Journal ArticleDOI
Gradient-based adaptive IIR notch filtering for frequency estimation
Joe F. Chicharo,Tung-Sang Ng +1 more
TLDR
The use of gradient-based algorithms with infinite impulse response (IIR) notch filtering for estimating sinusoids imbedded in noise is investigated and error surface analysis indicates that second-order modules are unimodal and result in guaranteed convergence.Abstract:Â
The use of gradient-based algorithms with infinite impulse response (IIR) notch filtering for estimating sinusoids imbedded in noise is investigated. Two notch filter model structures are presented. The first is for applications where two signal sources with correlated noise components can be assessed. The second can be used in situations where only one composite signal source is available. Error surface analysis indicates that second-order modules are unimodal and result in guaranteed convergence. Higher-order modules are multimodal and require judicious choice of initial parameter estimates. Simulation results are included to demonstrate the performance characteristics of both filter structures. >read more
Citations
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Journal ArticleDOI
Intelligent Neural Network-Based Fast Power System Harmonic Detection
TL;DR: An alternative method using neural network algorithm has achieved satisfactory results for fast and precise harmonic detection in noisy environments by providing only 1/2 cycle sampled values of distorted waveforms to neural network.
Journal ArticleDOI
IIR multiple notch filter design based on allpass filter
Soo-Chang Pei,Chien-Cheng Tseng +1 more
TL;DR: In this paper, a new technique for IIR multiple notch filter design is proposed, where the specification of notch filter is first transformed into that of all-pass filter, and then, an effective approach to design this desired allpass filter is developed.
Journal ArticleDOI
Steady-state analysis of a plain gradient algorithm for a second-order adaptive IIR notch filter with constrained poles and zeros
Y. Xiao,Y. Takeshita,K. Shida +2 more
TL;DR: In this article, the steady-state estimation bias and mean square error (MSE) of a plain gradient (LMS-like) second-order adaptive IIR notch filter with constrained poles and zeros were derived.
Journal ArticleDOI
Adaptive IIR notch filter based on least mean p-power error criterion
Soo-Chang Pei,Chien-Cheng Tseng +1 more
TL;DR: In this paper, a second-order IIR adaptive notch filter (ANF) algorithm based on least-mean p-power (LMP) error criterion is investigated, which is used to cancel 60-Hz interference in the recording of electrocardiograms (ECG).
Journal ArticleDOI
An adaptive notch filter with improved tracking properties
TL;DR: Based on the obtained results, a new ANF algorithm that includes adaptation of both pole contraction and forgetting factors is proposed and the given experimental results confirm the theoretical conclusions and show that the proposed algorithm is highly efficient in practice.
References
More filters
Journal ArticleDOI
Adaptive noise cancelling: Principles and applications
Bernard Widrow,J.R. Glover,John M. McCool,J. Kaunitz,C.S. Williams,R.H. Hearn,James R. Zeidler,Jr. Eugene Dong,R.C. Goodlin +8 more
TL;DR: It is shown that in treating periodic interference the adaptive noise canceller acts as a notch filter with narrow bandwidth, infinite null, and the capability of tracking the exact frequency of the interference; in this case the canceller behaves as a linear, time-invariant system, with the adaptive filter converging on a dynamic rather than a static solution.
Journal ArticleDOI
A minimal parameter adaptive notch filter with constrained poles and zeros
TL;DR: A new algorithm is presented for adaptive notch filtering and parametric spectral estimation of multiple narrow-band or sine wave signals in an additive broad-band process and uses a special constrained model of infinite impulse response with a minimal number of parameters.
Journal ArticleDOI
Adaptive notch filtering for the retrieval of sinusoids in noise
D. B. Rao,Sun-Yuan Kung +1 more
TL;DR: In this article, an adaptive notch filter is developed for the enhancement and tracking of sinusoids in additive noise, colored or white, using a constrained infinite impulse response filter with the constraint enforced by a single parameter termed the debiasing parameter.
Journal ArticleDOI
Performance analysis of an adaptive notch filter with constrained poles and zeros
Petre Stoica,Arye Nehorai +1 more
TL;DR: The analysis verifies the performance exhibited by the ANF, and clarifies the role of some user variables, such as the notch bandwidth and the number of data samples processed, in the adaptive notch filter proposed by A. Nehorai.
Journal ArticleDOI
Design of digital notch filters
TL;DR: It is shown that a second-order digital notch filter is uniquely characterized by two distinct parameters, the notch frequency and the 3-dB rejection bandwidth, as a result, such a filter can be realized using only two multipliers.
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