In this paper, a variable weight SDRE (state-dependent Riccati equation) control algorithm is designed for the transition state process of aeroengine, which can take into account the thrust control and energy-saving target. Based on the aeroengine nonlinear model with nonlinear compensation, an aeroengine model with state-dependent coefficient matrix (SDC) is developed. The SDRE control algorithm is designed to control the aeroengine transition state for fuel consumption and response time. A variable weight cost function with coupled state variable weight coefficient is established, and a parameter optimization method based on genetic algorithm is designed to obtain the mapping relationship between the state variable and weight coefficient. The acceleration process of DGEN380 aeroengine is then simulated. Compare with the constant weight control method, the variable weight SDRE control method increases the adjustment time by 0.22 s and reduces the fuel consumption by 9% under certain working conditions. At the same time, the universality and robustness of the algorithm are tested by simulation. The simulation results show that the variable weight SDRE control algorithm can effectively achieve thrust control and energy-saving target during the transition state of aeroengine.
Design of variable weight SDRE control algorithm for civil aeroengine transition state
CEAS Aeronaut J
CEAS Aeronautical Journal ; 14 , 2 ; 343-352
2023-03-01
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch