Abstract In this paper, the attitude tracking control problem is investigated for a rigid spacecraft. Robust finite time controllers based on the quaternion and Lagrange-like model are proposed to solve this problem with model uncertainties and external perturbations. The controllers guarantee the convergence of attitude tracking errors in fixed time, where the settling time can be set in advance, and this merit is different from all the existing controllers for spacecraft attitude tracking problem. The controllers are derived using the Lyapunov theory, so the stability of the closed-loop system is guaranteed. Moreover, the modified controllers are provided to alleviate the chattering phenomenon and eliminate the singular problem. Finally, simulation results are given to demonstrate the efficiency of the proposed methods.
Highlights Quaternion-based attitude description is completely converted to the Lagrange form. The total uncertainties and coordinate transformation are considered. Fixed-time controllers are initially proposed for the spacecraft attitude tracking. The settling time can be set beforehand. The controllers are modified to avoid the chattering and singular problem.
Fixed-time control for spacecraft attitude tracking based on quaternion
Acta Astronautica ; 115 ; 303-313
2015-05-22
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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