Key Words:
Digitalization, Digital Twin, Digital Triplet, Manufacturing System
Abstract:
Digitalization is eagerly required in all domains for increasing added value and decreasing costs including labor costs. This paper discusses digitalization in the domain of manufacturing systems.
Features of Japanese manufacturing style include high quality of products and continuous improvement of manufacturing systems. Both of them are driven by skilled workers and engineers, who are working together. Inappropriate digitalization may eliminate skilled workers and engineers and, as a result, the company cannot maintain the quality and cost-effectiveness of the product and high productivity of the manufacturing system. Moreover, the digitalization may bring about the stagnation of technological progress of the manufacturing system if the digitalization impedes the continuous improvement.
In order to avoid these problems, we have proposed the concept of Digital Triplet (D3), which records the process of problem-solving of skilled engineers, models the process, and reuses it. In addition to physical world and cyber world, which constitute the traditional digital twin, Digital Triple consists of intelligent activity world, where engineers solve problems using digital twin, in addition to the traditional digital twin.
This presentation introduces the concept of Digital Triplet with some cases we are dealing with and methods we are developing.
Prof. Yasushi Umeda is a Full Professor at Department of Precision Engineering, School of Engineering, the University of Tokyo, Japan. He holds BE, ME, and Dr. Eng. in Precision Machinery Engineering from the University of Tokyo. He authored/edited 29 books, over 150 peer-reviewed articles, and has 19 patents granted/pending. Five of his papers won best paper awards in scientific journals and international conferences. After receiving Dr. Eng. degree, he is appointed as a research associate at School of Engineering, the University of Tokyo in 1992, a lecturer in 1995, an associate professor at Department of Mechanical Engineering, Graduate School of Engineering, Tokyo Metropolitan University in 1999, and a professor at Department of Mechanical Engineering, Graduate School of Engineering, Osaka University in 2005. Since 2014, he serves as a professor at School of Engineering, the University of Tokyo.
He is a fellow of CIRP (International Academy for Production Engineering), a fellow of JSME (Japan Society of Mechanical Engineers), a director of JSPE (Japan Society for Precision Engineering), a member of ASME (American Society of Mechanical Engineers), ILCAJ (the Institute of Life Cycle Assessment, Japan), JSER (Japan Society of Energy and Resources), and JSDE (Japan Society for Design Engineering).
His research interests include circular economy, smart manufacturing systems, life cycle engineering, eco-design, sustainability science, and design theory.