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首页> 外文期刊>Mathematical Problems in Engineering >Nonlinear Disturbance-Observer-Based Sliding Mode Control for Flexible Air-Breathing Hypersonic Vehicles
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Nonlinear Disturbance-Observer-Based Sliding Mode Control for Flexible Air-Breathing Hypersonic Vehicles

机译：基于非线性扰动观测器的滑行控制的超音速飞行器

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摘要

This paper investigates a tracking problem for flexible air-breathing hypersonic vehicles (FAHVs) with composite disturbance. The composite disturbance produced by flexible effects, parameter uncertainties, and external interferences is modeled as a kind of unknown derivative-bounded disturbance in this paper. Then a novel composite control strategy is presented for the nonlinear FAHV model with the composite disturbance, which combines a nonlinear disturbance-observer-based compensator (NDOBC) and a dynamic-inversion-based sliding mode controller (DIBSMC). Specifically, the NDOBC is constructed to estimate and compensate for the composite disturbance, and the DIBSMC is designed to track desired trajectories of velocity and flight path angle. Moreover, the uniformly ultimate boundedness of the composite system can be guaranteed by using Lyapunov theory. Finally, simulation results on a full nonlinear model of FAHVs demonstrate that the proposed nonlinear disturbance-observer-based sliding mode controller is more effective than the traditional DIBSMC. Specifically, it is shown that the chattering of traditional DIBSMC in presence of composite disturbances can be attenuated with the NDOBC.
机译：本文研究了具有复合扰动的柔性呼吸超音速飞行器（FAHV）的跟踪问题。由柔性效应，参数不确定性和外部干扰产生的复合扰动被建模为一种未知的导数有界扰动。然后提出了一种基于复合扰动的非线性FAHV模型的新型复合控制策略，该策略结合了基于非线性扰动观测器的补偿器（NDOBC）和基于动态反转的滑模控制器（DIBSMC）。具体而言，NDOBC构造为估计和补偿复合扰动，而DIBSMC则设计为跟踪速度和飞行路径角度的所需轨迹。此外，使用李雅普诺夫理论可以保证复合系统的一致极限极限。最后，在FAHV的完全非线性模型上的仿真结果表明，所提出的基于非线性干扰观测器的滑模控制器比传统的DIBSMC更有效。具体而言，显示出在复合干扰存在下传统DIBSMC的颤振可以通过NDOBC减弱。

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  • 来源
    《Mathematical Problems in Engineering》 |2015年第9期|675659.1-675659.15|共15页
  • 作者

    Wang Na; Yao Xiu-Ming; Li Wen-Shuo;

  • 作者单位

    Beihang Univ, Sch Instrumentat Sci & Optoelect Engn, Beijing 100191, Peoples R China.;

    Beihang Univ, Natl Key Lab Aircraft Control Technol, Beijing 100191, Peoples R China.;

    Beihang Univ, Sch Automat Sci & Elect Engn, Beijing 100191, Peoples R China.;

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