<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

Published Online: May 06, 2016

Page range: 62 - 67

Received: Nov 02, 2015

Accepted: Mar 23, 2016

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

Keywords
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

Published Online: May 06, 2016

Page range: 62 - 67

Received: Nov 02, 2015

Accepted: Mar 23, 2016

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

KeywordsCoriolis 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.

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