在研究传统故障诊断方法的基础上,对专家系统的异构性问题进行了探讨,阐述了如何利用本体来解决专家系统的异构性问题,提出一种基于ontology的故障诊断方法,并将此方法应用于提升机故障诊断系统,解决了专家系统中的知识共享和重用的问题。 On the basis of studying the traditional fault diagnosis methods, this paper discusses the heterogeneity of expert systems, explains how to use ontologies to solve the problem of heterogeneity of expert systems, and proposes a fault diagnosis method based on ontology. The method is applied to the elevator fault diagnosis system, which solves the problem of knowledge sharing and reuse in the expert system.