Research Papers

Feedback Linearization Based Generalized Predictive Control of Jupiter Icy Moons Orbiter

[+] Author and Article Information
Jianjun Shi

Department of Mechanical Engineering, Iowa State University, Ames, IA 50011rabbitsjj@gmail.com

Atul G. Kelkar

Department of Mechanical Engineering, Iowa State University, Ames, IA 50011akelkar@iastate.edu

J. Dyn. Sys., Meas., Control 131(1), 011003 (Dec 04, 2008) (10 pages) doi:10.1115/1.3023129 History: Received June 05, 2006; Revised September 15, 2007; Published December 04, 2008

This paper presents a nonlinear dynamic model of Jupiter Icy Moons Orbiter (JIMO), a concept design of a spacecraft intended to orbit the three icy moons of Jupiter, namely, Europa, Ganymede, and Callisto. The work in this paper represents a part of the feasibility study conducted to assess control requirements for the JIMO mission. A nonlinear dynamic model of JIMO is derived, which includes rigid body as well as flexible body dynamics. This paper presents a novel hybrid control strategy, which combines feedback linearization with generalized predictive control methodology in a two-step approach for attitude control of the spacecraft. This feedback linearization based generalized predictive control (FLGPC) law is used to accomplish a representative realistic in-orbit maneuver to test the efficacy of the controller. The controller performance shows that the FLGPC is a viable methodology for attitude control of a similar class of spacecraft. The results presented are a part of exhaustive study conducted to evaluate various controller designs.

Copyright © 2009 by American Society of Mechanical Engineers
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Figure 1

Jupiter Icy Moons Orbiter

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Figure 3

Coordinate systems for single body structure

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Figure 4

A simplified finite element model of central body of JIMO

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Figure 5

Scan platform of JIMO

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Figure 6

Torque input and output locations of JIMO

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Figure 7

FLGPC—slew maneuver angle

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Figure 8

FLGPC—Euler parameters

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Figure 9

FLGPC—actual control inputs

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Figure 10

FLGPC—elastic deformations of base point



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