1. School of Electrical and Automation Engineering, Hefei University of Technology, Hefei, Anhui 230009, China
2. Anhui Engineering Technology Research Center of Industrial Automation, Hefei, Anhui 230009, China
Abstract：Aiming at the problem that the all-digital driving technology flow tube is difficult to start vibration, five kinds of starting methods such as analog to digital start-up, random wave start-up, sine wave start-up, sweep frequency square wave start-up, and positive-negative step alternate start-up are reviewed. Aiming at the problem that the amplitude, frequency and phase of driving signal are difficult to adjust, the solution is proposed. For the implementation platform of all-digital drive technology, two solutions are summarized: a single-core all-digital drive based on DSP and a dual-core all-digital drive based on DSP+FPGA. Among them, the single-core all-digital driving based on DSP has low cost and is easy to promote, and the dual-core all-digital driving based on DSP+FPGA has higher precision.
［1］Anklin M, Drahm W, Rieder A. Coriolis mass flowmeters: Overview of the current state of the art and latest research ［J］. Flow Measurement & Instrumentation, 2006, 17(6): 317-323.
［2］梁平, 岳峥, 刘晨曦. 数字驱动技术在科氏质量流量计中的应用 ［J］. 自动化技术与应用, 2018, 37(1): 122-124.
Liang P, Yue Z, Liu C X. Application of Digital Drive Technology for Coriolis Mass Flowmeter ［J］. Techniques of Automation and Application, 2018, 37(1): 122-124.
［3］李苗, 徐科军, 朱永强, 等. 科氏质量流量计的3种驱动方法研究 ［J］. 计量学报, 2011, 32(1): 36-39.
Li M, Xu K J, Zhu Y Q, et al. Studies on three driving methods of Coriolis mass flowmeter ［J］. Acta Metrologica Sinica, 2011, 32(1): 36-39.
［4］Seeger M. Coriolis flow measurement in two phase flow ［J］. Computing & Control Engineering Journal, 2005, 16(3): 10-16.
［5］Basse N T. Coriolis flowmeter damping for two-phase flow due to decoupling ［J］. Flow Measurement & Instrumentation, 2016, 52.
［6］Kunze J W, Storm R, Wang T. Coriolis Mass Flow Measurement with Entrained Gas［C］//Sensors and Measuring Systems 2014,17 ITG/GMA Symposium. Nuremberg, Germany,2014.
［7］Charreton C, Béguin C, Ross A, et al. Two-phase damping for internal flow: Physical mechanism and effect of excitation parameters ［J］. Journal of Fluids & Structures, 2015, 56: 56-74.
［8］徐科军, 刘文, 乐静, 等. 一种基于FPGA的科氏质量流量计数字驱动系统:CN107167196A［P］. 2017.
［9］Liu R P, Fuent M J, Henry M P, et al. A neural network to correct mass flow errors caused by two-phase flow in a digital Coriolis mass flowmeter ［J］. Flow Measurement & Instrumentation, 2001, 12(1): 53-63.
［10］Hou Q L, Xu K J, Fang M, et al. Gas-liquid two-phase flow correction method for digital CMF ［J］. IEEE Transactions on Instrumentation and Measurement, 2014, 63(10): 2396-2404.
［11］陶波波, 侯其立, 石岩, 等. 科氏质量流量计测量含气液体流量的方法与实现 ［J］. 仪器仪表学报, 2014(8): 1796-1802.
Tao B B, Hou Q L, Shi Y, et al. Method and implementation of measuring the flow of liquid mixed with gas for Coriolis mass flowmeter ［J］. Chinese Journal of Scientific Instrument, 2014, 35(8): 1796-1802.
［11］马亚朋,石础,罗宇, 等. 科氏流量计气-液两相流的数值模拟［J］. 计量学报, 2018, 39(5): 663-667.
Ma Y P, Shi C, Luo Y, et al. Numerical Simulation of Gas-liquid Two-phase Flow in Coriolis Flowmeter［J］. Acta Metrologica Sinica, 2018, 39(5): 663-667.
［12］刘文, 徐科军, 方正余, 等. 用于振幅控制的科氏流量管模型的实验识别 ［J］. 电子测量与仪器学报, 2018, 32(6): 39-45.
Liu W, Xu K J, Fang Z Y, et al. Experimental Identification of a Coriolis Flow Tube Model for Amplitude Control ［J］. Journal of Electronic Measurement & Instrument, 2018, 32(6): 39-45.
