In-Hand Manipulation via Motion Cones
Author(s)
Chavan Dafle, Nikhil Narsingh; Holladay, Rachel; Rodriguez, Alberto; Rodriguez Garcia, Alberto
DownloadAccepted version (5.996Mb)
Open Access Policy
Open Access Policy
Creative Commons Attribution-Noncommercial-Share Alike
Terms of use
Metadata
Show full item recordAbstract
In this paper, we present the mechanics and algorithms to compute the set of feasible motions of an object pushed in a plane. This set is known as the motion cone and was previously described for non-prehensile manipulation tasks in the horizontal plane. We generalize its geometric construction to a broader set of planar tasks, where external forces such as gravity influence the dynamics of pushing, and prehensile tasks, where there are complex interactions between the gripper, object, and pusher. We show that the motion cone is defined by a set of low-curvature surfaces and provide a polyhedral cone approximation to it. We verify its validity with 2000 pushing experiments recorded with motion tracking system. Motion cones abstract the algebra involved in simulating frictional pushing by providing bounds on the set of feasible motions and by characterizing which pushes will stick or slip. We demonstrate their use for the dynamic propagation step in a sampling-based planning algorithm for in-hand manipulation. The planner generates trajectories that involve sequences of continuous pushes with 5-1000x speed improvements to equivalent algorithms.
Date issued
2018-06Department
Massachusetts Institute of Technology. Department of Mechanical EngineeringJournal
Robotics: Science and Systems XIV
Publisher
Robotics: Science and Systems Foundation
Citation
Chavan-Dafle, Nikhil et al. "In-Hand Manipulation via Motion Cones." Robotics: Science and Systems XIV, June 2018, Pittsburgh, Pennsylvania, USA, Robotics: Science and Systems Foundation, June 2018.
Version: Author's final manuscript
ISBN
9780992374747