搜索资源列表
cluster_VMDaFCM_casedat
- 为了精准、稳定地提取滚动轴承故障特征，提出了基于变分模态分解和奇异值分解的特征提取方法，采用标准模糊C均值聚类(fuzzy C means clustering, FCM)进行故障识 别。对同一负荷下的已知故障信号进行变分模态分解，利用 奇异值分解技术进一步提取各模态特征，通过FCM形成标准聚类中心，采用海明贴近度对测试样本进行分类，并通过计算分类系数和“卜均模糊嫡对分类性能进行评价，将该方法 应用于滚动轴承变负荷故障诊断。
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- 为了直接对内燃机振动谱图像进行诊断识别，提出一种基于改进变分模态分解（ＶＭＤ）、伪魏格纳时频分 析（ＰＷＶＤ）与局部非负矩阵分解（ＬＮＭＦ）的内燃机振动谱图像识别诊断方法-In order to direct the internal combustion engine vibration spectral image for diagnosis recognition is proposed based on the improv
VMD_2D
- 二维变分模态分解可于图象处理等，最新的自适应分解方法-2D Variational Mode Decomposition，WHICH CAN BE USED FOR IMAGE
VMD
- 可以实现滚动轴承的故障采集处理，变分模态分解法很强大(Rolling bearing fault acquisition and processing can be realized, and the variational modal decomposition method is very powerful)
VMD.tar
- 将一个信号分解为几个模态分量，并且不会产生模态混叠现象，对信号的分解很清晰，大量应用于故障诊断。(A signal is decomposed into several modal components, and it does not cause modal aliasing. The decomposition of signals is very clear and widely used in fault diagnosis.)
EEMD
- 对原来的EMD进行了改进，使得对信号的分解更为完美，极大的抑制了端点效应和模态混叠现象。(The improvement of the original EMD makes the signal decomposition more perfect and greatly suppresses the endpoint effect and modal aliasing.)
VMD
- 变分模态分解程序，VMD为主程序（理论信号长度为1s），可在VMD_test中修改需要的信号(Variational modal decomposition procedure)
VDM
- 利用优化的方式选取变分模态分解的参数，非常实用，讲解很详细(The optimization method is used to select the parameters of the variational mode decomposition, which is very practical and detailed)
变分模态分解
- 关于VMD的一篇博士论文，其中比较了EMD和LMD以及VMD的分解效果，证明VMD分解有较好的效果。(A doctoral thesis on VMD, which compares the decomposition effects of EMD, LMD and VMD, proves that VMD decomposition has a good effect.)
VMD_2D
- 变分模态分解，VMD二维算法及测试示例，用来分解二维图像数据(Decomposition of two-dimensional image data)
VMD修改版
- 包含VMD、EMD、EEMD工具箱，可用于变分模态分解、EMD以及EEMD谐波检测对对比分析(Includes VMD, EMD, and EEMD toolboxes for variational modal decomposition, EMD, and EEMD harmonic detection for comparative analysi)
VMD
- 信号处理中的一种新方法，具有分量分解提取功能(A new method in signal processing, which has the function of component decomposition and extraction.)
vmd
- 变分模态分解,用于分解各种信号，可用来故障诊断，特征提取。(Variational mode decomposition, used to decompose various signals, can be used for fault diagnosis and feature extraction.)
VMD
- 变分模态分解的源程序 ，主要用于信号处理(Source program for variational mode decomposition, mainly used for signal processing)
VMDtest
- 改进的变分模态分解算法，有效提取振动信号中故障频率。(The improved variational mode decomposition algorithm can effectively extract the fault frequency in vibration signals.)
宋-3-VMD数据
- 对二维数据进行变分模态分解，可用于地震数据去噪等(Variational mode decomposition of two-dimensional data can be used for seismic data denoising, etc.)
pso-vmd
- 提供 基于粒子群算法优化的变分模态分解算法，适应度函数选择的是模糊熵(This paper presents a variational mode decomposition algorithm based on particle swarm optimization, and the selection of fitness function is fuzzy entropy)
变分模态方法
- 变分模态分解方法能够使一个多频带的故障信号，分解出具有单个频带的子信号，然后使用共振解调方法可实现故障信号的诊断。(VMD method can decompose a multi band fault signal into a single band sub signal, and then use resonance demodulation method to realize fault signal diagnosis.)
蛙跳算法
- 蛙跳算法，基于蛙跳算法实现优化变分模态分解的K和a.(Frog jump algorithm, based on the frog jump algorithm to achieve optimal variational mode decomposition K and A.)
VMD
- VMD（Variational mode decomposition）是一种自适应、完全非递归的模态变分和信号处理的方法。该技术具有可以确定模态分解个数的优点，其自适应性表现在根据实际情况确定所给序列的模态分解个数，随后的搜索和求解过程中可以自适应地匹配每种模态的最佳中心频率和有限带宽，并且可以实现固有模态分量（IMF）的有效分离、信号的频域划分、进而得到给定信号的有效分解成分，最终获得变分问题的最优解。(VMD (variable m