Design of Low NOx Emission Control Method in Aeroengine Transition State

Aiming at the low NOx emission control problem of the aeroengine in the transition state, from the perspective of control method, the performance index function was constructed according to the combustion mechanism of NOx generation and the fitting relationship between aerodynamic parameters inside the combustion chamber of the aeroengine and NOx generation. Pontryagin minimum principle was used to analyze and solve the performance index function. By designing the control law in the transition state, a control method for reducing NOx production was obtained. Through simulation, the control method can reduce the total NOx generation by 0.45% without affecting the thrust control requirements of the aeroengine.