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一种基于反步法的鲁棒自适应终端滑模控制
  • 期刊名称:控制理论与应用
  • 时间:0
  • 分类:TP273[自动化与计算机技术—控制科学与工程;自动化与计算机技术—检测技术与自动化装置]
  • 作者机构:[1]南京航空航天大学自动化学院,江苏南京210016
  • 相关基金:国家自然科学基金资助项目(90405011,90716028).
  • 相关项目:近空间飞行器结构/气动/飞行集成一体化飞控系统的强鲁棒稳定智能自主控制研究
中文摘要:

针对不确定严格反馈块控非线性系统,提出了一种基于反步法的鲁棒白适应终端滑模变结构控制方法.系统的未知不确定及外界干扰由模糊系统在线逼近,利用反步法设计了变结构控制的终端滑模面,并由此得到了鲁棒自适应终端滑模控制器,使系统的跟踪误差在有限时间内趋于给定轨迹的任意小的邻域内.通过Lyapunov定理证明了闭环系统所有信号最终有界.对某战斗机6自由度机动仿真结果表明,该方法具有强鲁棒性.

英文摘要:

A robust and adaptive terminal sliding mode control based on backstepping is presented for a general class of strict-block-feedback systems with uncertainties. Fuzzy logic systems are employed to compensate for the unknown uncertainties in the system. Adaptive backstepping method is then used to design the terminal sliding surface. A robust and adaptive variable-structure controller is thus obtained. The tracking error is driven onto the sliding surface and converges to an arbitrary small neighborhood of the desired trajectory in finite-time. Using the Lyapunov approach, we prove that all signals in the closed loop system are ultimately bounded. Finally, the simulation results of the nonlinear six-degree-offreedom maneuver flight of a fighter plane demonstrate that the proposed approach has strong robust performance.

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