Results 211 to 220 of about 1,938 (262)
Some of the next articles are maybe not open access.
Adaptive learning control for spacecraft formation flying
Proceedings of the 40th IEEE Conference on Decision and Control (Cat. No.01CH37228), 2002Considers 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.
Hong Wong +3 more
openaire +1 more source
Initialization of distributed spacecraft for precision formation flying
Proceedings of 2003 IEEE Conference on Control Applications, 2003. CCA 2003., 2004In this paper we present a solution to the formation initialization (FI) problem for N distributed spacecraft located in deep space. Our solution to the FI problem is based on a three-stage sky search procedure that reduces the FI problem for N spacecraft to the simpler problem of initializing a set of sub-formations. We demonstrate our FI algorithm in
Hadaegh, Fred Y. +2 more
openaire +1 more source
Spacecraft Formation-Flying in Eccentric Orbits
AIAA Guidance, Navigation, and Control Conference and Exhibit, 2003In 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
openaire +1 more source
Robust Control of Spacecraft Formation Flying
Journal of Aerospace Engineering, 2007In 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
openaire +1 more source
Pulse-based periodic control for spacecraft formation flying
Proceedings of the 2000 American Control Conference. ACC (IEEE Cat. No.00CH36334), 2000Distributed spacecraft formation flying has been identified as an enabling technology by NASA and the US Air Force for several future space missions. Implementation of the distributed spacecraft formation flying concept requires tight, autonomous, cooperative, real-time control of the relative distance and attitude between the participating spacecraft.
Qiguo Yan +2 more
openaire +1 more source
Distributed Attitude Coordination Control for Spacecraft Formation Flying
IEEE Transactions on Aerospace and Electronic Systems, 2012A distributed attitude coordination control scheme using terminal sliding mode (TSM) is proposed for a group of spacecraft in the presence of external disturbances. A novel fast terminal sliding manifold is presented, and a robust control term based on the hyperbolic tangent function is employed to suppress bounded external disturbances.
An-Min Zou, Krishna Dev Kumar
openaire +1 more source
Unscented kalman filter for multiple spacecraft formation flying
Proceedings of the 2003 American Control Conference, 2003., 2004Abstract In this paper, Unscented Kalman Filter (UKF) is presented both in its canonical form and in a form that is suitable for spacecraft attitude estimation using quaternions. An atti- tude quaternion has a unit norm, resulting in a singular co- variance matrix.
Lingji Chen +2 more
openaire +1 more source
Spacecraft formation flying reconfiguration with extended and impulsive maneuvers
Journal of the Franklin Institute, 2019zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Giuseppe Di Mauro +3 more
openaire +3 more sources
A study of the navigation for formation flying of spacecraft
SICE Annual Conference 2007, 2007This paper presents a robust and efficient approach for relative navigation and parameter estimation of spacecraft flying in formation. This approach uses measurements from the optical data that provides a line of sight vector from the master spacecraft to the secondary satellite.
openaire +1 more source
Deep Space Formation Flying Spacecraft Path Planning
The International Journal of Robotics Research, 2007Efficient algorithms for collision-free energy sub-optimal path planning for formations of spacecraft flying in deep space are presented. The idea is to introduce a set of way-points through which the spacecraft are required to pass, combined with parameterizations of the trajectories which are energy-optimal for each spacecraft.
Cornel Sultan +2 more
openaire +1 more source