正常歩行における歩行動作の解析方法 [in Japanese] A Method of Analysis of Gait Motion during Normal Walking [in Japanese]
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This investigation aims at determining with accuracy the locomotion during the normal walking. Forces and moments at joints are obtained by an alyzing two data, the gait patterns observed by 16 mm camera and the floor reactions caught by the force plate. Though the errors are small in observations of the gait patterns, they become large in the data of the accelerations. Because accelerations are obtained by differentiating the displacement data from observations twice with respect to time, and each differentiation amplifies errors. In this report it is emphasized that the accuracies of the data of the accelerations should be evaluated by the following three viewpoints; (1) relations between inertia forces and floor reactions, (2) balances of moments at joints, (3) relations between displacements of joints and their accelerations, and is proposed a method of analyzing the data in which the data of accelerations are corrected according to the evaluated results for accuracies. The method is applied to observed data and it is found that the results become satisfactory for three viewpoints after a few repeats of correcting operations.
- Journal of the Japan Society of Precision Engineering
Journal of the Japan Society of Precision Engineering 47(6), 733-739, 1981
The Japan Society for Precision Engineering