Results 31 to 40 of about 1,938 (262)

Fractional‐order sliding mode attitude coordinated control for spacecraft formation flying with unreliable wireless communication

open access: yesIET Control Theory & Applications, 2023
This paper investigates the coordinated attitude control problem with fractional order sliding mode control theory for spacecraft formation flying by considering of unknown disturbance, inertia uncertainty, partial loss of actuators, and communication ...
Fan Wu, Ming Liu, Zhenyu Feng, Xibin Cao
doaj   +1 more source

A robust control approach for the formation flying of multiple spacecraft [PDF]

open access: yes1999 European Control Conference (ECC), 1999
We present a disturbance rejection mechanism for the formation flying of multiple spacecraft based on a robust control approach in terms of an H ∞ control problem. The corresponding H ∞ control problem is then solved numerically using linear matrix inequalities.
Mehran Mesbahi, Fred Y. Hadaegh
openaire   +1 more source

Finite-Time Synchronization Control of Spacecraft Formation With Network-Induced Communication Delay

open access: yesIEEE Access, 2017
This paper addresses the distributed orbit synchronization control of spacecraft formation flying under an undirected connected graph and in the presence of unknown external disturbances and communication time-delay.
Ruixia Liu, Xibin Cao, Ming Liu
doaj   +1 more source

Spacecraft Formation Flying in Eccentric Orbits

open access: yesJOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, 2008
Formation flight of spacecraft in eccentric orbits is considered in this paper. Symmetry of the eccentric orbits is assumed in a relative formation orbit, and under this assumption, relations of initial conditions in formation flight are derived. Some characteristic orbits are obtained from these relations, such as an orbit where a deputy spacecraft ...
Yamada, Katsuhiko   +3 more
openaire   +2 more sources

Optimal Reconfiguration of Formation Flying Spacecraft ---a Decentralized Approach [PDF]

open access: yesProceedings of the 45th IEEE Conference on Decision and Control, 2006
This paper introduces a hierarchical, decentralized, and parallelizable method for dealing with optimization problems with many agents. It is theoretically based on a hierarchical optimization theorem that establishes the equivalence of two forms of the problem, and this idea is implemented using DMOC (Discrete Mechanics and Optimal Control).
Junge, Oliver   +2 more
openaire   +2 more sources

Spacecraft formation flying using bifurcating potential fields [PDF]

open access: yes, 2008
The distributed control of spacecraft flying in formation has been shown to have advantages over conventional single spacecraft systems. These include scalability, flexibility and robustness to failures.
Bennet, Derek   +3 more
core  

Solar sail formation flying for deep-space remote sensing [PDF]

open access: yes, 2009
In this paper we consider how 'near' term solar sails can be used in formation above the ecliptic plane to provide platforms for accurate and continuous remote sensing of the polar regions of the Earth.
Biggs, James   +4 more
core   +1 more source

Bridged h‐BN Nanosheets Coatings: Simultaneous Shielding Atomic‐Oxygen Irradiation and Achieving Superior Friction Performance

open access: yesAdvanced Science, EarlyView.
ABSTRACT To confront extreme space environments, a combination of inorganic and organic coatings can provide a pathway for offering highly durable radiation resistance and anti‐friction simultaneously. Herein, a strong interfacial 3D hydrogen‐bonding network is designed to create robust hexagonal boron nitride (h‐BN) based polymer coatings with ...
Zhuoyi Li   +7 more
wiley   +1 more source

Characterization of multi-scale ionospheric irregularities using ground-based and space-based GNSS observations

open access: yesSatellite Navigation, 2021
Ionospheric irregularities can adversely affect the performance of Global Navigation Satellite System (GNSS). However, this opens the possibility of using GNSS as an effective ionospheric remote sensing tool.
YuXiang Peng   +4 more
doaj   +1 more source

On Novel Adaptive Coordinated Control for Spacecraft Formation: An Adjustable Performance Approach

open access: yesIEEE Access, 2021
This paper investigates an adaptive coordinated control problem of spacecraft formation flying (SFF) system subject to uncertain mass and external perturbations.
Dangjun Zhao, Kai Jin, Caisheng Wei
doaj   +1 more source

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