Fan flue gas temperature control system based on fuzzy PID control

Due to the complex process of flue gas acid production and numerous processes, the controlled objects in the whole process have the characteristics of time-variation, randomness, nonlinearity and large lag. For SO2 fan, because the traditional PID control adopts the parameters set in advance, it is difficult to play an effective role in the complex flue gas acid production system, therefore, a fuzzy PID control method is proposed. The two-dimensional structure fuzzy controller model with two inputs and three outputs can dynamically adjust the PID controller parameters. By establishing a transfer function model for factory temperature data, we compare the fuzzy PID control with the traditional PID controller. The results demonstrate that the fuzzy PID controller possesses strong anti-interference ability, has a shorter adjustment time, and exhibits a smaller overshoot volume, which enables more effective control of the fan outlet temperature.