摘要： 机械产品概念设计是一个复杂的、病态结构的问题,它需要多种知识和求解策略的支持。本文在分析机械设计一般过程的基础上,介绍一个用于三系列工业汽轮机方案设计专家系统(TDES)的概念设计方法。该方法的主要特征是利用各种任务知识去制定设计规划及解方法,再由设计规划指导具体的参数设计。

关键词: 机械产品概念设计, 知识

Abstract: Mechanical product concept design is complex and ill-structured. A complex mechanical system can be hierarchically decomposed into some simple sub-systems, with each sub-system designed differently. All solutions to sub-problems can be combined to produce an overall solution. TDES is a design-type expert system based on dynamic plan. It makes design plan use task information and task solving knowledge, and solves sub-problems using domain knowledge. This paper discusses the general design process of mechanical system and the characteristics of concept design. Based on the discussion, the approach to mechanical system concept d'esign used by TDES is introduced in detail.