Precision measurement method for small and very small displacements using the laser vibration meter

V. D. Dorca, R. Munteanu jr., M. D. Iudean

Abstract

The paper presents a system which is capable to perform a measuring method for small and very small displacements (microns). The measurements were made using a laser vibration meter, are very precise and can be controlled with a PC. Through the static and dynamic analyze of the system, we noticed if the polarity of the current is changed, using the same current settings in the computer, the displacements of a loudspeaker’s membrane are different. The displacement of the membrane is smaller for the advancement than for the receding. A copper line could be attached to the system, line which could suffer tensions or distortions, but could be displaced horizontally very precise.

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IMEKO-TC4-2007-190.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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