多伴随矢量发动机直接推力控制方法OA

To address the requirements of modern aircraft for high maneuverability and strong countermeasure capa-bility in complex tactical environments,and resolve the drawbacks of low accuracy and slow response in conventional indirect thrust control of engines,this paper proposes a direct thrust control method for multi-companion vectoring en-gines.First,a nonlinear component-level model consisting of one main engine and two companion engines is estab-lished,with refined modeling conducted for key components such as the bleed air system.To achieve accurate esti-mation of engine thrust,an on-board adaptive model based on the Unscented Kalman Filter(UKF)is designed.This model incorporates a steady/dynamic discrimination logic to on-line identify the engine's performance degradation pa-rameters,thereby effectively suppressing the interference of flight dynamics on health assessment.On this basis,a data-driven Model-Free Adaptive Control(MFAC)strategy is further proposed,and a Multi-Input Multi-Output(MIMO)direct thrust controller is constructed to realize decoupled,rapid,and precise control of the thrust of the main and com-panion engines.Simulation results demonstrate that the designed on-board adaptive model can accurately track the actual state of the engine,and its thrust estimation results are highly consistent with the true values;the direct thrust controller responds rapidly,achieving stable and precise tracking of the commanded thrust under the conditions that the settling time of the main engine is less than 1 s and the overshoot is below 4%.This study provides an effective so-lution for the control system design of novel combined vectored-thrust engines and verifies the feasibility and potential of this scheme in improving engine control performance.