Relative Motion Control of PicoSatellites Constellation in Independent Orbits

Novel Expressions of Equations of Relative Motion and Control in Keplerian Orbits

T HE autonomous control of relative motion between multiple spacecraft in orbit is one of the most essential technologies in near-future space programs. For instance, autonomous rendezvous and docking was used in resupplying the Mir space station [1] and has been identified as a key technology in many future space programs, such as assembly of modular systems in orbit [2], robotic sample return...

Relative Dynamics and Control of Spacecraft Formations in Eccentric Orbits

Formation  ying is a key technology for both deep-space and orbital applications that involve multiple spacecraft. Many future space applications will beneŽ t from using formation  ying technologies to perform distributed observations (e.g., synthetic apertures for Earth mapping interferometry) and to provide improved coverage for communication and surveillance. Previous research has focused ...

Motion Control along Relative Equilibria

Fuzzy Sliding Mode for Spacecraft Formation Control in Eccentric Orbits

The problem of relative motion control for spacecraft formation flying in eccentric orbits is considered in this paper. Due to the presence of nonlinear dynamics and external disturbances, a robust fuzzy sliding mode controller is developed. The slopes of sliding surfaces of the conventional sliding mode controller are tuned according to error states using a fuzzy logic and reach the pre-define...

Reversible Relative Periodic Orbits

We study the bundle structure near reversible relative periodic orbits in reversible equivariant systems. In particular we show that the vector eld on the bundle forms a skew product system, by which the study of bifurcation from reversible relative periodic solutions reduces to the analysis of bifurcation from reversible discrete rotating waves. We also discuss possibilities for drifts along g...