Akademik Veri Yönetim Sistemi
Balkan Journal of Electrical and Computer Engineering, cilt.6, ss.53-61, 2018 (Hakemli Dergi)
In this paper, a nonlinear robust quaternion-based
controller is developed to address the three-axis attitude tracking
control problem of rigid spacecraft in presence of parametric
uncertainties, unknown external disturbances and sensor noise. As
a first step, a robust controller is designed that compensates
parametric uncertainty and disturbance effects. The robust
controller then reformulated to deal also with sensor noise.
Singularity free unit quaternions are used to represent the attitude
of the satellite in three-dimensional space. The Lyapunov-based
stability analysis is applied to prove that a uniformly ultimately
bounded tracking result is achieved. Simulation results are
presented to illustrate the feasibility of the proposed control
strategy.