针对高超声速飞行器不确定性因素多、参数变化范围大的特点,将特征建模理论与多模型自适应控制方法相结合,设计了一种基于特征模型的鲁棒自适应控制方案。将飞行器的飞行包络划分为若干个子空间,基于对象特征模型分别设计各子空间的H∞鲁棒控制器,飞行过程中,通过在线辨识得到的特征模型参数对各子控制器进行平滑切换。该控制方案不但可以较好地解决高超声速飞行器的模型不确定性问题,而且基于特征模型设计得到的鲁棒控制器阶数较低,易于工程实现。 Aiming to the characteristics of hypersonic vehicle with many uncertainties and large range of parameters, a robust adaptive control scheme based on eigenmodel was designed by combining eigenmodeling theory and multi-model adaptive control method. The flight envelope of aircraft is divided into several subspaces. H∞ robust controller of each subspace is designed based on the object feature model. During the flight, the sub-controllers are switched smoothly by the characteristic model parameters identified online. The control scheme can not only solve the problem of model uncertainty of hypersonic vehicles well, but also obtain a lower order of robust controller based on the feature model, which is easy to implement.