Results 251 to 260 of about 2,812 (306)

Satellite Formation-Containment Flying Control with Collision Avoidance

Journal of Aerospace Information Systems, 2018
This paper investigates the satellite formation-containment flying control problem to handle a scenario where a group of satellite effectively completes deep-space exploration.
Liangming Chen, Yanning Guo, Chuanjiang Li   +2 more
exaly   +2 more sources

Agent Based Controller for Satellite Formation Flying

2005 International Conference on Intelligent Sensors, Sensor Networks and Information Processing, 2005
In this paper an agent based control scheme for satellite formation flying is discussed. The underlying idea of our design is to use a multi-agent architecture for satellite formation flying control. The architecture is designed to enable autonomous formation flying activities. The performance requirements and algorithms are described.
K.K.T. Thanapalan, S.M. Veres
openaire   +2 more sources

Satellite affine formation flying with obstacle avoidance

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2019
This paper studies the affine formation control problem for a group of flying satellites with the performance of obstacle avoidance. Assuming that leader satellites can detect the locations of obstacles, we first investigate how to plan advisable trajectories for leader satellites such that they can smoothly pass through some specific types of ...
Liangming Chen, Zhongqi Sun, Chuanjiang Li   +2 more
exaly   +2 more sources

Formation Flying Satellites: Control By an Astrodynamicist

Celestial Mechanics and Dynamical Astronomy, 2001
Potential periodic formation orbits can be identified using Hill's equation. However, as gravitational perturbations destroy the periodicity, a control is required to maintain the desired orbits. Here, the authors address the control of individual satellites as well as the control of the whole constellation.
Alfriend, Kyle T., Vadali, Srinivas R., Schaub, Hanspeter   +2 more
openaire   +1 more source

Optimal Reconfiguration of Formation Flying Satellites

Proceedings of the 44th IEEE Conference on Decision and Control, 2006
We employ a recently developed new technique for the numerical treatment of optimal control problems for mechanical systems in order to compute optimal open loop control laws for the reconfiguration of a group of formation flying satellites. The method is based on a direct discretization of a variational formulation of the dynamical constraints.
Oliver Junge, Sina Ober-Blöbaum
openaire   +1 more source

Ultra-Dense LEO Satellite Based Formation Flying

IEEE Transactions on Communications, 2021
In this article, we consider a downlink ultra-dense LEO-based multi-terminal satellite system where multiple satellites fly in formation to serve a number of ground terminal stations for data transmission. Benefited from the dense satellite constellation, high channel capacity can be achieved via the massive virtual antenna array formed by multiple ...
Ruoqi Deng, Boya Di, Lingyang Song
openaire   +1 more source

Adaptive control for satellite formation flying under thrust misalignment

Acta Astronautica, 2009
Satellite formation flying requires precise control of relative positioning under external disturbances and parameter uncertainties. Since thrust magnitude error and misalignment are not negligible in the electric propulsion system, they should be ...
Hyung-Chul Lim, Hyochoong Bang
exaly   +2 more sources

On the formation flying of satellite constellations

Chinese Astronomy and Astrophysics, 2004
Abstract From the viewpoint of orbit dynamics, the formation flying of the satellites of a constellation and the accompanying flying in satellite-satellite tracking are affected by the following dynamical mechanisms: (1) The main characteristics of the variations of disturbed orbits determine the space configuration of the satellites.
Lin Liu, Hai-hong Wang, Jian-bo Ma
openaire   +1 more source

Cooperative fault accommodation in formation flying satellites

2008 IEEE International Conference on Control Applications, 2008
In this paper a new fault accommodation algorithm based on a two-level architecture is proposed for satellite formation missions. In this two-level framework, the notion of formation-level fault recovery (FLFR) is proposed, and the task of performance monitoring (PM) is defined in the high level (HL). By using the information provided by the PM module,
Seyyedmohsen Azizi, Khashayar Khorasani
openaire   +1 more source

An intelligent control concept for formation flying satellites

International Journal of Robust and Nonlinear Control, 2002
AbstractThis paper deals with the determination of initial conditions and the design of fuel‐balancing orbit control laws for a formation of satellites. Hill's equations describe the linearized dynamics of relative motion between two satellites. They admit bounded relative orbit solutions as special cases.
Vadali, S. R., Vaddi, S. S., Alfriend, K. T.   +2 more
openaire   +2 more sources