Abstract：In order to apply the Coriolis mass flowmeter with micro-bending and high frequency sensor to the urea machine, the signal model of the Coriolis mass flow sensors filling process is established according to the flow signal data collected in the field of the enterprise. Based on the above model, the error causes of the existing digital signal processing algorithms are analyzed, and the algorithm is improved from the perspective of dynamic response speed, so as to meet the needs of urea machine measurement. The real-time algorithm is realized on the Coriolis mass flow transmitter based on DSP, and the water flow calibration experiment and filling machine calibration are carried out. The measurement error is less than 0.1% and the repeatability error is less than 0.05%.
刘陈慈,徐科军,黄雅. 尿素机中高频微弯型科氏质量流量计信号处理[J]. 计量学报, 2022, 43(6): 766-775.
LIU Chen-ci,XU Ke-jun,HUANG Ya. Signal Processing of High Frequency Microbend Coriolis Mass Flowmeter for Urea Filling Machine. Acta Metrologica Sinica, 2022, 43(6): 766-775.
［1］Clark C, Cheesewright R, Wang S W, et al. A radically new dynamic response capability for Coriolis flow meters［J］. Sensors & Actuators: A. Physical, 2005, 123: 53-62.
［2］Clark C, Cheesewright R. Experimental determination of the dynamic response of Coriolis mass flow meters［J］. Flow Measurement and Instrumentation, 2005, 17(1): 39-47.
［3］Clark C, Cheesewright R, Wang S W. Prediction of the Dynamic Performance of Fast Response Coriolis Meter Systems［J］. IEEE Transactions on Instrumentation and Measurement, 2008, 57(1): 95-99.
［4］Tombs M, Henry M, Zhou F B, et al. High precision Coriolis mass flow measurement applied to small volume proving［J］. Flow Measurement and Instrumentation, 2006, 17(6): 371-382.
［5］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.
［6］涂亚庆, 张海涛, 李咏治. 液体定量灌装控制系统中的误差分析［C］//第五届全球智能控制与自动化大会. 2004: 3826-3829.
［7］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. A new phase difference detection method for Coriolis mass flowmeter ［J］. Chinese Journal of Scientific Instrument, 2005, 26(5): 441-443.
［8］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.
［9］侯其立, 徐科军, 李叶, 等. 基于TMS320F28335 的高精度科氏质量流量变送器研制［J］. 仪器仪表学报, 2010, 31(12): 2788-2795.
Hou Q L, Xu K J, Li Y, et al. Development of high-accuracy Corilis mass flow transmit-ter based onTMS320F28335 ［J］. Chinese Journal of Scientific Instrument, 2010, 31(12): 2788-2795.
［10］张海涛, 涂亚庆. 计及负频率影响的科里奥利质量流量计信号处理方法［J］. 仪器仪表学报, 2007, 28(3): 539-544.
Zhang H T, Tu Y Q. Signal processing method withnegative frequency contribution for coriolis mass flowme-ter ［J］. Chinese Journal of Scientific Instrument, 2007, 28 (3): 539-544.
［11］李叶, 徐科军, 朱志海, 等. 面向时变的科里奥利质量流量计信号的处理方法研究与实现［J］. 仪器仪表学报, 2010, 31(1): 8-14.
Li Y, Xu K J, Zhu Z H, et al. Study and implementation of processing method for time-varying signal of Coriolis mass flow-meter［J］. Chinese Journal of Scientific Instrument, 2010, 31(1): 8-14.
［12］Hank Zumbahlen. Operational Amplifer Application ［Z］. Analog Device, Inc., 2002: 5. 1-5. 132.
［13］张伦, 徐科军, 徐浩然, 等. 面向批料流测量的科氏质量流量计正交解调方法实现［J］. 计量学报, 2020, 41(7): 808-815.
Zhang L, Xu K J, Xu H R, et al. Realization of Quadrature Demodulation Method for Coriolis Mass Flowmeter under Batch Flow Measurement［J］. Acta Metrologica Sinica, 2020, 41(7): 808-815.
［14］朱永强, 徐科军, 李叶, 等. 基于DSP的数字式科里奥利质量流量变送器硬件设计 ［J］. 仪器仪表学报, 2009, 30(6): 348-353.
Zhu Y Q, Xu K J, Li Y, et al. Hardware design of digital coriolis mass flow transmitter based on DSP ［J］. Chinese Journal of Scientific Instrument, 2009, 30(6): 348-353.
［15］李苗, 徐科军. 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. Startup method of digital coriolis massflowmeter using alternative exciting of positive-negative step signal ［J］. Chinese Journal of Scientific Instrument, 2010, 31(1): 172-177.
［16］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.
2022, Vol. 43 
