volume 33, issue 3, P463-481 2005
DOI: 10.1007/s00454-004-1148-9
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Abstract: A part feeder is a mechanism that receives a stream of identical parts in arbitrary orientations and outputs them oriented the same way. Various sensorless part feeders have been proposed in the literature. The feeder we consider consists of a sequence of fences that extend partway across a conveyor belt; a polygonal part P carried by the belt is reoriented by each fence it encounters. We present an O(m + n 2 log 3 n)-time algorithm to compute a sequence of fences that uniquely orients P, if one exists, where…

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