Attitude Control for Magnetic Actuated Satellite

This paper deals with three-axis stabilization of a gravity gradient low earth orbit satellite. The problem of controllingthe spacecraft attitude usingonly magnetic torquing is realized in the form of the sliding mode control. Stabilityanalysis reveals that this control law is stable for satellites, which moments of inertia are of the same order of magnitude. Furthermore a proportional-derivativefeedback cross product with the local geomagnetic field vector is proposed. It is proven that this control law is globally asymptotically stable. Simulations have shown that the control law is a good candidate for cheap onboard attitude control Keyword