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.
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.
出处
《湖南文理学院学报（自然科学版）》
CAS
2007年第3期80-82,共3页
Journal of Hunan University of Arts and Science(Science and Technology)
关键词
同步采样
DFT
相位差
synchronous sampling
DFT
phase difference
