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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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一种有效的哈希算法。。一种有效的哈希算法
一种有效的哈希算法。。一种有效的哈希算法-a kind of effective hashing algorithm
- 2022-03-03 04:59:30下载
- 积分：1
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三相全桥整流电路模型
说明： 基于simulink的三相桥式整流电路模型的搭建(Three phase bridge rectifier circuit)
- 2020-04-27 14:37:54下载
- 积分：1
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forever by less than a button
一个永远按不到的按钮-forever by less than a button
- 2022-02-22 04:50:07下载
- 积分：1
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网络蜘蛛源码发展套件，有源代码和测试例子，用java实现的
网络蜘蛛源码发展套件，有源代码和测试例子，用java实现的-network spider-source development kit, the active code and test case, with the realization of java
- 2023-05-04 20:35:03下载
- 积分：1
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识别以及光斑检测
说明： 利用MATLAB对光学图像识别相关器进行仿真以及MATLAB在光斑测量中的应用(The simulation of optical image recognition correlator and the application of MATLAB in spot measurement)
- 2020-08-09 20:08:30下载
- 积分：1
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Introduction_to_Algorithms
说明： introduction to algorithms data
- 2020-01-26 03:47:49下载
- 积分：1
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CEEMD-样本熵
说明： 用ceemd分解信号IMF分量，用峭度相关原则筛选噪声，用样本熵进行特征提取(18/5000
CEEMD was used to decompose the signal and sample entropy was used to extract the feature)
- 2021-04-09 09:04:54下载
- 积分：1
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Differential_attacks_analysis
计算图像处理中的评价指标NPCR和UACI，这两个指标用于表示图像的抗差分攻击能力。(The evaluation indexes NPCR and UACI in image processing are calculated.)
- 2019-04-30 15:01:11下载
- 积分：1
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RPG elements of a typing game developed by Delphi small game can be extended ind...
有RPG要素的打字游戏
由DELPHI开发的小游戏
通关后可挑战无限城-RPG elements of a typing game developed by Delphi small game can be extended indefinitely City challenge
- 2022-03-16 14:58:04下载
- 积分：1
