数据采集与处理2013，Vol.28Issue(1)：22-27,6.
基于重叠短汉宁窗DTFT算法的科氏流量计信号处理方法
Signal Processing Method for Coriolis Mass Flowmeter Based on DTFT Algorithm with Overlap Hanning Windows
摘要
Abstract
A method for signal processing of Coriolis mass flowmeter(CMF) is proposed based on discrete time Fourier transform (DTFT) algorithm with overlap Hanning windows. Firstly, a new adaptive notch filter is applied to filter the sensor output signals of CMF and calculate the frequency. Then, the DTFT algorithm with overlap Hanning windows is introduced to calculate the real-time phase difference between two enhanced signals. With the obtained frequency and phase difference, the time interval between two signals is calculated and then the mass flow rate is derived ultimately. The simulation and field testing results show that the proposed method is efficient.关键词
科氏流量计/自适应陷波器/相位差/负频率Key words
Coriolis mass flowmeter/ adaptive notch filter/ phase difference/ negative frequency分类
机械制造引用本文复制引用
涂亚庆,沈廷鳌,张海涛..基于重叠短汉宁窗DTFT算法的科氏流量计信号处理方法[J].数据采集与处理,2013,28(1):22-27,6.基金项目
国家自然科学基金(60871098,61271449)资助项目 （60871098,61271449）
重庆市自然科学基金重点(CSTC,2011BA2015)资助项目. （CSTC,2011BA2015）
