一种针对旋转不平衡扰动的大型卫星鲁棒姿态稳定方法
By constructing a dynamic model of rotational imbalance and rigid-flexible coupling for large satellites, and using a sliding mode observer and a magnetohydrodynamic angular velocity sensor combined with an integral sliding mode controller, the attitude deviation problem caused by rotational imbalance disturbance in large meteorological satellites was solved, achieving high-precision and high-stability attitude control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
- Filing Date
- 2025-10-15
- Publication Date
- 2026-07-17
AI Technical Summary
Existing attitude control methods are unable to effectively suppress attitude deviations and flexible vibrations caused by rotational imbalance disturbances in large meteorological satellites, resulting in a decrease in attitude stability and accuracy. In particular, it is difficult to achieve high-precision and high-stability attitude control under complex disturbance conditions.
A dynamic model of rotational imbalance and rigid-flexible coupling for a large satellite is constructed. An unbalanced disturbance is estimated using a sliding mode observer. A wide-band attitude determination is achieved by combining a magnetohydrodynamic angular velocity sensor. An integral sliding mode controller is used to suppress disturbances and to design an integral sliding mode controller to achieve global attitude stability.
It achieves high-precision estimation of unbalanced disturbances and wide-band attitude determination, improves the steady-state accuracy and dynamic response performance of attitude control, and enhances the robustness to unbalanced disturbances and external environmental interference. The attitude control accuracy and stability are improved by 17.9% and 20.6%, respectively.
Smart Images
Figure CN121500746B_ABST