<abstract xmlns="http://www.w3.org/1999/xhtml"><p>According to the characteristics of stable single-phase flow, a phase difference measurement method based on the extended Kalman filter is proposed in this paper for use with Coriolis mass flowmeters. Firstly, the Mallat algorithm is applied to filter out interference signals. Then, the frequency and phase difference of the two reconstructed signals are detected through the extended Kalman filter. Compared with the sliding Goertzel algorithm or discrete time Fourier transform, the proposed method does not need to predict the signal frequency and avoids quadratic error. Simulations and experiments show that the proposed method has stronger anti-interference, higher measurement accuracy and lower relative error than the existing method based on the Hilbert transformation.</p></abstract>

According to the characteristics of stable single-phase flow, a phase difference measurement method based on the extended Kalman filter is proposed in this paper for use with Coriolis mass flowmeters. Firstly, the Mallat algorithm is applied to filter out interference signals. Then, the frequency and phase difference of the two reconstructed signals are detected through the extended Kalman filter. Compared with the sliding Goertzel algorithm or discrete time Fourier transform, the proposed method does not need to predict the signal frequency and avoids quadratic error. Simulations and experiments show that the proposed method has stronger anti-interference, higher measurement accuracy and lower relative error than the existing method based on the Hilbert transformation.

A Phase Difference Measurement Method Based on the Extended Kalman Filter for Coriolis Mass Flowmeters

School of Instrumentation and Optoelectronics Engineering

Measurement Science Review

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

According to the characteristics of stable single-phase flow, a phase difference measurement method based on the extended Kalman filter is proposed in this...

A Phase Difference Measurement Method Based on the Extended Kalman Filter for Coriolis Mass Flowmeters

Published Online: May 02, 2019

Page range: 48 - 52

Received: Aug 16, 2018

Accepted: Feb 07, 2019

DOI: https://doi.org/10.2478/msr-2019-0008

Keywords
Coriolis mass flowmeter, phase difference, extended Kalman filter, Mallat algorithm

© 2019 Nan Chen et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

A Phase Difference Measurement Method Based on the Extended Kalman Filter for Coriolis Mass Flowmeters

Published Online: May 02, 2019

Page range: 48 - 52

Received: Aug 16, 2018

Accepted: Feb 07, 2019

DOI: https://doi.org/10.2478/msr-2019-0008

KeywordsCoriolis mass flowmeter, phase difference, extended Kalman filter, Mallat algorithm

© 2019 Nan Chen et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Coriolis mass flowmeter, phase difference, extended Kalman filter, Mallat algorithm