Publication
Global optimization of robotic grasps
Conference Article
Conference
Robotics: Science and Systems Conference (RSS)
Edition
VII
Pages
1-8
Doc link
http://www.roboticsproceedings.org/rss07/p12.html
File
Abstract
This paper presents a procedure to optimize the quality of robotic grasps for objects that need to be held and manipulated in a specific way, characterized by a number of tight contact constraints. The main difficulties of the problem include that the set of feasible grasps is a manifold implicitly defined by a system of non-linear equations, the high dimension of this manifold, and the multi-modal nature of typical grasp quality indices, which make local optimization methods get trapped into local extrema. The proposed procedure finds a way around these difficulties by focussing the exploration on a relevant subset of grasps of lower dimension, which is traced out exhaustively using higher-dimensional continuation techniques. Using these techniques, a detailed atlas of the subset is obtained, on which the highest quality grasp according to any desired criterion can be readily identified. Experiments on a 3-finger planar hand and on the Schunk anthropomorphic hand validate the approach.
Categories
robot kinematics, robots.
Author keywords
grasping
Scientific reference
C. Rosales, J.M. Porta and L. Ros. Global optimization of robotic grasps, VII Robotics: Science and Systems Conference, 2011, Los Angeles, USA, pp. 1-8, MIT Press.
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