<abstract xmlns="http://www.w3.org/1999/xhtml"><p> Signal processing precision of Coriolis mass flowmeters affects the measurement accuracy directly. To improve the measurement accuracy of Coriolis mass flowmeters, a phase and frequency matching-based signal processing method for Coriolis mass flowmeters is proposed. Estimated phase difference is obtained by means of frequency estimation, 90° phase shift, generating reference signals and cross-correlation. Simulated results demonstrate that the proposed method has better phase difference estimation and anti-interference performance than the Hilbert transform method, cross-correlation method, data extension-based correlation method, and quadrature delay estimator. Measurement results of Coriolis mass flowmeters verify the effectiveness and superiority of the proposed method in practice.</p></abstract>

Signal processing precision of Coriolis mass flowmeters affects the measurement accuracy directly. To improve the measurement accuracy of Coriolis mass flowmeters, a phase and frequency matching-based signal processing method for Coriolis mass flowmeters is proposed. Estimated phase difference is obtained by means of frequency estimation, 90° phase shift, generating reference signals and cross-correlation. Simulated results demonstrate that the proposed method has better phase difference estimation and anti-interference performance than the Hilbert transform method, cross-correlation method, data extension-based correlation method, and quadrature delay estimator. Measurement results of Coriolis mass flowmeters verify the effectiveness and superiority of the proposed method in practice.

Phase and Frequency Matching-based Signal Processing Method for Coriolis Mass Flowmeters

Department of Information Engineering, Logistical Engineering University, Chongqing 401311, People’s Republic of China

Measurement Science Review

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Signal processing precision of Coriolis mass flowmeters affects the measurement accuracy directly. To improve the measurement accuracy of Coriolis mass...

Phase and Frequency Matching-based Signal Processing Method for Coriolis Mass Flowmeters

Publié en ligne: 06 mai 2016

Pages: 62 - 67

Reçu: 02 nov. 2015

Accepté: 23 mars 2016

DOI: https://doi.org/10.1515/msr-2016-0009

Mots clés
Coriolis mass flowmeters, phase and frequency matching, phase difference, frequency estimation, 90° phase shift

© by Yaqing Tu

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Phase and Frequency Matching-based Signal Processing Method for Coriolis Mass Flowmeters

Publié en ligne: 06 mai 2016

Pages: 62 - 67

Reçu: 02 nov. 2015

Accepté: 23 mars 2016

DOI: https://doi.org/10.1515/msr-2016-0009

Mots clésCoriolis mass flowmeters, phase and frequency matching, phase difference, frequency estimation, 90° phase shift

© by Yaqing Tu

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Mots clés
Coriolis mass flowmeters, phase and frequency matching, phase difference, frequency estimation, 90° phase shift