基于自抗扰技术的废气再循环阀位置伺服控制  

Position Servo Control of Exhaust Gas Recirculation Valve Based on Auto Disturbance Rejection Technology

作　　者：程鑫[1,2] 李小康 付聪 CHENG Xin;LI Xiaokang;FU Cong(School of Mechanical and Electronic Engineering,Wuhan University of Technology,Wuhan 430070,China;Hubei Maglev Engineering Technology Research Center,Wuhan 430070,China)

机构地区：[1]武汉理工大学机电工程学院,湖北武汉430070 [2]湖北省磁悬浮工程技术研究中心,湖北武汉430070

出　　处：《数字制造科学》2024年第2期111-116,共6页

摘　　要：废气再循环EGR(exhaust gas recirculation)阀能有效降低燃油车尾气排放,但气流扰动、摩擦力、驱动电机特性等非线性因素影响了EGR阀位置控制的性能。针对EGR阀位置伺服控制的要求,提出了一种基于扩展状态观测器、线性误差状态反馈控制律和跟踪微分器的自抗扰控制策略,以扩展状态观测的方式估计外部扰动与系统动力学不确定性扰动,进一步以反馈控制的方式进行补偿,提高了系统对于不确定性扰动的抑制能力,实现了较好的位置伺服控制精度。最后设计了基于MATLAB的仿真平台,验证控制策略的有效性。The Exhaust Gas Recirculation(EGR)valve significantly reduces exhaust emissions in fuel vehicles.However,factors such as airflow disturbance,friction,and drive motor characteristics affect the EGR valve’s position control performance.This paper proposes an Auto Disturbance Rejection Control(ADRC)strategy utilizing an extended state observer,a nonlinear error state feedback controller,and a tracking differentiator.This strategy estimates external disturbances and system dynamics uncertainties,compensates via feedback control,and improves the system′s disturbance rejection capabilities,achieving high-precision position servo control.The effectiveness of this control strategy is verified through a MATLAB-based platform.

关 键 词：自抗扰控制 废气再循环阀 状态观测器 动力学模型 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]