1P1-B16 人間の手先における非対称剛性モデルの提案

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  • 1P1-B16 Asymmetric Stiffness Model of a Human Hand

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This paper presents asymmetric stiffness characteristic of a human hand. It is known that a human arm generates variable stiffness depending on tasks by coactivation of agonist and antagonist muscles. Previous related researches have been presented impedance characteristics of a human upper limb in static posture and dynamic motion. These characteristics are represented by ellipsoids. However, the above analyses are based on a simple muscle model and conventional kinematic and dynamics of a robotic manipulator. In this paper, perturbation-excited method is carried out for estimating the stiffness of a human hand. The experimental results demonstrates nonlinear property of the stiffness of a human hand. To illustrate the observed stiffness characteristic, this paper proposes nonlinear stiffness model of the human hand.

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