A new approach to active noise and vibration control-part II: the unknown frequency case

Authors:
Maciej Niedzwiecki;Michał Meller
Affiliations:
Faculty of Electronics, Telecommunications and Computer Science, Department of Automatic Control, Gdansk University of Technology, Gdansk, Poland;Faculty of Electronics, Telecommunications and Computer Science, Department of Automatic Control, Gdansk University of Technology, Gdansk, Poland
Venue:
IEEE Transactions on Signal Processing
Year:
2009

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Abstract

This paper presents a new approach to rejection of complex-valued sinusoidal disturbances acting at the output of a discrete-time stable linear plant with unknown and possibly time-varying dynamics. It is assumed that both the instantaneous frequency of the sinusoidal disturbance and its amplitude may be slowly varying with time and that the output signal is contaminated with wideband measurement noise. It is not assumed that a reference signal, correlated with the disturbance, is available. The proposed disturbance rejection algorithm is an extension of the algorithm derived for the coustant-known-frequency case, described in Part I of this paper.