在常用的火控系统故障诊断方法中,直观观察判断法对维修人员经验要求较高,备件转换法则应用场合有限,而采用故障树分析方法对火控系统进行故障诊断与排除,当碰到逻辑门时,往往由于诊断路径选择不当,导致工作量大,诊断效率降低。针对上述问题,在故障树分析法的基础上,引入层次分析法,建立诊断层次结构模型,以量化后的经验信息优化故障树诊断搜索策略,得出合理的故障排除方案。通过实例分析和实验验证,证明经层次分析法优化后的故障排除法比盲目排除法耗时更短、效率更高,对提高复杂火控系统的故障诊断效率具有一定的实用价值。

During fault diagnosing of general fire control system, visual observation method, backup device replacement method, and fault tree analysis method are mainly used. Visual observation method requires maintenance staffs who own much experience and stronger ability. Backup device replacement method could be only used to limited situation. While adopting the method of fault tree analysis on fault diagnosis of fire control system leads to heavy workload and low efficiency caused by choosing diagnosis path incorrectly when it came to logic gates. In view of such problems, the Analytic Hierarchy Process (AHP) based on fault tree analysis is introduced, and by adopting optimized research strategy for quantizing useful information, the reasonable troubleshooting methods are obtained. The theory analysis and experimental results show that troubleshooting method optimized by AHP not only has shorter time and higher efficiency than that for blind troubleshooting method, but also has certain practical value for improving the diagnosis efficiency of the complex fire control system.