飞机设计选材专家系统的开发

在对飞机设计选材工作进行分析的基础上,提出基于浏览器/服务器(B/S,Browser/Service)结构的飞机设计选材专家系统总体框架和系统各功能的实现方式,并开发了系统的原型.该系统将基于规则、案例和模型的选材方法结合在一起,通过一个通用的推理机实现推理.该推理机功能通过CLIPS(C Language Integrated Production System)专家系统开发工具实现.该系统主要有3个工作步骤:选材的定性推理,材料检索和材料综合性能排序.用户可以方便地使用浏览器对系统进行访问和操作.该系统飞机机翼大梁选材实例验证了该系统的有效性,可对飞机设计人员的选材工作起指导作用.

Development of aircraft-design material-selection expert system

Following a discussion on aircraft-design material-selection, a browser/service architecture framework of materials selection expert system, together with its implementation and prototype, was put forward. The system integrated rule-based reasoning, case-based reasoning and model-based method, and it could reason with a general inference engine. The inference engine’s function was implemented by a popular expert system development tool—C language integrated production system(CLIPS). When this system functioned, it worked in these three steps: reasoning for qualitative selection results, searching materials from material database and ranking the materials to obtain a selection result. User could access the system with browsers conveniently. Its effectiveness was demonstrated by a case of wing-spar materials-selection.