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提出一种模糊鲁棒跟踪控制方法,并应用于研究空天飞行器(ASV)再入段姿态角的跟踪问题.基于 ASV再入段存在外界干扰的不确定姿态动态系统的 T-S 模糊模型,考查姿态角跟踪参考信号的跟踪误差,引入模糊前馈,得出跟踪误差指数稳定的约束条件.并在镇定控制是前馈控制的先决条件的前提下,研究模糊前馈跟踪控制器和具有极点约束的 H_∞模糊镇定控制器的设计问题,基于 Matlab 的线性矩阵不等式(LMI)和模糊逻辑控制(FLC)工具可实现此问题的求解.仿真结果验证本文算法的有效性.
This paper presents a fuzzy robust tracking control method and its application in tracking the attitude angle of the ASV reentry section.Based on the TS fuzzy model of the uncertain dynamic system with external disturbances in the ASV reentry section, The tracking error of the tracking reference signal is introduced and the fuzzy feedforward is introduced to obtain the constraint condition that the tracking error is exponentially stable.Under the premise that the stabilization control is a precondition of feedforward control, the fuzzy feedforward tracking controller and the pole-constrained The design of H_∞ fuzzy stabilization controller and the linear matrix inequality (LMI) and fuzzy logic control (FLC) based on Matlab can solve this problem. The simulation results verify the effectiveness of the proposed algorithm.