Title :
A Sliding Mode Observer for a Typical Diesel Engine Particulate Aftertreatment System
Author :
Su, Fan ; Gordon, Brandon W. ; Hong, Henry
Author_Institution :
Concordia Univ., Montreal
Abstract :
A differential-algebraic system model for a typical diesel engine particulate aftertreatment system, which consists of exhaust pipes, a fuel burner for active soot regeneration control and a diesel particulate filter (DPF), is introduced. The model is developed based on control volume method and has features of nonlinear and high-index. The model is realized using a singularly perturbed sliding manifold (SPSM) approach, and system parameters are verified using experimental data. The stability and observability of linearized model are discussed. The original system model is transformed into a normal control form for which a sliding mode observer (SMO) is designed. An example application of the SMO on the aftertreatment system is demonstrated and results are compared with that of a Luenberger-like pole placement observer.
Keywords :
diesel engines; exhaust systems; observers; singularly perturbed systems; variable structure systems; active soot regeneration control; diesel engine particulate aftertreatment system; diesel particulate filter; differential-algebraic system; exhaust pipes; fuel burner; singularly perturbed sliding manifold; sliding mode observer; Atmospheric modeling; Diesel engines; Engine cylinders; Filters; Fuels; Heat engines; Heat transfer; Internal combustion engines; Sliding mode control; Temperature control; differential-algebraic equations (DAEs); nonlinear system; sliding mode observer;
Conference_Titel :
Mechatronics and Automation, 2007. ICMA 2007. International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-0828-3
Electronic_ISBN :
978-1-4244-0828-3
DOI :
10.1109/ICMA.2007.4303716
