涡街流量信号中管道振动噪声的分析与处理

上海大学学报(自然科学版) ›› 2009, Vol. 15 ›› Issue (5): 522-527.

涡街流量信号中管道振动噪声的分析与处理

上海大学机电工程与自动化学院,上海 200072

收稿日期:2008-07-01 出版日期:2009-10-30 发布日期:2009-10-30
通讯作者: 李斌(1955～)，男，教授，博士生导师，研究方向为检测技术与自动化装置. E-mail:sulibin@shu.edu.cn

Analysis and Processing of Pipeline Vibration Noise in Vortex Flow Signals

School of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200072, China

Received:2008-07-01 Online:2009-10-30 Published:2009-10-30

摘要/Abstract

摘要：

研究了获取管道振动噪声干扰特征的方法,介绍了基于加速度传感器的管道振动信号的采集.结合涡街流量信号和管道振动信号的频谱分析结果,指出了管道振动信号频率与涡街流量信号的主要干扰分量频率直接相关.研究表明,可通过获取管道振动加速度信号特征,来间接获得涡街流量信号中最主要噪声的频率特征.基于这一研究结论,以管道振动信号的特征信息为参考输入,验证了通过自适应滤波对涡街流量信号中振动噪声的滤波方法.

关键词: 涡街信号;管道振动噪声;加速度传感器;自适应滤波

Abstract:

A method of acquiring pipeline vibration noise is studied, and sampling of pipeline vibration signals using an acceleration sensor introduced. Based on frequency analysis of vortex signal and pipeline vibration signal, frequency of pipeline vibration signals is directly correlated with the frequency of main noise component. The frequency characteristics of main noise in vortex signal can be obtained indirectly by acquiring the pipeline vibration acceleration signal. Implementation of vortex signal filtering using a self-adaptation filter with the characteristics of pipeline vibration signal as input is verified.

Key words: vortex signal; pipeline vibration noise; acceleration sensor; self-adaptation filter

中图分类号:

TB 535

戴光瑜李斌宋磊. 涡街流量信号中管道振动噪声的分析与处理[J]. 上海大学学报(自然科学版), 2009, 15(5): 522-527.

DAI Guang-Yu, LI Bin, SONG Lei. Analysis and Processing of Pipeline Vibration Noise in Vortex Flow Signals[J]. Journal of Shanghai University（Natural Science Edition）, 2009, 15(5): 522-527.