基于H_∞最优控制理论的高超声速飞机纵向逆控制

Longitudinal inversion control based on H_∞ optimal control theory for hypersonic vehicle

针对高超声速飞机复杂的气动特性以及不确定的非线性模型,提出了基于H∞最优控制理论的逆控制方法。该方法将H∞最优控制的鲁棒性能与动态逆控制的非线性解耦控制能力有机结合,能够在复杂的飞行条件下,实现对高超声速飞机高度非线性解耦控制;同时还能抑制模型参数变化的扰动,从而确保了高超声速飞机的纵向稳定性,改善了其纵向模态的飞行品质。通过仿真实验验证了该控制方法的有效性。

To the complicated aerodynamics characteristic and uncertainty non-linear model of hypersonic vehicle, an inversion control method based on H∞ optimal control method is proposed. This method combines the robustness of H∞ optimal control theory and non-linear decoupled control ability of the dynamic inversion control weft, so it is possible to achieve highly nonlinear decoupled control for hypersonic vehicle and restrain the effects of model parameters change in complicated flight conditions. Therefore, it can provide the longitudinal stability and improves longitudinal flight quality for hypersonic vehicle. Simulation studies demonstrate that the control method is efficient.