考虑扰动的欠驱动船舶轨迹跟踪自适应滑模控制

上传者: alkaid_miao | 上传时间: 2022-04-19 10:05:35 | 文件大小: 5.71MB | 文件类型: ZIP
摘要:近年来,随着欠驱动系统控制技术的快速发展以及船舶智能化要求的不断增加,欠驱动船舶控制问题受到越来越广泛的关注。本课题结合backstepping设计方法、滑模控制算法、参数自适应方法、动态面控制技术、神经网络以及低频增益学习等先进控制理论,考虑欠驱动船舶存在外界环境干扰、模型不确定、速度不可测情况,提出欠驱动船舶轨迹跟踪状态反馈与输出反馈自适应滑模控制策略。首先,以船舶模型已知为前提,考虑干扰界已知和界未知两种情况下的船舶轨迹跟踪问题,对外界环境干扰界已知情况,结合backstepping设计方法与滑模控制算法,设计船舶轨迹跟踪滑模控制律;进一步,对外界环境干扰界未知情况,设计带有σ-修正的参数自适应律估计外界环境干扰的界值,并引入双曲正切函数消除因符号函数引入带来的“抖振”问题。其次,针对船舶存在模型不确定项与未知环境干扰的轨迹跟踪控制问题,将动态面控制技术、自适应神经网络、滑模控制算法与backstepping设计方法相结合,设计一种基于神经网络的船舶轨迹跟踪自适应滑模控制律。 介绍:资源包含相关文献和可运行的matlab程序,仅供参考。

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