关键词: 数字工程, 基于模型的系统工程, 数字孪生, 体系工程, 知识图谱

Abstract: Digital engineering is considered as the extension of systems engineering in the digital age,which can effectively shorten the equipment development cycle,improve product quality,optimize engineering system and other advantages,and realize the paradigm change of equipment acquisition process from "text-centered" to "data-centered".To comprehensively and systematically analyze the development and research trends of digital engineering,CiteSpace econometric analysis was carried out on the literature related to "digital engineering" in the Web of Science database.The structure of research topics was examined from different perspectives,such as the number of published papers,the distribution of research areas and literature,the distribution of countries and institutions,the knowledge graph of author-institution collaboration,the knowledge graph of literature co-citation and the co-occurrence of keywords.The current situation,trends and hot spots in digital engineering research were analyzed using visual knowledge graphs.The analysis results indicated that digital engineering was multi-discipline and cross-field in character and its research as a whole was entering a period of rapid growth.The core authors were relatively scattered,and a number of digital engineering research groups were initially formed.The United States,the United Kingdom,Germany and other developed countries had invested heavily in research and achieved fruitful results,while China needed to strengthen the funding and strategic deployment of digital engineering research.From the perspective of evolving research trends,the focus of the digital engineering research would be on Model-Based Systems Engineering (MBSE),digital twin and other technical systems.Finally,a concluding summary pointing out the challenges faced by digital engineering and key directions for future development were conducted.

Key words: digital engineering, model-based systems engineering, digital twin, system engineering, knowledge graph