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On-line model identification for active noise control using integrated bispectrum analysis

Główka T.

Archives of Control Sciences

2007

Vol. 17, no. 2

191-207

In the paper a problem of the on-line model identification of secondary and feedback paths in the feedforward ANC system is considered. The system is closed-loop, with low signal-to-noise ratio and with the disturbance affecting the input and output of the identified paths. To overcome the mentioned difficulties a new approach to the identification based on the higher-order spectra is presented. The integrated bispectrum-based identification method is proposed and the results of its applying are provided and compared with the results derived from the classical methods. The estimates are computed on the basis of data acquired in the laboratory (real-world) experiment as well as in the computer simulations.