利用时域数据在有噪声的情况下精确测量线路频率

Conference Proceedings. 10th Anniversary. IMTC/94. Advanced Technologies in I & M. 1994 IEEE Instrumentation and Measurement Technolgy Conference (Cat. No.94CH3424-9) Pub Date : 1994-05-10 DOI:10.1109/IMTC.1994.351932

Jong-Hoon Lee, M. Devaney

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引用次数: 12

摘要

提出了一种利用时域数据精确测量有噪声的正弦信号频率的新方法。这种基于软件的方法是基于对零交叉点的估计，并测量偶数估计的零交叉点之间的运行时间。该方法是迭代的，因为在其分辨率允许的范围内，采样率被调整为估计频率的倍数，这允许频率测量的逐步细化。

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Accurate measurement of line frequency in the presence of noise using time domain data

A new technique for the accurate measurement of the frequency of sinusoidal signals in the presence of noise using time-domain data is proposed. This software-based method is based upon an estimation of the zero crossings and measures the elapsed time between an even number of the estimated zero crossings with smoothing. The method is iterative in that the sample rate is adjusted, in so far as its resolution permits, to be a multiple of the estimated frequency and this permits a progressive refinement of the frequency measurement.<>

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Conference Proceedings. 10th Anniversary. IMTC/94. Advanced Technologies in I & M. 1994 IEEE Instrumentation and Measurement Technolgy Conference (Cat. No.94CH3424-9)

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