Weighting function-based coil size optimization for electromagnetic flowmeter

Author

Xu, Lijun ; Peng, Zhicong ; Cao, Zhang ; Ling, Qi ; Wang, Gang

Author_Institution

Sch. of Instrum. Sci. & Opto-Electron. Eng., Beihang Univ., Beijing, China

fYear

2011

fDate

10-12 May 2011

Firstpage

1

Lastpage

6

Abstract

The paper presented a method to optimize the excitation coils in the electromagnetic flowmeters (EMFs). The optimized coil size was obtained by minimizing the standard deviation of the induced voltage for different asymmetrical flow profiles. The voltage detected between the two electrodes was calculated based on the weight function. A pair of parameters, i.e. circular span angle and axial length, was selected as the optimized parameters of the excitation coils. The optimization was then implemented with different values of the parameter pairs. As a result, the parameter pair that leads to the minimum deviation of the induced voltage for different asymmetrical flow profiles was selected for the optimized coil. The model of EMF with diameter of 150mm was established. The results showed that the EMF composed of the optimized coils was less sensitive to the flow profiles than the EMF composed of the un-optimized ones.

Keywords

coils; electromagnets; flowmeters; search problems; asymmetrical flow profile; axial length; circular span angle; coil size optimization; electromagnetic flowmeter; excitation coils; induced voltage; size 150 mm; standard deviation; weighting function; Coils; Electrodes; Electromagnetics; Equations; Magnetic fields; Mathematical model; Optimization; electromagnetic flowmeter; excitation coils; flow profile; induced voltage deviation; weight function;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference (I2MTC), 2011 IEEE

Conference_Location

Binjiang

ISSN

1091-5281

Print_ISBN

978-1-4244-7933-7

Type

conf

DOI

10.1109/IMTC.2011.5944233

Filename

5944233