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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。通过与基于经验模态分解的特征提取方法对比，该方法对标准FCM初始化条件小敏感，在同负荷故障诊断中表现出更好的分类性能 变负荷故障诊断时，除外圈故障特征线发生明显迁移，其他测试样本故障特征线仍在原聚类中心附近，整体故障识别率保持在100 ，因此，该方法能精确、稳定提取故障特征，为实际滚动轴承智能故障诊断提供参考。( In order to extract fault features of rolling bearing precisely and steadily, a method which is based on variational mode decomposition(VMD) and singular value
decomposition was proposed for fault diagnosis using standard
fuzzy C means clustering(FCM). First of all, the known fault signals measured in the same load but with different faults were
decomposed by VMD, and the modes characteristics were
further extracted using singular value decomposition technique,forming the standard clustering centers by FCM, and then the
test samples were clustered by a Hamming nearness approach,
and the classification performance was uated by calculating classification coefficient and average fuzzy entropy. At last, the method was applied in rolling bearing fault diagnosis under
variable loads. By comparing with a method based on EMD,
this approach is not sensitive to the initialization of standard FCM, and exhibits better classification performance in the same load fault diagnosis Fo)
- 2020-11-11 20:59:44下载
- 积分：1
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cazhi
各种插值方法的效果比较
线性内插法，内插法，三次多项式内插法，多项式拟合法
将这些内插的结果及原先的采样点画在同一个图
(The effect of various interpolation methods compared linear interpolation, interpolation, cubic polynomial interpolation, polynomial fitting interpolation of these results and the original sample at the same Chart stipple)
- 2007-12-12 22:20:23下载
- 积分：1
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Wienerdec2
This code is also about weiner deconvolution.
- 2009-11-07 15:28:33下载
- 积分：1
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a
说明： 用matlab编写的程序，实现区域的分裂和合并，并带有图像(Matlab prepared using the procedures of the division and regional merger with images)
- 2009-07-08 16:19:00下载
- 积分：1
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Lfybus
Newton Raphson load flow y bus formation
- 2011-12-12 20:09:11下载
- 积分：1
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Ali_PID_GA
the Ali_PID_ga file is to optimize PID controller for dc motor this fileshould be used with gatoolbox
- 2013-01-07 06:36:27下载
- 积分：1
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active-Contours-2000
Active contour segmentation
- 2011-12-04 17:50:36下载
- 积分：1
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fpsbwnlt
毕业设计中，用Matlab实现了机器人最优路径规划中的全局路径规划，算法采用的是基于方向权的 tBgkUG 二叉树算法，同时结合了哈夫曼编码二叉树的 KNrtdZj综合。(Graduation design, using Matlab to achieve the optimal path planning of robot global path planning algorithm uses a binary tree algorithm based on the direction of the right tBgkUG , combined with the binary tree Huffman coding KNrtdZj comprehensive.)
- 2016-01-19 21:50:15下载
- 积分：1
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DSP
这是一个有关于免疫遗传算法matlab 程序(This is an on immune genetic algorithm matlab program)
- 2010-05-10 16:05:12下载
- 积分：1
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★自适应遗传算法基于MATLAB
说明： 自适应遗传算法(Adaptive genetic algorithm)
- 2019-04-02 09:41:43下载
- 积分：1
