| 基于DFT的频率预估改进算法研究 |
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| 引用本文： | 彭道林.基于DFT的频率预估改进算法研究[J].湖南文理学院学报(自然科学版),2007,19(3):80-82. |
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| 作者姓名： | 彭道林 |
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| 作者单位： | 湖南农业大学,理学院,湖南,长沙,410128 |
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| 摘 要： | 对同步采样方法进行了深入研究,提出了基于DFT相位差的频率估计改进算法,该算法使频率估计和频率跟踪具有了一定的相互促进作用.算法每次要求采样两个周波的数据,然后根据采样点数据进行新的频率估计.此外,文章还对其他软硬件同步方法进行了介绍,对电力系统谐波分析等有一定参考价值.
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| 关 键 词： | 同步采样 DFT 相位差 |
| 文章编号： | 1672-6146（2007）03-0080-03 |
| 修稿时间： | 2007-05-10 |
Research on an Improved Algorithm of Frequency Estimation Base on DFT |
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| PENG Dao-lin.Research on an Improved Algorithm of Frequency Estimation Base on DFT[J].Journal of Hunan University of Arts and Science:Natural Science Edition,2007,19(3):80-82. |
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| Authors: | PENG Dao-lin |
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| Institution: | College of Science, Hunan Agricultural University, Changsha Hunan 410128 |
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| Abstract: | Methods of synchronous sampling were studied in the article,and an improved algorithm of frequency estimation based on DFT was proposed.The algorithm made a mutual promotion between the frequency estimation and frequency track.Data in two continuous periods was samplified according to the algorithm,and then the new frequency estimation was made,besides,other methods of synchronous sampling based on software or hardware are introduced,which is valuable in the analysis of harmonious wave in power system. |
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| Keywords: | synchronous sampling DFT phase difference |
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