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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，有效准确地提取了故障特征信息，验证了方法的可行性和有效性(The parameters of a filter were determined by experience, and that has a great influence on the
results of signal processing. The discrete wavelet packet transform has a larger energy leakage of frequency band,
which obviously affected the results of the envelope demodulation. It is necessary to have a method with a lower
energy leakage of the frequency band before envelope demodulation. The dual tree complex wavelet packet
transform (DT-CWPT) was a new signal processing method that had many good qualities. Because the energy
leakage of the frequency band was smaller when the signal was decomposed by a dual tree complex wavelet
packet transform, the dual tree complex wavelet packet transform was used to extract the fault feature information
in the field of fault diagnosis. In this paper, first, according to the characteristics of Gaussian white noise, whose
frequency was full of the whole frequency band, Gaussian white noise was decomposed by a dual-tree complex
wavel)
- 2014-05-28 17:13:41下载
- 积分：1
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TLBO
this is a source code written in the matlab format for the teaching learning optimization algorithm.
- 2012-03-06 01:33:42下载
- 积分：1
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jisaunerchongjifen
求解任意区域上的二元函数的二重积分，功能强大实用方便！(Solving binary function on any area of the double integral, powerful practical and convenient!)
- 2013-06-06 10:32:44下载
- 积分：1
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demon
对实际采集的舰船辐射噪声进行了demo谱分析，分别采用了窄带解调和宽带解调两种方式，得到了较清晰的轴频和叶频信息。(use narrow-band and broad-band methods to demodulate the ship-radiated noise which is actually colleted, there can see clear axle frequency and blade frequency in the demo spectrum.)
- 2021-01-28 10:58:35下载
- 积分：1
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spintgrl
三次样条插值函数源代码：对输入的数据采用三次样条插值处理,集成了样条,并返回积分值。(Cubic spline interpolation function source code: the input data using cubic spline interpolation processing, integrated spline, and returns integral values.)
- 2013-06-27 11:10:43下载
- 积分：1
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vumat
abaqus fortran 纤维拉伸 子程序(abaqus fortran fiber stress subumat)
- 2014-01-19 13:52:59下载
- 积分：1
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kfilter
说明： 用于石油地震资料数字处理，包括 地震偏移（二维或三维）、滤波程序、重采样、具有很广的应用前景，还可以移植到其他的工程领域。(oil for digital processing seismic data, including seismic migration (2D or 3D), filtering procedures, re-sampling, have a very broad application prospects, but also can be transferred to other engineering fields.)
- 2006-03-06 11:20:40下载
- 积分：1
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应用fluent进行两相流的仿真
说明： 应用fluent进行两相流的仿真，内容充实具体，简易使用，是进行两相流仿真的一个很好的算例。pdf文件。(Using fluent to simulate two-phase flow, the content is rich and specific, easy to use, is a good example of two-phase flow simulation)
- 2020-05-11 18:26:30下载
- 积分：1
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five
计算声发射时域信号特征值：裕值，振幅因子FK、fc，峭度，(Calculation of acoustic emission time-domain signal characteristic values: margin value, the amplitude factor FK, fc, kurtosis,)
- 2012-07-14 15:31:54下载
- 积分：1
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matrix
C++中矩阵运算的实现 nr3.h为其他的书籍代码，测试环境为VS2008(Achieve C++ in matrix operations nr3 code for other books)
- 2014-10-16 10:25:43下载
- 积分：1
