双发动机动力系统建模与仿真

Modeling and simulation of twin-engine powered system

针对某型无人飞行器采用的双发动机动力系统,根据控制需求建立了该型飞行器双发动机动力系统的数学模型,应用仿真软件搭建了发动机、操纵机构、传动系统和负载系统等模块的仿真模型;基于模型分析和仿真,采用单控制器策略控制两台发动机,对悬停状态下的飞行器双动力源系统进行了恒定转速控制仿真。通过与实验结果对比,基于该模型的发动机控制接近真实的发动机工作过程,该模型可以用于发动机控制器设计,缩短了控制器设计周期。

In this paper,the mathematical description of the model of twin- engine drivetrain is presented,and this drivetrain is used on an unmanned aerial vehicle( UAV). A simulating model consisting of such modules as engine,control mechanism,drive system and loading system is developed based on the tool of Matlab / Simulink. Based on the analysis and simulation of the model,the two engines are manipulated employing single controller,and a simulation is carried out with the constant speed control of the twin- engine of the flight at hovering state. Compared with the result of the experiment,the engine controlling based on this model is proved to be close to the real working process of authentic engine. This model can be applied to engine control design to shorten the design cycle.