VIRTUAL INSTRUMENT USING BILINEAR TRANSFORMATION FOR PARAMETERS IDENTIFICATION OF ANTICOROSSION COATINGS

Jerzy Hoja, Grzegorz Lentka

Abstract

The paper presents the method and the virtual instrument for monitoring of anticorrosion coatings performance. The developed method of component identification of the coating equivalent circuit is based on bilinear transformation. During the identification, the vector measurement of the object impedance is necessary at four selected frequencies. The analysis of optimal frequencies selection is presented assuring minimal identification error. The test results of implemented algorithm are shown. The results proved the possibility of shorten several times the testing time of anticorrosion coatings performance in relation to traditional impedance spectroscopy technique.

Keywords

virtual instrument, bilinear transformation, impedance measurement

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IMEKO-TC4-2002-215.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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