PERFOMANCE EVALUATION OF TWO LOW FREQUENCY AIR BEARING VIBRATION EXCITERS

C. S. Veldman, T. M. Lefenya

Abstract

The National Metrology Institute of South Africa designed an air bearing linear translation stage (LTS) used for primary low frequency accelerometer calibration. The LTS serves as a replacement of a commercial LTS. The motivation for the new design consideration is touched on. The performances of both LTSs were evaluated in terms of their flatness, straightness, roll, pitch and dynamic transverse motion; the results and findings of which are reported in some detail. The influence of the mechanical connection between the LTS and the electrodynamics exciter was also investigated.

Keywords

low frequency accelerometer calibration, air bearing linear translation stage, transverse motion, electrodynamic exciter

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IMEKO-WC-2015-TC22-443.pdf

DOI

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IMEKO TC

TC22 - Vibration Measurement

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