Finite-time Output Feedback Attitude Control for Double Tethered Satellite System in Deep Space

This paper addresses the problem of finite-time output feedback decentralized control of double tethered satellite system (2-TSS) attitude tracking in the presence of external disturbances in deep space. More specifically, the finite-time attitude tracking control law with the reconstructed information achieving from the pseudo-angular velocity filter is proposed in this paper. The significant feature of proposed strategy is that the whole closed-loop control system can be guaranteed theoretically to be finite-time stable by the development of adding a power integrator method, which indicates that the tracking errors for 2-TSS are confronted into a small residual region around origin within finite time. Finally, numerical simulation analysis is presented to validate the effectiveness and feasibility of proposed scheme.