Title
Static Stability Analysis of Spatial Grasps Including Contact Surface Geometry
Abstract
In this study, we analyze the three-dimensional (3-D) static grasp stability of a single object. Our model takes into account the contact surface geometry (metric tensor, curvature and torsion) and the contact condition (rolling contact and sliding contact). In the case of rolling and sliding contacts, each finger rolls and slides on the object surface, respectively. Each finger is replaced with a 3-D orthogonal virtual spring model and grasp stability is evaluated from the potential energy stored in the grasp. A grasp stiffness matrix including the effects of contact surface geometry and contact condition is derived. The stability is evaluated from the eigenvalues of the matrix. Configuration displacement of the object in terms of position and orientation is decomposed into stable and unstable directions using the corresponding eigenvectors. The effectiveness of our proposed method is demonstrated by several examples. (C) Koninklijke Brill NV, Leiden and The Robotics Society of Japan, 2011
Year
DOI
Venue
2011
10.1163/016918610X552187
ADVANCED ROBOTICS
Keywords
Field
DocType
Grasp stability,three-dimensional orthogonal spring model,grasp stiffness matrix,contact surface geometry,sliding contact,rolling contact
Curvature,GRASP,Longitudinal static stability,Torsion (mechanics),Matrix (mathematics),Metric tensor,Stiffness matrix,Geometry,Mathematics,Eigenvalues and eigenvectors
Journal
Volume
Issue
ISSN
25
SP3-4
0169-1864
Citations 
PageRank 
References 
0
0.34
0
Authors
5
Name
Order
Citations
PageRank
Takayoshi Yamada17617.01
Toshiya Taki200.68
Manabu Yamada300.34
Yasuyuki Funahashi44211.27
Hidehiko Yamamoto53216.80