Abstract: Aiming at the practical difficulties of fault knowledge sharing and application in current aircraft maintenance support work，representation modeling and retrieval application of aircraft fault knowledge are studied.Based on the field characteristics and sharing requirement of aircraft fault knowledge，ontology is selected as knowledge representation method.The knowledge source of aircraft fault ontology is analyzed according to ontology elements，and the construction method of ontology engineering for aircraft fault knowledge is proposed.On the basis of the ontology model，semantic retrieval model of aircraft fault knowledge is researched，similarity matching algorithm of semantic retrieval based on nearest neighbor retrieval strategy and its implementation process are proposed.A prototype of aircraft fault knowledge management system is developed and applied in an aircraft manufacturing enterprise.

Key words: aircraft fault, ontology modeling, semantic retrieval

摘要： 针对目前飞机维修保障工作中故障知识共享应用的实际困难，对飞机故障知识的表达建模以及检索应用进行了研究。依据飞机故障知识的领域特性和共享需求，采用本体作为知识表示的方法。根据本体组成元素分析了飞机故障本体的知识来源，并提出了飞机故障知识的本体工程构建方法。在本体模型的基础上，研究了飞机故障知识的语义检索模型，基于最近相邻检索策略提出了飞机故障本体的语义检索相似匹配算法及其实现流程。开发飞机故障知识管理原型系统并在某航空制造企业进行应用验证。

关键词: 飞机故障, 本体建模, 语义检索