高超声速飞行器弹性自适应控制方法

A novel resilient adaptive control scheme for hypersonic vehicles

针对参数不确定情况下高超声速飞行器的控制问题,提出了一种弹性自适应控制方法。给出了高超声速纵向动力学模型,并对其进行反馈线性化处理,分析了参数不确定对线性化处理后的模型的影响。在此基础之上分两步进行了弹性自适应控制律的设计,基于自适应Backstepping控制方法设计了标称控制器,对所构造的李雅普诺夫函数进行分析,得到了最终控制器并证明了系统稳定性。最后与标准Backstepping控制方法进行了对比仿真实验,结果表明所提控制方法对参数不确定具有更好的适应能力。

This paper proposes a novel resilient adaptive control scheme for controlling hypersonic flying vehicles under parametric uncertainties. First,a typically longitudinal dynamic model on a hypersonic flying vehicle was provided,and feedback linearization was implemented. The effect of parametric uncertainties on the linearized model was analyzed. On the basis of the abovementioned actions,the resilient adaptive control law was designed in two steps. A nominal controller was designed using the adaptive backstepping control scheme,and the constructed Lyapunov function was analyzed. The final controller was obtained,and the system stability was verified. Finally,a simulative experiment was carried out,and the results were compared with those of the standard backstepping control method. The proposed control method presented better adaptive ability for parametric uncertainties than the standard control method.