Adaptive Output Feedback Spacecraft Formation Fly- Ing Via Observer Based Feedback Linearization

Authors

Keum W. Lee, Kwandong UniversityFollow
Sahjendra N. Singh, University of Nevada, Las VegasFollow

Document Type

Article

Publication Date

1-7-2013

Publication Title

51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition

First page number:

1

Last page number:

19

Abstract

The paper presents a new a new adaptive output feedback satellite formation control system for satellites with uncertain relative dynamics. The dynamics of the follower satellite, relative to the leader spacecraft which is moving in an elliptic orbit, include disturbance forces and parameter uncertainty. It is assumed that only the relative position of the follower satellite is available for feedback. The objective is to design a controller for the tracking of reference relative position trajectories. An adaptive control system is designed which includes a high-gain observer to provide the estimates of the lumped unknown and uncertain functions, and the relative velocity of the follower satellite. Compared to existing adaptive satellite formation controllers, in which controller parameters are turned, here the estimated function of the control law provides adaptivity. The control system accomplishes semiglobal stability in the closed-loop system, and the control law recovers the performance of a feedback linearizing control system after a short transient period. Simulation results are presented which show that the designed control system accomplishes precise formation control, despite the presence of disturbance forces and parameter uncertainty.

Disciplines

Aerospace Engineering | Electrical and Computer Engineering | Engineering

Language

English

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

Repository Citation

Lee, K. W., Singh, S. N. (2013). Adaptive Output Feedback Spacecraft Formation Fly- Ing Via Observer Based Feedback Linearization. 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 1-19.