Title :
An accuracy improve of amplitude- and phase-frequency characteristics of electrochemical impedance using discrete samples
Author :
Novitskiy, S.P. ; Pechnikov, A.L.
Author_Institution :
NSTU, Novosibirsk, Russia
Abstract :
A corrected method of numerical determination of amplitude- and phase-frequency characteristics of electrochemical systems gotten by discrete electrical signals of impact and response and using Fourier transform is considered. It is proposed to restore first a continuous form of discrete signals using Lagrange polynomial spline before applying Fourier transform.
Keywords :
Fourier transforms; electric impedance measurement; electrochemical analysis; polynomials; splines (mathematics); Fourier transform; Lagrange polynomial spline; amplitude-frequency characteristics; discrete electrical signal; electrochemical impedance measurement; electrochemical systems; numerical determination; phase-frequency characteristics; Accuracy; Fourier transforms; Impedance; Polynomials; Splines (mathematics); Time-frequency analysis; Lagrange; Spectrum; polynomial; spline;
Conference_Titel :
Actual Problems of Electronics Instrument Engineering (APEIE), 2014 12th International Conference on
Conference_Location :
Novosibirsk
Print_ISBN :
978-1-4799-6019-4
DOI :
10.1109/APEIE.2014.7040907
