Relationship between Coordinate Transformation Uncertainty and Arrangement of Common Reference Points in Large-Scale Metrology

Abstract:

Large-scale coordinate measurement frequently involves unifying coordinate frames of individual measurement systems by aligning two sets of common reference points, which is called coordinate transformation. During this transformation process, some uncertainty is introduced into the final measurement results from common points. This paper studies the relationship between this introduced uncertainty and common points in order to minimize it. First, an uncertainty estimation model of coordinate transformation is developed to quantify the introduced uncertainty. Then the relationship between the introduced uncertainty and the arrangement of the common points is simulationally and experimentally investigated and some feasible and efficient arrangements are proposed in view of minimizing it.

• Periodical: Applied Mechanics and Materials (Volume 870)
• Pages: 309-314
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.870.309
• Online since: September 2017
• Authors: Jia Rui Lin, Yu Ren*, Yin Guo, Yong Jie Ren, Ling Hui Yang, Ji Gui Zhu
• Keywords: Arrangement, Coordinate Transformation, Large-Scale Metrology, Uncertainty

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