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弹道学报  2014 

制导炮弹离散自适应滑模控制器设计

Keywords: 制导炮弹,参数化不确定性,多变量系统,离散自适应滑模控制

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Abstract:

针对存在参数误差的制导炮弹,提出了一种离散自适应滑模控制器。考虑到制导炮弹姿态控制系统模型存在的非线性、耦合问题,基于反馈线性化方法将系统离散化,并设计了制导炮弹离散滑模控制器。为减小离散系统中与参数误差对应的准滑模切换带宽度,设计了带死区的参数自适应更新规律,利用李亚普诺夫理论证明了闭环不确定系统的稳定性,使得控制系统具有较强的鲁棒性。仿真结果表明,所设计的控制器能有效地处理含有较大程度气动不确定性的问题,具有较好的跟踪控制性能。

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