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| Analog Drive Design of Coriolis Flowmeter Based on Driving Characteristic Diagram Method |
| XU Hao-ran1,XU Ke-jun1,2,ZHANG Lun1,LIU Wen1,YUE Jing1,HUANG Ya1,LIU Chen-ci1 |
1. School of Electrical and Automation Engineering, Hefei University of Technology, Hefei, Anhui 230009, China
2. Engineering Technology Research Center of Industrial Automation, Hefei, Anhui 230009, China |
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Abstract The steady vibration of the sensor is a prerequisite for the operation of the Coriolis mass flowmeter. When the measured liquid flow contains gas, the vibration damping of the sensor increases, and the required driving energy should be increased. However, existing analog drivers are unable to provide the required energy in time, causing the sensor to stop vibrating. To this end, the drive characteristic curve of the existing analog drive was drawn, and the existing problems were analyzed. Then the drive characteristic curve of the new analog drive was derived, and a new analog drive circuit capable of working simultaneously under single-phase flow and gas-liquid two-phase flow was designed. Under the continuous gas-liquid two-phase flow and single-phase flow-gas-liquid two-phase flow switching, the existing analog drive and the new analog drive comparison experiment were carried out. The results showed that the driving stability and fastness of the new analog drive are better than the existing analog drive.
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Received: 18 January 2019
Published: 13 August 2020
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2020, Vol. 41 
