关键词: 航空发动机;机载自适应模型~+;卡尔曼滤波;状态变量模型~+;推力控制

Abstract: Aero-engine performance is subject to degradation over the engine’s service life.The thrust that the deteriorated engine produces may not meet the demand of the aircraft by traditional engine control technology.On-board adaptive model can predict the deterioration parameters by Kalman filter and trim the on-board model to match the actual engine.The adaptive model was developed.Its calculated thrust was added to the closed control loop as virtual measurement to form the direct thrust control technology.Simulation results are presented to show that the on-board adaptive model can predict the thrust accurately whether the engine is in its nominal or deteriorated situation.The adverse effect caused by performance deterioration can be overcome by aero-engine direct thrust control.

Key words: Aircraft engine;On-board adaptive model;Kalman filtering;State variable model~+;Thrust control