关键词: 产品数据管理, 编码管理, 中间件, 本体, 域空间

Abstract: To satisfy requirements on adaptability of Product Data Management (PDM) systems to heterogeneous coding rules and information exchange, ontology methodology and Web service technology were adopted to study and realized PDM-oriented product coding middleware. The increasingly complicated product data system requires more powerful description capability and cross-organizations' amalgamation and interoperability. To deal with this problem, an ontology-based coding meta-model was proposed, and correlations among code fields were discussed particularly. Furthermore, the idea of sequence value domain was defined to regulate the generation of sequence value. At the same time, key points underlying the system framework were explored, which included the concept of domain and a reclaimed strategy of trashed value according to the assembly code field. Index-based data access mechanism was used to guarantee the efficiency of the whole system. The rationale of the implemented framework was manifested by its successful application in a practical enterprise PDM system, Aerospace Vehicle Integrated Design Manufacture (AVIDM) 3.0.

Key words: product data management, coding management, middleware, ontology, domain