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Spatial admittance selection conditions for frictionless force-guided assembly of polyhedral parts in single principal contact

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2 Author(s)
Shuguang Huang ; Dept. of Mech. & Ind. Eng., Marquette Univ., Milwaukee, WI, USA ; J. M. Schimmels

By judiciously selecting the admittance of a manipulator, the forces of contact that occur during assembly can be used to guide the parts to proper positioning. This paper identifies conditions for selecting the appropriate spatial admittance to achieve reliable force-guided assembly of polyhedral parts for cases in which a single feature (vertex, edge, or face) of one part contacts a single feature of the other, i.e., all single principal contact cases. These conditions ensure that the motion that results from frictionless contact always instantaneously reduces part misalignment. We show that, for bounded misalignments, if an admittance satisfies the misalignment-reducing conditions at a finite number of contact configurations, then the admittance will also satisfy the conditions at all intermediate configurations.

Published in:

IEEE Transactions on Robotics  (Volume:22 ,  Issue: 2 )