Grasp

Grasp.

Grasp Invariance

This paper introduces a principle to guide the design of finger form: invariance of contact geometry over some continuum of varying shape and/or pose of the grasped object in the plane. Specific applications of this principle include scaleinvariant and pose-invariant grasps. Under specific conditions, the principle gives rise to spiral shaped fingers, including logarithmic spirals and straight ...

Grasp Functions

When manipulating parts, it is important to determine the orientation of the part with respect to thegripper. This orientation may not be known precisely or may be disturbed by the act of grasping. It isin some cases possible to use mechanical compliance to orient parts during grasping. It was recentlyshown [14] that any part with polygonal boundary can be oriented and grasped i...

RID-GRASP: Redundancy Identification and Removal Using GRASP

Redundancy identification and removal is a critical step that typically follows logic synthesis or optimization. In principle, it should be possible to restrict the transformations applied by synthesis and optimization algorithms to those that preserve testability. In practice, however, few, if any, synthesis programs can guarantee the irredundancy of the logic circuits they produce. It may als...

Grasp that optimises objectives along post-grasp trajectories

In this article, we study the problem of selecting a grasp pose on the surface of an object to be manipulated by considering three post-grasp objectives. These objectives include (i) kinematic manipulation capability [1], [2], (ii) torque effort [3] and (iii) impact force in case of collision [4] during post-grasp manipulative actions. In these works [1]–[4], the main assumption is that a manip...