Quantitative feedback design of air and boost pressure control system for turbocharged diesel engines

Yue Yun Wang; Ibrahim Haskara; Oded Yaniv

doi:10.1016/j.conengprac.2011.02.006

Quantitative feedback design of air and boost pressure control system for turbocharged diesel engines

Yue Yun Wang, Ibrahim Haskara, Oded Yaniv

Research output: Contribution to journal › Article › peer-review

Abstract

For modern diesel engines, variable geometry turbocharger (VGT) is used to boost engine power output. In addition, exhaust gas recirculation (EGR) is utilized to reduce engine out NO_x emission. To realize these functions, a multivariable control system needs to control both VGT and EGR valve to deliver desired intake manifold (or boost) pressure, and desired EGR flow rate. This two-input and two-output system is nonlinear with cross-couplings between the boost and EGR responses to the input actuators, the system parameters are varying with different engine operating conditions. This paper proposes a closed loop design of a multivariable VGT/EGR control system for a turbocharged diesel engine. The control system is synthesized based on quantitative feedback theory to maintain robust stability and performance via sequential MIMO loop shaping in the frequency domain. Experiment results are included from a turbocharged diesel engine to show the effectiveness of the proposed control design.

Original language	English
Pages (from-to)	626-637
Number of pages	12
Journal	Control Engineering Practice
Volume	19
Issue number	6
DOIs	https://doi.org/10.1016/j.conengprac.2011.02.006
State	Published - Jun 2011
Externally published	Yes

Keywords

Engine powertrain control
Gain scheduling control
Quantitative feedback design
Robust multivariable controls
System identification

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10.1016/j.conengprac.2011.02.006

Cite this

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title = "Quantitative feedback design of air and boost pressure control system for turbocharged diesel engines",

abstract = "For modern diesel engines, variable geometry turbocharger (VGT) is used to boost engine power output. In addition, exhaust gas recirculation (EGR) is utilized to reduce engine out NOx emission. To realize these functions, a multivariable control system needs to control both VGT and EGR valve to deliver desired intake manifold (or boost) pressure, and desired EGR flow rate. This two-input and two-output system is nonlinear with cross-couplings between the boost and EGR responses to the input actuators, the system parameters are varying with different engine operating conditions. This paper proposes a closed loop design of a multivariable VGT/EGR control system for a turbocharged diesel engine. The control system is synthesized based on quantitative feedback theory to maintain robust stability and performance via sequential MIMO loop shaping in the frequency domain. Experiment results are included from a turbocharged diesel engine to show the effectiveness of the proposed control design.",

keywords = "Engine powertrain control, Gain scheduling control, Quantitative feedback design, Robust multivariable controls, System identification",

author = "Wang, {Yue Yun} and Ibrahim Haskara and Oded Yaniv",

year = "2011",

month = jun,

doi = "10.1016/j.conengprac.2011.02.006",

language = "אנגלית",

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AU - Haskara, Ibrahim

AU - Yaniv, Oded

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N2 - For modern diesel engines, variable geometry turbocharger (VGT) is used to boost engine power output. In addition, exhaust gas recirculation (EGR) is utilized to reduce engine out NOx emission. To realize these functions, a multivariable control system needs to control both VGT and EGR valve to deliver desired intake manifold (or boost) pressure, and desired EGR flow rate. This two-input and two-output system is nonlinear with cross-couplings between the boost and EGR responses to the input actuators, the system parameters are varying with different engine operating conditions. This paper proposes a closed loop design of a multivariable VGT/EGR control system for a turbocharged diesel engine. The control system is synthesized based on quantitative feedback theory to maintain robust stability and performance via sequential MIMO loop shaping in the frequency domain. Experiment results are included from a turbocharged diesel engine to show the effectiveness of the proposed control design.

AB - For modern diesel engines, variable geometry turbocharger (VGT) is used to boost engine power output. In addition, exhaust gas recirculation (EGR) is utilized to reduce engine out NOx emission. To realize these functions, a multivariable control system needs to control both VGT and EGR valve to deliver desired intake manifold (or boost) pressure, and desired EGR flow rate. This two-input and two-output system is nonlinear with cross-couplings between the boost and EGR responses to the input actuators, the system parameters are varying with different engine operating conditions. This paper proposes a closed loop design of a multivariable VGT/EGR control system for a turbocharged diesel engine. The control system is synthesized based on quantitative feedback theory to maintain robust stability and performance via sequential MIMO loop shaping in the frequency domain. Experiment results are included from a turbocharged diesel engine to show the effectiveness of the proposed control design.

KW - Engine powertrain control

KW - Gain scheduling control

KW - Quantitative feedback design

KW - Robust multivariable controls

KW - System identification

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Quantitative feedback design of air and boost pressure control system for turbocharged diesel engines

Abstract

Keywords

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