脉冲噪声环境下的自适应陷波滤波

SMCia/99 Proceedings of the 1999 IEEE Midnight - Sun Workshop on Soft Computing Methods in Industrial Applications (Cat. No.99EX269) Pub Date : 1999-06-16 DOI:10.1109/SMCIA.1999.782726

O. Vainio

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引用次数: 3

摘要

考虑采用自适应数字陷波滤波器处理50/ 60hz线频信号。自适应算法允许跟踪主频率成分，使得陷波频率是唯一变化的参数。由于已知电源线频率在一个狭窄的公差范围内，因此可以对陷波频率施加软限制或硬限制。比较了拉普拉斯噪声的软限制和硬限制，研究了对含强谐波的信号进行滤波的效果。

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Adaptive notch filtering in impulsive noise environment

An adaptive digital notch filter is considered for 50/60 Hz line frequency signal processing. An adaptive algorithm allows tracking of the main frequency component such that the notch frequency is the only changing parameter. Since the power line frequency is known to within a narrow tolerance band, it is possible to apply soft or hard limiting on the notch frequency. Soft and hard limiting are compared for Laplacian noise, and the effect of filtering is investigated for a signal with strong harmonic contents.

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SMCia/99 Proceedings of the 1999 IEEE Midnight - Sun Workshop on Soft Computing Methods in Industrial Applications (Cat. No.99EX269)

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