摘要
本文基于插值快速傅里叶变换原理,改进了一种基于汉宁(Hanning)窗的三谱线估计插值方法;采用传感器采样的线性拟合算法和频率跟踪技术动态调整采样频率方案,设计出了一款基于LabWindows/CVI的列车逆变电源分析仪,成功用于电力谐波分析,提高了系统的分析精度,仿真实验和测试结果表明这种全局修正的插值快速傅里叶变换算法是成功的。
Based on interpolated FFF, the interpolation by three spectral lines method is mended globally using Hanning window. By introducing a linear ftting method for sensor sampling and dynamically adjusting sampling frequency using frequency tracking technique, a harmonic analyzer for train power-inverter was designed under the environment of Labwindows/CVI, which can be used successfully in power harmonic analysis. Simulation and test results show that the analysis precision of the system parameters is improved and the proposed algorithm is feasible.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2007年第9期1695-1699,共5页
Chinese Journal of Scientific Instrument
关键词
谐波分析
快速傅里叶变换
三谱线估计插值法
汉宁窗
线性拟合
harmonic analysis
FFF
interpolation by three spectral lines
Hanning window
linear fitting method
