Influence of the rotor rotation rate instability on goniometer's random error of measurement

Nikita V. Goncharov; Yuri V. Filatov

doi:10.1117/12.725595

11 January 2007 Influence of the rotor rotation rate instability on goniometer's random error of measurement

Nikita V. Goncharov, Yuri V. Filatov

Proceedings Volume 6594, Lasers for Measurements and Information Transfer 2006; 659408 (2007) https://doi.org/10.1117/12.725595
Event: Lasers for Measurements and Information Transfer 2006, 2006, St. Petersburg, Russian Federation

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.

Citation Download Citation

Nikita V. Goncharov and Yuri V. Filatov "Influence of the rotor rotation rate instability on goniometer's random error of measurement", Proc. SPIE 6594, Lasers for Measurements and Information Transfer 2006, 659408 (11 January 2007); https://doi.org/10.1117/12.725595

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