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haartest
- 这是关于小波特征变换，其中这里的提取特征分为几个一是零中心归一化瞬时幅度的频谱最大值，二是包络平方值的两倍包络均值平方之差。三是瞬时频率的方差。四是大小波系数的方差，五是信号的四阶累积量之比。-This is the wavelet transform features, which extract features here is divided into several one is zero center normalized spectral maximum of instantaneo
wavelet-packets-analysis
- 针对风力发电机组传动系统故障时特征量提取困难的问题,提出了改进的小波包结合包络谱的故障诊断新方法。深入研究了小波包频带错乱的问题，对小波包实施了改进，消除了频带错乱的缺陷-In view of the wind turbine drive system characteristics, failure and difficult problems, puts forward the improved wavelet packet combining spectral envelope, a ne
DEA
- 面板数据的数据包络（DEA）分析，matlab程序-Panel Data envelopment (DEA) analysis, matlab program
lmd1
- 很不错的lmd分析程序，里面有画包络，找纯频，加上自己改进的一些算法-Very good lmd analysis program, which has drawn the envelope, looking for pure frequency, plus some of their own algorithms to improve
qiuimf
- 安装过emd工具的，可直接求各imf分量的瞬时频率，包络频谱-Emd tools installed, you can find a direct component of the instantaneous frequency of each imf, the envelope spectrum
JakesModel
- jakes模型,用来仿真无线信道的一些特点，通过对一些参数的仿真，进一步仿真包络相位精度等-jakes model
zhoucheng
- 参考了张家凡的振动信号的包络解调分析方法研究及应用，实现了轴承信号的仿真-Reference envelope demodulation method and application Zhang Fan vibration signal to achieve a simulation of bearing signals
FSK
- 非相干解调器（包络检波法）设计1 摘要本课程设计主要是通过利用MATLAB 集成环境下的SIMULINK 仿真平台对系统建模，设计一个2ASK 非相干解调器-Non-coherent demodulator (envelope detection method) design an abstract design of this course is mainly through the use of MATLAB SIMULINK simulation platform integrated e
baoluo
- 此函数计算出信号的上下包络，可以用于包络检测，另外通过上下包络计算出信号的均值函数和包络函数，可以用在LMD某个步骤中。- This function calculates the upper and lower envelope signal of the envelope detection can be used, in addition to the upper and lower envelope by calculating the mean of the function an
Ti3
- 应用LPC/AR方法提取该帧的频谱包络并画图-LPC/AR method is applied to extract the spectral envelope and drawing frame
boluofenxi
- 介绍了应用希尔伯特变换在labview中实现包络线的绘制方法-Describes the application of the Hilbert transform rendering method implemented in labview envelope
Study-on-compound-fault-diagnosis
- 针对滚动轴承复合故障信号特征难以分离的问题， 提出将双树复小波变换和独立分量分析( ICA) 结合的故障诊断方 法 该方法首先将非平稳的故障信号通过双树复小波变换分解为若干不同频带的分量 由于各个分量存在一定的频率混叠， 对 故障信号特征提取有很大的干扰， 进而引入 ICA 对各个分量所组成的混合信号进行盲源分离， 从而尽可能消除频率混叠 最后 对从混合信号中分离出来的独立分量信号进行希尔伯特包络解调， 即可实现对复合故障特征信息的分离和故障识别-Aiming at the diff
energy-leakage--dual-tree
- 首先根据高斯白噪声频率充满整个频带的特性，通过双树复小波包变换对高斯白噪声进行分解，利用频带能量泄漏的定量分析方法，验证了双树复小波包变换具有较低的频带能量泄漏特性；其次利用双树复小波包变换逐层分解信号，对每层分解所得分量求其FFT谱的峭度，得到基于双树复小波包变换的谱峭度图，根据图中峭度最大的原则，可以自动准确的选择信号分解最佳层数和最佳分量；最后将基于双树复小波包变换的谱峭度图的故障诊断方法应用于实际工程中，对齿轮故障振动信号进行分析，选择最佳分解层数和分量后利用希尔伯特包络解调，有效准确地
gundongzhoucheng
- 包络分析大多在原始振动加速度信号基础上进行， 受噪声干扰等因素的影响较大 通过对原始振动信号自相关函数作包络分析， 可以有效地抑制噪声， 突出反映故障调制特征-s． Most of the envelope analyses are based on original vibration accelera- tion signal，which is seriously influenced by noise interference． The noise is effectively sup
blx
- 读取文件数据，提取包络线，保存包络线数据到文件-Reads the file data, extract the envelope, the envelope data saved to a file
LMD
- 局域均值分解函数，主要思想是把一个时间序列的信号,分解成不同尺度的包络信号和纯调频信号,然后获得信号的时频分布。-Local mean decomposition function, the main idea is to signal to a time series into different scales of the envelope signal and pure FM signal, and then when you get the signal frequency distri
The-Hilbert-transform
- MATLAB希尔伯特Hilbert变换求包络谱 源程序代码-MATLAB Hilbert spectral envelope of the Hilbert transform
FSK_decode_zeroANDone
- FSK包络判决，通信方面，FSK调制以及解调过程的matlab实现-FSK envelope judgment
hua_baol-hua_fft
- 两个求信号包络谱和幅值谱的matlab程序，也可求功率谱。-2 effective procedures for the signal envelope spectrum and amplitude spectrum
lmd_dizhen
- 局部均值分解的matlab代码，用三次样条插值做的包络线。-The local mean decomposition matlab code, using the envelope three spline interpolation.