A behavior-based approach to multiple spacecraft formation flying

2000 2000

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Abstract (summary)

Multiple spacecraft flying in tight formation can be used to measure light from a distant star to reconstruct the star's image. This approach will be used to achieve imaging resolutions much finer than current technology permits. Several measurements must be taken from many different formation orientations and sizes. Crucial to the success of formation flying missions is the ability to navigate the spacecraft through several maneuvers while maintaining formation.

There are several approaches to the spacecraft formation flying problem. These include leader-following, behavior-based and virtual structure approaches. In the behavior-based approach the control laws that govern the motion of each spacecraft are derived by weighting the importance of several desired behaviors including formation keeping and goal seeking. However, the degree to which behavior-based approaches achieve goal seeking and formation keeping have never been analyzed. No sufficient conditions have been derived to ensure convergence for behavior-based approaches. Moreover, behavior-based strategies have never been applied to the coordination of spacecraft attitude. The main contribution of this dissertation is the development of the coupled dynamics approach to formation flying, a behavior-based control strategy. This approach is structured such that the control input to each spacecraft is influenced by the position and orientation of every other spacecraft. This establishes a notion of feedback missing from other formation flying strategies. In addition, the control laws are decentralized and can be implemented with limited communication.

We prove convergence to the final formation goal and provide a bound on the average pairwise formation keeping error for each maneuver. Furthermore, we implement similar output feedback control laws using passivity-based ideas.

Indexing (details)

Electrical engineering;
Aerospace materials
0544: Electrical engineering
0538: Aerospace materials
Identifier / keyword
Applied sciences; Attitude control; Feedback control; Formation flying; Spacecraft
A behavior-based approach to multiple spacecraft formation flying
Lawton, Jonathan Robert Tapani
Number of pages
Publication year
Degree date
School code
DAI-B 61/10, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
9780599977914, 0599977914
Beard, Randal W.
Brigham Young University
University location
United States -- Utah
Source type
Dissertations & Theses
Document type
Dissertation/thesis number
ProQuest document ID
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
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