A High-End Equipment Real-Time Virtual-Real Interaction Implementation Based on Digital Twin

High-end equipment digital twin is a technology to realize the communication between the physical world, virtual world, and cyber world for high-end equipment. It is also an effective approach for environment perception, operation control and condition monitoring in the operation process of high-end equipment. Starting from the logic of actual operation, this paper investigates the construction of high-end equipment digital twin. Firstly, in view of complex working conditions, a method of collecting and integrating working condition data considering network fluctuations is proposed to transmit multi-source heterogeneous sensing data in real time. Meanwhile, the data driving digital twin model was proposed. The virtual entity was simplified through the edge and component collapse method. Also, the dynamic history database was constructed to realize the data-physical fusion driving for the virtual-real mirroring of the three-arm rock drilling platform. The prediction data error is less than 5% and the driving time is no more than 7.9 × 10–3 ms; Then, based on the interference detection technology, the digital twin data is transmitted online to control the physical entity through virtual model. The simulation frame rate of the developed digital twin system reaches 103.5 frames/second, and the feasibility of the digital twin virtual-real interaction method is verified through the test in the physical three-arm rock drilling platform.