Study on Knowledge Integration Model for Parametric Design

In order to improve parametric design process efficiency, design product is layer-by-layer decomposed into design unit according to the functional, and the design unit is looked as the carrier of knowledge and the object of parameter driving.In order to describe the product structure and integrate design knowledge, PS hierarchical structure model and integrated design information model are established.Based on the product information model, put forward the product parametric design steps.In order to be clear, an example of double eccentric butterfly valve parametric design is provided.