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HHT_power-system_power-quality_disturbances-detect
优秀论文及配套源码。Hilbert-Huang变换(HHT)是一种新的非平稳信号处理技术，该方法由经验模态 分解(EMD)与Hilbert谱分析两部分组成。任意的非平稳信号首先经过EMD方法处理后被分解为一系列具有不同特征尺度的数据序列，每一个序列称为一个固有模态函数(IMF)，然后对每个IMF分量进行Hilbert谱分析得到相应分量的Hilbert谱，汇总所有Hilbert谱就得到了原信号的谱图。该方法从本质上讲是对非平稳信号进行平稳化处理，将信号中真实存在的不同尺度波动或趋势逐级分解出来，最终用瞬时频率和能量来表征原信号的频率含量。
本文研究了基于HHT的暂态电能质量扰动检测方法，介绍了HHT的基本原理和利用HHT检测电能质量多扰动信号的实现方法。仿真试验表明该方法可以实时检测扰动的起止时刻，持续时间和扰动幅度，适用于电能质量多扰动的监测和辨识系统。
(Hilbert-Huang Transform(HHT) is a new non-stationary signal processing technology，including the Empirical Mode Decomposition(EMD) and Hilbert spectral analysis．In this method，arbitrary non-stationary signals was divided into a series data sequence with different characteristic scales after the first EMD treatment，each sequence is called an intrinsic mode function(IMF)，and then each IMF component gained corresponding the Hilbert spectrum though Hilbert spectrum analysis，a summary of all Hilbert spectrum assembled to the spectra of the original signal．In essence，this method is a stable processing for non-stationary signal，which decomposed the different fluctuations or trends in the signal in rum，and represented the frequency content of the original signal using the final instantaneous frequency and energy．
This paper study a method to detect power quality disturbances based on the HHT，in which the principle and the realization of the HHT and the realization of power quality disturbance)
- 2021-04-24 10:48:48下载
- 积分：1
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some_matlab
一些常用的matlab代码，比如线性规划和解方程，各种拟合等(Some commonly used matlab code, such as linear programming reconciliation equation, a variety of fitting)
- 2008-05-10 20:53:31下载
- 积分：1
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Creating-Continuous-Time-Models
创建连续系统模型，为初学者提供一个参考，希望有所帮助(Creating Continuous-Time Models)
- 2012-04-24 16:18:30下载
- 积分：1
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zfft1
ZFFT轨道信号上应用的一些文档，这些文档是从诸多文档中挑选出来的，很有参考价值。分两次上传。其中一次包括ZFFT的MATLAB实现。(The application of the track signal ZFFT some documents, these documents are from a number of selected documents, a good reference. From two. One MATLAB, including the realization of the ZFFT.)
- 2009-05-15 21:27:32下载
- 积分：1
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AR-Matlab
ar模型的功率谱估计 在Matlab环境下的方法展示，供大家参考和使用。(The ar model power spectrum estimation method in Matlab environment show for your reference and use.)
- 2013-04-09 22:14:35下载
- 积分：1
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Fingerprint-matching
基于matlab指纹匹配源代码，特征识别，特征匹配
(Fingerprint matching based on matlab source code, feature recognition and feature matching)
- 2021-03-19 22:29:18下载
- 积分：1
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Krakel
计算水声传播的Krakel程序，属于简正波的计算程序，计算低频声波传播时较适合(underwater acoustic propagting computing program, belong to Normal Mode program, nice when low frequency.)
- 2009-06-11 14:17:21下载
- 积分：1
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Scanned Documents
电磁波电场强度的取向和幅值随时间而变化的性质，在光学中称为偏振。如果这种变化具有确定的规律，就称电磁波为极化电磁波（简称极化波）。如果极化电磁波的电场强度始终在垂直于传播方向的（横）平面内取向，其电场矢量的端点沿一闭合轨迹移动，则这一极化电磁波称为平面极化波。电场的矢端轨迹称为极化曲线，并按极化曲线的形状对极化波命名。因此如果E的失端轨迹是圆，则此电磁波称为圆极化波。(The properties of the orientation and amplitude of the electric field intensity of electromagnetic waves vary with time, which are called polarization in optics. If this change has a definite law, the electromagnetic wave is called polarization electromagnetic wave (called polarization wave). If the electric field intensity of the polarized electromagnetic wave always orientations in the plane perpendicular to the propagation direction, the terminal point of its electric field moves along a closed path. Then the polarized electromagnetic wave is called the plane polarized wave. The vector end track of the electric field is called the polarization curve and is named for the polarized wave according to the shape of the polarization curve. Therefore, if the lost track of E is a circle, the electromagnetic wave is called a circular polarization wave.)
- 2017-12-13 20:46:23下载
- 积分：1
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Numerical
These sources help to solve problems on numerical methods
- 2012-09-05 08:53:23下载
- 积分：1
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a
说明： 人工神经网络的讲解课件，用利于学习者认识神经网络，在MATLAB中实现神经网络。(On artificial neural network software, and help learners understand the neural networks, in the realization of neural networks in MATLAB.)
- 2009-08-08 16:30:20下载
- 积分：1
