Abstract: The small deviation linear theory and the Willoh method were brought to use in establishing a dynamic mathematical model of a liquid fuel ramjet and a model of a missile body.The models were run integrally on a microcomputer,then an integrative real time digital simulator of a liquid fuel ramjet engine and missile body was formed.The simulator was connected with a real control system of a liquid fuel ramjet engine through the input and output interfaces.So a hardware in the loop simulation system of a liquid fuel ramjet engine,a missile body and the control system of the engine was made up to.And the simulation experiment at dynamic conditions was completed.

Key words: Liquid fuel ramjet engine;Engine control;Control system;Semi physical simulation

摘要： 运用小偏离线性化理论和Willoh方法 ,建立了液体冲压发动机和弹体动态数学模型。动态数学模型在微型计算机上一体化运行 ,形成液体冲压发动机 弹体一体化实时数字仿真器。实时数字仿真器通过输入输出接口与液体冲压发动机的实际控制系统进行联接 ,组成液体冲压发动机、弹体和发动机控制系统半实物仿真系统。对冲压发动机飞行马赫数和控制系统供油量的半实物仿真结果表明 ,系统能满足研制工作的需要。

关键词: 液体冲压发动机;发动机控制;控制系统;半实物仿真