Simulation of Furnace Cascade PID Control System Based on Matlab / Simulink

Cascade control system has better anti-interference ability, quickness, flexibility and quality control, so it is widely used in complex process control. Furnace temperature is primarily regulated by the gas flow control. The furnace control system has larger capacity lags and suite for cascade PID control. However, traditional parameters tuning method of controller can only meet either of the target tracking and disturbance rejection. In this paper, using off-line PID parameter selection methods, the main loop and subloop of furnace cascade control system have been designed and simulation of the cascade PID control system has been done based on Matlab / Simulink. The results show that the system has excellent control accuracy and stability.