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针对传统专家系统推理机所存在的匹配冲突问题,提出了一种将专家案例推理用于板级电路故障诊断的方法;该方法重点研究了专家案例推理的索引策略和匹配原则,并给出了案例的表示和组织存储方法及案例库的维护措施;根据研究表明,将分层多级索引机制和k-近邻匹配原则相结合,利用专家案例推理对板级电路进行故障诊断,能够解决匹配冲突等瓶颈问题.通过以航空机载电子设备中电源电路出现故障为例,得出专家案例推理具有诊断速度快、精确度高等优点.
Aiming at the problem of matching conflict existing in traditional expert system inference engine, this paper presents a method of using expert case reasoning to diagnose board circuit fault. This method focuses on the indexing strategy and matching principle of expert case inference. Case representation and organization of storage methods and case base maintenance measures; According to the research shows that the combination of hierarchical multi-level indexing mechanism and k-nearest neighbor matching principle, the use of expert case-based reasoning circuit board fault diagnosis can solve the match conflict And other bottlenecks.Through the example of the failure of the power circuit in the airborne electronic equipment, it is concluded that the expert case-based reasoning has the advantages of fast diagnosis and high accuracy.