发动机电磁驱动配气机构的控制技术研究

Study on Control Technology of Engine Electromagnetic Actuated Valve Train

针对一种多驱动力耦合的电磁驱动气门,建立了动力学、电路和磁路三部分耦合的系统模型,根据电磁驱动配气机构系统的工作要求开发了合理的控制气门运动的控制策略。采用最优控制理论设计了线性二次型跟踪器和线性二次型状态调节器,分别控制气门的快速运动和落座,并利用MATLAB/Simulink对其动态特性进行了仿真研究。结果表明,这种控制方案可以使电磁驱动配气机构系统满足高响应和软着陆的要求。

The basic elements and principle of engine＇ s electromagnetic actuated valve train coupled with multi-force was introduced. A coupling system model was developed from three points of view ： dynamics, electric circuit and magnetic field. The suitable control strategy was developed to control the movement of the valve with optimal control theory. And then, the controller was designed, and the dynamic characteristics of the electromagnetic actuated valve train were obtained from the simulation. The results show that the electromagnetic actuated valve train can meet the requirements of quick response and soft landing with this control scheme.