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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 ,结果表明所建模型和数值求解方法对于研究液体火箭推进系统的故障过程是合理和有效的
In order to overcome the problem that sufficient failure mode of the system can not be obtained due to insufficient test or flight data, the fault process modeling and computer simulation of liquid propellant rocket propulsion system are studied. Combined with the specific model system, the uniform fault description method of each component was studied, and the system of equations describing the fault process of the system was formed. Aiming at the super rigidity and nonlinear characteristics of the fault equations, the mathematical method to solve the problem is studied. The simulation examples of the system failure process and the comparison with the actual test results are given. The results show that the proposed model and the numerical solution method are reasonable and effective for the research of the fault process of liquid propellant rocket propulsion system