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Predictive Sliding Mode Control for Attitude Tracking of Hypersonic Vehicles Using Fuzzy Disturbance Observer

机译:基于模糊扰动观测器的超音速飞行器姿态跟踪预测滑模控制

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摘要

We propose a predictive sliding mode control (PSMC) scheme for attitude control of hypersonic vehicle (HV) with system uncertainties and external disturbances based on an improved fuzzy disturbance observer (IFDO). First, for a class of uncertain affine nonlinear systems with system uncertainties and external disturbances, we propose a predictive slidingmode control based on fuzzy disturbance observer (FDO-PSMC), which is used to estimate the composite disturbances containing system uncertainties and external disturbances. Afterward, to enhance the composite disturbances rejection performance, an improved FDO-PSMC (IFDO-PSMC) is proposed by incorporating a hyperbolic tangent function with FDO to compensate for the approximate error of FDO. Finally, considering the actuator dynamics, the proposed IFDO-PSMC is applied to attitude control system design for HV to track the guidance commands with high precision and strong robustness. Simulation results demonstrate the effectiveness and robustness of the proposed attitude control scheme.
机译:我们提出了一种基于改进的模糊扰动观测器(IFDO)的具有系统不确定性和外部扰动的超音速飞行器(HV)姿态控制的预测滑模控制(PSMC)方案。首先,针对一类具有系统不确定性和外部干扰的不确定仿射非线性系统,提出了一种基于模糊干扰观测器(FDO-PSMC)的预测滑模控制,用于估计包含系统不确定性和外部干扰的复合干扰。然后,为提高复合材料的抗干扰性能,提出了一种改进的FDO-PSMC(IFDO-PSMC),该方法通过将双曲正切函数与FDO合并以补偿FDO的近似误差。最后,考虑到执行器的动力学特性,将所提出的IFDO-PSMC应用于HV姿态控制系统设计中,以高精度和强鲁棒性跟踪指令。仿真结果证明了所提出的姿态控制方案的有效性和鲁棒性。

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  • 来源
    《Mathematical Problems in Engineering》 |2015年第2期|727162.1-727162.13|共13页
  • 作者单位

    Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Hunan, Peoples R China.;

    Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Hunan, Peoples R China.;

    Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Hunan, Peoples R China.;

    Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Hunan, Peoples R China.;

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