An adaptive quasi-notch filter for a biased sinusoidal signal estimation

@article{Fedele2011AnAQ,
  title={An adaptive quasi-notch filter for a biased sinusoidal signal estimation},
  author={Giuseppe Fedele and Andrea Ferrise and Pietro Muraca},
  journal={2011 9th IEEE International Conference on Control and Automation (ICCA)},
  year={2011},
  pages={1060-1065}
}
This note presents an alternative approach to classical adaptive notch filters designed to identify the frequency, magnitude, phase and offset of a biased sinusoidal signal. The algorithm takes advantages of an adaptive law for the resonant frequency of a third-order generalized integrator as a part of an orthogonal-signals generator system. The resulting estimator presents a dynamic order equal to 4. The strength of the discussed strategy results in a fast and accurate signal tracking… CONTINUE READING
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