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A Novel Phase Difference Measurement Method for Coriolis Mass Flowmeter Based on Correlation Theory

Author

Listed:
  • Ting’ao Shen

    (Army Logistics Academy of PLA, Chongqing 401311, China)

  • Siyu Huang

    (Army Logistics Academy of PLA, Chongqing 401311, China)

  • Peng Chen

    (China Aerodynamics Research and Development Center, Mianyang 621000, China)

  • Liwei Chen

    (Sichuan Taili Engineering Project Management Co., Ltd., Chengdu 610023, China)

  • Yi Zhou

    (Army Logistics Academy of PLA, Chongqing 401311, China)

Abstract

Aiming at the poor precision problem in phase difference measurements with unknown frequencies in engineering practice, a new phase difference measurement method is proposed for Coriolis mass flowmeter based on correlation theories. Firstly, the signal frequency was estimated by using an adaptive notch filter, which was applied to filter the waves and determined the integer period of the sampling signals, and the non-integer period sampling signals needed to be extended. Then, the Hilbert transformation was conducted relative to the extended signals, and the correlation functions of these extended signals with the transformed signals can be computed. Finally, the formula of phase difference can be obtained by utilizing the sinusoidal function. Compared to traditional methods, such as the correlation method, the Hilbert transformation method, and sliding Goertzel algorithm, the proposed method is suitable for both integer period and non-integer period sampling signals, and its accuracy, real-time, and dynamic performance is superior. Simulation and experiment results validate the superiority and effectiveness of the proposed method.

Suggested Citation

  • Ting’ao Shen & Siyu Huang & Peng Chen & Liwei Chen & Yi Zhou, 2022. "A Novel Phase Difference Measurement Method for Coriolis Mass Flowmeter Based on Correlation Theory," Energies, MDPI, vol. 15(10), pages 1-11, May.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:10:p:3710-:d:818765
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    Cited by:

    1. Guojun Yu & Huihao Liu & Huijin Xu, 2023. "New Advancements in Heat and Mass Transfer: Fundamentals and Applications," Energies, MDPI, vol. 16(7), pages 1-4, March.

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