the orthosis was 38 Nm. The orthosis could be useful for basic science studies on human locomotion or possibly for gait rehabihtation after neurological injury.