网站首页

登录

Machinery-Diagnosis

于 2012-01-02 发布文件大小:132KB

 0  168

下载积分: 1 下载次数: 11

我要下载

代码说明：

子波分析是一种日益获得广泛应用的信号处理新技术, 具有良好的时-频局部化特性, 尤其适用于时变及非平稳信号。本文简述了子波函数与子波展开的基本概念, 利用展缩子波和调和子波将信号及信号均方值进行时-频两维分布。最后采用了三种子波分析方法对轴承故障进行诊断, 即使对现有各种方法尚难以诊断的滚动体故障, 也能获得满意的结果, 说明子波分析的确为机械故障诊断提供了强有力的分析手段。(Wavelet a nalysis, as a new technique of signal processing , possesses ex cellent characteristic of time-frequency localization and is suitable for analyzing the time-var ying or transient signals. In this paper , the basic concepts of wavelet function and wavelet expansion are briefly introduced. The time frequency distribution of signal and its energy are obtained by decomposition via dilating wavelet and harmanic wavelet. )

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

RegressionAnalysis
说明： Matlab数值计算，回归分析，多元线性回归，Matlab统计工具箱的使用(Matlab numerical calculation, regression analysis, multivariate linear regression, statistical Matlab Toolbox use)

2006-04-21 12:31:15下载

积分：1
Spline-wavelet-edge-detection
样条小波边缘检测程序,做论文时辅助程序，用于海岸带遥感图像，水边线检测(Spline wavelet edge detection procedure, the auxiliary program to do papers, for coastal remote sensing images, waterlines detection)

2014-11-14 21:50:58下载

积分：1
chuong-trinh-ver-2.0
This paper presents a novel algorithm of hiding secret messages by applying mathematical lemmas and information theory. The proposed algorithm can hide more information with acceptable embedded rate and achieves requirements of information hiding algorithm and simply information extracting. The main idea is applying modern algebra to solve the information hiding problem in multimedia. In order to prevent some attacks on stganography, hidden initial bits of image data pixels are chosen randomly. The extracted information are achieved without the reference of the original image and extracted keys. The experiment results show that our approach is effective and reliable.

2014-02-20 20:49:27下载

积分：1
jiemian
通过matlab的图形GUI界面，对准双曲面齿轮的轮廓进行提取(Through matlab graphical GUI interface, at the gears of the contour extraction)

2008-03-15 11:21:45下载

积分：1
QDPSK-matlab-code
QDPSK理论误码率与实际误码率matlab仿真程序(QDPSK matlab code)

2015-03-01 16:59:23下载

积分：1
frtestsystem
a test system for face recognition on viseo 320X240 color image

2010-07-23 22:34:33下载

积分：1
stats
Matlab 官方工具箱使用说明统计学工具箱使用说明(Matlab toolbox for use of official statistical toolbox for use)

2008-01-26 17:16:45下载

积分：1
seepage
SEEP5( Property , Value ,...) creates a new SEEP5 or raises the existing singleton*. Starting the left, property value pairs are applied to the GUI before seep5_OpeningFunction gets called. An unrecognized property name or invalid value makes property application stop. All inputs are passed to seep5_OpeningFcn via varargin.

2014-10-08 15:48:39下载

积分：1
delay_fd
处理雷达脉冲回波信号，提取目标的距离和多普勒频移信息(Processing of radar pulse echo signal, extract the target distance and Doppler shift information)

2016-12-27 20:53:15下载

积分：1
a
说明：对语音信号进行处理，做fft，语谱图，短时fft，并进行对比(The speech signal processing, do fft, spectrogram, short fft, and compare)

2011-03-13 19:20:20下载

积分：1

696518资源总数
105714会员总数
27今日下载