Abstract
Unified Spatial Metrology Network, developed by New River Kinematics, is applied here to the problem of judging spherical measurement systems. The talk begins with a question worth asking of any instrument – what is the goodness of an angle encoder that leaves 0.100 mm RMS of residual error over twenty repeated measurements? – and works through Cartesian uncertainty expressed in spherical and polar coordinates, a simulation of best fit in Cartesian against spherical space, USMN's goals, a comparison of Spatial Analyzer best fit with USMN results, network measurement uncertainty, and how the method can be used to check whether an instrument is operating correctly.
Cite this paper
David Ober. Metris USA. Presented at the Coordinate Metrology Systems Conference 2006, Orlando, Florida, July 17-21, 2006. Coordinate Metrology Society, reference CMS-2006-013.