Application of periodogram and Welch based spectral estimation to vortex frequency extraction

摘要：

To properly extract vortex frequencies and improve measurement accuracy of vortex flowmeters, the periodogram and Welch based spectral estimation approaches were applied to the analysis of the output signals from a vortex flowmeter under various flow rates, and the error characteristics of the two spectral estimation approaches and their performances in different kinds of window functions were discussed. The results indicate that the periodogram method is of high estimation accuracy and stable performance, which is more suitable for the vortex frequency extraction.

关键词： spectral estimation periodogram method Welch method vortex frequency vortex flowmeter

作者: Sun Zhiqiang Chen Hongchu Chen Yanping

作者单位: School of Energy Science and Engineering, Central South University, Changsha 410083, China

会议类型: 国际会议

会议名称: 2012 International Conference on Intelligent System Design and Engineering Applications(2012年智能系统设计与工程应用国际会议 ISDEA 2012)

会议地点: 三亚

会议语种:英文

页码: 1383-1386

在线出版日期: 2012-01-06（万方平台首次上网日期，不代表论文的发表时间）