The paper analyzes the reasons why the automatic air supply of a power plant unit can not be put into normal operation

and adopts the discrete control strategy of the corresponding relationship between the load instruction of the unit and the opening of the air supply motor blade

as the rough tone of air supply automatic control. As a feedforward fine-tuning strategy of air supply automatic control

the fuzzy control strategy of oxygen corresponding to the change of air supply flow is used to realize the automatic control of air supply. At the same time

the automatic control parameters of furnace negative pressure are optimized with the input of air supply. Finally

by tracking the control parameters

the automatic input of the air supply is realized

and the quality adjustment can meet the requirements of the unit operation.