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Incremental Building of a Polyhedral Feature Model for Programming by Human Demonstration of Force-Controlled Tasks

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5 Author(s)
Peter Slaets ; Dept. of Mech. Eng., Katholieke Universiteit Leuven ; Tine Lefebvre ; Johan Rutgeerts ; Herman Bruyninckx
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This paper describes the construction of a local polyhedral 3-D feature model derived from pose and wrench sensor measurements collected during a force-controlled execution of a sequence of polyhedral contact formations. The procedure consists of two steps: 1) the sensor measurements are filtered, resulting in a (nonminimal) representation of a 3-D feature model; and 2) identification of a reduced set of geometric parameters (vertices and faces) of the rigid polyhedral objects in the environment is performed. The following improvements with respect to the state of the art are made: 1) creation of a polyhedral 3-D feature model of a previously unknown polyhedral environment; 2) estimation of a force decomposition useful for feedback in a force controller or for monitoring the contact forces; and 3) reduction of the number of model parameters, leading to a computational reduction, a better precision of the geometric parameters, and a higher level description of the contact topology

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IEEE Transactions on Robotics  (Volume:23 ,  Issue: 1 )