Abstract
The paper presents the problem of triaxial stabilization of the angular position of a rigid body. The possibility of implementing a control system in which dissipative torque tends to zero over time and the restoring torque is the only remaining control torque is considered. The case of vanishing damping considered in this study is known as the most complicated one in the problem of stability analysis of mechanical systems with a nonstationary parameter at the vector of dissipative forces. The lemma of the estimate from below for the norm of the restoring torque in the neighborhood of the stabilized motion of a rigid body and two theorems on asymptotic stability of the stabilized motion of a body are proven. It is shown that the sufficient conditions of asymptotic stability found in the theorems are close to the necessary ones. The results of numerical simulation illustrating the conclusions obtained in this study are presented.
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Original Russian Text © A.Yu. Aleksandrov, A.A. Tikhonov, 2017, published in Vestnik Sankt-Peterburgskogo Universiteta: Matematika, Mekhanika, Astronomiya, 2017, Vol. 62, No. 4, pp. 633–643.
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Aleksandrov, A.Y., Tikhonov, A.A. Attitude stabilization of a rigid body in conditions of decreasing dissipation. Vestnik St.Petersb. Univ.Math. 50, 384–391 (2017). https://doi.org/10.3103/S1063454117040021
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DOI: https://doi.org/10.3103/S1063454117040021