谐波信号

用MATLAB对电网谐波信号检测及谐波补偿进行仿真

Simulating to harmonic signal detecting and compensation in power system with MATLAB

基于DSP的电网谐波信号采集系统设计

Design of Power Harmonic Signal Acquisition System Based on DSP

强噪声背景下确定性谐波信号的模糊滤波Fuzzy滤子的收敛理论

The Fuzzy Filter Approach to the Known Harmonic Signals Under the Background of Powerful Noises

混沌背景中微弱谐波信号检测的SVM方法

Detection of weak harmonic signal embedded in chaotic noise using SVM

对分离出的单分量谐波信号进行Hilbert变换，可以得到各次谐波的瞬时频率和瞬时幅值，即可以得到真正意义上的时频分布。

Accurate instantaneous frequency and instantaneous amplitude of harmonic components can be obtained by using Hilbert transform .

同时，对神经网络的初始化过程进行改进，即将谐波信号进行FFT变换的结果作为网络初始化的依据。

At the same time , the FFT transform results of harmonic signal are regarded as the neural network initialization data .

其测量信号是经过TA末屏电压信号放大器引入谐波信号数字测量分析系统的。

Its measurement signal is to lead into harmonic signal digital measurement analysis system via TA end screen voltage signal amplifier .

通过离散傅立叶变换（DFT）对电网谐波信号进行分析是常用的方法。

Discrete Fourier transform ( DFT ) is one of the most popular methods applied in computer-based measurement of harmonics signals .

谐波信号由从THC实测的电压、电流信号减去其直流分量获得。

The harmonic signal is achieved by subtracting DC component from measured voltage or current of the THC .

得到了不同于目前LDA工作者广为使用的基于纯频谐波信号的分析结果。

The obtained result is different from the CRB for harmonic signals , which is widely used by most LDA engineers today .

提出了利用短窗Morlet复小波计算工频电信号基波与各次谐波信号幅值的算法，其频率特性和计算值的稳定性都优于傅里叶算法。

A short-window Morlet complex wavelet algorithm is presented , which calculates power-frequency fundamental component and harmonics ' amplitudes .

混沌噪声背景下弱谐波信号的GRNN检测

Generalization regression neural network method for detecting weak harmonic signal under background of noisy chaos

补偿电流对参考电流的跟踪误差是周期性的谐波信号，采用常规的PI控制，其控制效果不够理想，且增益过大容易引起系统不稳定。

The error between compensating current and reference current is periodic , wherefore the control effect using traditional PI is not ideal enough , and what is more , too large closed loop gain will cause the system instability .

平滑伪Wigner-Ville（SPWVD）分布是一种优良的时频分析方法，能够在时域频域上对平稳谐波信号及非平稳信号进行联合时频分析。

Smoothed Pseudo Wigner-Ville distribution is an excellent algorithm to analyze the non-steady signal by joint time-frequency analyzing .

通过对Lorenz信号和实际水声信号进行仿真，验证了对低信噪比条件下混响背景和水下环境噪声中微弱谐波信号检测的有效性。

Simulation of the detection model by the Lorenz series and actual underwater acoustic signals validated the effect of weak signals detecting under the reverberation and noise underwater in the case of low signal noise ratio .

该发生器用DSP作控制器，并通过SRAM与DSP进行通讯，实现快速的数据交换，主电路用电子器件实现，通过键盘可方便地控制谐波信号的性质和输出多种谐波信号。

This generator use DSP as the controller , and communicate with DSP by SRAM for the realization of high speed data exchange . The main circuit is realized by the electronic device , and conveniently uses the keyboard to control harmonics ' output .

为了不改变传统保护、测控装置算法，分析了采用线性Lagrange插值原理对合并单元输入的采样值进行数据抽取的方法，进行了误差分析，并分析了谐波信号对插值算法的影响。

In order to apply the traditional algorithms in IED in the substation automation system , the linear Lagrange interpolation algorithm for sampled values from the merging unit is studied . The error and the effect of the harmonic signal on the interpolation algorithm are analyzed .

测量得到在低表压增强的二次谐波信号。

We got the enhanced SHG signal at low surface pressure .

谐波信号的通用频谱校正算法在回转机械监测中的应用

Harmonic Vibration Monitoring of Rotating Machinery Using General Corrected FFT Spectrum

基于对称相关函数法的谐波信号重构

Harmonic Signal Reconstruction by the Symmetrical Correlation Function from Additive Noise

基于四元数模型的二维谐波信号参量估计及应用

Parameters Estimation and Application of Two-Dimensional Harmonics Based on Quaternion

检测强混沌中微弱谐波信号的神经网络方法

The neural network method of detecting weak harmonic signal embedded in chaos

强混沌背景中频带内谐波信号提取

Extraction of Harmonic Signal Embedded in Frequency Band from Strong Chaotic Background

谐波信号频率的混沌检测方法

The Chaotic Detecting Method for the Frequency of Harmonic Signal

基于电压谐波信号分析的单相自适应重合闸

Study on single-pole adaptive reclosure based on analysis of voltage harmonic signal

谐波信号四阶累积量中所含信号信息研究

A study of information included in FOC of harmonic signal

用四阶累积量实现谐波信号频率与功率谱估计

Frequency and Power Spectrum Estimation of Harmonic Signals by the Fourth-order Cumulants

小波谱及其对谐波信号的刻画能力

Wavelet spectrum and its ability to characterize harmonic signals

滚动轴承含噪声谐波信号的欠确定盲源分离方法研究

Underdetermined Blind Source Separation of Noisy Harmonic Signals for Rolling Element Bearing Diagnosis

谐波信号的闭环检测和估计算法及其应用

Closed-loop algorithm for the detection and estimation of harmonic signals and its application