Publication IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer SciencesVol.E89-ANo.11pp.3298-3305 Publication Date: 2006/11/01 Online ISSN: 1745-1337 DOI: 10.1093/ietfec/e89-a.11.3298 Print ISSN: 0916-8508 Type of Manuscript: PAPER Category: Systems and Control Keyword: on-line frequency identification, sinusoidal signal, adaptive method, filter theory,
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Summary: This paper discusses the on-line frequency identification problem for a measured sinusoidal signal by using the adaptive method and filter theory. The proposed method is based on an identity between the sinusoidal signal and its second order derivative. For a set of chosen parameters, the proposed method is robust to the initial phase, the amplitude, and the frequency in a wide range. The convergence rate can be adjusted by the chosen parameters. The estimation error mainly depends on the frequency of the sinusoid, the measurement noise and a key design parameter.
