Variable sensor-setting-value based control method for Coriolis Mass flowtube flowmeter

被引：0

作者：

Tao, Bobo ^{[1
]}

Xu, Kejun ^{[1
,2
]}

Hou, Qili ^{[1
]}

Shi, Yan ^{[1
]}

Dong, Shuai ^{[1
]}

机构：

[1] School of Electrical and Automation Engineering, Hefei University of Technology, Hefei,230009, China

[2] Engineering Technology Research Center of Industrial Automation, Anhui Province, Hefei,230009, China

来源：

Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument | 2015年 / 36卷 / 03期

关键词：

Vibration analysis - Flow measurement - Flowmeters - Liquefied gases;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Stable vibration of flowtube is the premise of accurate measurement for Coriolis mass flowmeter. Optimal vibration amplitude of flowtube cannot be maintained when two-phase flow occurs, which leads to a large fluctuation of the sensor output signal. Aiming at the problem of flowtube amplitude control, the factors affecting its vibration amplitude and stability are analyzed. And variable sensor-setting-value control method is proposed to track the sensor amplitude variation. The method is realized on the developed digital Coriolis mass flow transmitter in real-time. The comparative experiments of two kinds of setting-value methods are performed in a liquid-gas two-phase flow rig. The experimental results show that the variable sensor-setting-value method has a better performance both in signal tracking and amplitude controlling under the situations of different gas volume fractions and control responses. The flowtube can be maintained relatively stable vibration, and the fluctuation range of the sensor signal amplitude is small, which reduces the volatility significantly in the process of two-phase flow measurement. ©, 2015, Science Press. All right reserved.

引用

页码：712 / 720