Open AccessGPIO‐based rail pressure control for diesel high pressure common rail injection system
Author(s) -
Wang Jiapeng,
Sun Hao,
Dai Chen,
Li Shihua
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2019.1063
Subject(s) - common rail , diesel fuel , backstepping , controller (irrigation) , process (computing) , computer science , automotive engineering , control theory (sociology) , control unit , actuator , control system , diesel engine , control engineering , control (management) , engineering , electrical engineering , adaptive control , agronomy , artificial intelligence , biology , operating system
The rail pressure control in diesel high‐pressure common rail (HPCR) system is considered as one of the key issues for precise control of fuel injection. This study investigates the application of generalised proportional integral observer (GPIO)‐based control in diesel HPCR system. Firstly, a non‐linear mathematical model of HPCR system which uses the metering unit as the actuator is established based on hydromechanics under some proper simplifications. Secondly, a GPIO is developed to estimate the mismatched disturbance caused by the injection process. Then a composite controller combining GPIO and backstepping control method is designed. By introducing the disturbance estimations into the control design process, the disturbance rejection capability of the system is promisingly enhanced. The effectiveness of the proposed control method is validated by the simulation results.