Least-action principle in gait
Least-action principle in gait
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DOI：
10.1209/0295-5075/87/58003
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发表时间：
2009-09-01
期刊：
影响因子：
1.8
通讯作者：
Luo, D. L.
中科院分区：
文献类型：
--
作者：
Fan, Y. F.;Loan, M.;Luo, D. L.
应用人体步态垂直地面反力规律，发现步态中存在最小作用原理现象。利用电容式传感器系统，获得了人体步态垂直地面反力的变化规律，并建立了该反力合力的结构方程。将垂直力的偏差定义为动作函数，我们从步态优化分析中观察到步幅时间一半时的最小动作原理。基于步态中的最小作用量原理，提出了一种机械能消耗的评价指标。我们的结论是，这些观察可以用来提高步态评价的问责制。版权所有（C）EPLA，2009
We apply the laws of human gait vertical ground reaction force and discover the existence of the phenomenon of least-action principle in gait. Using a capacitive mat transducer system, we obtain the variations of human gait vertical ground reaction force and establish a structure equation for the resultant of such a force. Defining the deviation of vertical force as an action function, we observe from our gait optimization analysis the least-action principle at half of the stride time. We develop an evaluation index of mechanical-energy consumption based upon the least-action principle in gait. We conclude that these observations can be employed to enhance the accountability of gait evaluation. Copyright (C) EPLA, 2009