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1 2009

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Investigation on accelerated impedance spectrum measurement method with multisine signal stimulation

Niedostatkiewicz M., Zielonko R.

Metrology and Measurement Systems

2009

Vol. 16, nr 4

619-630

The paper presents an investigation on the accelerated impedance spectrum measurement method, oriented at parameter identification of technical objects modelled by a linear equivalent circuit, e.g. anticorrosion coatings. The method is based on multisine signal stimulation of an object and response analysis by triangle window filter-banks. It has several advantages, as compared with conventional point-by-point spectrum measurement. The method was implemented in an experimental measurement system based on a DAQ card. The achieved experimental results are discussed and compared with simulation results, in terms of measurement time reduction and accuracy.