电子科技大学学报2012，Vol.41Issue(2)：253-258,6.DOI:10.3969/j.issn.1001-0548.2012.02.016
基于HHT的涡街流量计脉动流噪声去除方法研究
Denoising Method of Vortex Flowmeter Signal in Oscillatory Flow Based on Hilbert Huang Transformation
摘要
Abstract
In this paper, Hilbert Huang transform (HHT) method is used to reduce vortex flow meter signal noise in oscillatory flow. The empirical mode decomposition (EMD)-scales filtering is used to erase vortex flow signal noise in oscillatory flow, and then the denoising effect of EMD-scales filter is compared with that of wavelet threshold filter using vortex flow meter signal noise in oscillatory flow. The signal simulation test shows that both EMD-scales filtering and wavelet threshold filtering can achieve good results, however, the former is more convenient and completely adaptive.关键词
EMD尺度滤波/Hilbert-Huang变换/小波阈值滤波/脉动流/涡街信号Key words
empirical mode decomposition (EMD)-scales filtering/ Hilbert-Huang transform (HHT)/ oscillatory flow/ vortex flow signal/ wavelet threshold filtering分类
机械制造引用本文复制引用
彭杰纲,方敏..基于HHT的涡街流量计脉动流噪声去除方法研究[J].电子科技大学学报,2012,41(2):253-258,6.基金项目
国家自然科学基金(61074182) （61074182）
教育部博士点新教师基金(200806141058) （200806141058）
中央高校基本科研业务费专项资金(ZYGX2009J067) （ZYGX2009J067）
