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Efficient Determination of Four-Point Form-Closure Optimal Constraints of Polygonal Objects

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2 Author(s)
Jordi Cornella ; Rikshospitalet Univ. Hosp., Interventional Centre, Univ. of Oslo, Oslo ; RaÚl Suarez

This paper proposes a new and more efficient solution to the problem of determining optimal form-closure constraints of polygonal objects using four contacts. New grasp parameters are determined based only on the directions of the applied forces, which are then used to determine the optimal grasp. Given a set of contact edges, using an analytical procedure a solution that is either the optimal one or is very close to it is obtained (only in this second case an iterative procedure is needed to find a root of a nonlinear equation). This procedure is used for an efficient determination of the optimal grasp on the whole object. The algorithms have been implemented and numerical examples are shown.

Published in:

IEEE Transactions on Automation Science and Engineering  (Volume:6 ,  Issue: 1 )