【摘要】 以运七飞机起落架为实例研究开发了通用故障诊断专家系统，对系统的需求分析和功能、知识的获取与表达、推理逻辑及系统模型建立等技术关键进行了论述，且用故障树分析（ＦＴＡ）、故障模式、影响分析（ＦＭＥＡ）及面向对象技术等方法作为解决关键的措施．具有良好的通用性、开放性和很强的推理能力是该系统的特点．该系统对确保运七飞机安全正点的飞行起到了积极的作用．更多还原

【Abstract】 Taking the landing-gear of Y7 airliner as an example. a general fault diagnosis expertsystem was developed. The key tasks. such as the requirements analysis, functions definition,knowledge acquisition and representation. inference logics. and system modelling are discussed. FTA, FMEA, and object-oriented techniques are used as the basic approaches for accomplishing these tasks. The system has the features of good generality,openness.and powerfull inference capability. It has played an important role in assuring an schedule dispatchand flight safety of Y7 airliner.更多还原