基于MotoTron平台的二冲程煤油发动机控制器开发

为实现某二冲程航空煤油发动机控制器的快速开发和策略验证,结合MotoTron快速控制原型开发平台丰富的软硬件资源,依据空气辅助缸内直喷与双火花塞点火的系统设计需求,开发了一套利用8缸机程序控制4缸机的发动机控制器。分析了基于快速控制原型软件架构的控制软件设计方法,利用开发软件MotoHawk配置底层程序和搭建发动机控制系统,并结合Matlab/Simulink建立上层控制策略,实现了完整的控制系统开发。在台架上进行了冷起动测试,发动机起动后转速较平稳,点火提前角、喷油提前角和喷油脉宽的调节过程符合控制策略设计,空燃比控制稳定,空燃比误差在10%以内。发动机顺利过渡到正常工况,验证了冷起动控制策略的可行性,实现了控制器的基本功能,控制器设计满足要求。

Development of two-stroke kerosene engine controller ,based on MotoTron platform

In order to realize the rapid development and strategy verification of the two-stroke kerosene aviation engine controller, in combination with the rich software and hardware resources of the MotoTron rapid control prototype development platform, based on the system design requirements of air-assisted direct injection and dual-spark plug ignition, an engine controller for controlling the four-cylinder engine using an eight-cylinder program was developed. The design method of control software based on the rapid control prototype software architecture was analyzed, and the development software, MotoHawk was used to configure the underlying program and build the engine control system. Then, in combination with Matlab/Simulink, the upper control strategy was established to completely develop the whole control system. The cold start bench tests were carried out, during which the speed of the engine was stable, the adjustment processes of the ignition advanced angle, the injection advance angle and the injection pulse width were in accordance with the control strategy. And the air-fuel ratio control was stable, with the error within 10%. The smooth transitions of the engine to normal conditions verified the cold start control strategy. And the fundamental functions of the controller had been realized, showing that the controller design could meet the requirements.