Research On Digital Twin Simulation Technology For Ship Motion Attitude Control System

Ship navigation attitude control is a relatively complicated problem in the field of ship control,and its control effect directly affects the ship’s navigation safety and operation accuracy.However,in the process of theoretical research and experimental simulation of ship navigation attitude control algorithms,the lack of physical simulation conditions makes it impossible to intuitively feel the maneuverability of ship navigation under the corresponding control strategy.Even with the physical simulation conditions,it cannot be separated from the on-site debugging of the actual project.Therefore,it is of great significance to construct a virtual simulation platform to synchronize the state with remote physical simulation equipment.Based on the five-dimensional digital twin model,this paper uses the Unreal Engine 5 platform and Web development technology to research and design a digital twin simulation system for ship navigation attitude control.The main contents are as follows:First,clarify the functional requirements of the digital twin simulation system and design the overall framework structure of the digital twin system.The plan is designed based on the digital twin five-dimensional model architecture,which mainly includes a ship physical simulation platform,a digital twin virtual simulation platform,and a digital twin server.The design of the interaction scheme and the connection network architecture of the digital twin system.Second,build a digital twin simulation environment and model,and build a ship physics simulation platform and a virtual simulation platform.Use Unreal Engine 5 to modulate the material and texture of the ship model,design the multi-degree-of-freedom motion of the ship and the drive interface of fins,propellers,propellers and other devices.Based on the characteristics of the physical environment,a virtual scene is built.Nanite technology is used to process the LOD level of the model to ensure the visual accuracy of the model during the process of model reduction.Optimize the virtual scene through Lumen technology,improve the picture quality of the digital twin virtual scene,increase the speed of scene lighting rendering,and reduce GPU loss.Then,construct the digital twin system data real-time communication network architecture,design and implement network communication modules such as data interaction platform,cloud server,database,and client.Research on moving average filtering and adaptive data acquisition methods to optimize the data real-time communication network architecture.Finally,the virtual reality technology is applied to the twin virtual scene of the ship to realize the functions of interactive interface design,roaming movement,three-dimensional visualization,data curve drawing,and motion simulation.Based on the virtual reality interaction mode,a multi-person interaction network architecture is created,and user permissions and data synchronization in the multi-person interaction system are set.The system service management platform is developed based on Web technology to realize simulation data management,physical equipment monitoring and remote control.Based on two different interaction methods,carry out the verification experiment research on the digital twin simulation system.