Design And Simulation Of Steel Plate Color Printing Tension Control System

With the improvement of people’s lives,people’s quality requirements for life are getting higher and higher.Steel plate color printing technology is also widely used in various fields,Wide range of applications in household appliances,building facades,billboards,and floor coverings.The color printing plate mainly uses the overprinting process,which is developed on the basis of monochrome engraving.It is different from overprinting and trapping.Overprinting requires that each swatch pattern be accurately stitched together to form a complete pattern.Therefore,the process requires very high accuracy for the system.In the production of printing,it is necessary to control the tension of the coil with high precision,reduce the fluctuation of the tension of the coil,and improve the quality of printing.However,there are nonlinear,time-varying,strong-coupling,and uncertain relationships between the various parameters of the tension control system.In the printing,misprinting may occur due to the tension deviation,so that the printing is unclear or the printing is ghosted.Traditional PID control is difficult to achieve high speed and high precision requirements.The material of the steel plate is special,its ductility and toughness are different from ordinary paper and yarn.Therefore,increasing the research on the tension control of the steel plate color printing machine will further reduce the cost and improve the efficiency.This thesis is based on the fuzzy control algorithm,which is characterized by the timevarying and multi-interference of tension during winding and unwinding during the process of steel plate printing.The system based on fuzzy variable structure control is designed.The feasibility and superiority of the proposed algorithm are verified by computer simulation and hardware platform of tension control system.The paper is mainly composed of the following parts:Firstly,the accurate tension model is obtained.The paper uses methods to Establish mathematical model of tension,retracting reel and servo motor.The factors affecting the tension change during the winding process are analyzed.The advantages and disadvantages of several tension control methods are compared and analyzed,and an indirect-direct composite control method is adopted.In the tension phase,the current and speed double closed loop PI control is used to achieve rapid tension establishment.When the tension tends to be given.Secondly,analyzes its characteristics and scope of application.The design content and design method of fuzzy control system are summarized.Based on the inadequacies of PID control,a fuzzy PID controller is designed by combining PID control technology with fuzzy control.Third,In the simulation environment of Matlab/Simulink,the simulation model of AC servo control system is established.The tracking performance and robustness of the control algorithm are simulated and the simulation results are analyzed.The simulation results show that the controller based on fuzzy PID has fast response speed,high control precision,can weaken the jitter oscillation,and can maintain the robustness of sliding mode variable structure control.Last,The hardware and software of the continuous pad dyeing machine tension control system were studied.The hardware structure and the superior software monitoring system are designed to achieve good control effects.Indicates that The fuzzy control system proposed in this paper has good stability and high precision,and can effectively suppress the tension fluctuation caused by internal and external interference.The designed monitoring system has good human-computer interaction,which improves production efficiency,reduces defective rate and improves equipment operation.