Attitude stabilization of rigid spacecraft with finite‐time convergence

Abstract

SUMMARYThe problem of attitude control for a spacecraft model which is nonlinear in dynamics with inertia uncertainty and external disturbance is investigated in this paper. Two sliding mode controllers are proposed to force the state variables of the closed-loop system to converge to the origin in finite time. Specially, the second control design consists of the estimation of the uncertainty and disturbance by adaptive method and thus it achieves the decrease of undesired chattering effectively. Also, simulation results are presented to illustrate the effectiveness of the control strategies.

Adaptive finite-time stabilization of a class of switched nonlinear systems using neural networks

“…The proof is similar to Lemma 3.6 in [36], and hence it is omitted here. (6), it can be seen that the derivative of the function V (x) may be positive when the value of V (x) is sufficiently small and d > 0.…”

Anti-Unwinding Attitude Control with Fixed-Time Convergence for a Flexible Spacecraft

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Disturbance observer based finite-time attitude control for rigid spacecraft under input saturation

“…Then for the purpose of control system design, some definitions and lemmas are given from [10,11,18,35]. …”