Abstract
针对再入飞行器，提出一类新型的简洁的指令滤波反步法，设计动态的状态反馈姿态控制器。所设计的指令滤波反步控制器中，构建积分滑模滤波器逼近虚拟控制输入及其导数，避免传统反步法中复杂的解析推导过程，解决传统反步法中“计算爆炸”问题。在闭环系统中，采用输入状态稳定性和非线性小增益定理分析并保证闭环系统的稳定性和状态信号的有界性。最后，在仿真中验证了所提出姿态控制方法的有效性。 A command filtered back-stepping technology is exploited and analyzed to design a dynamic state- feedback attitude controller for a generic reentry vehicle in the technical notes. In the underlying command filtered back-stepping controller, sliding-mode-based integral filters are introduced to estimate the virtual control terms and their derivatives, obviating the complex analytical compu-tation process, subsequently solving the problem of “explosion of computation” in traditional back-stepping approach. The stability analysis of the closed-loop system and the convergence of the aerodynamic angles are verified based on the input-to-state stability and small-gain theorem. Numerical simulations are included to demonstrate the effectiveness of the proposed control scheme.
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