通用故障诊断专家系统开发工具

介绍一个基于可靠性分析方法的非实时故障诊断专家系统(FDES)的通用开发工具(FDEST),可用于建立各类武器装备和民用产品的故障诊断专家系统,具有很强的推理能力和良好的开放性.文中论述FDEST的逻辑结构、系统功能;基于可靠性分析方法——故障树分析(FTA)的故障诊断推理方法:正、反向动态推理逻辑,支持Bayes(概率)、Mycin(置信度)和Fuzzy(模糊)三种不精确推理算法和四种不同的故障逻辑关系;面向对象与规则相结合、具有很强表达能力的综合知识表达方式,支持多媒体的动态诊断推理解释机制和故障处理方法(文本、图像、语音和视频);应用面向对象技术的软件设计与实现:对象的划分(FDEST对象、知识对象和FDES对象)、对象通讯关系及系统接口等系统的关键技术. 

General Development Shell for Fault Diagnostic Expert System

FDEST—The general development shell for non-real Fault Diagnostic Expert Systems(FDES) based on the reliability analysis methods is introduced in this paper,there are strong inference and good openness,it can apply to establish FDES for varied military materiel and civilian products.At first,the structure and functions of the FDEST is described,and then,the reasoning method based on reliability analysis method-Fault Tree Analysis(FTA):forwards and backwards inference logic,supporting three imprecise arithmetic about Bayes,Mycin,Fuzzy and four relationship of fault logic;object-oriented and rule representation of knowledge,the supporting multimedia interpretation engine and fault process model(text,image,voice and video);Applying object-oriented technique to design and implement the software:dividing objects(FDEST object,knowledge object and FDFS object),object communications and system interface etc.key technique is discussed.