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应用模糊熵和相似度的管道泄漏检测与定位

刘炜 刘宏昭

刘炜, 刘宏昭. 应用模糊熵和相似度的管道泄漏检测与定位[J]. 机械科学与技术, 2016, 35(3): 437-443. doi: 10.13433/j.cnki.1003-8728.2016.0320
引用本文: 刘炜, 刘宏昭. 应用模糊熵和相似度的管道泄漏检测与定位[J]. 机械科学与技术, 2016, 35(3): 437-443. doi: 10.13433/j.cnki.1003-8728.2016.0320
Liu Wei, Liu Hongzhao. Applying Fuzzy Entropy and Similarity Dgree to Detecting and Locating Pipeline Leakage[J]. Mechanical Science and Technology for Aerospace Engineering, 2016, 35(3): 437-443. doi: 10.13433/j.cnki.1003-8728.2016.0320
Citation: Liu Wei, Liu Hongzhao. Applying Fuzzy Entropy and Similarity Dgree to Detecting and Locating Pipeline Leakage[J]. Mechanical Science and Technology for Aerospace Engineering, 2016, 35(3): 437-443. doi: 10.13433/j.cnki.1003-8728.2016.0320

应用模糊熵和相似度的管道泄漏检测与定位

doi: 10.13433/j.cnki.1003-8728.2016.0320
基金项目: 

国家自然科学基金项目(51275404)资助

详细信息
    作者简介:

    刘炜(1976-),讲师,博士研究生,研究方向为计算机应用和仪器检测技术,yoyotianxia@163.com

    通讯作者:

    刘宏昭,教授,博士,liu-hongzhao@163.com

Applying Fuzzy Entropy and Similarity Dgree to Detecting and Locating Pipeline Leakage

  • 摘要: 动态压力波信号的异常识别是声波法输油管道泄漏检测和泄漏定位的关键。从时间序列角度出发,提出一种基于模糊集理论的输油管道泄漏检测定位方法。该方法首先采用小波分解和半硬软阈值法去除动态压力波信号噪声;其次选取固定长度的正常动态压力波信号子序列作为模板序列,并对现场采集所得动态压力波信号选取相同长度的子序列作为被匹配序列,构造两子序列信号所对应功率谱的模糊集并计算其相似度;最后根据模糊相似度判定输油管道是否存在泄漏现象,若发生泄漏,可利用检测信号和模板信号的模糊熵差确定泄漏位置。实验表明,建议方法简单、有效且定位精度高。
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出版历程
  • 收稿日期:  2015-08-10
  • 刊出日期:  2016-03-05

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