基于反步滑模方法的高速飞行器动压控制

Dynamic Pressure Control of High Speed Aircraft Based onBackstepping Sliding Mode Method

以吸气式高速飞行器为研究对象,针对高速飞行器在飞行过程中存在的大不确定性以及冲压发动机工作过程中对动压的严格约束问题,提出了一种基于反步滑模的动压控制方法。首先对高速飞行器动力学模型进行精确线性化处理,然后基于精确线性化模型,设计反步滑模控制器,并通过Lyapunov稳定性理论证明了闭环系统的稳定性。最后仿真验证了所提控制方法在大干扰和大不确定性情况下对飞行动压的精确跟踪,确保了冲压发动机的稳定工作。

The research of air-breathing high speed aircraft is focused.Aiming at the high speed aircraft in the flight process of the great uncertainty and stamping engine dynamic pressure control method based on backstepping sliding mode is proposed to solve the problem of strict constraint on dynamic pressure during operation.Firstly,the precise linearization of the dynamics model of high speed aircraft is implemented,then based on the exact linearization model,the backstepping sliding mode controller is designed and the stability of the closed-loop system is proved by Lyapunov stability theory.Finally,the simulation verified that the proposed control method can accurately track the flight pressure in the case of large disturbance and large uncertainty and the stable operation of the ramjet is ensured.