摘要 |
An ordered set of physical points, each comprising a nominal point and an associated allowable deviation, is approximated by a sequence of geometric elements determined by a method of intersecting polytopes in a parametric sp ace. A first bundle of geometric elements connecting a first subgroup of phy sical points is generated and mapped to a first polytope. A second bundle of geometric elements connecting a second subgroup of physical points is gener ated and mapped to a second polytope. If the intersection between the first polytope and the second polytope is not null, the points in the intersection region correspond to geometric elements which approximate the physical poin ts in the combined two subgroups. The process is repeated iteratively for ad ditional subgroups. The center point of the final intersection region corres ponds to an approximate best-fit geometric element.
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