Gharini Mohammad, Mohammadi Moghaddam Majid, Farahmand Farzam
Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran.
Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran.
Assist Technol. 2020;32(2):100-108. doi: 10.1080/10400435.2018.1493708. Epub 2018 Sep 19.
This study proposes a computer modeling approach to find the optimal damping coefficients of the viscoelastic ankle-foot prostheses for each specific amputee. A two-dimensional locomotion model was developed for a transtibial amputee and personalized using his body measures and the reference gait pattern of an equivalent able-bodied subject. By employing the forward dynamic simulation, the amputee's locomotion was synthesized for different prosthetic settings to find the optimal damping coefficients, based on a kinematics and a total work cost function. Results indicated a good agreement between the model predictions and the experimental observations.
本研究提出了一种计算机建模方法，以针对每个特定截肢者找到粘弹性踝足假肢的最佳阻尼系数。为一名经胫骨截肢者开发了一个二维运动模型，并根据其身体尺寸和等效健全受试者的参考步态模式进行个性化设置。通过采用正向动力学模拟，基于运动学和总功成本函数，针对不同的假肢设置合成了截肢者的运动，以找到最佳阻尼系数。结果表明模型预测与实验观察结果吻合良好。
