Magnetic Attitude Control Based on Non-Nominal Euler Axis

none3A non-linear control law is presented which allows for attitude tracking of satellites in an under-actuation condition. The control strategy is based on the identification of admissible rotation axes around which the control system can deliver torque components. This non–nominal Euler rotation is used for generating a feasible command, in the attempt of minimizing the misalignment error with respect to a prescribed attitude. Dynamic simulation is used for analyzing potential capabilities of the considered approach to control the attitude when only two components of control torque are available, in the presence of external perturbations (gravity gradient and aerodynamic torques).noneG. Avanzini; F. Giulietti; P. TortoraG. Avanzini; F. Giulietti; P. Tortor