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A shortest data window algorithm for detecting the peak value of sinusoidal signals

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4 Author(s)
Hurng-Liahng Jou ; Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan ; Hui-Yung Chu ; Ching-Lien Huang ; Chin-Hsing Chen

A digital algorithm for detecting the peak value of known-frequency sinusoidal signals is proposed. The algorithm detects the peak value of a sinusoidal signal exactly and uses only two successive sampled data points for each peak value calculation. Hence, its transient response is only a sampling period. Simulation results show that this algorithm is applicable to detecting the peak value of steady-state, varying, and decaying sinusoidal signals used in power system telecontrol. Therefore, this technique is very useful for digital systems in which the peak value of sinusoidal signals must be detected

Published in:

IEEE Transactions on Industrial Electronics  (Volume:37 ,  Issue: 5 )