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Proceedings Paper

Influence of the rotor rotation rate instability on goniometer's random error of measurement
Author(s): Nikita V. Goncharov; Yuri V. Filatov
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Paper Abstract

In the report new model of goniometer with optical encoder based on scheme of laser dynamic goniometer is described. The scheme of developed goniometer with incremental encoder LIR-3170A as a scale is illustrated. These goniometer can be successfully applying for angle measurements, e.g. for optical polygons and encoders calibrating. LIR-3170A has rather big discreteness so it was necessary to involve in the goniometer scheme pulse generator for realization so-called "time-interpolation". But it will reduce to random error due to rotation rate instability of the OE's rotor. In this article the basic attention is given to a technique of reduction of a discreetness error of the optical encoder. Also by applying correlation analysis theory formula of the dispersion of the measurement error due to rotation rate instability will be derive. After computing derived equation conclusion of the necessary instability for minimal error will done.

Paper Details

Date Published: 11 January 2007
PDF: 10 pages
Proc. SPIE 6594, Lasers for Measurements and Information Transfer 2006, 659408 (11 January 2007); doi: 10.1117/12.725595
Show Author Affiliations
Nikita V. Goncharov, St. Petersburg State Electrotechnical Univ. (Russia)
Yuri V. Filatov, St. Petersburg State Electrotechnical Univ. (Russia)


Published in SPIE Proceedings Vol. 6594:
Lasers for Measurements and Information Transfer 2006

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