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.
Download:
IMEKO-TC4-2007-190.pdf
DOI:
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Event details
IMEKO TC:
TC4
Event name:
TC4 Symposium 2007
Title:
XVth IMEKO TC4 International Symposium on Novelties in Electrical Measurements and Instrumentation (together with 12th IMEKO TC4 Workshop on ADC Modelling and Testing)
Place:
Iasi, ROMANIA
Time:
19 September 2007 - 21 September 2007