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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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

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

CLC Number: 

  • TP273
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