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Unformatted text preview: shed by sequentially performing three major tasks: (i) measurement planning and capturing sample coordinate points; (ii) evaluation of the optimum substitute geometry; and (iii) calculation of geometric 135
J.K. Davidson (ed.), Models for Computer Aided Tolerancing in Design and Manufacturing, 1 3 5 – 146. © 2007 Springer. 136 A. Barari, H. A. ElMaraghy and G. K. Knopf deviations. In contrast, the presented method performs the above three tasks concurrently in an adaptive closed loop with continuous feedback to each other. The proposed method seeks to model the surface errors patterns, by studying their probability density function, in addition to supporting the part acceptance or rejection decisions. A pattern recognition technique called Parzen windows [Parzen, 1962] is utilized for this purpose. Studying the second order discontinuities of the density function identifies the critical portions of the surface that require further iterative sampling of measurement points. In order to validate the proposed methodology, a set of ex...
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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.
- Spring '10
- The Land