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Generalized adaptive notch filters with frequency debiasing for tracking of polynomial phase systems
Abstract
Generalized adaptive notch filters are used for identification/tracking of quasi-periodically varying dynamic systems and can be considered an extension, to the system case, of classical adaptive notch filters. For general patterns of frequency variation the generalized adaptive notch filtering algorithms yield biased frequency estimates. We show that when system frequencies change slowly in a smooth way, the estimation bias can be substantially reduced by means of post-filtering of the frequency estimates. The modified (debiased) algorithm has better tracking capabilities than the original algorithm.
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- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.automatica.2006.08.004
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie z listy filadelfijskiej
- Published in:
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AUTOMATICA
no. 43,
pages 128 - 134,
ISSN: 0005-1098 - Language:
- English
- Publication year:
- 2007
- Bibliographic description:
- Niedźwiecki M., Sobociński A.: Generalized adaptive notch filters with frequency debiasing for tracking of polynomial phase systems// AUTOMATICA. -Vol. 43., (2007), s.128-134
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.automatica.2006.08.004
- Verified by:
- Gdańsk University of Technology
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