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Modelling and control of an anfis temperature controller for plastic extrusion process

This paper develops a ANFIS controller design method for temperature control in plastic extrusion system. The plastic extrusion process control system uses first order transfer function. Plastic extrusion system is generally nonlinear and the temperature of the plastic extrusion system may vary over a wide range subjected to various disturbances. The plastic extrusion system compresses of couple effects, long delay time and large time constants. The system designed with three different control techniques to control temperature at different set point changes and as well as to control sudden input disturbances. To design a controller it must be first tuned to the system. The tuning synchronizes the controller to the controlled variable and make the process to work at its desired operating condition. The Software incorporates LabVIEW graphical programming language and Matlab toolbox to design temperature control in plastic extrusion system. In this research the control methods are simulated using simulink and results obtained through LabVIEW. Relatively ANFIS controller gives best performance than Fuzzy logic and PID controller. The results indicate that the proposed algorithm significantly improves the performance of the temperature control in plastic extrusion system.