Global finite-time set stabilization of spacecraft attitude with disturbances using second-order sliding mode control

The performance of attitude stabilization control algorithms for rigid spacecraft can be limited by disturbances. In this paper, the global finite-time problem with disturbances is investigated and handled constructing a second-order sliding mode controller. Firstly, virtual controller based on set idea constructed to globally stabilize system. Then, relay polynomial guarantee that tracking error toward will converge zero in finite-time. Finite-time Lyapunov theory applied support proof stability analysis. holds even bounded effectiveness feasibility are illustrated numerical simulations.