IMPROVED LOW FREQUENCY ACCELEROMETER CALIBRATION

Mark Schiefer, Richard Bono

Abstract

This paper will discuss a newly developed implementation of low frequency accelerometer calibrations below 10 Hz. The goal is an improved low frequency accelerometer calibration methodology capable of performing superior quality measurements with significantly lower uncertainties while maintaining good throughput and the simplicity of traditional back-to-back calibration techniques. By using an optical encoder as the measurement reference instead of a traditional back-to-back reference accelerometer, limitations due to shaker stroke length are nearly eliminated, with the practical limitation for a quality calibration measurement at ultra low frequency being the resolution of the sensor under test itself.

Keywords

low-frequency accelerometer calibration

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IMEKO-WC-2009-TC22-662.pdf

DOI

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IMEKO TC

TC22 - Vibration Measurement

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