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针对存在未知气动参数的吸气式高超声速飞行器纵向运动控制问题,提出一种基于不变流形的自适应动态面控制方法.通过合理假设将高超声速飞行器纵向模型分解为弹道倾角回路和速度回路,分别实现对弹道倾角和速度参考指令的跟踪.弹道倾角回路被表达为严反馈形式进行控制器设计.采用基于不变流形的自适应方法实现了对未知参数的估计.所提出的自适应动态面控制方案能保证未知参数估计误差全局一致稳定和闭环系统全局有界稳定,且估计器和控制器设计不存在耦合,因此参数设计更加容易.仿真结果验证了该控制方法在参数估计方面的显著优势和良好的闭环系统性能.
Aiming at the problem of longitudinal motion control of an aspirated hypersonic vehicle with unknown aerodynamic parameters, an adaptive dynamic surface control method based on invariant manifold is proposed. By reasonably assuming the hypersonic longitudinal model is decomposed into ballistic and velocity loops , Respectively, to track the trajectory inclination and speed reference commands.The ballistic inclination loop is expressed as a strict feedback form controller design.Using the invariant manifold based adaptive method to realize the unknown parameter estimation.The proposed adaptive The dynamic surface control scheme can guarantee the global stability of the unknown parameter estimation error and the global bounded stability of the closed-loop system, and there is no coupling between the estimator and the controller design, so the parameter design is easier. Simulation results verify that the proposed control method Significant advantages and good closed-loop system performance.