辽宁工程技术大学学报（自然科学版）2017，Vol.36Issue(5)：484-487,4.DOI:10.11956/j.issn.1008-0562.2017.05.006
基于遗忘加权的变步长自适应管网泄漏定位方法
Pipeline leak detection method based on variable step size LMS adaptive filter with forgetting weight
摘要
Abstract
Acoustic signal of leakage will be generated when water pipes leak.A three sensor-based leak detection and location model is proposed,which solves the problem of sound velocity dependent on experience.Improvements on variable step size LMS adaptive filtering algorithm have been made,and the sum of historical errors with forgetting weight are introduced in the iteration process of the step size factor to compensate it,and a sliding window is added in the same time to improve the convergence speed while reducing homeostasis.Experimental results show that the method can achieve accurate delay estimation,improve convergence speed with small steady state offset and improve the performance pipeline leak positioning.关键词
供水管网/泄漏/定位/时延估计/自适应/变步长/遗忘加权Key words
water-pipeline/leakage/positioning/TDE/Adaptive/variable step size/forgetting weight分类
信息技术与安全科学引用本文复制引用
陈建宇..基于遗忘加权的变步长自适应管网泄漏定位方法[J].辽宁工程技术大学学报（自然科学版）,2017,36(5):484-487,4.基金项目
国家自然科学基金项目(70971059) （70971059）
