Title
Impedance measurement using multiharmonic least-squares waveform fitting algorithm
Abstract
In this paper, a multiharmonic least-squares waveform fitting algorithm is used to measure impedances. By using analog to digital converters, a function generator, a reference impedance and the fitting algorithm, we show that it is possible to obtain the frequency response of a unknown linear impedance at the frequencies that correspond to the harmonics of the stimulus input signal. Results show that, with a 400 Hz triangular signal, harmonics up to the 49th can be used to measure the impedance frequency response of a parallel RLC circuit with experimental standard deviations below 1.5% for the impedance magnitude and 1^o for the impedance phase.
Year
DOI
Venue
2008
10.1016/j.csi.2007.09.002
Computer Standards & Interfaces
Keywords
Field
DocType
unknown linear impedance,impedance measurement,stimulus input signal,reference impedance,multiharmonic least-squares,impedance magnitude,impedance phase,fitting algorithm,frequency response,impedance frequency response,digital converter,hz triangular signal,least square method,least square,standard deviation
Output impedance,Mathematical optimization,Frequency response,Quarter-wave impedance transformer,Computer science,Waveform,Impedance matching,Electrical impedance,Real-time computing,Characteristic impedance,Acoustics,Damping factor
Journal
Volume
Issue
ISSN
30
5
0920-5489
Citations 
PageRank 
References 
3
0.60
6
Authors
2
Name
Order
Citations
PageRank
Pedro M. Ramos111517.91
A. Cruz Serra212320.70