基于Simulink的SCR载体温度计算模型开发
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摘要
为开发控制用SCR计算模型,采用Simulink软件建立了SCR载体温度的求解模型,其中包括气体温度求解、载体温度求解,对温度上升过程、温度下降过程的Simulink计算值与试验值对比结果表明,该模型在温度上升过程中,载体温度计算值与试验值吻合较好,误差约10℃;在温度下降过程中,载体温度计算值与试验值误差稍大,但仍能满足计算要求。
In order to develop the SCR control oriented computational model,in this paper,the Simulink software was used to establish the SCR wall temperature model,which include one gas temperature solving sub model and one wall temperature solving sub model.The simulated wall temperature and the experiment value are compared during the temperature rising and dropping process.The result shows that when the temperature is rising,the calculated value is in good agreement with the experiment value,with a error about10 degree.While in the process of temperature dropping,the error between simulation value and experiment value is a little high,however the result can still meet the requirement.
In order to develop the SCR control oriented computational model,in this paper,the Simulink software was used to establish the SCR wall temperature model,which include one gas temperature solving sub model and one wall temperature solving sub model.The simulated wall temperature and the experiment value are compared during the temperature rising and dropping process.The result shows that when the temperature is rising,the calculated value is in good agreement with the experiment value,with a error about10 degree.While in the process of temperature dropping,the error between simulation value and experiment value is a little high,however the result can still meet the requirement.
引文
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[4]Na Hanbee,Reed Dennis,Annaswamy Anuradha,et al.Control-oriented Reduced-order Models for Urea Selective Catalytic Reduction Systems Using a Physics-based Approach[C].SAE paper 2011-01-1326,2011.
[2]Schr C M,Onder C H,Geering H P.Control-Oriented Model of an SCR Catalytic Converter System[C].SAE2004-01-0153,2004.
[3]Shost Mark,Noetzel John,Wu Ming-Cheng,et al.Monitoring,Feedback and Control of Urea SCR Dosing Systems for NOxReduction:Utilizing an Embedded Model and Ammonia Sensing[C].SAE 2008-01-1325,2008.
[4]Na Hanbee,Reed Dennis,Annaswamy Anuradha,et al.Control-oriented Reduced-order Models for Urea Selective Catalytic Reduction Systems Using a Physics-based Approach[C].SAE paper 2011-01-1326,2011.