Identification of nonlinear systems driven by random multisine signals

Authors:
Ching-Hsiang Tseng
Affiliations:
National Taiwan Ocean University, Keelung, Taiwan, R.O.C.
Venue:
SIP '07 Proceedings of the Ninth IASTED International Conference on Signal and Image Processing
Year:
2007

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Abstract

In this paper, we propose a novel method for identification of cubically nonlinear systems using random multisine signals. The proposed method is based on analysis of higher-order auto-moment spectra of random multisine signals. We show that, using properly designed random multisines as driving signals, nonlinear systems can be identified with a highly computationally efficient algorithm with ease. The correctness of the analysis and the effectiveness of the derived algorithm are verified by domputer simulation.