Modified approximation method for identification of nonlinear systems using Volterra models in frequency domain

Authors:
Vitaliy Pavlenko;Viktor Speranskyy;Vladimir Ilyin;Vladimir Lomovoy
Affiliations:
Institute of Computer Systems, Odessa National Polytechnic University, Odessa, Ukraine;Institute of Computer Systems, Odessa National Polytechnic University, Odessa, Ukraine;Institute of Computer Systems, Odessa National Polytechnic University, Odessa, Ukraine;Institute of Computer Systems, Odessa National Polytechnic University, Odessa, Ukraine
Venue:
AMERICAN-MATH'12/CEA'12 Proceedings of the 6th WSEAS international conference on Computer Engineering and Applications, and Proceedings of the 2012 American conference on Applied Mathematics
Year:
2012

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Abstract

The development of the efficient technique of the experimental research of the continuous communication channel for amplitude-frequency characteristics (AFC) identification is given. The given technique is Volterra model based and founded on the application of the modified approximating method of identification of the nonlinear dynamic system in frequency domain. The identification is carried out by means of compiling the linear combinations of the responses from researched system to the input test polyharmonic signals with different amplitudes. The developed software-hardware tools implementing the methodology of the identification are used for construction of the informational model of the communication channel in the form of the first and second order AFCs on the basis of the data of the input-output experiment, using harmonic and biharmonic test signals.