Design And Research Of Mould Oscillation Control System Based On Predictive Fuzzy Pid

With the rapid development of the continuous casting industry,the requirements for the surface quality of the billet have also been increasing.Mould is an important equipment in the continuous casting process,the quality of billet can be improved by the precise control of mould displacement.This thesis takes the mould oscillation control system in the billet continuous casting equipment exported to Indonesia from a research institute as the research object,and designs a control scheme that satisfies the crystallizer vibration precision index.In this thesis,the structure and working principle of the mould oscillation system are introduced,the mathematical model of the mould oscillation hydraulic servo system is established based on the parameters of the main hydraulic components of the system;The existing control system has the problems of displacement tracking delay and low amplitude accuracy.Based on the principle of fuzzy control and predictive control,a predictive fuzzy PID controller is designed to control the mould operating process parameters.The hardware configuration of the mould oscillation control system is studied,and the PLC control program of the slave computer and the monitoring interface of the host computer are designed,and the PLC program is compiled to realize the functions of quantification,fuzzification and anti-fuzzy to achieve the function of predictive fuzzy control.Verified by MATLAB/Simulink simulation,the predictive fuzzy PID controller can improve the response and steady state performance than PID controller and fuzzy adaptive PID controller.The designed control system has better control effect and stronger practicality and satisfy the billet continuous casting process requirements.