［13］熊文军, 徐科军, 方敏, 等. 科氏流量计一次仪表与变送器匹配方法研究 ［J］. 电子测量与仪器学报, 2012, 26(6): 521-528.
Xiong W J, Xu K J, Fang M, et al. Study on matching method of primary meter and transmitter in Coriolis mass flowmeter ［J］. Journal of Electronic Measurement & Instrument, 2012, 26(6): 521-528.
［14］HIDEKISHIMADA. Coriolis flowmeter:USPatent 2010/0268484A1［P］. 2010.
［15］Henry M P, Zamora M E. Startup and operational techniques for a digital flowmeter: US 8483979 B2［P］. 2013.
［16］徐科军, 侯其立, 方敏, 等. 一种科氏质量流量计的数字驱动跟踪方法和系统:CN201110331814. X［P］. 2011.
［17］李京华, 黄熠彬. 一种基于全数字驱动方式的科氏质量流量计启振方法:CN107167195A［P］. 2017.
［18］李苗, 徐科军, 侯其立, 等. 数字科氏质量流量计正负阶跃交替激励启振方法 ［J］. 仪器仪表学报, 2010, 31(1): 172-177.
Li M, Xu K J, Hou Q L, et al. Startup method of digital Coriolis mass flowmeter using alternating exciting of positive-negative step signal ［J］. Chinese Journal of Scientific Instrument, 2010, 31(1): 172-177.
［19］李祥刚, 徐科军. 科氏质量流量管非线性幅值控制方法研究 ［J］. 电子测量与仪器学报, 2009, 23(6): 82-86.
Li X G, Xu K J. Research on non-linear amplitude control method of Coriolis mass flow-tube ［J］. Journal of Electronic Measurement & Instrument, 2009, 23(6): 82-86.
［20］李祥刚, 徐科军, 朱永强. 非线性幅值控制算法中2种PI控制器的比较 ［J］. 合肥工业大学学报(自然科学版), 2009, 32(11): 1665-1668+1690.
Li X G, Xu K J, Zhu Y Q. Comparison between two types of PI controllers in non-linear amplitude control algorithm ［J］. Journal of Hefei University of Techology, 2009, 32(11): 1665-1668+1690.
［21］陶波波, 徐科军, 侯其立, 等. 变传感器设定值的科氏质量流量管控制方法 ［J］. 仪器仪表学报, 2015, 36(3): 712-720.
Tao B B, Xu K J, Hou Q L, et al. Variable sensor-setting-value based control method for Coriolis Mass Flowtube flowmeter ［J］. Chinese Journal of Scientific Instrument, 2015, 36(3): 712-720.
［22］刘文, 徐科军, 乐静, 等. 科氏流量计幅值控制中两类关键参数的确定 ［J］. 电子测量与仪器学报, 2018, 32(10): 183-189.
Liu W, Xu K J, Yue J, et al. Determination of two types of key parameters in coriolis flowmeter amplitude control ［J］. Journal of Electronic Measurement & Instrument, 2018, 32(10): 183-189.
［23］张建国, 徐科军, 方正余, 等. 数字信号处理技术在科氏质量流量计中的应用 ［J］. 仪器仪表学报, 2017, 38(9): 2087-2102.
Zhang J G, Xu K J, Fang Z Y, et al. Applications of digital signal processing technology in Coriolis mass flowmeter ［J］. Chinese Journal of Scientific Instrument, 2017, 38(9): 2087-2102.
［24］徐科军, 倪伟. 一种科里奥利质量流量计的信号处理方法 ［J］. 计量学报, 2001, 22(4): 254-287.
Xu K J, Ni W. A new signal processing method for Coriolis mass flowmeter ［J］. Acta Metrologica Sinica, 2001, 22(4): 254-257.
［25］Jacobsen E, Lyons Ｒ. The sliding DFT ［J］. Signal Processing Magazine IEEE, 2003, 20(2): 74-80.
［26］刘翠, 徐科军, 侯其立, 等. 适用于频繁启停流量测量的科氏质量流量计信号处理方法 ［J］. 计量学报, 2014, 35(3): 242-247.
Liu C, Xu K J, Hou Q L, et al. Signal processing method for Coriolis mass flowmeters for frequent start-stop flow measurement ［J］. Acta Metrologica Sinica, 2014, 35(3); 242-247.
