基于多信号流图模型的导弹系统级故障诊断技术研究

Research on Missile System Levels’ fault Diagnosis Technique Based on Multi-signal Flow Graphs Model

摘要:

为了实现对导弹装备系统级故障的诊断,提出了基于多信号流图模型的导弹故障诊断方法;该方法利用多信号流图模型建立系统的层次结构模型,在对导弹系统级测试性指标进行分析的同时,生成故障模式-测试相关性矩阵;在导弹测试出现故障时,利用故障模式与测试的相关性对相关性矩阵进行化简后,可将故障定位到具体LRU;最后,利用某型导弹电气系统对该方法进行了验证,试验结果证明,该方法对于导弹系统级的测试性建模与分析是有效的,利用该模型能够对导弹系统级故障进行准确定位。

Abstract:

In order to achieve diagnosis on missile system levels’ fault, this paper proposes a method of diagnosis on missile based on multi-signal flow graphs model. This method makes use of multi-signal flow graphs models to build system’s layer structure models. Then analyze the missile system levels’ testability index, the correlated matrix (fault mode to test) will be produced simultaneously. When faults are found on missile during test, simplify the correlated matrix with the correlation between fault mode and test, and then the fault can be located to LRU. Finally, prove the method with applying the method on electric system. The result proves that, this method is effective to missile system levels’ testability model building and analyze. Utilize the model to locate the fault on missile system levels precisely.