Abstract
How to design an anthropomorphic hand imitating specific human hand grasps with as few actuators as possible is still a challenge. This letter presents a method for obtaining a simplified configuration of anthropomorphic hand imitating specific human hand grasps based on the motion analyses of the human hand. A participation matrix which characterizes a human hand grasp on joint motion level is constructed according to the motion participation of each finger joint. By adding all participation matrices of expected human hand grasps together a total participation matrix can be derived, and through mathematical processing a simplified anthropomorphic hand configuration can be obtained. Following the proposed method, a simplified anthropomorphic hand configuration that imitates six basic human hand grasps was obtained. A series of grasp experiments with the anthropomorphic hand prototype were conducted to validate the grasping capability as well as the proposed simplified configuration design method. This method can help to obtain a reasonably simplified configuration of an anthropomorphic hand when expected human hand grasps are definite.
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