Shock and Vibration

Shock and Vibration / 2000 / Article

Open Access

Volume 7 |Article ID 531718 | https://doi.org/10.1155/2000/531718

Alfred Link, Hans-Jüurgen von Martens, "Calibration of Accelerometers by Shock Excitation and Laser Interferometry", Shock and Vibration, vol. 7, Article ID 531718, 12 pages, 2000. https://doi.org/10.1155/2000/531718

Calibration of Accelerometers by Shock Excitation and Laser Interferometry

Received25 May 1999
Revised22 Jul 1999

Abstract

A signal processing method for determining the dynamic behavior of accelerometers by shock excitation and laser interferometry is presented. The method allows the shock sensitivity and the magnitude and phase lag of the complex sensitivity of accelerometers to be accurately measured. After digitizing the phase-modulated signals at the output of a homodyne or heterodyne interferometer, the time-dependent displacement is reconstructed on the basis of the principle of coherent demodulation. Data processing developed for determining peak value and spectrum of the acceleration efficiently suppresses disturbing quantities. Computer simulations and experiments proved that the shock parameters can be measured with expanded uncertainties of less than 0.2%. method has been adopted by the ISO/TC 108/SC 3 as a primary shock calibration method to be specified in a new international standard ISO 16063-13 “Primary shock calibration using laser interferometry”.

Copyright © 2000 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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