Toshikazu Matsui

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So far, it has been shown that the minimum jerk model and the minimum torque change model with fixed end-point boundary condition are effective in reproducing experimental characteristics for human arm's reaching movements. However, the conventional models have no ability to reproduce the spatial variability of final hand-points in the hand trajectories.(More)
A new optimal control model of human arms has been developed to simulate two-point reaching movement characteristics for human three-joint arms (shoulder, elbow, and wrist joints) and its fundamental performance has been clarified. The new model is formulated by extending the previous two-joint modified minimum torque-change model to a three-joint model(More)
We have already formulated a dynamics-switching optimal control model that reproduces human rising movements from a chair, and clarified its effectiveness and the existence of the optimal relation between the model's two factors (input weight and switching time) indispensable for sit-to-stand movements. In order to quantitatively evaluate human sit-to-stand(More)
This paper describes a man machine interface based on gazing input without user’s body restrictions. Gazing points forward to the side directions were estimated by the relative distance of an iris and the outer corner of left and right eyes. Whether or not the user gazes the camera was recognized by the intersection of the two perpendicular bisectors(More)