DEVELOPMENT OF DIGITAL DEMODULATOR FOR LASER VIBROMETER STANDARD

A. Ota, Y. Kobayashi, O. Takano, N. Kasai

Abstract

In this study, a measurement reliability of commercial laser vibrometer with analogue demodulator is investigated for establishment of traceability system for laser vibrometer in vibration acceleration standard. As a result, a large amount of measurement deviation due to characteristics of analogue demodulator is confirmed, and in order to reduce such deviation, high accuracy digital demodulator, applicable as the reference standard, is developed. The good measurement accuracy of the developed digital demodulator was confirmed by the experiments.

Keywords

laser vibrometer, analogue demodulator, digital demodulator, ISO 16063-41

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IMEKO-WC-2012-TC22-O3.pdf

DOI

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IMEKO TC

TC22 - Vibration Measurement

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