Automatic generation of 2D surface topography specifications based on wed ontology language

An ontology-based automatic two-dimensional surface topography specification (TSTS) generation method was proposed to solve the problem of different designers’ different TSTS generation results and semantic interoperability during the process. According to the existing category model representing two-dimensional (2D) surface topography knowledge and the EXPRESS-language model representing Computer Aided Design (CAD) system extraction information, a knowledge representation model is constructed consisting of part surface layer, extraction information layer, TSTS information layer, and part information mapping layer. The part surface layer, extraction information layer, and 2D surface morphology feature information layer are constructed as meta-ontology using Web Ontology Language to reuse or inherit 2D surface morphology knowledge in specific fields. The part information mapping layer is represented by Semantic Web Rule Language (SWRL). Then, the meta-ontology and knowledge based on the SWRL representation are mapped to Java expert systems shell (JESS) facts and JESS rules, and the JESS inference machine is used to generate the TSTS.