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xierbotebianhuan

于 2013-09-24 发布 文件大小:350KB
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  希尔伯特变换和小波包结合的齿轮箱故障诊断方法,里面有具体的介绍小波包的分层方法,非常详细,可以下下来看看(Hilbert transform and wavelet packet of gearbox fault diagnosis method, there is detailed introduction inside the layered method of wavelet packet is very detailed, can down and have a look )

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基于希尔伯特变换和小波包节点能量法的齿轮箱故障诊断研究.pdf,374821,2012-11-20

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  • 61
    说明:  提出了一种结合SVD的小波变换方法,对其在外弹道测量数据中的野值剔除进行了研究。对观测数据进行小波分解,将小波分解后的近似分量和细节分量组合实现相空间重构,作为SVD方法的输入观测矩阵,根据奇异 熵增量准则,对奇异值进行筛选,根据SVD逆变换重构原信号。这一方法克服了Hankel矩阵相空间构建方法数据 端点失真问题。以小波分解后分量重构的相空间可以满足正交性,进一步提高了SVD进行数据降噪和野值检测的精度。仿真数据和试验数据处理结果证明了这一方法的有效性。(Proposed a method of combining the SVD wavelet transform its outer ballistic measurement data in excluding outliers were studied. Observational data on wavelet decomposition, wavelet decomposition of the approximate combined component and detail component to achieve the phase space reconstruction, as the input observation matrix SVD method, based on singular entropy increment standards, singular value filter, according to the inverse transform heavy SVD structure of the original signal. This approach overcomes the Hankel matrix phase space construction method data endpoint distortion. Wavelet decomposition component of reconstruction phase space satisfy orthogonality, to further improve the SVD for data noise reduction and outlier detection accuracy. Simulation data and experimental data processing results prove the effectiveness of this approach.)
    2013-06-02 11:10:21下载
    积分:1
  • quzao
    主要是用于心电信号的去噪,对于噪声下的微弱电信号的一种提取(For ECG denoising, extract a weak signal in the noise)
    2012-05-16 11:43:35下载
    积分:1
  • cwt
    基于小波变换的码元速率估计,估计精度很高。还有测试信号和mpsk函数功能。(Symbol rate based on wavelet estimation, estimation accuracy is high. There are test signals and mpsk Function.)
    2015-11-17 15:05:17下载
    积分:1
  • MATLAB的软件包,用于小,安装到自己的MATLAB工具箱中-Wavelab850
    MATLAB的软件包,用于小波变换,安装到自己的MATLAB工具箱中。(MATLAB software package for wavelet transform.)
    2020-06-21 07:20:01下载
    积分:1
  • Y649678
    基于多小波变换的医学图像融合方法研究基于多小波变换的医学图像融合方法研究(Based on Multi-Wavelet Transform Method for Medical Image Fusion Based on Multi-Wavelet Transform Medical Image Fusion Method)
    2021-04-28 10:38:44下载
    积分:1
  • frwt_8876
    一种新型分数阶小波变换及其应用,讨论了新型分数阶小波变换的应用(A new Fractional Wavelet Transform and Its Applications, discussed the application of the new fractional wavelet transform)
    2012-09-05 21:21:40下载
    积分:1
  • ESPRIT_2D
    这篇代码介绍了一种阵列信号处理的一种算法,具有很大的作用。(This code describes an algorithm for an array signal processing, has a big role.)
    2021-04-23 09:38:48下载
    积分:1
  • NumIntTest
    加速度振动信号积分为速度振动信号输出,如需要可再一次积分,变换为位移信号(Vibration signal of the acceleration integral transform)
    2020-11-27 14:29:30下载
    积分:1
  • second-generation-wavelet
    二代小波的labview实现,详细介绍在labview中如何实现二代小波(Labview implementation of second generation wavelet)
    2011-07-31 15:18:34下载
    积分:1
  • MedCosmCGHMaker_13
    数字全息和计算程式 计算全息图的制作和再现过程主要分为以下几个步骤: 1抽样。得到物体或波面在离散样点上的值。 2.计算。计算物光波在全息平面上的光场分布。 3.编码。把全息平面上光波的复振幅分布编码成全息图的透过率变化。 4.成图。在计算机控制下,将全息图的透过率变化在成图设备上成图。如果成图设备分辨率不够,再经光学缩版得到实用的全息图。 5.再现。这—步骤在本质上与光学全息图的再现没有区别。 (Digital Holography and CGH for calculating the production and reproduction process is divided into the following steps: 1 sampling. Be objects, or wavefront-like point in the discrete value. 2. Calculated. Calculation of complex light plane in the holographic optical field distribution. 3. Coding. The hologram plane the complex amplitude distribution of light into a hologram coding changes in the transmittance. 4. As Fig. Under the control of the computer, the hologram transmittance change in the mapping device mapping. Mapping equipment, if not resolution, then reduced by the optical version of a hologram to be practical. 5. Reproduction. This is- these in essence a hologram and the optical reproduction is no different.)
    2009-06-24 00:45:57下载
    积分:1
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