Distributed coordinated attitude tracking control for spacecraft formation with communication delays
Wenjia Wang1, Chuanjiang Li1, Yanchao Sun2
1Department of Control Science and Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China.
ISA Transactions
|November 6, 2018
Summary
This study addresses spacecraft formation attitude tracking with communication delays. It develops new methods for leaders with constant or time-varying attitudes, ensuring accurate formation control.
Area of Science:
- Aerospace Engineering
- Control Systems Theory
- Robotics
Background:
- Spacecraft formations require precise attitude coordination for missions.
- Communication delays and limited neighbor interactions complicate control.
- Dynamic leader spacecraft present unique tracking challenges.
Purpose of the Study:
- To investigate distributed coordinated attitude tracking for spacecraft formations.
- To address challenges posed by time-varying communication delays and partial leader observability.
- To develop robust control strategies for dynamic leader spacecraft.
Main Methods:
- Distributed estimation and improved distributed observers for leader information.
- Adaptive coordinated attitude tracking control law design.
- Lyapunov-Krasovskii functional for stability analysis.
Main Results:
- Successful attitude tracking and estimation error convergence demonstrated.
- Control laws effectively compensate for uncertainties and disturbances.
- Theoretical results validated through numerical simulations.
Conclusions:
- The proposed methods ensure asymptotic convergence of attitude tracking and estimation errors.
- The study provides effective solutions for coordinated attitude control in complex spacecraft formations.
- The findings are crucial for enhancing the performance and reliability of multi-spacecraft missions.
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