基于PAWN法的科里奥利质量流量计仪表系数灵敏度分析  

Sensitivity Analysis of Flow Calibration Factor of Coriolis Mass Flow Meter Based on PAWN Method

作　　者：刘牧原 陈龙淼[1] 刘太素 LIU Muyuan;CHEN Longmiao;LIU Taosu(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210014,China;Ray(Nanjing)Measurement and Control Technology Co.,Ltd.,Nanjing 211806,China)

机构地区：[1]南京理工大学机械工程学院,南京210014 [2]埃柯瑞(南京)测控技术有限公司,南京211806

出　　处：《自动化与仪器仪表》2025年第1期11-15,共5页Automation & Instrumentation

摘　　要：为探究科里奥利质量流量计设计参数对仪表系数的影响规律,识别重要参数指导设计开发,对一款U形科里奥利质量流量计振动管相关的12个设计参数进行了全局灵敏度分析。首先建立科里奥利质量流量计振动管的流固耦合模型,并通过试验验证了该模型的准确性,然后采用拉丁超立方采样(LHS)抽取参数样本并仿真分析得到相应仪表系数,基于这些样本训练BP神经网络得到设计参数与仪表系数的数学代理模型,最后使用基于分布函数的PAWN法分析参数的全局灵敏度。结果表明:振动管的高度、宽度、折弯半径及接收电磁铁位置4个参数对仪表系数的影响较为显著。This paper implements a global sensitivity analysis on 12 design parameters of the vibration tube of a U-shaped Coriolis mass flowmeter(CMF)to study the relationship of these design parameters and the flow calibration factor(FCF),in order to identify critical parameters to guide future design and development.First,a fluid solid interaction model of the CMF was established and verified,and the input samples are generated by Latin Hypercube Sampling(LHS),then corresponding FCF is simulated and calculated.Second,a BP neural network is trained based on these samples to obtain the mathematical surrogate model of the design parameters and FCF.Finally,the model is evaluated by a Cumulative Density Function(CDF)based Global Sensitivity Analysis(GSA)method called PAWN.The result indicates that height,width,bending radius of the vibrating tube and the position of the pickoff electromagnet have a significant impact on FCF.

关 键 词：科里奥利质量流量计 流固耦合 PAWN法 全局灵敏度分析 

分 类 号：TH814.6[机械工程—仪器科学与技术]