Results 211 to 220 of about 1,149 (246)

Discrete Event Command and Control for Formation Flying of Distributed Small Spacecraft Systems

, 1999
Patrick Stadter
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Formation Flying of Tethered and Nontethered Spacecraft

, 2005
Marco B. Quadrelli
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Adaptive learning control for spacecraft formation flying

Proceedings of the 40th IEEE Conference on Decision and Control (Cat. No.01CH37228), 2002
Considers the problem of spacecraft formation flying in the presence of periodic disturbances. In particular, the nonlinear position dynamics of a follower spacecraft relative to a leader spacecraft are utilized to develop a learning controller which accounts for the periodic disturbances entering the system model.
Haizhou Pan, Marcio de Queiroz, Hong Wong, Vikram Kapila   +3 more
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Spacecraft Formation-Flying in Eccentric Orbits

AIAA Guidance, Navigation, and Control Conference and Exhibit, 2003
In this paper the value and possibility of eccentric orbits in formation flying mission are illustrated in detail. A new set of closed-form formulae that can be used in the formation design of eccentric orbits are derived by linearizing a general solution, which describes relative motion of two spacecraft in arbitrary elliptic orbits of 1 0 < ≤ e . The
Heng Zhang, Lan Sun
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Spacecraft Formation Flying

2012
Spacecraft formation flying is an important application of networked dynamical systems. Attitude control of the spacecraft is an indispensable (many applications place strict requirements on it) and difficult (due to the nonlinear dynamics) problem being studied for decades.
Ziyang Meng, Tao Yang, Karl H. Johansson
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Robust Control of Spacecraft Formation Flying

Journal of Aerospace Engineering, 2007
In this paper, a robust control scheme for two spacecraft in formation subjected to time-variant external disturbances in the space environment was developed. The proposed controller consists of two parts, the first part is for the nominal system without disturbances and the second part is to compensate for effects of system disturbances.
Yan-Ru Hu, Alfred Ng
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OPTIMAL TRAJECTORY PLANNING OF FORMATION FLYING SPACECRAFT

IFAC Proceedings Volumes, 2005
Abstract This paper introduces a closed-loop Guidance and Control optimal algorithm that balances the propellant consumption and the need for collision avoidance among formation flying spacecraft. This model-based algorithm is purely algebraic and computes the spacecraft trajectories from the knowledge of the formation linearized relative dynamics ...
Dan Dumitriu, Pedro U. Lima, Bogdan Udrea   +2 more
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Spacecraft formation flying: dynamics and control

Proceedings of the 1999 American Control Conference (Cat. No. 99CH36251), 1999
A concept of a distributed array of small, low-cost, cooperative, and highly coordinated microspacecraft is vigorously being pursued for several future space missions. Implementation of the distributed coordinated spacecraft concept will require tight control of the relative distances and phases between the participating spacecraft. We review nonlinear
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