Abstract: A digital twin-based modeling approach was innovatively introduced in robotic systems to promote the improvement of real-time simulation and monitoring of robots.On the Unity3D platform,the synchronized update of data and state was achieved by constructing a virtual twin model of a physical entity and establishing a communication connection,thus accurately realizing the virtual-reality mapping of the digital twin.After that,virtual scenes and motion simulation models were constructed and experimentally verified to demonstrate the efficiency and accuracy of the system. A digital twin system that implements robot motion simulation and state virtual-reality synchronization techniques,demonstrating the prospect and application value of digital twins in the field of robotics was presented by studies. The system is expected to optimize robot operations,improve machining quality,and increase the safety level of staff operations.

Key words: digital twinning, robot operation, real-time mapping, Unity3D, three-dimensional visualization monitoring