［27］张建国, 徐科军, 董帅, 等. 基于希尔伯特变换的科氏质量流量计信号处理方法研究与实现 ［J］. 计量学报, 2017, 38(3): 309-314.
Zhang J G, Xu K J, Dong S, et al. Study and Implementation of Signal Processing Method for Coriolis Mass Flowmeter Based on Hilbert Transform ［J］. Acta Metrologica Sinica, 2017, 38(3), 309-314.
［28］刘维来, 赵璐, 王克逸, 等. 基于希尔伯特变换的科氏流量计信号处理 ［J］. 计量学报, 2013, 34(5): 446-451.
Liu W L, Zhao L, Wang K Y, et al. Signal processing for Coriolis mass flowmeter based on Hilbert transform ［J］. Acta Metrologica Sinica, 2013, 34(5): 446-451.
［29］侯其立, 徐科军, 李叶, 等. 用于微弯型科氏质量流量计的数字变送器研制 ［J］. 电子测量与仪器学报, 2011, 25(6): 540-545.
Hou Q L, Xu K J, Li Y, et al. Development of digital transmitter for micro-bend type coriolis mass flowmeter ［J］. Journal of Electronic Measurement and Instrument, 2011, 25(6): 540-545.
［30］郑德智, 樊尚春, 邢维巍. 科氏质量流量计相位差检测新方法 ［J］. 仪器仪表学报, 2005,26(5): 441-443.
Zheng D Z, Fan S C, Xing W W. The novel method of phase difference detection in Coriolis Mass Flowmeter ［J］. Chinese Journal of Scientific Instrument, 2005, 26(5): 441-443.
［31］杨俊, 武奇生, 孙宏琦. 基于相关法的相位差检测方法在科氏质量流量计中的应用研究 ［J］. 传感器技术学报, 2007, 20(1): 138-145.
Yang J, Wu Q S, Sun H Q. Study on using correlation to detect phase difference in Coriolis Flowmeter ［J］. Chinese Journal of Sensors and Actuators, 2007, 20(1): 138-145.
［32］涂亚庆, 沈廷鳌, 李明, 等. 基于多次互相关的非整周期信号相位差测量算法 ［J］. 仪器仪表学报, 2014, 35(7): 1578-1585.
Tu Y Q, Shen T A, Li M, et al. Research on phase difference measurement algorithm for non-integer period sampling signal based on multi-layer correlation ［J］. Chinese Journal of Scientific Instrument, 2014, 35(7): 1578-1585.
［33］侯其立, 徐科军, 方敏, 等. 科氏质量流量计数字驱动方法研究与实现 ［J］. 计量学报, 2013, 34(6): 554-560.
Hou Q L, Xu K J, Fang M, et al. Study and implementation of digital drive method for Coriolis mass flow meter ［J］. Acta Metrologica Sinica, 2013, 34(6): 554-560.
［34］Zamora M, Henry M P. An FPGA Implementation of a Digital Coriolis Mass Flow Metering Drive System ［J］. IEEE Transactions on Industrial Electronics, 2008, 55(7): 2820-2831.
［35］Henry M P, Clarke D W, Archer N, et al. A self-validating digital Coriolis mass-flow meter: an overview ［J］. Control Engineering Practice, 2000, 8(5): 487-506.
［36］田婧, 樊尚春, 郑德智. 基于FPGA的科氏质量流量计数字闭环系统设计 ［J］. 仪表技术与传感器, 2009,(s1): 381-383.
Tian J, Fan S C, Zheng D Z. Design of Digital Closed Loop System of Coriolis Mass Flowmeter Based on FPGA ［J］. Instrument Technique & Sensor, 2009,(s1): 381-383.
［37］陈宝欣, 涂亚庆, 杨辉跃, 等. 科氏流量计数字驱动系统设计 ［J］. 后勤工程学院学报, 2016, 32(3): 86-91.
Chen B X, Tu Y Q, Yang H Y, et al. Method and Implementation of a Digital Coriolis Mass Flowmeter Drive System ［J］. Journal of Logistical Engineering University, 2016, 32(3): 86-91.
［38］Hou Q L, Xu K J, Fang M, et al. Development of Coriolis mass flowmeter with digital drive and signal processing technology ［J］. Isa Transactions, 2013, 52(5): 692.
［39］李苗. 科氏质量流量计数字驱动方法与两相流实验装置［D］. 合肥:合肥工业大学, 2011.
2020, Vol. 41 
