Results 261 to 270 of about 2,812 (306)
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Satellite Formation Flying Design and Evolution
Journal of Spacecraft and Rockets, 2001Several satellite formation e ying designs and their evolution through time are investigated. Satellite formation e ying designs arederived from the linearized equations of relative motion under two-body dynamics better known as Hill’ s equations (Hill, G. W., “ Researches in the Lunar Theory,”American Journal of Mathematics , Vol. 1, No.
Chris Sabol +2 more
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Adaptive LQR for Satellite Formation Flying
2021As shown in Chapter 3, a linearized relative dynamics based LQR control theory does not lead to satisfactory results when the formation is desired in an elliptic orbit and/or when the relative separation is high. It was also demonstrated in Chapter 6 that the SDRE approach is a relatively better to address such issues to a reasonable extent ...
S. Mathavaraj, Radhakant Padhi
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Satellite Formation Flying Maneuver Control
Mekhatronika, Avtomatizatsiya, Upravlenie, 2019A problem of a formation flying satellites maneuver control is presented. Among the most important criteria for satellite formation flying control system are active period maximization, precision of the configuration, secure motion (without collisions of satellites).
M. V. Palkin, I. P. Titkov
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Formation Flying Control of Small Satellites
AIAA Guidance, Navigation, and Control Conference, 2010A new second order sliding mode (2nd-SM) control algorithm of MIMO nonlinear systems for low thrust multiple picosatellites formation flying is proposed in this paper. The problem is tackled by applying chatteringfree 2nd-SM control law as a control scheme for the case where the leader satellite is in circular and elliptical reference orbits under J2 ...
Junquan LI +2 more
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Finite-Time LQR and SDRE for Satellite Formation Flying
2021Even though the results of the infinite-time LQR, SDRE, DI approaches are seemingly easier to understand and implement and can lead to acceptable results with appropriate tuning, it is very important to understand that such approaches are not strongly recommended for satellite formation flying problems in general.
S. Mathavaraj, Radhakant Padhi
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μ Control for Satellites Formation Flying
Journal of Aerospace Engineering, 2007In this paper, a μ controller is designed for a satellite formation flying system around the Earth based on an uncertainty model derived from a nonlinear relative position equation. In this model, nonzero eccentricity and varying semimajor axis are included as parametric uncertainties.
Yunjun Xu +3 more
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A lateral sensor for the alignment of two formation-flying satellites
SPIE Proceedings, 2013The Coarse Lateral Sensor (CLS) is a system able to measure the lateral position between two satellites. It bridges the gap between the coarse alignment accuracy achievable with radio frequency metrology or global positioning systems (GPS), and the alignment accuracy required to start higher-precision optical metrology systems based on interferometry ...
Roose, Stéphane +2 more
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Satellite formation flying with input saturation: An LMI approach
2011 IEEE International Symposium on Intelligent Control, 2011In this paper, we consider a relative position control problem for a satellite formation flying system in a noncoplarnar and elliptical orbit. It is assumed that the angular rate and angular acceleration are not known, but they are bounded. The system dynamics is designed with the bounded uncertain parameters.
Young-Hun Lim +2 more
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Analysis of formation flying control of a pair of nano-satellites
Proceedings of the 40th IEEE Conference on Decision and Control (Cat. No.01CH37228), 2002Gives an analysis and provides implementable solutions for constrained control problems of stabilization and maneuver control of two nano-satellites. The methodology provides solutions under various constraints of propulsion and differential drag control: magnitude constraints, disturbances and measurement errors are taken into account. The methods are
Veres, S.M. +3 more
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FormSat, a scalable formation flying communication satellite system
2010 IEEE Aerospace Conference, 2010The competitive and evolving nature of the commercial communications satellite market sector, combined with the limited number of allocations in geosynchronous orbit, have led to a steady increase in the complexity, size and weight of satellites. Satellite manufacturers in the sector have suffered from increased non-recurring engineering costs and low ...
Braukhane, A. +7 more
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