Parameter estimation for harmonics by the quadratic interpolation

Rong Ching Wu, Tai Yi Yang, Ting Chia Ou

研究成果: Conference contribution

摘要

This paper offers a complete method to find the exact amplitude, frequency, and phase of harmonics. A simulated signal is taken to fit the real one. When this simulated signal is equal to the real one, the parameters of the simulated signal are identical to the real values. This method includes three major processes, initial value setting, gradient method, and quadratic interpolation. In initial value setting, this process analyzes the scale data with the two highest amplitudes of each band, and the precise values will be found. The difference between simulated and practical signals could be expressed as a least mean square problem. The gradient method provides the initial condition for the quadratic interpolation. The minimum error search is accomplished by the quadratic interpolation, which could improve the search efficiency and reduce iteration time. After a few iterations, the method will obtain the exact harmonic parameters.

原文English
主出版物標題Proceedings of the IASTED Asian Conference on Modelling and Simulation
頁面41-46
頁數6
出版狀態Published - 2007
事件IASTED Asian Conference on Modelling and Simulation - Beijing, China
持續時間: 2007 10月 82007 10月 10

出版系列

名字Proceedings of the IASTED Asian Conference on Modelling and Simulation

Conference

ConferenceIASTED Asian Conference on Modelling and Simulation
國家/地區China
城市Beijing
期間07-10-0807-10-10

All Science Journal Classification (ASJC) codes

  • 計算機理論與數學
  • 計算力學

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