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Inertia‐free attitude stabilization for flexible spacecraft with active vibration suppression
Author(s) -
Liu Chuang,
Yue Xiaokui,
Shi Keke,
Sun Zhaowei
Publication year - 2019
Publication title -
international journal of robust and nonlinear control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.361
H-Index - 106
eISSN - 1099-1239
pISSN - 1049-8923
DOI - 10.1002/rnc.4742
Subject(s) - control theory (sociology) , inertia , sylvester's law of inertia , spacecraft , inertial frame of reference , vibration , modal , observer (physics) , lyapunov function , controller (irrigation) , actuator , attitude control , computer science , control engineering , engineering , control (management) , physics , symmetric matrix , aerospace engineering , nonlinear system , agronomy , eigenvalues and eigenvectors , chemistry , classical mechanics , quantum mechanics , artificial intelligence , polymer chemistry , biology
Summary This paper addresses the inertia‐free attitude control problem for flexible spacecraft in the presence of inertia uncertainties, external disturbances, actuator faults, measurement errors, and input magnitude and rate constraints (MRCs). By analyzing the influence of external disturbances, faulty signals, and actual inertial matrix, a lumped disturbance is reconstructed to facilitate the controller design. Then, a new intermediate observer is developed to estimate the attitude and modal information and the lumped disturbance. The Lyapunov stability analysis shows that the developed controller can achieve the objectives of the attitude stabilization and vibration suppression with input MRCs. Finally, numerical simulations are performed to demonstrate the effectiveness and superiority of the proposed control method.