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NMF
NMF分解程序,非负矩阵分解程序,实现非负矩阵分解(Non Maxtrix f)
- 2012-03-22 20:45:14下载
- 积分:1
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针对矿浆管道工况调整给泄漏检测带来的干扰
说明: 针对矿浆管道工况调整给泄漏检测带来的干扰,准确提取泄漏信号的特征量是降低泄漏误报、漏报的关键。为此,提出了一种基于经验模态分解(EMD)、Hilbert能量谱与变量预测模型(VPMCD)相结合的泄漏检测方法。该方法首先将压力信号分解成若干个固有模态函数(IMF)之和,然后将IMF分量进行Hilbert变换得到局部Hilbert能量谱,依据能量分布的标准差选择最能准确反映矿浆管道运行工况的局部能量谱作为特征值向量,最后通过VPMCD分类器建立泄漏识别模型。将该方法应用于泄漏检测中,实验结果表明,矿浆管道在正常运行、泄漏和工况调整状态下,识别率达到95%,并综合分析流量信号,提高了泄漏检测精度。(According to the interference to leak detection of mineral slurry pipeline caused by work condition adjustment,effectively extracting the characteristics of leak signal is the key to reduce the leakage of the false negatives and false positives.In this paper,a leak detection method based on EMD and VPMCD is proposed. In this method,the pressure signals are decomposed into several IMF components, and then take local Hilbert energy spectrum which most accurately reflect the pipeline operation conditions as feature values, Finally the leak identification model is established by VPMCD classifier.When the method is applied to the leak detection,the experimental results show that under the conditions of normal operation,leakage and work condition adjustment, the recognition rate of the mineral slurry pipeline reaches 95%,and by comprehensively analyzing the flow signals, it also improves the accuracy of leak detection.)
- 2020-12-03 10:09:25下载
- 积分:1
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插值与拟合,解方程,数据分析,对HARQ系统的吞吐量分析,借鉴了主成分分析算法(PCA),连续相位调制信号(CPM)产生,包括随机梯度算法,相对梯度算法,三相光伏逆变并网的仿真。
插值与拟合,解方程,数据分析,对HARQ系统的吞吐量分析,借鉴了主成分分析算法(PCA),连续相位调制信号(CPM)产生,包括随机梯度算法,相对梯度算法,三相光伏逆变并网的仿真。
- 2022-04-21 21:03:15下载
- 积分:1
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acwmf.m
The proposed filter is able to suppress
high-density of salt-and-pepper noise, at the same time
preserving fine image details, edges and textures well.
- 2012-03-31 12:17:19下载
- 积分:1
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CP0201
本代码实现了PPM-TH-UWB系统发生器的matlab仿真。(This code implements the PPM-TH-UWB system generator matlab simulation.)
- 2011-05-09 09:37:27下载
- 积分:1
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ex10
wireless communication relay technologies in LTE-Advanced
- 2013-11-14 16:29:14下载
- 积分:1
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Ch3_2_DSB_SSB
双边带抑制载波的matlab仿真程序,文件为直接可用的源码,详细展示了双边带抑制载波全过程。(matlab code for DSB_SSB simulating)
- 2012-11-24 12:21:03下载
- 积分:1
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svrexample
这是一个支持向量机回归预测的代码,适合于初学者来体验svr的回归能力( U8FD9 u662F u4E00 u4E2A u652F u6301 u5411 u91CF u673A u56DE u5F52 u9884 u6D4B u7684 u4EE3 u7801 uFF0C u9002 u5408 u4E8E u521D u5B66 u8005 u6765 u4F53 U9A8Csvr u7684 u56DE u5F52 u80FD u529B)
- 2017-04-26 11:27:36下载
- 积分:1
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aaa
基于颜色的图像检索系统,带有两个图像数据库,采用分块图像检索方法。(Color-based image retrieval system, with two image databases, image retrieval method using block.)
- 2011-02-09 14:14:13下载
- 积分:1
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New
programs for matlab in electrical engendering
- 2011-05-20 19:21:44下载
- 积分:1