This article studies spacecraft attitude control problem to achieve global fast tracking for ground target. The expected spacecraft attitude parameters and a Lagrange-like model of spacecraft attitude motion are presented, respectively, and then a robust sliding mode controller based on this model and Euler parameters is designed to achieve tracking in the presence of model uncertainties and external disturbances. The proposed controller can guarantee global fast stability of the closed-loop systems and convergence of tracking errors by employing global fast-sliding mode model, which combines the advantages of linear and terminal sliding mode controls. The theoretical proof of stability and convergence is given subsequently. Numerical simulations are finally presented to demonstrate the performance of the developed controller.
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