Transactions of Nanjing University of Aeronautics & Astronautics
Reconfiguration of Spacecraft Cluster Based on Distributed Local Information
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Abstract:
The reconstruction of spacecraft cluster based on local information and distributed strategy is investigated. Each spacecraft is an intelligent individual that can detect information within a limited range and can determine its behavior based on surrounding information. The objective of the cluster is to achieve the formation reconstruction with minimum fuel consumption. Based on the principle of dual pulse rendezvous maneuver， three target selection strategies are designed for collision avoidance. Strategy-1 determines the target point’s attribution according to the target’s distance when the target point conflicts and uses a unit pulse to avoid a collision. Strategy-2 changes the collision avoidance behavior. When two spacecraft meet more than once， the strategy switches the target points of the two spacecraft. In Strategy-3， the spacecraft closer to the target has higher priority in target allocation. Strategy-3 also switches the target points when two spacecraft encounter more than once. The three strategies for a given position， different completion times， and random position are compared. Numerical simulations show that all three strategies can accomplish the spacecraft cluster's reconfiguration under the specified requirements. Strategy-3 is better than Strategy-1 in all simulation cases in the sense of less fuel consumption with different completion times and given location， and it is more effective than Strategy-2 in most of the completion time. With a random initial position and given time， Strategy-3 is better than Strategy-1 in about 70% of the cases and more stable.
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This research was supported by the Advanced Research Project of China Manned Space Program.
Clc Number:
V44
CHINA AERO-SCIENCES
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