The deviation of the measured points from the best

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Unformatted text preview: n coordinate sampling mostly focuses on the sample size and not the sample locations. Different sampling techniques, including uniform sampling, random sampling and stratified sampling [Hocken et al., 1993] are studied. Extensive numerical experiments on various geometric primitives, such as line, plane, circle, sphere and cylinder conclude that an inspection result significantly varies by sampling size [Caskey et al., 1991] [Hocken et al., 1993]. Weckenmann et al. observed that the evaluation accuracy is increased by raising the sample size for circular and linear features. Furthermore, it was also concluded that different evaluation criteria call for different sampling strategies [Weckenmann et al., 1991] [Weckenmann et al., 1995].The distribution of the form errors on the actual geometry for flat surfaces was found to be critical for estimating the sample size as well as uncertainty of evaluation [Choi et al., 1998]. An iterative sampling method [Edgeworth & Wilhelm, 1999], utilizing a CMM capable of measuring the surface normal as well as point coordinates, uses an interpolation method to decide when and where furth...
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This note was uploaded on 08/03/2010 for the course DD 1234 taught by Professor Zczxc during the Spring '10 term at Magnolia Bible.

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