Community Research and Development Information Service - CORDIS


Coordinate measuring machines (CMMs) are widely used in industry to measure the mathematical coordinates of points on the profiles or surfaces of various two- or three-dimensional workpieces. This report describes the work undertaken in the development of Chebyshev reference software for the evaluation of CMM data. The work involved designing algorithms to determine best-fit fundamental geometric elements to coordinate data. Best-fit refers to the size, shape, location and orientation of the particular geometric element that are optimal in terms of the Chebyshev criterion applied to deviations of the data from the element. Where appropriate, minimum circumscribed and maximum inscribed elements are also employed. The software implementations of these algorithms and detailed testing to demonstrate their quality are described.

Additional information

Authors: ANTHONY G T ET AL., National Physical Laboratory, Teddington (GB);BITTNER B ET AL., Physikalisch-Technische Bundesanstalt, Braunschweig (DE);KOK J, Centrum voor Wiskunde en Informatica, Amsterdam (NL)
Bibliographic Reference: EUR 15304 EN (1993) 133 pp., FS
Availability: Available from National Physical Laboratory, Teddington, Middlesex TW11 0LW (GB)
Record Number: 199410143 / Last updated on: 1994-11-28
Original language: en
Available languages: en