时变信号相位差估计的相频匹配方法

沈艳林; 姬海君; 李治源; 陈鹏

doi:10.13873/j.1000-9787(2019)12-0054-04

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时变信号相位差估计的相频匹配方法

研究与探讨 | 更新时间：2025-09-11

- 时变信号相位差估计的相频匹配方法
- Phase and frequency matching method based on phase difference estimation for time-varying signals
- 传感器与微系统 2019年第12期页码：54-57
- 作者机构：
  
  1. 武警后勤学院
  2. 陆军勤务学院
- 作者简介：
- 基金信息：
  
  天津市自然科学基金资助项目(18JCQNJC01400);国家自然科学基金资助项目(61871402,61601493);国家重点研发计划资助项目(2018YFB2003900)
- DOI：10.13873/j.1000-9787(2019)12-0054-04
  中图分类号： TN911.23
- 纸质出版：2019
- 稿件说明：
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沈艳林, 姬海君, 李治源, 等. 时变信号相位差估计的相频匹配方法[J]. 传感器与微系统, 2019,(12):54-57.

SHEN Yanlin, JI Haijun, LI Zhiyuan, et al. Phase and frequency matching method based on phase difference estimation for time-varying signals[J]. 2019, (12): 54-57.
沈艳林, 姬海君, 李治源, 等. 时变信号相位差估计的相频匹配方法[J]. 传感器与微系统, 2019,(12):54-57. DOI： 10.13873/j.1000-9787(2019)12-0054-04.

SHEN Yanlin, JI Haijun, LI Zhiyuan, et al. Phase and frequency matching method based on phase difference estimation for time-varying signals[J]. 2019, (12): 54-57. DOI： 10.13873/j.1000-9787(2019)12-0054-04.

摘要

为提高科氏流量计信号的相位差估计精度

提出一种时变信号相位差估计的相频匹配方法。该方法通过时变信号与参考信号的频率匹配、时变信号的相移信号与其正交分量的相位匹配、参考信号与时变信号及其相移信号的互相关获得时变信号的相位差估计值。计算验证结果表明:该方法准确实现了时变信号的90°相移

有效提高了时变信号的相位差估计精度。科氏流量计流量检测实验证实了所提方法的有效性和优越性。

Abstract

To improve precision of phase difference estimation for Coriolis mass flowmeter（CMF） signals

a phase and frequency matching method based on phase difference estimation for time-varying signals is proposed.The estimated phase difference is obtained by means of frequency matching between time-varying signals and reference signals

phase matching between phase-shift signals of time-varying signals and their quadrature component

cross cross-correlation among reference signals

time-varying signals and its quadrature component. The results of calculation verification demonstrate that the proposed method completes 90° phase shift of time-varying signals exactly and improves estimation precision of phase difference for time-varying signals effectively.Measurement experimental results of CMF validate the effectiveness and superior of the proposed method.

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