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]

Search this Article

Author(s)

Abstract

本研究の目的は健常者の歩行動作を正確に把握することである.16mmカメラによって観測した歩行動作と, フォースプレートによって計測した床反力のデータを基にして, 関節を通じて伝達される内力とモーメントを求めるのであるが, 観測データには, 観測の対象が生体であることに原因して生じる誤差が含まれ, これが観測データを微分して求める加速度に大きな誤差を含ませるようになる.この加速度の値に関して, 三つの観点, (1)慣性力と床反力の関係, (2)関節回りのモーメントのつりあい, (3)関節の変位と加速度の関係, から加速度の正確さが評価され得ることを示し, その評価の結果によって加速度を修正する解析の方法を提案する.そうして, その方法を実際のデータに適用して得た三つの観点に対して, そのいずれにも矛盾の無い, 加速度, 内力, モーメントの値を示す.

This investigation aims at determining with accuracy the locomotion during the normal walking. Forces and moments at joints are obtained by analyzing 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

  • Journal of the Japan Society of Precision Engineering

    Journal of the Japan Society of Precision Engineering 47(6), p733-739, 1981-06

    The Japan Society for Precision Engineering

Codes

  • NII Article ID (NAID)
    110001291168
  • NII NACSIS-CAT ID (NCID)
    AN00130014
  • Text Lang
    JPN
  • ISSN
    03743543
  • NDL Article ID
    2317407
  • NDL Source Classification
    M051(人間工学)
  • NDL Source Classification
    ZN12(科学技術--機械工学・工業--精密機械)
  • NDL Call No.
    Z16-466
  • Data Source
    NDL  NII-ELS 
Page Top