A ROTATIONAL SPEED MEASURING AND CALIBRATION SYSTEM BASED ON LASER DOPPLER VELOCIMETRY

Cheng Liu, Ji-Gou Liu, Ralph Kennel

Abstract

A rotational speed measuring and calibration system based on the Laser Doppler Velocimetry is proposed in this paper. The rotational speed of a motor in the system can be determined by measuring the tangential linear velocity of a rotating reference disc mounted on the motor shaft with a Laser Surface Velocimeter. Measuring deviations caused by manufacturing and mounting errors of the reference disc are analyzed and compensated. Therefore, a measuring accuracy of better than 0.1% is realized.

Keywords

rotational speed measurement, Laser Doppler Velocimetry, Laser Surface Velocimeter, signal processing, electrical drive

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IMEKO-WC-2015-TC7-192.pdf

DOI

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IMEKO TC

TC7 - Measurement Science

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