Statics of Power Grasps with a Multifingered Hand.

Classification of grasps by multifingered robot hands

This research characterizes grasping by multifingered robot hands through an investigation of the space of contact forces between fingers and the grasped object. By decomposing the space of contact forces into four subspaces, we develop a method to determine the dimensions of the subspaces with respect to the connectivity of the object. The relationship we obtain reveals the diflkrences between...

A control basis for learning multifingered grasps

Kinematic Graspability of a 2D Multifingered Hand

In this paper, we describe a solution to the problem of determining the kinematic feasibility of a dextrous hand to grasp a given object at a desired connguration in the two dimensional space. We refer to this problem as kinematic graspability. The kinematic conngu-ration of a grasp is deened in terms of a set of contact pairs between the topological features of the hand and the object. We deri...

Stochastic optimization-based approach for multifingered grasps synthesis

In this paper, we propose an approach for computing suboptimal grasps of polyhedral objects. Assuming n hard-finger contact with Coulomb friction model and based on central axes of the grasp wrench, we develop a new necessary and sufficient condition for n-finger grasps to achieve force-closure property. Accordingly, we reformulate the proposed force-closure test as a new linear programming pro...

Human Hand Motion Analysis and Synthesis of Optimal Power Grasps for a Robotic Hand

Biologically inspired robotic systems can find important applications in biomedical robotics, since studying and replicating human behaviour can provide new insights into motor recovery, functional substitution and human-robot interaction. The analysis of human hand motion is essential for collecting information about human hand movements useful for generalizing reaching and grasping actions on...