Description: 是一些 数字相关法的论文
1.FFT法与数字相关法在相位测量上的比较.pdf
2.采用数字相关法测量相位差.pdf
3.基于FFT谱分析算法的高精度相位差测量方法.pdf
4.基于Hilbert变换的相位测量法与数字相关测相法的比较.pdf
5.基于虚拟仪器技术和互相关原理的相位测量仪.pdf
6.数字化相位差测量算法的研究.pdf
7.相位差的数字化测量研究.pdf
8.虚拟仪器测量周期信号相位的仿真设计.pdf-Are some figures related to law 1.FFT law and the number of papers related to phase measurement in comparison. Pdf2. Using digital correlation method phase. Pdf3. Algorithm based on FFT spectral analysis phase of high-precision measurement method. Pdf4. Based on Hilbert transform phase measurement method and the number of relevant comparison test phase. pdf5. Based on Virtual Instrument Technology and inter-related principles of the phase measurement. pdf6. digitized phase measurement algorithm. pdf7. phase of digital measurement. pdf8 . virtual instrument measurement of periodic signal design phase of the simulation. pdf Platform: |
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Author:杨志杰 |
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Description: 实现EMD分解，并对原始信号进行hilbert谱分析，通俗易懂，操作方便-The realization of EMD decomposition, and the original signal hilbert spectral analysis, user-friendly, easy to operate Platform: |
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Author:joice5 |
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Description: 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 Platform: |
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Author:NBB |
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Description: 非平稳信号经过分解后，对其进行谱分析，此希尔伯特谱程序，弥补了了以前的缺陷-Non stationary signal through decomposition, the spectral analysis, the Hilbert spectrum procedures, make up for the previous defect Platform: |
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Author:xiaoliu |
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Description: The Hilbert–Huang method is presented with modifications,
for time-frequency analysis of distorted power quality signals.
The empirical mode decomposition (EMD) is enhanced with
masking signals based on fast Fourier transform (FFT), for separating
frequencies that lie within an octave. Further, the instantaneous
frequency and amplitude of the constituent modes obtained
by Hilbert spectral analysis are improved by demodulation. The
method shows promising time-frequency-magnitude localization
capabilities for distorted power quality signals. The performance
of the new technique is compared with that of another multiresolution
analysis tool, the S-transform—a phase corrected wavelet
transform. Analysis on actual measurements of transformer inrush
current from an existing laboratory setup is used to demonstrate
this technique. Platform: |
Size: 835584 |
Author:imed |
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Description: 该程序用于Hilbert谱分解，可分析非平稳和非线的信号-The procedures used for the Hilbert spectral decomposition and analysis of non-stationary and non-linear signal Platform: |
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Author:王伟 |
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Description: 测量6205深沟球轴承的故障振动加速度信号, 对信号进行时频分析, 利用经验模态分解方法将振动信号分解成不同特征时间尺度的固有模态函数,对每个固有模态函数进行Hilbert 变换得到Hilbert 谱,通过谱分析识别轴承的故障部位和类型, 证实Hilbert 谱的有效性-Measuring 6205 deep groove ball bearing fault vibration acceleration signal, the signal frequency analysis, empirical mode decomposition method to decompose the vibration signal into different characteristic time scales of intrinsic mode functions, the Hilbert transform of each intrinsic mode functions Hilbert spectrum, spectral analysis to identify the location and type of bearing failure, confirmed the effectiveness of the Hilbert spectrum Platform: |
Size: 694272 |
Author:张力 |
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Description: 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。-Hilbert-Huang transform (HHT) is a new non-stationary signal processing techniques, the method by the empirical mode decomposition (EMD) and Hilbert spectral analysis of two parts. Any non-stationary signals are first processed through the EMD method after being broken down into a series of data sequences with different characteristic scales, each sequence is called an intrinsic mode function (IMF), then Hilbert spectrum analysis of each component of the corresponding IMF component of the Hilbert spectrum, Hilbert spectrum is obtained summary of all the spectrum of the original signal. This method is essentially non-stationary signals smooth process, different scales of the signal in real fluctuation or trend gradually break out, ultimately the instantaneous frequency and energy to characterize the frequency content of the original signal. Platform: |
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Author:尚允坤 |
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Description: 功率谱是功率谱密度函数的简称，它定义为单位频带内的信号功率。它表示了信号功率随着频率的变化情况，即信号功率在频域的分布状况。-Spectral analysis or Spectrum analysis is analysis in terms of a spectrum of frequencies or related quantities such as energies, eigenvalues, etc. In specific areas it may refer to:
Spectroscopy in chemistry and physics, a method of analyzing the properties of matter their electromagnetic interactions
Spectral estimation, in statistics and signal processing, an algorithm that estimates the strength of different frequency components (the power spectrum) of a time-domain signal. This may also be called frequency domain analysis
Spectrum analyzer, a hardware device that measures the magnitude of an input signal versus frequency within the full frequency range of the instrument
Spectral theory, in mathematics, a theory that extends eigenvalues and eigenvectors to linear operators on Hilbert space, and more generally to the elements of a Banach algebra
In nuclear and particle physics, gamma spectroscopy, and high-energy astronomy, the analysis of the output of a pulse height analyze Platform: |
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Author:kalvin |
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Description: HHT是HuangE等提出的新的信号处理方法，适用于非线性非平稳的信号分析，被认为是近年来对以傅立叶变换为基础的线性和稳态谱分析的一个重大突破。-The new signal processing method, proposed by Huang E et al., is suitable for nonlinear and non-stationary signal analysis, which is considered as a major breakthrough in the linear and steady-state spectral analysis based on Fourier transform in recent years. Platform: |
Size: 6538240 |
Author:叶华迅 |
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Description: 迭代法解hilbert方程.
分析了Hilbert方程的条件数和三种迭代法的谱半径，并用Jacobi迭代、gauss_seide迭代、SOR迭代法解Hilbert方程。-Hilbert iterative method for solving equations and analysis of the condition number of the spectral radius of three kinds of iterative method Hilbert equations and iteration Jacobi, gauss_seide iteration, SOR iterative method for solving Hilbert equation. Platform: |
Size: 52224 |
Author:wul |
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Description: 希尔伯特黄变换的C语言实现，包括希尔伯特谱分析，瞬时频率的求解等。(Hilbert Huang Transform C language, including Hilbert spectral analysis, such as instantaneous frequency solution.) Platform: |
Size: 32768 |
Author:墨墨梦瑶 |
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Search - Hilbert spectral analysis