A Computational Technique for Determining the Ground Reaction Forces in Human Bipedal Stance
A Computational Technique for Determining the Ground Reaction Forces in Human Bipedal Stance
复制标题
确定人体双足姿态地面反作用力的计算技术
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
R. Triolo
中科院分区：
文献类型：
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作者：
M. Audu;R. Kirsch;R. Triolo
我们的长期目标是使用肌肉骨骼建模方法来开发控制器算法，以使用功能性电刺激恢复下肢瘫痪患者的站立平衡。本文介绍了一种技术，有利于这种方法，避免了与建模的封闭运动链形成的两个下肢和地面，而站立的数值问题。具体而言，我们提出了一种优化技术来估计的幅度和起源的地面反作用力（GRF）向量的一只脚，从而在一个等效的开链制定。使用这种技术，我们进行了一系列的逆动力学计算，以确定GRF和中心的压力（COP）值为五个站立姿势：中立，中立与前倾，中立与后倾，宽，串联。优化过程引起的力的结果，满足平衡和COP的位置是一致的，物理上真实的结果。
Our long-term goal is to use a musculoskeletal modeling approach for developing controller algorithms to restore standing balance to individuals with lower extremity paralysis using functional electrical stimulation. This paper describes a technique that facilitates this approach by avoiding the numerical problems associated with modeling the closed kinematic chain formed by the two lower extremities and the ground while standing. Specifically, we propose an optimization technique to estimate the magnitude and origin of the ground reaction force (GRF) vector on one of the feet, resulting in an equivalent open-chain formulation. Using this technique, we performed a series of inverse dynamic computations to determine the GRF and center of pressure (COP) values for five standing postures: neutral, neutral with forward lean, neutral with backward lean, wide, and tandem. The optimization procedure elicited force results that satisfy equilibrium and result in COP locations that are consistent and physically rea...
影响因子：
2.4
作者：
Neptune, RR;Kautz, SA;Zajac, FE
通讯作者：
Zajac, FE