2018 年 30 巻 6 号 p. 880-891
Robotic rehabilitation systems for upper limbs have been developed as two system types: active or passive. Active-type systems use actuators to provide users with varying degrees of force; in contrast, the force available from passive-type systems is limited, although these systems are safer to use. In this paper, a passive-type force display with redundant brakes is proposed to extend the displayable force region of the system. The kinematics and statics are derived, and the reaction force generated by brake torques is clarified. The displayable force region is analyzed in the simulation, and then the experiments are examined to verify the proposed analytical model.
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