Evaluation and optimal selection of bionic hand configurations

When we design a bionic hand, how to select an optimal configuration from hundreds or even thousands options is always a knotty issue. In this paper, a method for the bionic hand configuration evaluation and optimal selection is presented. Three evaluation indexes including grasp dexterity, configuration complexity and DOFs (degrees of freedom) are introduced to evaluate different bionic hand configurations, based on which TOPSIS (Technique for Order Preference by Similarity to an Ideal Solution) method with improved entropy is employed to select the optimal bionic hand configuration. The method is validated by selecting the optimal configurations of four classic bionic hands.