【摘要】 研究了基于特征的智能产品建模系统的框架、工作机制及系统实现技术要点 .产品可以封装为包括几何形体信息、非几何属性信息及与产品相关知识等内容的对象 .特征建模是智能性建模方法 ,可将特征建模系统中的特征分为两类 :应用级特征和系统级特征 .应用级特征是面向应用领域的特征 ,它可由用户自行定义或扩充以符合用户的应用要求 ;系统级特征是由系统提供的低层次特征 .建模系统提供了利用系统级特征组建新的复合特征的函数方法更多还原

【Abstract】 This paper deals with the architecture, working mechanism of an intelligent feature\|based product modeling system and main technology for implementation. Product is encapsulated as an object composed of geometry information, non\|geometry attributes and knowledge relating to the product. Feature\|based modeling is an intelligent approach in modeling technology. Features in a feature\|based modeling system could be classified as application features and system features. Application features are application domain\|oriented, and can be defined or expanded by users to meet the application domain requirements. System features are low level normalized features provided by modeling core system. The modeling system provides the utility function for developing new complicated feature\|based combining system features.更多还原