针对高速飞行器飞行参数强时变、模型不确定性大等问题,设计了一种基于特征模型的在线姿态控制方法。首先,对输入空间进行模糊划分,通过聚类分析得到多个局部空间,在各子空间分别辨识其相应的特征模型后获得飞行器的在线控制模型;然后,以此模型设计滑模变结构控制器;最后,仿真结果表明该方法能较理想的实现在线自适应控制,保证系统具有良好的鲁棒性,且控制器结构简单宜于工程实现。

Since that hypersonic vehicle has time-varying parameter and uncertainty of model, an online control method based on characteristic model was proposed. First, the input space was divided into many local subspaces by clustery analysis, and then the control-orient model was combined by characteristic model which was identified in those local subspaces. Secondly, the variable structure controller was designed. Finally, simulation results proved the capability of online controller and guaranteed the robustness of system, besides it can be implemented easily in engineering.