它可有效滤除衰减直流分量并具有较好的频率特性与较高的计算精度。
It can filter efficiently decaying DC component, has clear frequency characteristic, and make calculation with high precision.
并采用滤除衰减直流分量的傅氏算法，提高了数据精度、简化了硬件电路。
The decaying DC component is filtered in the Fourier algorithm, which improves data precision and simplifies hardware circuits.
由于传统傅氏算法无法滤除衰减直流分量，从而导致计算结果出现误差。对如?。
With the simulation result, the paper compares and evaluates the filtering capability of these improved algorithms.
对近年来提出的几种改进傅氏算法进行分类研究，着重分析了其滤除衰减直流分量的方法。
This paper studies several sorts of improved Fourier algorithm in recent years, particularly analyzes the method of filtering decaying DC component.
全波傅氏算法是基于周期信号推导出来的，当采样信号中含有衰减直流分量时，将会产生误差。
The decaying DC component in the sampling signal will bring errors to the full-wave Fourier algorithm, which is derived with periodic signal.
在电力系统中，任何故障或扰动都会使得系统中出现衰减直流分量，它将影响继保装置的测量精度。
Decaying DC offsets are generated following any faults or disturbances in an electric power system, and the measure accuracy of digital relay devices is affected.
要分析电网的暂态特性，还必须考虑衰减直流分量和衰减正弦波，以及电压缺口和频率偏移等问题。
Such problems as the attenuation of DC elements and Sine waveform, voltage sag and frequency deviation should be taken into account in order to analyze the transient process in the power system.
由于傅氏算法原理上的局限，它不能完全滤除非周期分量，尤其对电流故障中常见的衰减直流分量的抑制能力很差。
Because of the limitation of theory, Fourier algorithm is unable to filtering the periodic component, and especially poor in restraining decaying DC component which is common in current malfunction.
快速傅里叶变换(FFT)是电力系统进行谐波分析的主要算法，但当输入信号中含有衰减直流分量时，FFT算法会产生较大的误差。
Fast Fourier transform (FFT) is the main algorithm for harmonic analysis in electric power system, but when there is the decaying DC component in input signal, FFT algorithm will have higher error.
提出一种能很好抑制幅值衰减的直流分量的余弦算法。
This paper presents the Cosine algorithm that can best restrain DC component for amplitude attenuation.
理论上新算法可以消除任意衰减时间常数的直流分量对所求各次谐波分量的影响。
In theory, the influence of the exponential DC component on the fundamental wave component with random decay time constant can be completely eliminated with the algorithm.
理论上新算法可以消除任意衰减时间常数的直流分量对所求各次谐波分量的影响。
In theory, the influence of the exponential DC component on the fundamental wave component with random decay time constant can be completely eliminated with the algorithm.
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