基于CFD和时间序列的计量活门阀芯压力预测模型  

Pressure Prediction Model of Metering Valve Core Based on CFD and Time Series

作　　者：钟强 何勇[1] 姚凯学[1] 张庆铭 胡加德 ZHONG Qiang;HE Yong;YAO Kaixue;ZHANG Qingming;HU Jiade(School of Computer Science and Technology,Guizhou University,Guiyang Guizhou 550025,China;School of Data Science and Information Engineering,Guizhou Minzu University,Guiyang Guizhou 550025,China;Guizhou Kehai New Technology Development Co.,Ltd.,Guiyang Guizhou 550000,China)

机构地区：[1]贵州大学计算机科学与技术学院,贵州贵阳550025 [2]贵州民族大学数据科学与信息工程学院,贵州贵阳550025 [3]贵州科海新技术发展有限公司,贵州贵阳550000

出　　处：《机床与液压》2021年第24期46-51,共6页Machine Tool & Hydraulics

基　　金：贵州省科技计划项目(黔科合成果[2018]4002)。

摘　　要：为描述某活门阀芯处的压力,提出使用CFD技术并结合时间序列分析方法对阀芯处的压力进行建模。对燃油计量系统进行流场仿真,在阀芯处设置monitor以获取压力值;对获取的压力值采用时间序列方法进行分析,建立该序列的ARMA-ARCH模型。使用该模型进行预测并与原始序列对比,结果表明该模型拟合较好。In order to describe the pressure at the valve core of a valve,the CFD technology and time series analysis method were used to model the pressure at the valve core.The flow field simulation of the fuel metering system was carried out,and monitor was set at the valve core to obtain the pressure value;the ARMA-ARCH model of the obtained pressure was established by using the time se⁃ries method.The model was used to predict and compared with the original sequence.The results show that the model fits well.

关 键 词：阀芯压力预测模型 CFD技术 时间序列分析 ARCH效应 计量活门 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]