Experimental Study and Implementation of a Novel Digital Closed-Loop Control System for Coriolis Mass Flowmeter

被引：6

作者：

Hu, Chun ^{[1
]}

Zheng, Dezhi

Fan, Shangchun

机构：

[1] Beihang Univ, Sci & Technol Inertial Lab, Beijing 100191, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2013年 / 13卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Coriolis mass flowmeter; digital close-loop system; multiplying digital to analog converter; pre-tuned parameter PI controller; FLOW METER;

D O I：

10.1109/JSEN.2013.2260859

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：

Closed-loop control system undertakes the foundational task of maintaining the permanent vibration of the measuring tube for Coriolis Mass Flowmeter (CMF). In order to overcome the disadvantages of bad anti-jamming, slow response speed and high zero drift existing in conventional analog closed-loop system, a novel digital closed-loop control system is proposed in which the Multiplying Digital to Analog Converter is introduced to track the vibration signal of CMF in real time, together with the non-linear amplitude control method to vary the amplitude gain of the excitation signal, so that the measuring tube can be adjusted to vibrate with stable amplitude promptly. The real flow calibration experimental result shows that the maximum steady state relative error and repeatability are 0.147% and 0.039%, respectively. In addition, the start-up time of measuring tube can reach to 2.75 s.

引用

页码：3032 / 3038

页数：7