Fuzzy Internal Model Control & Its Application To An Electrical Heating Furnace With Dead Time

Aimed at solve the problem of dead time system control, this paper proposed a method that utilized internal model control and fuzzy control together to get a better performance. The scheme was realized based on programmable logical computer and was applied to a electrical heating furnace with dead time. Study show better results could be achieved compared to common control methods in the face of dead time system and could be widely used in industry process.The main contents of this paper are as follows:Theoretical achievements:To the questions of advantages and disadvantages of fuzzy control and internal model control, this paper proposed a hybrid scheme combine the fuzzy control and internal model control. Furthermore, the feasibility of this scheme was demonstrated by stability analysis of fuzzy control and advantages of internal model control. Then provide the simulation results of MATLAB.Practical developments:Realized the design of discrete internal model controller and fuzzy controller based on programmable logic computer(PLC). Subsequently applied this scheme to a dead time electrical heating furnace and got better control results compared to original common control schemes. And some experiences of realize of advantage control is accumulated.