Research On Fuzzy Control In The Oxygen Of Boiler Flue Gas Control System

This article studies the application of fuzzy adaptive PID control for the oxygen thickness in the flue gas. Simulation is used to test the control system.In order to improve the control effect, the controller is analyzed further in this article. On the basis of traditional PID algorithm, summarize the engineering designer’s technological knowledge and operational experience. Set up suitable fuzzy control regular form, and has gotten directly against Kp, Ki, Kd fuzzy control form. Design another controller-fuzzy adaptive PID controller based on fuzzy control theory.This article uses fuzzy logic toolbox and Simulink of MATLAB for simulation research. By simulation, analysis and comparison with PID control, and fuzzy adaptive PID control of oxygen thickness in the flue gas, the results show that step response curve of the fuzzy adaptive PID controller has the advantages of rising quickly, high adjusting precision and good stabilization, short transition time and small overshoot. This is difficult for PID control to realize. For these reasons the fuzzy adaptive PID controller is feasible and effective. The controller’s self-adjusting for the parameter can be realized, and its performance is better than tranditional PID controller. It may effectively reduce the coal consumption rate for the power supply of boiler in unit running. These advantages have important guiding significance of theoretical and practical research.