Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

On the Laser Doppler Velocimetry for Surface Rotation Measurements

Version 1 : Received: 8 October 2020 / Approved: 9 October 2020 / Online: 9 October 2020 (09:29:37 CEST)

How to cite: Kucharski, D.; Musiałowski, M. On the Laser Doppler Velocimetry for Surface Rotation Measurements. Preprints 2020, 2020100192 (doi: 10.20944/preprints202010.0192.v1). Kucharski, D.; Musiałowski, M. On the Laser Doppler Velocimetry for Surface Rotation Measurements. Preprints 2020, 2020100192 (doi: 10.20944/preprints202010.0192.v1).

Abstract

The article aims to present the possible use of the simple modified optical training kit as a low-cost, simple setup for high precision surface speed measurements. A measurement capability evaluation of the optical Doppler kit used for velocimetry of a fast-rotating reflecting surface is presented. To get high repeatability measurements, we modified a fibre optic interferometry training kit. By using signal processing and statistics a precision under repeatability conditions of measurements was evaluated. Expressed by the standard deviations (3σ’s) the surface velocity measurements precision below 0.2 m/s is shown. The Cg’s capability indices were also evaluated. We postulate, the electric circuit stability of the measurement system power supply is essential for a signal noise reducing process for a wide range of metrology systems. It is crucial for precision measurements.

Subject Areas

doppler effect; optical measurements; precision; rotation velocimetry; system capability; repeatability; surface metrology

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