[1]许珉,张鸿博..基于Blankman-harris窗的加窗FFT插值修正算法[J].郑州大学学报(工学版),2005,26(04):99-101.[doi:10.3969/j.issn.1671-6833.2005.04.025]
Xu Min,Zhang Hongbo.Windowed FFT interpolation correction algorithm based on Blankman-harris window[J].Journal of Zhengzhou University (Engineering Science),2005,26(04):99-101.[doi:10.3969/j.issn.1671-6833.2005.04.025]
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基于Blankman-harris窗的加窗FFT插值修正算法(
)
《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]
- 卷:
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26卷
- 期数:
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2005年04期
- 页码:
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99-101
- 栏目:
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- 出版日期:
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1900-01-01
文章信息/Info
- Title:
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Windowed FFT interpolation correction algorithm based on Blankman-harris window
- 作者:
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许珉; 张鸿博.
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郑州大学电气工程学院,河南,郑州,450002, 郑州大学电气工程学院,河南,郑州,450002
- Author(s):
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Xu Min; Zhang Hongbo
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- 关键词:
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快速傅立叶变换; 频谱分析; 窗函数; Blankman-harris
- Keywords:
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- DOI:
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10.3969/j.issn.1671-6833.2005.04.025
- 文献标志码:
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A
- 摘要:
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直接利用FFT进行电力系统谐波分析存在较大误差,加窗插值修正算法可以较好提高测量准确性.鉴于Blankman-harris窗在抑制频谱分析长范围泄漏方面具有很优良的性能,采用了双谱线插值修正的原理,推导了Blankman-harris窗双谱线插值修正公式,并利用MATLAB多项式逼近函数求出简洁实用的基于Blankman-harris窗的双谱线插值修正公式的逼近多项式.仿真分析表明,该修正多项式的算法实现容易,而且精度高.
- Abstract:
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There is a large error in the direct use of FFT for power system harmonic analysis, and the interpolation correction algorithm can better improve the measurement accuracy. In view of the excellent performance of Blankman-harris window in suppressing long-range leakage in spectral analysis, the principle of double spectral line interpolation correction is adopted, the Blankman-harris window double spectral line interpolation correction formula is derived, and the MATLAB polynomial approximation function is used to find a concise and practical approximation polynomial based on the Blankman-harris window interpolation correction formula. Simulation analysis shows that the algorithm of modified polynomial is easy to implement and has high accuracy.
更新日期/Last Update:
1900-01-01