High compression ratio algorithm for power quality signals

R. E. Dapper, A. Susin, S. Bampi, C. Crovato
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引用次数: 2

Abstract

This paper presents a compression algorithm for power quality (PQ) signals, which does not separate the signal into stationary and transient components. The proposed algorithm is composed of a number of different compression techniques which are combined to improve both compression ratio and total computing time. This method is based on a sequence of three phases. The first phase transforms the signal to the frequency domain using the FFT algorithm. In a second phase the signal is approximated by a polynomial approximation algorithm, which is finally compressed by a lossless compression algorithm. The proposed method is characterized by high compression ratio and low computational cost, making its implementation suitable for embedded systems.
电能质量信号的高压缩比算法
提出了一种电能质量(PQ)信号的压缩算法,该算法不需要将信号分成平稳分量和暂态分量。所提出的算法由许多不同的压缩技术组成,这些技术结合在一起以提高压缩比和总计算时间。这种方法是基于三个阶段的序列。第一阶段使用FFT算法将信号变换到频域。在第二阶段,用多项式近似算法对信号进行近似,最后用无损压缩算法对信号进行压缩。该方法具有压缩比高、计算成本低的特点,适用于嵌入式系统。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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