网站首页

登录

dual-tree

于 2014-05-28 发布文件大小:1137KB

 0  257

下载积分: 1 下载次数: 53

我要下载

代码说明：

首先将非平稳的故障振动信号进行双树复小波包分解，得到不同频带的分量；然后对每个分量求其峭度值和相关系数并进行比较；最后选取峭度值和相关系数较大的分量进行软阈值降噪和双树复小波包重构，即可有效地消除振动信号中噪声的干扰，同时保留信号中的有效信息即实现了故障特征信息的提取。(In view of the above situation, a new fault diagnosis method is proposed based on dual-tree complex wavelet packet transform and threshold de-noising. Firstly, the non-stationary fault signal is decomposed into several different frequency band components through dual-tree complex wavelet packet decomposition. Secondly, Kurtosis and the cross-correlation coefficient of each component are obtained and compared. Due to the kurtosis reflecting the signal variations, if the kurtosis value is bigger, the degree of the change of signal is bigger too. The correlation coefficient can reflect the proximity between the component and the original signal at the same time, the correlation coefficient is bigger, the more similar with the original signal. Finally, the components that have a bigger value are chosen to be de-noised by a soft threshold and reconstructed by dual-tree complex wavelet packet transform. The noise interference was eliminated effectively, and the effective si)

文件列表：

dual-tree.pdf,1335225,2014-03-27

下载说明：请别用迅雷下载，失败请重下，重下不扣分！

发表评论

0 个回复

Dog_2
说明：能够检测图片的特征点，利用DOG算子，实际测试方便，算法清晰，有相关参考文章链接(Be able to detect image feature points)

2020-10-22 17:17:22下载

积分：1
lzwGif
gif格式图片生成，包括动画生成，是非常好的入门学习资料。(gif format image generation, including animation generation, is a very good learning materials.)

2013-12-09 20:43:10下载

积分：1
RK龙格库塔计算微分方程组
使用4阶龙格库塔定理计算一阶微分方程组，方程组有3个方程(RK calculation of differential equations)

2018-04-13 13:01:19下载

积分：1
project
说明：基于IDL语言，使用珠海一号内蒙古地区样例数据、珠海一号贵阳省高光谱数据、Landsat5济南上下幅TM数据（用于拼接验证），实现文件基本操作、遥感图像预处理、高光谱数据处理、生态评价、最大似然法分类、K-Means分类等遥感图像初步处理功能。(Based on IDL language, using Zhuhai No.1 Inner Mongolia area sample data, Zhuhai No.1 Guiyang province hyperspectral data, landsat5 Jinan upper and lower TM data (for splicing verification), the preliminary processing functions of remote sensing image, such as file basic operation, remote sensing image preprocessing, hyperspectral data processing, ecological evaluation, maximum likelihood classification, K-means classification, etc.)

2021-03-22 10:49:16下载

积分：1
CarCount
该程序功能是实现对道路流动车辆统计。小模块功能有以下几个：1，对视频解帧并显示。2，对该视频训练背景图片。 3，利用背景图片用减背景法对测试视频进行前景提取，并进行阈值处理，图像分割，找出流动车的连通域。 4，对车辆进行统计。程序包内含有界面说明，以及程序使用的步骤和相关注意事项(The program function is to achieve movement of vehicles on the road statistics. A small module function has the following: 1 solution for video frames and displayed. 2, the video training background image. 3, using the background image used by the background method of testing the prospects for video extraction, and conduct threshold processing, image segmentation, to identify mobile car-connected domain. 4, vehicle statistics. Interface package contains instructions and procedures related to the use of the steps and considerations)

2010-01-04 12:53:46下载

积分：1
ccdwtwatermark
在DWT域的数字水印技术 matlab 编程(in DWT digital watermarking technology Matlab programming)

2007-05-27 13:57:02下载

积分：1
1
说明：分数阶pi控制的直流电机调速系统，速度环是分数阶的，转速环是整数阶的。(DC motor speed control system with fractional order PI control)

2018-01-02 21:02:31下载

积分：1
t4
3d点云的显示与变深度图，visual C++ 代码(he display and variable depth map of 3D point cloud)

2020-12-30 09:59:00下载

积分：1
转换测量卡尔曼滤波CMKF3W
说明：一个简单的小程序，主要是转换测量卡尔曼滤波（CMKF）在三维空间上的matlab实现，并给出了xyz三个方向上的滤波误差(A simple program is mainly the realization of CMKF in three-dimensional space by MATLAB, and the filtering errors in three directions of XYZ are given)

2020-12-01 11:19:26下载

积分：1
点云特征提取详细实用经典的讲述过程及方法FeatureExtractionFromPointClouds
点云特征提取详细实用经典的讲述过程及方法(Point Cloud Feature Extraction practical details about the processes and methods of classic)

2020-07-09 10:18:55下载

积分：1

696516资源总数
106914会员总数
0今日下载