WIT Press


Sensitivity Of A 3-D Surface Mapping System To Environmental Perturbations

Price

Free (open access)

Paper DOI

10.2495/LAMDAMAP010171

Volume

34

Pages

9

Published

2001

Size

867 kb

Author(s)

J. W. McBride, M Hill, J. Loh & D. Zhang

Abstract

Sensitivity of a 3-D surface mapping system to environmental perturbations J.W. McBride, M. Hill, J. Loh & D. Zhang Mechanical Engineering, University of Southampton, UK Abstract A newly developed three-axes coordinate measurement machine, coupled with a confocal laser sensor, has been housed in a temperature-controlled laboratory. Initial results of three-dimensional (3-D) measurements taken off a NAMAS (TVational Accreditation of Measurement and Sampling) certified sphere were found to vary significantly with large errors. Evaluation of the possible sources of errors included drift in ambient temperature, positioning inaccuracies, and mechanical set-up errors such as orthogonality and straightness of axes. This paper investigates the sensitivity of the measurement system towards environmental perturbations, looking particularly at the influence of temperature drift. The laboratory's temperature was logged over a period of time and the data subsequently charted. Bas

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