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首页> 外文期刊>Acta astronautica >Geometric robust adaptive control for satellite attitude tracking with reaction wheels
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Geometric robust adaptive control for satellite attitude tracking with reaction wheels

机译:用反应轮跟踪卫星姿态的几何鲁棒自适应控制

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摘要

This study proposes a new robust adaptive tracking controller for satellite attitude dynamics with reaction wheel assembly. With the attitude kinematics represented by rotation matrix, the attitude control system is formulated to accommodate bounded disturbances and uncertain moment of inertia. The associated error dynamics are developed directly in SO(3) from geometric mechanics. Almost global asymptotic stability is formally proved in the sense of Lyapunov by using the geometry. The proposed controller is then applied to both numerical simulations and hardware experiments. It works well for our own developed spacecraft testbed for three experimental scenarios, even with disturbances/uncertainties caused by offsets of the center of mass and air-bearing. The selection of proportional gain dominantly affects the characteristics of attitude tracking. According to numerical simulations and hardware experiments, the proposed controller performs well, even when the measurement accuracy of angular velocity is low.
机译:该研究提出了一种用于具有反作用轮组件的卫星姿态动态的新的鲁棒自适应跟踪控制器。利用旋转矩阵表示的姿态运动学,配制姿态控制系统以适应有界扰动和惯性的不确定时刻。相关的错误动态直接从几何力学直接开发(3)。几乎全局渐近稳定性通过使用几何形状在Lyapunov的意义上被正式证明。然后将所提出的控制器应用于数值模拟和硬件实验。对于我们自己的发达的航天器进行了适用于三个实验场景的良好,即使具有由质量和空气中心偏移引起的扰动/不确定性。比例增益的选择显着影响姿态跟踪的特征。根据数值模拟和硬件实验,所提出的控制器的表现良好,即使角速度的测量精度低。

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