吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (6): 1913-1923.doi: 10.13229/j.cnki.jdxbgxb201506027

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基于“三步法”的柴油机urea-SCR系统控制设计

赵靖华1，2， 陈志刚1， 胡云峰1， 陈虹1   

  1. 1.吉林大学 汽车仿真与控制国家重点实验室,长春 130022;
    2.吉林师范大学 计算机学院,吉林 四平 136002
  • 收稿日期:2015-01-27 出版日期:2015-11-01 发布日期:2015-11-01
  • 通讯作者: 陈虹(1963-),女,教授,博士生导师.研究方向:非线性控制应用及汽车电子控制.E-mail:chenh@jlu.eud.cn
  • 作者简介:赵靖华(1980-),男,讲师,博士.研究方向:发动机尾气排放控制.E-mail:zhaojh08@mails.jlu.edu.cn
  • 基金资助:
    国家自然科学基金重点项目(61034001); 吉林省科技发展计划、吉林省公共计算平台基金资助项目(20130101179JC-16)

Design of diesel engine's urea-SCR system controller using triple-step method

ZHAO Jing-hua1,2, CHEN Zhi-gang1, HU Yun-feng1, CHEN Hong1   

  1. 1.State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022,China;
    2.Computer College, Jilin Normal University, Siping 136002, China
  • Received:2015-01-27 Online:2015-11-01 Published:2015-11-01

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摘要： 为了同时实现较高的NOx转化率和较低的氨逃逸,提出了一种新颖的面向控制的urea-SCR模型,基于三步非线性控制方法——“三步法”设计了控制器。该控制器能够调节时变参数的非线性系统,跟踪理想的氨覆盖率目标。针对测量噪声和系统的不确定性,研究分析了该闭环系统的稳定性。研究基于精确enDYNA模型,在FTP75瞬态测试循环条件下,与蒙特卡罗随机参数法选取的最优PID控制器对比表明,所提出的控制策略具有很大优势。

关键词: 自动控制技术, 尿素选择性催化还原系统控制, 三步非线性控制方法(“三步法”), 输入状态稳定性理论

Abstract: For simultaneously achieving NOx conversion efficiency and low ammonia slip, a new control-oriented model of urea-SCR systems and novel nonlinear controller based on triple-step nonlinear method are presented. The proposed controller could drive the parameter-varying nonlinear system to track the desired ammonia coverage ratio. The robustness of the controller against the measurement noises and system uncertainties are analyzed. Based on validated enDYNA model, transient FTP75 driving cycle simulation is conducted to evaluate the effectiveness of the proposed strategy. Comparisons with Monte Carlo methods' optimal PID controller are presented to show the advantages of the proposed strategy.

Key words: automation technology, urea-SCR systems control, triple-step method, input-to-state stable

中图分类号: 

  • TP273
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