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基于模糊前馈的ASV再入姿态的模糊鲁棒跟踪控制方法*

, PP. 732-739

Keywords: 空天飞行器(ASV),TS模糊模型,模糊前馈,跟踪控制,H∞指标

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Abstract:

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.

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