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TECHNICAL BRIEFS

A Dissipative Control Design for Jupiter Icy Moons Orbiter

[+] Author and Article Information
Jianjun Shi

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

Atul G. Kelkar

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

J. Dyn. Sys., Meas., Control 129(4), 559-565 (Jan 06, 2007) (7 pages) doi:10.1115/1.2745888 History: Received February 09, 2006; Revised January 06, 2007

This technical brief 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 presented in this paper represents a part of a feasibility study conducted to assess control requirements of the JIMO mission. A nonlinear dynamic model of JIMO is derived that includes rigid body as well as flexible body dynamics. A nonlinear dissipative control law with guaranteed stability is used to perform a representative in-orbit maneuver. The results presented are part of an exhaustive study conducted to evaluate various controller designs.

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Copyright © 2007 by American Society of Mechanical Engineers
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Figures

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Figure 1

Jupiter Icy Moons Orbiter (JIMO)

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Figure 2

Coordinate systems for spacecraft system with an appendage

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Figure 3

The first bending mode shape for JIMO

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Figure 4

The second bending mode shape for 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

90deg slew maneuver of JIMO

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Figure 8

Relative angle and angular velocity of scan platform

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Figure 9

Euler parameters time history

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Figure 11

Elastic deformations at the base of the scan platform

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