Research On Product Design Reuse Based On Knowledge Planning

Product design was the key link of product development.Nowadays,the market was more and more in pursuit of short delivery time,and rapid response to the customers' needs is the key to take over the market initiative.In the process of product design,knowledge reuse was of great significance in the process of product design,because more than half of the design knowledge was existing.However,the research of design knowledge reuse was mainly focused on the representation and modeling of design knowledge.In this paper,product design reuse based on knowledge planning was proposed under the environment of mass customization,and the knowledge planning system for product design was studied,and a comprehensive model of knowledge planning was built.What's more,the reuse of explicit knowledge and tacit knowledge and their influence factors was studied based on the model.And then based on knowledge reuse,how to configure the product better is studied.This paper made a detailed study on the following aspects:(1)The knowledge planning system for product design was studied,and the content and characteristics of product design knowledge was introduced.The knowledge in different stages of product design was divided into different classifications.The idea of knowledge planning were discussed systematically,and a knowledge planning integrated information model was established.The design knowledge was comprehensive expressed from the horizontal and vertical two different dimensions.(2)The reuse of explicit knowledge is studied with the examples of existing instances.Put the performance of the product as a starting point,the method of fuzzy clustering is used to classify the existing instances and the similarity calculation method is used to find which product was similar to customers' requirement and the decision-making feedback(DFE)method is used to optimize the final reuse scheme.At last,the feasibility of the proposed method is verified by an example.(3)The acquisition and reuse of tacit knowledge was studied by customer demand –driven and the product design process was subdivided.Customers' tacit knowledge was obtained by using the existing media technology.Applying the gray relational method to analyze the importance of customers' demands,so as to determine the product design center of gravity.(4)Product configuration is studied based on the research of knowledge reuse.The customers' needs were translated into configuration requirements by the method of QFD,which as the pretreatment of SOM neural network input to get customer-oriented products through the classification of the SOM neural network model,so as to better configure the product.At last,an example was given to verify the effectiveness of the method.