Research And Implementation Of Ontology-based Product Design Knowledge Representation

Product design is a planning and decision-making process based on market demand, product features, principles and programs and technical parameters, different products due to its function, structure, purpose and working conditions of the different design requirements, design methods and procedures will be different. Nevertheless, the product design has its inherent rules and characteristics, which must meet some basic requirements common and follow some basic principles and procedures. Therefore, to a reasonable and rapid product design, it is necessary to carry out product design knowledge effective representation to facilitate fast and accurate search. There are two problems in research on knowledge representation of product design:First, there is a lack of the practice of the product design knowledge process representation; secondly, there is little research the description of the products between the different components of the knowledge. Ontology-based knowledge can formally define the knowledge of the field of product design, and describe the critical design knowledge on the product features in the product design process, the behavior of semantic relations. Combination ontology construction process is better able to complete the knowledge representation.This paper select product design knowledge as an object of study, aimed to explore an appropriate method of design knowledge representation. The study focus on the design of knowledge ontology representation based on OWL, to realize the Protege-based ontology modeling. That is, based on object-oriented design and UML (Unified Modeling Language), in the light of the IEEE SUO Working Group guidance ontology building process, using the representation language OWL semantic Web ontology Language, we carry out the multi-field of knowledge's ontology construction in product design, and finally we use Protege instance modeling, giving the design ontology to build the application example.This paper includes the classification of design knowledge and design knowledge modeling, and domain ontology construction, and verification of product design examples. Firstly, we have a review of the recent research findings on knowledge representation and ontology. Then on the theoretical basis, we explore the different stages of product design related to various types of design knowledge to be represented. Then, taking barrel as manufactured goods design example, we analyze the needs and modeling of knowledge representation ontology in barrel design, combined with "skeleton" and "seven-step method in the ontology engineering to determine the barrel knowledge ontology construction process. Then, following the ontology building process, we carry out the ontology construction of barrel, to express multi-fields and multi-source design knowledge in barrel design process, and verify that the ontological theory of the application to the design knowledge. Last, we do a summary about this research work, in order to make the most of the advantage of ontology in knowledge representation field, and solve problems in product design, knowledge representation, which is finally providing useful help to manufacturing product design knowledge representation.