电子节气门控制系统研究

Study on Electronic Throttle System Controller Design

随着电子控制技术的飞速发展,人们对提高车辆动力性、经济性和排放等性能要求不断提高,能够实现节气门开度精确闭环控制的ETS系统应用日益广泛。本文在考虑弹簧扭矩、摩擦力、进气阻力、齿隙等非线性影响因素的基础上,建立ETS系统数学模型,应用PID、模糊、滑膜及其相结合的控制理论在Matlab/Simulink下设计了5种控制器,并对其阶跃响应特性进行比较分析。

With the rapid development of electronic control technology, the increasing requirements for vehicles＇ drive, economic and emission performances propel the application of Electronic Throttle System （ETS）, which can achieve accurate closed-loop control for throttle open angle. In this paper, the non--linear factors, such as spring torque, friction, intake resistance and gear clearance, are considered during the derivation of ETS model. Five controllers are designed in Matlab/Simulink, using PID, fuzzy, sliding model control approaches and their combining. Then step input simulations are performed and their response characteristics are compared.