中文摘要：

为了提高故障诊断网格环境下服务发现的质量，提出了基于本体的故障诊断网格服务发现方法。该方法采用本体来描述故障诊断领域功能特征，通过扩展Web服务本体描述语言来为故障诊断网格服务提供语义表示，采用故障诊断功能特征为匹配准则建立语义匹配机制。根据该方法构建的故障诊断语义信息服务组件已成功应用于某网格化故障诊断系统中。

英文摘要：

To improve quality of services discovery in grid--based fault diagnosis environment, a service discovery approach based on ontology was proposed. The approach utilized ontology to describe the function characteristics of fault diagnosis, and extended ontology Web language for service （OWL--S） to realize semantic representation of grid service, and then adopted functional characteristics of fault diagnosis as matching criterion to establish semantic matching mechanism. A semantic information service component of fault diagnosis according to the approach had been successfully applied to the grid--based fault diagnosis system.