Research On The Key Technology Of Digital Twin Workshop Platform For Marine Diesel Engine Critical Parts

In the machining process of Marine diesel engine critical parts,the workshop digital technology and 3D virtual simulation technology have gradually been applied in enterprises.However,there are still "information islands" between each other,which will lead to problems such as information link faults to a certain extent,resulting in problems such as low production efficiency,uneven product quality,and low transparency in the production process during the manufacturing process.Therefore,in order to improve the efficiency and quality of product processing and reduce production energy consumption,the digital twin technology is adopted to control the machining process of marine diesel engine critical parts.The digital twin workshop platform for critical parts of marine diesel engines is built with the in-depth study of key technologies,such as the construction of the virtual workshop model,the dynamic control method of the machining quality,the method of online evaluation and optimization for the production efficiency and energy consumption and the system integration.With the help of the workshop data collection system,the workshop processing data collection is carried out,so as to realize the online monitoring,decision-making,optimization and simulation functions of the production workshop,and guide the actual production and processing of the key parts of the marine diesel engine.The specific research contents include:(1)According to the actual demand of Marine diesel engine critical parts machining process,the overall architecture of the digital twin workshop platform for critical parts of Marine diesel engine is established,and on this basis,the solution and supported functional modules of the platform are determined.(2)Based on the characteristics of workshop resources and station layout of the marine diesel engine physical processing workshop,the three-dimensional model of the virtual workshop is constructed.The process flow of the physical processing workshop is studied,and the digital twin model of the physical processing workshop for the critical parts of marine diesel engines is established through integration with the virtual workshop.(3)The processing quality control model of the Marine diesel engine critical parts based on digital twin is established by the analysis of the processing quality control of the critical parts of Marine diesel engine and digital twin technology.Tool life prediction algorithm,tool wear mathematical model and workpiece surface roughness mathematical model are established with the analysis of the tool life prediction model,tool wear and workpiece surface roughness prediction model,and intelligent optimization algorithm is established based on tool wear and surface roughness to control the processing parameters of the workpiece and realize the control of the processing quality of the workpiece.(4)According to the actual processing efficiency and energy consumption requirements of marine diesel engines critical parts,the online evaluation method of production efficiency and carbon emissions of marine diesel engines critical is studied Based on digital twin technology,the digital twin model for cutting parameters online decision-making optimization is constructed.The mathematical model of processing production efficiency and carbon emissions are established,which is integrated with an improved genetic algorithm and particle swarm optimization algorithm to achieve online optimization of cutting parameters.(5)Based on the above research work,the platform software is selected.The Internet of Things 3D visualization Paa S platform-Thing JS and Visio Studio 2017 integrated development platform are used to build a virtual workshop and workshop service system.SQL Server 2008 is used to build the twin workshop database.MATLAB 2016 a is used to write and design intelligent algorithms.The digital twin workshop platform is built through the integration of the database,virtual workshop,workshop service system,etc.,and the feasibility and reliability are verified with the help of example simulation.