Abstract
In this paper, a novel ADRC scheme is introduced for a class of spacecraft relative motion system with actuator saturation and time-delays. The relative kinematics and dynamics between two spacecrafts are modeled with dual quaternions to avoid singular points. A set of dimensionless variables is introduced to improve the computation accuracy. Considering communication time-delays and actuator saturation, an extended state observer with time-delays predictor and an anti-windup compensator are designed. Then, a composite controller is designed to eliminate the total disturbances. Finally, the effectiveness of the proposed methodology is verified for the spacecraft rendezvous and docking system.
Original language | English |
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Journal | Proceedings of the International Astronautical Congress, IAC |
Volume | 2023-October |
State | Published - 2023 |
Event | 74th International Astronautical Congress, IAC 2023 - Baku, Azerbaijan Duration: 2 Oct 2023 → 6 Oct 2023 |
Keywords
- ADRC
- Anti-windup
- Dual quaternion
- Libration point orbits
- Time-delays