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Energies 2015, 8(6), 5018-5039; doi:10.3390/en8065018

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

1
Laboratory of Powertrain System Science & Control, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
2
China North Vehicle Research Institute, Beijing 100072, China
*
Author to whom correspondence should be addressed.
Academic Editor: Brian Agnew
Received: 11 February 2015 / Revised: 4 May 2015 / Accepted: 14 May 2015 / Published: 28 May 2015
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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. View Full-Text
Keywords: diesel engine control; EGR system; state space model; state feedback controller; oxygen fraction estimation diesel engine control; EGR system; state space model; state feedback controller; oxygen fraction estimation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Dong, T.; Zhang, F.; Liu, B.; An, X. Model-Based State Feedback Controller Design for a Turbocharged Diesel Engine with an EGR System. Energies 2015, 8, 5018-5039.

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