Development Of Real-time Simulation Software For Melting Process Of Fused Magnesia Based On "End-edge-cloud"

Fused magnesia is an important strategic resource for manufacturing,metallurgy,chemical,electrical,aerospace and other industries.The equipment for producing fused magnesia is a three-phase AC fused magnesia furnace,which is a typical high-energy-consuming equipment.Its electrical energy cost accounts for more than 60%of the production cost.The current control system of the fused magnesium furnace controls the three-phase electrode current by adjusting the distance between the three-phase electrode and the liquid level of the molten pool,so that it is within the target range of the melting current and converts all the magnesite ore in the furnace into electricity.Molten magnesia.The energy consumption per ton of fused magnesia is the energy consumption per ton.Depending on the melting current,stably controlling the threephase electrode current within the allowable range of the optimal melting current is the key to reducing the energy consumption of fused magnesia products.Because the melting temperature of fused magnesia is as high as about three thousand degrees,submerged arc is used for smelting.Its melting characteristics change with the melting process.It is difficult to control the current within the allowable range of the optimal melting current using existing control methods.In order to study high-performance current control algorithms,it is necessary to establish a simulation model that accurately reflects the dynamic characteristics of the actual smelting process and perform real-time simulation.The melting process of each furnace is up to ten hours.It is necessary to use the input and output real-time data of the melting process to establish a current model that reflects the entire melting process.It is necessary to develop realtime simulation software for the melting process.Under the funding of the Natural Science Foundation’s key project "Design Methods and Application Research of Process Automation Optimized Control and Safe Operation Knowledge Automation System",based on the "end-edge-cloud" collaborative thinking,a realtime simulation of the fused magnesia smelting process was developed.The software,combined with the fused magnesia semi-physical simulation platform,uses the input and output data of the melting process to realize the online correction and real-time simulation of the current model of the entire melting process.The main work of this article is as follows:1.Aiming at the difficulty that conventional simulation systems can hardly use the input and output real-time data of the entire industrial process to realize the dynamic simulation of the entire industrial process,the "end-edge-cloud" collaborative thinking is used to design a real-time simulation software architecture for the fused magnesia smelting process.Among them,"Cloud" uses the input and output data of the entire melting process of several heats to realize cloud correction of the current model of the melting process,and "Edge" uses real-time data of the melting process of this heat to implement the edge correction of the current model,so that the current model can reflect the current time Dynamic characteristics of current change during smelting.The "end" uses the input and output real-time data of the current melting process to realize the real-time simulation of the current model,and monitors and evaluates the simulation effect.2.Real-time simulation software of fused magnesia smelting process is designed,which consists of cloud storage and management module,cloud-based model correction module based on big data,edge-end model correction module,model simulation and effect monitoring module.The cloud storage and management module is used to store the input and output data of the entire melting process collected in real time on the industrial site to a cloud database and implement cloud storage and management of current models and model correction algorithms.The cloud model correction module based on big data reads the input and output data of the entire smelting process from the cloud database to achieve cloud correction of the current model.The edge model correction module is used to read the real-time data of the melting process of this heat from the cloud database to achieve the edge correction of the current model.The model simulation and effect monitoring module uses the input and output real-time data of the current smelting process to realize the real-time simulation of the current model and the monitoring and evaluation of the simulation effect.3.Use HTML,Python,MATLAB,etc.to complete the development of simulation software."Cloud" and "side" modules use MariaDB database and Python to implement cloud storage and current model correction program development;"end" modules use Python+MATLAB to implement model real-time simulation program development,and use JQuery+Flask to implement model simulation effect monitoring And evaluation program development,use TCP socket to achieve data communication between "cloud-edge" and "edge-end".4.The experimental verification of the developed software is completed.The experimental verification of the developed real-time simulation software "cloud-edge" combined with model correction and the real-time simulation function of the current model at the "end" side was carried out.The experimental results show that the simulation software developed in this paper can be used to verify whether the current model can accurately reflect the dynamic characteristics of the current smelting process,and further verify the availability and effectiveness of real-time simulation software of fused magnesia smelting process based on"end-edge-cloud".