防空导弹自动驾驶仪测试性建模研究与应用

Research and Application on Air Defense MissileAutopilot Testability Modeling

摘要:

为了得到防空导弹自动驾驶仪的故障检测与诊断策略,减少自动驾驶仪的测试费用,建立了自动驾驶仪的测试性模型并进行分析,解决了建模的难点;通过多层抽象混合推理故障建模方法推导了自动驾驶仪结构与测试点之间的关系,根据测试点的特征和自动驾驶仪工作原理建立信息流模型,在此基础上,利用故障与测试间的相关性矩阵来描述测试性模型;基于此模型设计了诊断策略构建方法;实际应用表明,建立测试性模型的方法完全正确,通过模型能够构建有效的检测与诊断策略,缩短测试时间。

Abstract:

In order to get the fault detecting and diagnostic strategy of the air defense missile autopilot and reduce the cost of autopilot testing, a testability model of autopilot was built and analyzed, and the difficulties to build model were solved. The relationship between system structure and test points was caculated with multiple level abstraction and hybrid reasoning algorithm the information flow model was built according to the test points characteristic and working principle of autopilot. on this basis, the testability model was described by the relativity matrix between failure and test according to the testability model, the diagnostic strategy constructing method was designed. The practical application shows that the modeling approach is exactly correct and the built testability model could construct effective detecting and diagnostic strategy which is able to reduce the time of autopilot testing.