Abstract
This paper proposes a new tendon-driven robot with variable stiffness mechanisms. The tendon-driven robot is able to change stiffness by sliding variable stiffness mechanisms over the link 1 by wire tensions. As a reason for that structure and moment arms of the tendon-driven robot are changed by a position of variable mechanism. The stiffness of the tendon-driven robot is evaluated by using a stiffness ellipsoid.
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