direct current component meaning in English
直林量
直流分量
Examples
- A protection algorithm can be judged as having strong capability of anti interference if it can eliminate decaying direct current component and high harmonic whose frequency is not the integer times of system base - frequency
摘要能否滤除非系统频率整数倍的谐波和衰减的直流分量是衡量保护算法抗干扰能力的重要特徵。 - After introducing the correlative theory of phaselet algorithm and analyzing fourier algorithm and improved fourier algorithm , the ability of eliminating harmonic current and decaying direct current component of these algorithms are analyzed and compared , and conclusions are given
对傅里叶算法及其改进算法进行了分析，并介绍了小矢量算法的相关理论，对各种算法的滤除谐波和衰减直流分量的能力进行了分析和比较，最后给出了结论：当故障电流信号中存在衰减直流分量时，采用并联补偿傅氏算法能够兼顾速度和精度。 - One is to use fourier transformation to convert the source signal from time domain to frequency domain and to discard high frequency harmonious components upwards of 19 ( gb / t14953 - 93 d5 . 3 demanding ) , then to have static huffman coding to the quantized char array which is composed of reserved direct current component and basic wave and each high frequency " s amplitudes and angles . the other is to use discrete wavelet transformation to convert the source signal from time domain to frequency domain and to set the high frequency coefficients that its absolute value is smaller than the given threshold to zero , then to have dynamic huffman coding to the quantized char array which is composed of multiple , wavelet ' s level , datum length , low frequency coefficients and reserved high frequency coefficients . mass simulinks and analyses under the two circumstances have done to show that data compression ratio is small and the relative error is also small and within the permission of engineering and the compression problem can be solved in theory of measured datum of power system
第一种情况的压缩方法为：采用传统的傅立叶变换把原始信号从时间域变换到频率域，舍弃20次及其以上的高次谐波成分(保证了gb / t14953 ? 93d5 . 3要求) ，然后对保留的直流分量、基波和各次谐波的幅值和相角数据量化后和量化时分别乘以的倍数系数构成一个数组，以字符形式保存，采用静态huffman编码对变换数据进行压缩；采用离散小波变换把原始信号从时间域变换到频率域，然后对分解得到的高频系数进行阈值量化处理，对乘以的倍数系数、小波变换的阶数、小波变换后的低频、各级高频以及原始数据长度、量化后的低频系数以及保留的高频系数大小、位置构成一个数组，以字符形式保存，采用动态huffman编码对这个文件进行压缩。