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CLC number: V529.1; TP13

On-line Access: 2012-05-03

Received: 2011-11-28

Revision Accepted: 2012-02-23

Crosschecked: 2012-04-09

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Journal of Zhejiang University SCIENCE C 2012 Vol.13 No.5 P.328-338


Composite disturbance attenuation based saturated control for maintenance of low Earth orbit (LEO) formations

Author(s):  Jian-cheng Fang, Ke Sun

Affiliation(s):  National Key Laboratory of Inertial Technology, Beihang University, Beijing 100191, China; more

Corresponding email(s):   kekeesun81@aspe.buaa.edu.cn

Key Words:  Formation maintenance, Perturbation, Disturbance attenuation, H∞, state feedback, Saturated control

Jian-cheng Fang, Ke Sun. Composite disturbance attenuation based saturated control for maintenance of low Earth orbit (LEO) formations[J]. Journal of Zhejiang University Science C, 2012, 13(5): 328-338.

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author="Jian-cheng Fang, Ke Sun",
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%T Composite disturbance attenuation based saturated control for maintenance of low Earth orbit (LEO) formations
%A Jian-cheng Fang
%A Ke Sun
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%P 328-338
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.C1100350

T1 - Composite disturbance attenuation based saturated control for maintenance of low Earth orbit (LEO) formations
A1 - Jian-cheng Fang
A1 - Ke Sun
J0 - Journal of Zhejiang University Science C
VL - 13
IS - 5
SP - 328
EP - 338
%@ 1869-1951
Y1 - 2012
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.C1100350

Maintenance of high performance formation control is important for low Earth orbit (LEO) formation missions of small spacecraft. In this paper, a model of nonlinear relative motion dynamics is built, and then nonlinear and important perturbations affecting the formation configuration, such as J2 and atmospheric drag, are analyzed as disturbances. Global navigation satellite system based relative positioning with nonlinear filtering is adopted to provide state information associated with the perturbations. By combining disturbance observer based control with H; state feedback, a composite disturbance attenuation controller is proposed for maintenance of continuous and accurate formation. With consideration of precise control relying on micro thrusters, a composite disturbance attenuation based saturated controller is designed and its stability is proved. Finally, through numerical simulations, we demonstrate that control accuracy is improved after effectively avoiding perturbations and that stabilization can be satisfied using this method.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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