关键词: 数字孪生, 产品设计, 信息模型, 设计工作量预测

Abstract: To mitigate the complexity during product design caused by inconformity between reality and ideal design process,a digital twin-based product design process and the design effort prediction method was proposed.A product design digital twin system in five dimensions was constructed.The product design digital twin in virtual space was specifically defined,which included functional digital twin,designer digital twin and design activity digital twin.From a knowledge perspective,the prediction approach for product design effort and the propagation analysis approach for function changes were proposed,which was able to provide lean service for the management of complexity during product design.A case study of system design of a cube satellite-based radio aurora explorer mission showed that the proposed method could measure,predict and manage the complexity during product design effectively.

Key words: digital twin, product design, information modeling, design effort prediction