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Assessing ranging errors as a function of azimuth in laser trackers and tracers.

Muralikrishnan, B*; Lee, V*; Blackburn, C*; Sawyer, D*; Phillips, S*; Ren, W*; Hughes, E B (2013) Assessing ranging errors as a function of azimuth in laser trackers and tracers. Meas. Sci. Technol., 24 (6). 065201

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Abstract

Tilt and radial error motion of a laser tracker head as it spins about the two rotation axes result in small but measurable ranging and angle errors. The laser tracer, on the other hand, measures range with respect to the center of a high quality stationary sphere. It is therefore not expected to be influenced by the radial error motions of the carriage that carries the optics and the source, but the form error of the reference sphere and possibly the eccentricity in its placement with respect to the circular path traced by the carriage will be contributors to the ranging errors. In this paper, we describe experiments to assess the magnitude of these ranging errors as a function of the azimuth angle in different laser trackers and a laser tracer.

Item Type: Article
Subjects: Engineering Measurements
Engineering Measurements > Dimensional
Identification number/DOI: 10.1088/0957-0233/24/6/065201
Last Modified: 02 Feb 2018 13:14
URI: http://eprintspublications.npl.co.uk/id/eprint/5855

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