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高超声速飞行器的干扰补偿Terminal滑模控制

, PP. 1454-1458

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Abstract:

研究了一种基于干扰补偿Terminal滑模的高超声速飞行器姿态控制方法.针对传统Terminal滑模控制存在的奇异问题,提出了一种简单的改进型Terminal滑模面,通过在平衡点附近从非线性滑模面切换至高增益线性滑模面,避免了控制奇异问题,同时保持了较高的收敛速度,并对改进Terminal滑模控制在干扰作用下的误差收敛特性进行了理论分析.为进一步提高控制的鲁棒性和控制精度,设计了扩张状态观测器对干扰进行估计和补偿.进行了六自由度数学仿真验证,仿真结果表明该方法可有效提高控制系统的控制性能和鲁棒性.

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