液体火箭推进系统故障过程建模与仿真研究  

Modeling and simulations of the failure process for liquid propellant rocket propulsion systems

作　　者：杨尔辅[1] 徐用懋[1] 张振鹏[2] 刘国球 

机构地区：[1]清华大学自动化系,北京100084 [2]北京航空航天大学宇航学院,北京100083

出　　处：《清华大学学报（自然科学版）》2001年第3期104-108,共5页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目! (5 94860 0 5 ) ;高等学校博士学科点专项科研基金项目! (96-4 3 )

摘　　要：为克服由于试验或飞行数据不足而无法获取系统足够故障模式的问题 ,开展了液体火箭推进系统故障过程建模与计算机仿真研究工作。结合具体的模型系统 ,研究了各组件统一的故障描述方法 ,形成了表征系统故障过程的方程组。针对故障方程组的超强刚性和非线性特性问题 ,研究了解决该问题的数学方法。给出了系统故障过程的具体仿真实例以及与实际试车结果的对比分析 。To overcome the difficulties on acquiring enough fault modes from ground and flight test data, the failure process for liquid propellant rocket propulsion systems was modeled. For a specific model system, a uniform description method of system failures was used to develop the equations for describing failures of the model system. Since the equations are very stiff and nonlinear, the Runge Kutta method with a variable step and the Treanor method was used respectively to solve the equations. The large number of examples from the computer simulations of the system failures were compared with the results of fire tests, and results demonstrate that the model and methods developed in this research are sound and valid.

关 键 词：故障诊断 故障检测 液体火箭推进系统 状态监控 过程建模 计算机仿真 故障方程组 

分 类 号：V434.1[航空宇航科学与技术—航空宇航推进理论与工程]