Active disturbance rejection control of common rail pressure for Gasoline Direct Injection engine
Active disturbance rejection control of common rail pressure for Gasoline Direct Injection engine
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DOI：
10.1109/acc.2013.6580162
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发表时间：
2013-06
期刊：
影响因子：
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通讯作者：
Qifang Liu;X. Gong;Yunfeng Hu;Hong Chen
中科院分区：
文献类型：
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作者：
Qifang Liu;X. Gong;Yunfeng Hu;Hong Chen
直喷式汽油机的轨压控制是实现精确喷油控制的关键问题之一。提出了一种基于自抗扰控制框架的轨压控制器。建立了缸内直喷汽油机燃油喷射系统的详细非线性模型。为控制器的设计引入了适当的模型简化。针对这一含有内部不确定性和外部干扰的复杂非线性系统，采用非线性状态误差反馈控制和扩张状态观测器来处理压力跟踪问题。仿真结果证明了所提出的控制器的有效性。
The rail pressure control in Gasoline Direct Injection (GDI) engines is considered as one of key issues for precise control of fuel injection. This paper presents a rail pressure controller based on the framework of active disturbance rejection control (ADRC). The detailed nonlinear model of the fuel injection system for GDI engine is carried out. Suitable model simplification is introduced for the controller design. According to the complex nonlinear system which contains internal uncertainties and external disturbance, a nonlinear state error feedback control and an extended state observer are applied to deal with the pressure tracking problem. Simulation results are provided to demonstrate the effectiveness of the proposed controller.