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Terminal sliding mode control of rail pressure for gasoline direct injection engines
ChenZHANG,YingZHANG,CongCHAI,MiaoleiZHOU
0
(Department of Control Science and Engineering, Jilin University, Changchun Jilin 130022, China)
摘要:
The desired fuel rail pressure is a crucial factor for guaranteeing the gasoline direct injection (GDI) engine to work stably. In order to solve the rail pressure control problem, the detailed nonlinear model of GDI is derived and reasonable simplification of this model is carried out for the following controller design. Terminal sliding mode control strategy is proposed to design the rail pressure controller with Lyapunov stability. The designed approach with the fast terminal sliding mode surface makes the system have the capacity of global fast convergence and achieves precise tracking control. To demonstrate the validity of the designed control method, simulations are conducted by tracking the different reference rail pressures. Results show that the designed controller tracks the given reference accurately and has strong robustness.
关键词:  Rail pressure control, terminal sliding mode control, GDI system
DOI:
基金项目:The work was supported in part by the National Nature Science Foundation of China (No. 61803173) and in part by the Program of Science and Technology Development Plan of Jilin Province of China (No. 20180101052JC).
Terminal sliding mode control of rail pressure for gasoline direct injection engines
Chen ZHANG,Ying ZHANG,Cong CHAI,Miaolei ZHOU
(Department of Control Science and Engineering, Jilin University, Changchun Jilin 130022, China)
Abstract:
The desired fuel rail pressure is a crucial factor for guaranteeing the gasoline direct injection (GDI) engine to work stably. In order to solve the rail pressure control problem, the detailed nonlinear model of GDI is derived and reasonable simplification of this model is carried out for the following controller design. Terminal sliding mode control strategy is proposed to design the rail pressure controller with Lyapunov stability. The designed approach with the fast terminal sliding mode surface makes the system have the capacity of global fast convergence and achieves precise tracking control. To demonstrate the validity of the designed control method, simulations are conducted by tracking the different reference rail pressures. Results show that the designed controller tracks the given reference accurately and has strong robustness.
Key words:  Rail pressure control, terminal sliding mode control, GDI system