Methodology of analytical estimation of uncertainty of coordinate measurements

W. Jakubiec

Abstract

The paper presents the methodology of analytical estimation of coordinate measurement uncertainty. The underlying assumption of this methodology is, that a measuring task is an indirect measurement, where measurands are not coordinates but differences of coordinates. The model used for analysis takes into account geometrical errors, kinematics and dimensions of the machine. The author defined the functions expressing maximum values occurring for differences of particular geometrical errors. The paper also demonstrates the models of several measuring tasks carried out on 2D machines with similar design to classical 3D machines.

Keywords

metrology; coordinate measuring machine; uncertainty; distance; feature

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IMEKO-TC14-2007-27.pdf

DOI

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IMEKO TC

TC14 - Measurement of Geometrical Quantities

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