Showing papers by "Cornel Sultan published in 2011"

TL;DR: In this article, the concept of "graceful" transition through a Hopf bifurcation for a system of nonlinear ODEs is introduced, and the key idea is to control the system such that its state space trajectory is close to the branch of equilibrium solutions or to the Branch of periodic solutions associated with a hopf partitioning, which can be generated by formulating and solving optimization control problems.

TL;DR: In this paper, a 6DOF satellite equipped with constant specific impulse thrusters was investigated in terms of fuel consumption in low Earth orbit, where the Keplerian motion around the Earth is perturbed both by the molecular air impingement (aerodynamic drag) and by the gravitational field disturbance known as J 2 effect.