Flow Measurement using Kalman Filter for Smoothing Vortex Shedding Frequency

被引：0

作者：

Akresh, M. ^{[1
]}

Walker, W. D. ^{[1
]}

Reindl, L. ^{[1
]}

机构：

[1] Univ Freiburg, Inst Microsyst Technol IMTEK, Freiburg, Germany

来源：

2010 IEEE INTERNATIONAL INSTRUMENTATION AND MEASUREMENT TECHNOLOGY CONFERENCE I2MTC 2010, PROCEEDINGS | 2010年

关键词：

component; vortex flow meter; zero-cross method; Kalman filter;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A vortex signal is usually superimposed with noise, such as plant noise and measurement noise. Therefore it is proposed to estimate the vortex shedding frequency with a recursive filter, considering the plant and measurement noises. In this paper, a digital algorithm is implemented in a micro-controller to determine the vortex shedding frequency of a vortex flow meter in a turbulence flow range. The first step of the presented algorithm is to estimate the preprocessed vortex shedding frequency using a zero-crossing technique. After the estimation, the vortex shedding signal is smoothed with a Kalman filter. The test results show that this algorithm is able to compute values of the flow rate accurately in a turbulence range.

引用

页数：4

共 7 条

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[4]

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[5]

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[6]

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[7]

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