氮氧化物分析仪转化效率建模与参数估计  

Modeling and Parameter Estimation of NOx Analyzer Conversion Efficiency

作　　者：詹彬彬 万蕾 刘海 ZHAN Bin-bin;WAN Lei;LIU Hai(School of Computer and Information,Anqing Normal University,Anqing 246133,China;Anqing Metrology and Testing Institute,Anqing 246002,China;Anqing Vocational and Technical College,Anqing 246003,China;East China Survey and Design Institute of State Forestry and Grassland Administration,Hangzhou 310019,China)

机构地区：[1]安庆师范大学计算机与信息学院,安徽安庆246133 [2]安庆市计量测试所,安徽安庆246002 [3]安庆职业技术学院机电工程系,安徽安庆246003 [4]国家林业和草原局华东调查规划设计院,浙江杭州310019

出　　处：《软件导刊》2020年第10期125-128,共4页Software Guide

基　　金：国家自然科学基金项目(11475003,61603003,11471093);教育部科技发展中心“云数融合科教创新”基金项目(2017A09116);安徽省高校优秀拔尖人才培育资助项目(gxbjZD26)。

摘　　要：为了解决氮氧化物分析仪转化炉转换效率估算问题,对现有氮氧化物转化效率计算模型进行定量分析。通过实验采集氮氧化物分析仪的历史检测数据,提出计算转化效率的动态修正模型,针对模型中的相关参数进行估计,并对两种模型的拟合优度加以比较。研究结果表明,相比于现有氮氧化物分析仪固有的计算模型,动态修正模型的残差平方和平均降低89.24%,多重可决系数接近1的程度平均增长88.64%,因而可以使分析仪对机动车尾气中的氮氧化物浓度检测更加准确可靠。In order to solve the problem of estimating the conversion efficiency of the conversion furnace of the nitrogen oxide analyzer,the existing calculation model of the conversion efficiency of nitrogen oxide is quantitatively analyzed.Based on the experimental data collected from the nitrogen oxide analyzer,a dynamic correction model for calculating the conversion efficiency is proposed,and the relevant parameters in the model are estimated,and the goodness of fit of the two models is compared.The research results show that compared with the inherent calculation model of the existing nitrogen oxide analyzer,the average squared residual error of the dynamic correction model is reduced by 89.24%,and the degree of multiple determination coefficient close to 1 is increased by 88.64%,which can make the analyzer more accurate and reliable for detecting the nitrogen oxide concentration in the exhaust of a motor vehicle.

关 键 词：氮氧化物分析仪 二氧化氮转化效率 机动车尾气检测 参数估计 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论]