基于滑模控制的虚拟NOx传感器建模与仿真  

Modeling and simulation of virtual NOx sensor based on sliding mode control

作　　者：冯雪丽[1] 

机构地区：[1]杭州科技职业技术学院,浙江杭州311402

出　　处：《机电工程》2015年第5期617-621,共5页Journal of Mechanical & Electrical Engineering

摘　　要：为解决降低汽车尾气排放的对大气有污染的NOx的含量,对NOx的含量进行检测以便转化控制等问题,将滑膜控制理论应用到虚拟NOx传感器的设计中,开展了滑模控制的基本原理分析,建立了滑模控制理论与虚拟NOx传感器设计之间的关系,提出用Matlab的Simulink模块来搭建所设计的虚拟NOx传感器的模型的方法,并进行仿真。最后将仿真结果与理想信号进行了比较试验。研究结果表明,该虚拟NOx传感器的显示信号和理想信号高度吻合,说明该虚拟NOx传感器在理论上是可行的。In order to solve the problems of reducing the content of Nox in theatmospheric NOx, the content of NOx was defecting, The slid-ing mode control theory was applied to the design of virtual NOx in sensor, After the analysis of the principle of sliding mode control, the relationship between the design of sliding mode control theory and virtual NOx sensor was established. A method was presented to build the virtual NOx sensor design by using Simulink＇s Matlab modulemodel, And it was simulated. The simulation result and the ideal signal were comparison tested, The experimental results show that the virtual NOx sensor signal and the ideal signal display high coincidence, which indicated that the virtual NOx sensor is practical in theory.

关 键 词：滑模控制 虚拟NOx传感器 仿真 

分 类 号：TH83[机械工程—仪器科学与技术] U467.48[机械工程—精密仪器及机械]