关键词: 产品设计, 概念设计, 案例推理, 案例决策

Abstract: To improve product conceptual design efficiency and design the products satisfying the users requirements, a product conceptual design method based on Case-Based Decision Theory (CBD) was proposed. This method continued to use the thoughts of solving new problems by experience in Case-Based Reasoning (CBR)，and the cyclic design process with user feedback was presented. This method was human-centered, which classified the case base according to the index rules and k-means clustering algorithm and translated users valuation into the utility of every cluster of cases. The design solution of the optimal cluster was gradually refined through the cyclic iteration until the design requirements and goal were achieved. Application process and procedure of the proposed method were explained by a case of motorcycle product design.

Key words: product design, conceptual design, case-based reasoning, case-based decision, motorcycles