Doctoral Dissertations

Daero Lee

Abstract

"This study develops an integrated guidance, navigation and control system for use in autonomous proximity operations and docking of spacecraft. A new approach strategy is proposed based on a modified system developed for use with the International Space Station. It is composed of three "V-bar hops" in the closing transfer phase, two periods of stationkeeping and a "straight line V-bar" approach to the docking port. Guidance, navigation and control functions are independently designed and are then integrated in the form of linear Gaussian-type control. The translational maneuvers are determined through the integration of the state-dependent Riccati equation control formulated using the nonlinear relative motion dynamics with the weight matrices adjusted at the steady state condition. The reference state is provided by a guidance function, and the relative navigation is performed using a rendezvous laser vision system and a vision sensor system, where a sensor mode change is made along the approach in order to provide effective navigation. The rotational maneuvers are determined through a linear quadratic Gaussian-type control using star trackers and gyros, and a vision sensor. The attitude estimation mode change is made from absolute estimation to relative attitude estimation during the stationkeeping phase inside the approach corridor. The rotational controller provides the precise attitude control using weight matrices adjusted at the steady state condition, including the uncertainty of the moment of inertia and external disturbance torques. A six degree-of-freedom simulation demonstrates that the newly developed GNC system successfully autonomously performs proximity operations and meets the conditions for entering the final docking phase"--Abstract, page iii.

Advisor(s)

Pernicka, Hank

Committee Member(s)

Landers, Robert G.
Midha, A. (Ashok)
Dagli, Cihan H., 1949-
Sarangapani, Jagannathan, 1965-

Department(s)

Mechanical and Aerospace Engineering

Degree Name

Ph. D. in Aerospace Engineering

Publisher

Missouri University of Science and Technology

Publication Date

Summer 2009

Pagination

x, 137 pages

Note about bibliography

Includes bibliographical references (pages 128-136).

Rights

© 2009 Daero Lee, All rights reserved.

Document Type

Dissertation - Open Access

File Type

text

Language

English

Subject Headings

AutonomyCouplingsNavigation (Astronautics)Orbital rendezvous (Space flight)Space vehicles -- Guidance systems

Thesis Number

T 9528

Print OCLC #

606852899

Electronic OCLC #

750547206

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