201316th International Congress of Metrology
|Number of page(s)
|Les avancées en mesure 3D et Dimensionnel / Advanced coordinate metrology & Dimensional
|07 October 2013
Evaluation of geometrical characteristics and capacity of vertical cylindrical tanks by least square method
Référencement Dynamique en Métrologie 3D optique pour une meilleureprécision en conditions d’atelier
SE “Ukrmetrteststandard”, 4, Metrologischna str., 38600, Ukraine
It has been proposed strict, from least square method (LSM), solution of evaluation geometrical parameters of vertical cylindrical tank (cylindrical part mean radius, tank tilt, axial tilt directional angle, radial deviations of tank wall from approximate cylinder) by point coordinates at the tank wall that are calculated by the measurement results of horizontal and vertical angles and distances by electronic total stations and scanners. For strict record of measurement uncertainty while approximation by LSM, it has been proposed touse their correlation matrix. It has been proposed simple model of evaluation resulting relative uncertainty of tank and course capacity, that include A-type uncertainty, evaluated as standard radial deviation and B-type uncertainty, evaluated on the base of metrological researches of the instruments that are used during measurements.
Key words: Tank / geometrical characteristics / geodetic measurement / least square method / shape model
Mots clés : réservoir / caractéristique géométrique / méthode des moindres carrés / modèle de la forme
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.