【摘要】 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。更多还原

【Abstract】 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.更多还原