Spacecraft Formation Reconfiguration using Impulsive Control Input

Spacecraft Attitude Control Using Control Moment Gyro Reconfiguration

The orientation of a satellite in space described relative to some other object or system is known as the attitude of the satellite. The attitude may be changing with time. To be able to control the attitude of the satellite, it must be equipped with actuators that can produce the required torque. Control Moment Gyroscope is a space craft control actuator which acts as torque amplifier. It is s...

Multiple Spacecraft Formation Control Using

Multiple spacecraft formation control about the 2 L libration point is investigated in this paper. The circular restricted three-body problem with Sun and Earth as the two primaries is utilized as a framework of study. The idea of virtual structure is considered as the architecture of multiple spacecraft formation. The center of the virtual rigid body follows a nominal orbit around the 2 L libr...

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...

Energy Suboptimal Collision-Free Reconfiguration for Spacecraft Formation Flying

FORMATION FLIGHT WITH GENERATING FUNCTIONS: the dynamics of spacecraft reconfiguration

The dynamics of reconfiguring a formation of spacecraft is studied. We pose the problem as a two-point boundary value problem where the initial and final positions and times are known and the necessary velocities for the reconfiguration transfers must be found. We present an algorithm that solves this problem for reconfiguration about a nominal trajectory in arbitrary gravity fields, providing ...