|本期目录/Table of Contents|

[1]庞兵,张震,梁原华. 用于电磁流量计信号调理的数模混合最优滤波方法[J].电机与控制学报,2015,19(01):102-106.[doi:10. 15938/j. emc.2015.01.015]
 PANG BindZHANG ZhenLIANG Yuan-hua. An optimal mixed-signal filtering method for signalconditioning of electromagnetic flowmeter[J].,2015,19(01):102-106.[doi:10. 15938/j. emc.2015.01.015]
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
19
期数:
2015年01
页码:
102-106
栏目:
出版日期:
2015-01-15

文章信息/Info

Title:
 An optimal mixed-signal filtering method for signal
conditioning of electromagnetic flowmeter
作者:
 庞兵张震梁原华
 哈尔滨理工大学 测控技术与通信工程学院,黑龙江哈尔滨150080
Author(s):
 PANG BindZHANG ZhenLIANG Yuan-hua
 College of measure-control technology and communication engineering, Harbin University of Science and Technology,Harbin 150080,China
关键词:
 电磁流量计信号调理数模混合最优滤波信噪比噪声特性
Keywords:
 Keywords:electromagnetic flowmetersignal conditioningoptimal mixed-signal filter signal-noise rationoise characteristics
分类号:
TH 814
DOI:
10. 15938/j. emc.2015.01.015
文献标志码:
A
摘要:
 摘要:针对采用低频矩形波励磁的电磁流量计感应信号、干扰和噪声信号的特性,提出了基于数
模混合最优滤波方法的信号调理方案。对数模混合最优滤波方法的原理和消除、抑制干扰和噪声
的机制进行了理论分析,分析了该方法的原理误差及补偿方法,在此基拙上设计了电磁流量计。理
论分析和检定实验表明数模混合最优滤波法是一种有效消除微分噪声的方法,它既能除去电磁流
量计的微分噪声,又能有效降低其他各类噪声干扰,从而获得更高信噪比的流量信号。
Abstract:
 Abstract:According to the characteristics of inductive signal,interference and noise from electromagnetic
flowmeter excited with low frequency square waveform,an optimal mixed一signal filtering method was pro-
posed. The principle of optimal mixed-signal filtering method and its mechanism on the way to eliminate
or suppress interference and noise were analyzed theoretically. The principle deviation and its compensa-
tion of this method were also analyzed .An electromagnetic flowmeter was designed to apply this method.
Theoretical analysis and the result of verification experiment both show that the optimal mixed-signal filte-
ring method is an effective method to eliminate differential noise. In electromagnetic flowmeter, not only
the differential noise is removed,but other kinds of interference and noise are also suppressed effectively.
This makes the output signal with higher signal-noise ratio.

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备注/Memo

备注/Memo:
更新日期/Last Update: 2015-07-21