Optimized temperature controller for plastic injection molding system

Maintaining the barrel temperature leads to desired shape and structure in the plastic injection molding industry. The ON/OFF controllers used in industries for control of the barrel heating system; are not giving satisfactory performance. It consumes more power, and chattering which lead to wear out the relay quickly. These problems are overcome by introducing a model based PID controller. The mathematical model is obtained from the barrel heating system and ZN tuned PID controller and fuzzy tuned PID controller are simulated on the barrel heating system. The results show that fuzzy tuned PID gives good transient and regulatory performances compared to ZN tuned PID controller.