计算机工程与应用2016，Vol.52Issue(3)：252-255,4.DOI:10.3778/j.issn.1002-8331.1503-0200
科氏流量计振动信号参数估计的最小二乘法
Parameters estimation of Coriolis flowmeter vibration signal based on least squares
摘要
Abstract
The parameters estimation of Coriolis flowmeter vibration signal is particularly important for vibration control and flow calculating. Considering the characteristics of Coriolis flowmeter signals, this paper introduces a parameters esti-mation method applied to Coriolis flowmeter signals. This method is built based on the theories of least squares and func-tion approximation. The FFT is used to roughly compute signal frequency, which is the foundation of frequency search range. It acquires signal amplitude of the cosine, sine amplitude and dc offset by the solution of least squares equation. The right frequency is searched out by making the minimum squared error. Parameters corresponding to the minimum squared error are the wished parameters. The accuracy and anti-noise performance of the proposed method are analyzed in simulation. Prior experiments focus on the analysis and parameters estimation of the Rosemount F200S Coriolis flowmeter signal wave. Accuracy and practicality of the proposed method are testified by the experiment results.关键词
振动信号/参数估计/最小二乘/科氏流量计Key words
vibration signals/parameter estimation/least squares/Coriolis flowmeter分类
机械制造引用本文复制引用
杨辉跃,涂亚庆,张海涛,陈宝欣..科氏流量计振动信号参数估计的最小二乘法[J].计算机工程与应用,2016,52(3):252-255,4.基金项目
国家自然科学基金(No.61271449,No.61302175) （No.61271449,No.61302175）
重庆市自然科学基金(No.CSTC2013jcyjA40030,No.CSTC2015jcyjBX0017) （No.CSTC2013jcyjA40030,No.CSTC2015jcyjBX0017）
重庆市首批百名学术学科人才专项资助(渝教人2012-44号). （渝教人2012-44号）
