Linearized and Compensated Interferometric System for High-Velocity Traceable Length Calibration on a Metre Scale

We report on a traceable calibration system for a 3500mm-long console that carries a measurement system for inspecting the diameter of a circular reactor chassis. The system uses two single-pass laser interferometers with homodyne fringe detection for measurement in two degrees of freedom. The hybri...

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Bibliographic Details
Published in:arXiv.org 2019-05
Main Authors: Rerucha, Simon, Bretislav Mikel, Matej, Zdenek, Herman, Ondrej, Hola, Miroslava, Jelinek, Michal, Jedlicka, Petr, Cip, Ondrej, Lazar, Josef
Format: Article
Language:English
Subjects:
Calibration
Chassis
Elongation
Interferometers
Linearization
Microcontrollers
Refractivity
Thermal expansion
Variations
Online Access:Get full text
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Summary:We report on a traceable calibration system for a 3500mm-long console that carries a measurement system for inspecting the diameter of a circular reactor chassis. The system uses two single-pass laser interferometers with homodyne fringe detection for measurement in two degrees of freedom. The hybrid FPGA-microcontroller control module carries out the fringe detection together with the application-specific scale linearization approach and the compensation of environmental influences such as thermal elongation and the refractive index of air fluctuations. We demonstrated the system feasibility with an accuracy of a few microns and translation velocity higher than 0:1 metre per second.
ISSN:2331-8422
DOI:10.48550/arxiv.1905.00778