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由于燃料消耗和柔性部件展开等原因,挠性航天器的姿态动力学方程存在着参数的不确定性,因此,研究参数不确定TS模糊系统的鲁棒控制器设计方法,并将其应用到平面机动挠性航天器的姿态机动控制问题。将参数不确定TS模糊系统描述为TS模糊区域模型,根据PDC原理设计了模糊区域控制器,并用分段Lyapunov法证明了模糊控制系统的全局渐近稳定性。将平面机动挠性航天器姿态动力学方程描述为参数不确定TS模糊区域模型,在此基础上设计了模糊区域控制器,进行了数值仿真分析。仿真结果表明,TS模糊区域控制器具有很强的鲁棒性,可以实现挠性航天器的高精度姿态控制和振动抑制。
Due to the fuel consumption and the deployment of flexible components, the attitude dynamics equations of flexible spacecraft have parameter uncertainties. Therefore, the robust controller design method for TS fuzzy systems with uncertain parameters is studied and applied to the plane Maneuvering Flexible Spacecraft Attitude Maneuvering Control Problem. The TS fuzzy system with uncertain parameters is described as TS fuzzy region model, and the fuzzy region controller is designed according to PDC principle. The global asymptotic stability of fuzzy control system is proved by the piecewise Lyapunov method. The attitude dynamic equation of planar flexible spacecraft is described as the TS fuzzy region model with uncertain parameters. Based on this, the fuzzy region controller is designed and the numerical simulation is carried out. The simulation results show that TS fuzzy controller has strong robustness and can achieve high-precision attitude control and vibration suppression of flexible spacecraft.