all phase FFTharmonic analysisphase invariancepseudo-fundamental harmonicAt present, phase measurement method of power frequency three-phase power signal containing multiple harmonic, is generally based on the Hanning window FFT correction measurement methods. But their accuracy limited by the conventional ...
为深入研究全相位FFT(all-phase FFT,apFFT)的相位谱性质以扩大其应用范围,本文从极坐标相位谱图、矢量分析、矩阵分析及其仿真实验等多个角度阐述了apFFT的相位测量机理,较透彻地剖析了apFFT的无需频谱校正的相位测量性质和抑制谱泄漏性能;实验表明,apFFT的测相方差至少比同阶数的FFT测相方差低2/3以上,因而"全相位计...
A method was provided to reduce the PAPR,which was based on all-phase FFT and pulse shaping technology.The new pulse sequences in this method can be generated by multiplying the raw data sequence and the forming pulse matrices,so that a certain correlation can exist between sub-carrier symbols...
全波傅氏算法(FFT) 5) Fourier analysis technique 傅立叶相位法 1. In the second part, based on fluctuation theory and Fourier phrase analysis, the one-DimFourier analysis techniqueon cloud motion winds is deduced, and the error of the technique is analyzed. ...
4) All-phase FFT spectrum analysis 全相位FFT频谱分析 5) all phase spectrum analysis 全相位DFT谱 6) relative phase spectrum 相对相位频率谱 1. Anomalous discrimination ofrelative phase spectrumin the complex wave signal; 复合波相对相位频率谱异常区分法 ...
FFT-Tuned Phase-Locked Loop for Vortex Shedding Signal 以調整迴路之中心頻率及增益係數,以便能即時的追蹤渦流溢放信號,最後再利用相位鎖定迴路輸出之數值方波搭配計數器及計時器,求得最終之渦流... 胡志忠(Chih-Chung Hu) - 《中國機械工程學刊》 被引量: 0发表: 2009年 考慮控制迴...
www.nature.com/scientificreports OPEN Winner-take-all in a phase oscillator system with adaptation Received: 20 October 2017 Accepted: 15 December 2017 Published: xx xx xxxx Oleksandr Burylko1,Yakov Kazanovich2 & Roman Borisyuk2,3 We consider a system of generalized phase oscillators with a ...
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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。 2) Phase angle 相角 1. Rotor inter-turn short circuit fault diagnosis based on the change of amplitude and phase angle; ...
Insets are the fast Fourier transform (FFT) images of the dotted areas Full size image We have characterized the optical properties of the photonic textures. The probe light with various wavelengths of 980 nm (Fig. 4a), 1300 nm (Fig. 4b), and 1550 nm (Fig. 4c) exhibits ...