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Ventajas del analisis Wavelet sobre el analisis de Fourier para la interpretacion del ruido electroquimico

机译:小波分析相对于傅立叶分析在解释电化学噪声方面的优势

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摘要

Given its simplicity and low cost compared to other types of methodologies, the measurement and interpretation of Electrochemical Noise, is consolidating itself as one of the analysis methods most frequently used for the interpretation of corrosion. As the technique is still evolving, standard treatment methodologies for data retrieved in experiments do not exist yet. To date, statistical analysis and the Fourier analysis are commonly used in order to establish the parameters that may characterize the recordings of potential and current electrochemical noise. This study introduces a new methodology based on wavelet analysis and presents its advantages with regards to the Fourier analysis in distinguishing periodical and non-periodical variations in the signal power in time and frequency, as opposed to the Fourier analysis that only considerers the frequency.
机译:与其他类型的方法相比,它的简单性和低成本,电化学噪声的测量和解释正在巩固自己,成为最常用于解释腐蚀的分析方法之一。随着技术的不断发展,实验中检索到的数据的标准处理方法尚不存在。迄今为止,通常使用统计分析和傅立叶分析来建立可表征电位和电流电化学噪声记录的参数。这项研究介绍了一种基于小波分析的新方法,并提出了其在区分时间和频率信号功率的周期性和非周期性变化方面与傅立叶分析相比的优势,这与仅考虑频率的傅立叶分析相反。

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