To solve the problems of poor integration of business systems

opaque assembly process

and untimely exceptions handling

an aircraft assembly line digital twin system for layered and transparent supervisory control is proposed. After the requirements analysis

a four-tier architecture is proposed

namely physical layer

twin data layer

twin model layer and application layer. And three core functional modules are designed and implemented

including twin database construction for multi-dimensional data integration

final assembly lines digital twin modeling for transparency and visualization

integrated hierarchical supervisory control for on-site exception handling. The practical application shows that proposed system meets the requirements of multi-level

multi-dimensional

multi-role distribution remote supervisory control and comprehensive analysis

and effectively improves the digital and transparent level of aircraft final assembly.