Classification of grasps by robot hands

Grasping robotic hands is classified into three categories based on the object connectivity. We decompose the space of contact forces into four subspaces and develop a method to determine the dimensions of the subspaces with respect to the connectivity of the grasped object. The relationships we obtain reveal the kinematic and static characteristics of three categories of grasps. It indicates how contact forces can be decomposed corresponding to each type of grasp. The technique also provides a guideline for determining the distribution of contact forces on grasped objects. We analyze how power grasps are identified from the object connectivity and used to synthesize hand configurations for grasping and manipulation tasks. A physical interpretation of the subspaces and the determination of their dimensions are illustrated by examples.

[1]  David E. Orin,et al.  Neural network control of force distribution for power grasp , 1991, Proceedings. 1991 IEEE International Conference on Robotics and Automation.

[2]  Yoshihiko Nakamura,et al.  Robustness of power grasp , 1994, Proceedings of the 1994 IEEE International Conference on Robotics and Automation.

[3]  Yuru Zhang,et al.  Definition and force distribution of power grasps , 1995, Proceedings of 1995 IEEE International Conference on Robotics and Automation.

[4]  David E. Orin,et al.  General formulation for force distribution in power grasp , 1994, Proceedings of the 1994 IEEE International Conference on Robotics and Automation.

[5]  David E. Orin,et al.  Dynamic simulation of enveloping power grasps , 1993, [1993] Proceedings IEEE International Conference on Robotics and Automation.

[6]  W.A. Gruver,et al.  A new design for a dexterous robotic hand mechanism , 1992, IEEE Control Systems.

[7]  Mark R. Cutkosky,et al.  On grasp choice, grasp models, and the design of hands for manufacturing tasks , 1989, IEEE Trans. Robotics Autom..

[8]  Claudio Melchiorri,et al.  Multiple whole-limb manipulation: An analysis in the force domain , 1997, Robotics Auton. Syst..

[9]  Antonio Bicchi,et al.  Force distribution in multiple whole-limb manipulation , 1993, [1993] Proceedings IEEE International Conference on Robotics and Automation.

[10]  David E. Orin,et al.  Efficient algorithm for optimal force distribution-the compact-dual LP method , 1990, IEEE Trans. Robotics Autom..

[11]  C. Melchiorri.  Static force analysis for general cooperating manipulators , 1994, Proceedings of the 1994 IEEE International Conference on Robotics and Automation.

[12]  R. E. Ellis,et al.  Grasping using the whole finger , 1994, Proceedings of the 1994 IEEE International Conference on Robotics and Automation.

[13]  Jeffrey C. Trinkle,et al.  Enveloping, frictionless, planar grasping , 1987, Proceedings. 1987 IEEE International Conference on Robotics and Automation.

[14]  B. Dizioglu,et al.  Mechanics of form closure , 1984 .

[15]  Matthew T. Mason,et al.  Robot Hands and the Mechanics of Manipulation , 1985 .

[16]  Antonio Bicchi,et al.  Mobility and kinematic analysis of general cooperating robot systems , 1992, Proceedings 1992 IEEE International Conference on Robotics and Automation.