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《Journal of Central South University(Science and Technology)》 2006-05
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Measurement system for gas flux in pipeline based on function chain neural network

E Jia-qiang~(1,2),ZHANG Hua-mei~1,GONG Jin-ke~1,WANG Yao-nan~2(1.School of Mechanical and Automotive Engineering,Hunan University,Changsha 410082,China;2.School of Electrical and Informational Engineering,Hunan University,Changsha 410082,China)  
Relative humidity modifying of gas in the pipeline was introduced into measurement system and a humidity sensor was used to transform the signals of relative humidity.Moreover,on-line measurement system can be obtained after a fitting formula about water vapour saturated pressure in the gas pipeline at different temperatures is established by using the function chain neural network,which can greatly simplify the software of measurement of gas flux in the pipeline and quickly and truly realize measurement of gas flux in the pipeline in real time and on line in the design range of flowmeter.The application results reveal that the measurement system can quickly measure the gas flux in the pipeline on line and its measurement error about gas flux in the pipeline is less than 0.7%.
【Fund】: 国家自然科学基金资助项目(60375001)
【CateGory Index】: TU996
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