Research And Application On Electric Simulation System Of Automobile Assembly Line

As a new method to improve the decision-making level of production in the automobile manufacturing industry,the simulation technology has played an increasingly important role.This paper focuses on the rapid modeling and simulation of automobile assembly line,and validates and optimizes the design scheme of the electric control system of the assembly workshop in the virtual environment.It aims to build a verification system for the PLC program of automobile assembly line.The main contents are as follows:(1)According to the production process of automobile assembly workshop,the characteristics of the PLC control system in automobile assembly line is analyzed,and the appropriate platform is selected to design the overall framework of simulation system.(2)The equipment used in the assembly workshop is classified according to their application and characteristics.On the base of the purpose of rapid modeling and simulation,the parametric modeling of equipment in assembly workshop of automobile production line is carried out on Autodesk Factory Design Suite software platform.And the modified entrance of key parameters and properties of equipment is also provided,such as the positioning surface and joints.Finally the model library for equipment of automobile assembly workshop is build.(3)The communication and control between virtual equipment and PLC equipment on Demo3 D platform is analyzed according to the requirements of validation of vehicle assembly plant PLC control system.According to the characteristics of the Demo3 D software platform,the sensor attributes and the corresponding device actions are added to the device.To achieve the effect of parameters conveniently adjustable,the entrance of key physical parameters modification is also provided.(4)In order to meet the requirements of simulation results analysis,a database of PLC simulation results is designed to collect the simulation process data.On the one hand,it can provide data for the simulation results analysis,on the other hand,it can also provide reference for the follow-up program optimization.(5)The application results of the simulation system are introduced and analyzed,including the electric control part,the structure and layout of the mechanical equipment,the tempo requirements of the control system,and the corresponding optimized plan for different problems are also formulated.