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第43届中国控制会议

作者： Zhixi Liu Tao Chen Peng Zhou Daxin Chen Shuang Wang Chaoyang Sun State Key Laboratory of Engines Tianjin University FAW Jiefang Automotive Co. Ltd

To achieve precise control of rail pressure and enhance the performance of a diesel engine,a feedforward + sliding mode active disturbance rejection control(F-SMADRC) algorithm is proposed. Focusing on a six-cylinder high-pressure common rail diesel engine,the mathematical models of its fuel metering unit,high-pressure fuel pump,common rail pipe,and fuel injector are derived. An experimental design is implemented to identify the parameters and validate the accuracy of the controlled object model. Finally,the proposed control algorithm is validated on the Simulink simulation platform,including testing its control effectiveness under both steady-state and transient conditions. A comparative evaluation is conducted against traditional PID and ADRC algorithms,considering performance metrics such as overshoot,response time,and absolute ***,the adaptive and anti-interference capabilities of the algorithm are explored under conditions of injector nozzle blockage,sudden changes in engine speed and fuel injection pulse width. Simulation results demonstrate that the proposed control algorithm exhibits minimal fluctuations in steady-state conditions,low overshoot and fast response time in transient conditions,effectively regulating rail pressure,and possessing robustness and adaptive capabilities.

关键词： rail pressure control F-SMADRC algorithm six-cylinder high-pressure common rail diesel engine object model

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Design of rail pressure Tracking controller for Novel Fuel Injection System

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Journal of Shanghai Jiaotong university(Science) 2013年第3期18卷 264-270页

作者：华海德马宁马捷黄河 State Key Laboratory of Ocean Engineering Shanghai Jiaotong University

This paper proposes a rail pressure tracking controller based on a novel common rail system. A mathematical model, based on physical equations, is developed and used for feed forward control design. rail pressure peak sampling mechanism is designed to remove the disturbance of rail pressure due to fuel injection. All enhanced tracking differentiator is designed to get smooth tracking signal and exact differential signal from signal with noise. Double loop control strategy is designed to decouple the system and to improve dynamic performance of the system. Experimental results indicate that fluctuation of rail pressure is within il MPa in steady condition, while within ±3 MPa in transient condition, which verifies the effectiveness of the proposed rail pressure control strategy.

关键词： accumulating distribution fuel injection system (ADFIS) rail pressure control tracking differentiator double Iooo control

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