Model-Based State Feedback Controller Design for a Turbocharged Diesel Engine with an EGR System

Tianpu Dong, Fujun Zhang, Bolan Liu and Xiaohui An
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Tianpu Dong: Laboratory of Powertrain System Science & Control, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Fujun Zhang: Laboratory of Powertrain System Science & Control, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Bolan Liu: Laboratory of Powertrain System Science & Control, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Xiaohui An: China North Vehicle Research Institute, Beijing 100072, China

Energies, 2015, vol. 8, issue 6, 1-22

Abstract: This paper describes a method for the control of transient exhaust gas recirculation (EGR) systems. Firstly, a state space model of the air system is developed by simplifying a mean value model. The state space model is linearized by using linearization theory and validated by the GT-Power data with an operating point of the diesel engine. Secondly, a state feedback controller based on the intake oxygen mass fraction is designed for EGR control. Since direct measurement of the intake oxygen mass fraction is unavailable on the engine, the estimation method for intake oxygen mass fraction has been proposed in this paper. The control strategy is analyzed by using co-simulation with the Matlab/Simulink and GT-Powers software. Finally, the whole control system is experimentally validated against experimental data of a turbocharged diesel engine. The control effect of the state feedback controller compared with PID controller proved to be further verify the feasibility and advantages of the proposed state feedback controller.

Keywords: diesel engine control; EGR system; state space model; state feedback controller; oxygen fraction estimation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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