Construction and application of smart factory digital twin system based on DTME

Many enterprises have built their own digital twin factory model for physical factory planning, simulation optimization, and real-time monitoring. However, the digital twin system (DTS), which has a single domain, short time cycle, and unfulfillable services, cannot fully reflect the interaction and integration of the physical and informational world required by smart manufacturing. Therefore, research on the smart factory DTS (SFDTS) construction and application with cross-domain, multiple models have important influence on smart manufacturing. Given the above problems, this paper proposes the concept and composition of a digital twin manufacturing ecosystem (DTME) based on the requirements and characteristics of the product life cycle. It analyzes the construction requirements of the DTME for a factory DTS(FDTS), product DTS(PDTS), and supply chain DTS(SCDTS) from the perspective of the life cycle. Finally, the smart factory DTS architecture is applied to the digital and intelligent upgrading of the hydraulic cylinder factory. The experimental results reveal the intelligent improvement of the hydraulic factory, reduction of work-in-progress inventory, and advance of delivery time, proving the feasibility and effectiveness of the SFDTS.