摘要： 本文在分析机械设计及工艺设计的特点的基础上,提出了相应的知识表示及推理机,并研制了机械设计及加工工艺设计的专家系统工具(MPPEST)。其知识获取工具的内容包括:知识表达、知识库维护(知识库完整性检验)和知识获取的辅助模块,MPPEST的推理是以框架推理为主导,规则推理为核心的复合型推理系统。本工具系统通过建立滚珠丝杠副工艺设计专家系统的使用,确认达到预期的功能。

Abstract: Based on analyzing the features of machine design and process planning, this paper puts forward the adaptive knowledge expressions and inference engines, and at the same time, a Machine Design and Process Planning Expert System Tool (MPPE-ST) is developed. Its knowledge acquisition system includes knowledge expressions, knowledge base integrity check and auxiliary moduls of knowledge acquisition. Its inference strategy is a complex inference engine with Frame Inference (FI) playing a leading role and Rule Inference(RI) being a core. It is affirmed that the expected goal of building MPPEST is reached through creating Ballscrew Process Planning Expert System (BPPES).