| 一种提高相角计算精度的方法 |
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| 引用本文： | 黄云志,徐科军.一种提高相角计算精度的方法[J].合肥工业大学学报(自然科学版),2000,23(3). |
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| 作者姓名： | 黄云志 徐科军 |
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| 作者单位： | 合肥工业大学,电气工程学院,安徽,合肥,230009 |
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| 基金项目： | 原机械工业部技术发展基金资助项目! (97JA0 2 0 4 ) |
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| 摘 要： | 文章提出一种利用相角差来计算相角的方法。利用原有的采样数据 ,构造一个新的数据序列 ;在作 FFT后 ,求出两个序列的相角差 ,即可得到相角计算的校正公式 ,消除非整周期采样所造成的泄漏误差 ,提高计算精度。仿真结果表明 ,该方法实现方便 ,精度较高
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| 关 键 词： | 相角计算 校正公式 FFT 泄漏误差 |
A phase calculating method for improving precision |
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| HUANG Yun-zhi,XU Ke-jun.A phase calculating method for improving precision[J].Journal of Hefei University of Technology(Natural Science),2000,23(3). |
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| Authors: | HUANG Yun-zhi XU Ke-jun |
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| Abstract: | A phase calculating method based on the phase difference calculation is proposed in this paper. With this method, a new sequence of data is constructed by using the original set of samples,and FFTs are performed for two sequences of data to calculate the phase difference, and the correcting equation of phase calculation is obtained. The method eliminates the leakage error caused by non inter period sampling and improves the precision of calculation. The results of simulations indicate that this method is simple, but the precision is high. |
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| Keywords: | phase calculation correcting equation FFT leakage error |
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