基于AMESim／Simulink的CNG发动机燃料喷射闭环控制研究

利用AMES im软件提供的平均值发动机模型和一些发动机专用模块库建立虚拟发动机,同时利用AMES im和M atlab/S imu link接口模块成功地将两种软件的各自特点结合其来,在S imu link中完成了整个控制系统建模,并对应用氧传感器信号的CNG发动机闭环控制进行了联合仿真。仿真结果表明:通过在S imu link中建立的ECU对AMES im中的虚拟发动机进行控制,实现了在稳态工况下将空燃比控制在理论空燃比附近一个小范围内;利用AMES im和S imu link联合仿真能够实现物理模型和控制算法的良好结合,使控制算法的研究得到更具意义的结果。

Research of Closed Loop Control for CNG Engine Injection Based on AMESim/Simlink

A virtual engine was set up by MVEM and dedicated engine module base offered by AMESim,The interface modules in software AMESim and the Simulink were used to connect the features of the two softwares.,The overall control system was set up in Simulink.The AMESim and Simulink corporation simulation model for CNG engine electronic controlling system was completed.The closed loop controlling system of switching oxide sensor in CNG engine injection was researched.Through the control of CNG engine by ECU developed in Simulink,the switching oxide sensor had attained very good results.At the same time,better connection between a physical model and a controlling method was realized by corporate simulation of AMESim and Simulink.The approach makes the study of control scheme more useful.