产品结构管理 ( PSM)是 PDM系统的主要功能 ,但如何建立产品结构模型以实现对产品结构和设计过程的有效管理是 PDM的一个难点。本文以产品设计过程的 3个阶段 :概念设计、总体设计和详细设计为基础 ,对 PDM中的产品结构进行分析和建模 ,提出了具有 3个层次的产品结构模型 ,并对该模型进行了详细介绍 Product Structure Management (PSM) is the main function of PDM system, but how to build a product structure model to effectively manage the product structure and design process is a difficult point of PDM. Based on the conceptual design, overall design and detailed design, this paper analyzes and models the product structure in PDM, proposes a three-level product structure model, and makes the model Detailed introduction