发动机进气控制系统研究

基于发动机平均值模型理论构建了进气系统仿真模型，并在enDYNA高仿真模型上验证了该模型的准确性。为了解决发动机传统控制系统不能很好协调各种互相冲突的扭矩需求问题，以扭矩需求为中心，以进入气缸的气体流量的精确控制为目的，提出了进气流量的控制方案，并将方案中的非线性因素容积效率采用Map的形式处理，将电子节气门的非线性因素直接建立到仿真模型中。设计了节气门模糊自适应PID跟踪控制器，并在构建的发动机平均值模型上验证了控制器的控制效果，最终实现了进气流量的精确控制。

Research of Engine Intake Control System

Based on the mean value engine model theory, air intake system simulation model has been established and the accuracy of the model has been verified on the enDYNA simulation model. The traditional engine control system can＇t coordinate various conflicts of torque requirements very well. In order to solve this problem, this article took torque demand as a central idea, for the purpose of accurate control of the mass of intake flow air, proposed a control scheme, and used MAP to cope with the nonlinear factor volumetric efficiency in the scheme, also the nonlinear factors of electronic throttle are modeled in the simulation model. Besides, a fuzzy adaptive PID controller has been designed, and whose effect has been confirmed on the mean value engine model, finally the accurate control of the mass of intake flow air was realized.