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Appropriate regulation of human arm mechanics is essential for completing the diverse range of tasks we accomplish each day. The steady state mechanical properties of the arm most relevant for postural tasks can be characterized by endpoint stiffness, the static forces generated by a limb in response to external perturbations of posture. Endpoint stiffness is directional, resisting perturbations in...
This paper presents a new gravity compensation method for an upper extremity exoskeleton mounted on a wheel chair. This new device is dedicated to regular and efficient rehabilitation training for post-stroke and injured people without the continuous presence of a therapist. The exoskeleton is a wearable robotic device attached to the human arm. The user provides information signals to the controller...
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