A two-stage case retrieval strategy and algorithm are put forward. Rapid preview for 3D case model is realized. A prototype system based on CBR is developed for product design.

• 研究分析了基于实例的推理方法,在复杂机械产品设计类型和设计过程特征分析基础上,建立了复杂产品树状产品实例库,提出了基于模板的实例定制方法,给出了二阶段实例检索策略及相应算法,实现了3D实例模型的快速预览,并开发了基于实例推理的起重机产品设计原型系统。