无人机发动机瞬态工况空燃比控制策略研究  

Research on Air-Fuel Ratio Control Strategy of UAV Engine Transient Conditions

作　　者：马攀伟 贾强 王栋 贺根华 柳鑫 MA Panwei;JIA Qiang;WANG Dong;HE Genhua;LIU Xin(Air Force Early Warning Academy,Wuhan 430019)

机构地区：[1]空军预警学院

出　　处：《舰船电子工程》2019年第6期94-97,共4页Ship Electronic Engineering

摘　　要：为了解决无人机用转子发动机在瞬态工况的空燃比控制问题,基于发动机平均值模型,结合转子发动机实际工作过程,建立了转子发动机进气系统动态子模型和燃油动态子模型,然后利用逆模型原理设计了前馈燃油动态补偿器模型,并在Matlab/Simulink中对补偿效果进行了仿真分析。结果表明,该补偿器模型能够有效地补偿转子发动机瞬态工况时的喷油量,降低空燃比的最大偏差,缩短空燃比的稳定调节时间。In order to solve the air-fuel ratio control problem of rotor engine of the UAV in transient conditions,based on the engine mean value model,combined with the actual working process of rotor engine,the intake system dynamic sub-model and fuel dynamic submodel of rotor engine are established,and then utilized.The feedforward fuel dynamic compensator model is designed based on the inverse model principle,and the compensation effect is simulated and analyzed in Matlab/Simulink.The results show that the compensator model can effectively compensate the fuel injection amount in the transient condition of rotor engine,reduce the maximum deviation of the air-fuel ratio,and shorten the stable adjustment time of the air-fuel ratio.

关 键 词：转子发动机 平均值模型 燃油动态补偿器 空燃比 

分 类 号：U464.171[机械工程—车辆工程]