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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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温度植被干旱指数计算
说明： 采用IDL语言，可以用来计算植被干旱指数，输入影像即可(Using IDL language, it can be used to calculate vegetation drought index, just input image)
- 2021-01-21 23:33:24下载
- 积分：1
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labview程序编程技巧演示，用labview编写windows应用板球小游戏小程序...
labview程序编程技巧演示，用labview编写windows应用板球小游戏小程序-LabVIEW programming skills demonstration, windows applications using LabVIEW to prepare a cricket game applet
- 2022-07-13 09:05:56下载
- 积分：1
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关于如何走出迷宫的C语言程序，首先从键盘输入…
关于如何走出迷宫的c语言程序，首先从键盘上输入迷宫进、出口位置，即可在屏幕上显示出口路线图。-on how out of the labyrinth c language program, the first from the keyboard input maze imports and exports position, can be displayed on the screen export the road map.
- 2022-03-28 16:51:24下载
- 积分：1
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cadtoansys
将autocad软件中的线和面导入到ansys模型中，进行建模和处理(transform line and area from autocad to ansys)
- 2020-08-31 19:58:11下载
- 积分：1
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247750_TSN3151-Lecture-03-v1
Parallel programing chapter 3
- 2019-02-13 20:34:30下载
- 积分：1
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宇宙无敌终极之版本！！！！！！！！
说明： 大一的一个实训作业，实现4s汽车录入和信息管理(A practical training assignment in freshman year to realize 4S automobile input and information management)
- 2020-06-17 12:00:01下载
- 积分：1
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java数据库驱动 对于数据库连接有作用
java数据库驱动 对于数据库连接有作用-java
- 2022-03-02 15:22:24下载
- 积分：1
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3D立方体翻转插件
一款jQuery 3D立方体翻转插件。该插件可以创建水平或垂直的3d立方体效果，(A jQuery 3D cube flip plug-in. The plug-in can create horizontal or vertical 3D cube effects.)
- 2019-01-09 16:04:42下载
- 积分：1
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无线传感网络MAC层代码，适用树状的网络拓扑图以及信息收集...
无线传感网络MAC层代码，适用树状的网络拓扑图以及信息收集-wireless sensor networks MAC layer code, the applicable tree network topology map and information collection
- 2022-03-22 23:14:34下载
- 积分：1
