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This paper investigates a finite time control for spacecraft hovering in highly uncertain dynamical environments, typically found around asteroids. The control method is based on the time varying second order sliding mode control. Firstly, feedback linearization is exploited to transform the dynamic equations for spacecraft into three independent second order uncertain subsystems. Secondly, a simplified...
For the tracking control of a class of uncertain second order nonlinear systems, this paper proposes a robust global finite time control strategy. This control strategy consists of two parts: firstly, a time-varying sliding mode controller is designed to make the tracking errors to zero at a desired finite time tr; then, in the succeeding time t > tr, another nonsingular terminal sliding mode controller...
A novel second-order time-varying sliding mode control(SOTVSMC) law is proposed for the robust tracking control problem of nonlinear smooth single-input single-output(SISO) system with disturbance. The advantages of the proposed SOTVSMC are twofold. The global second order sliding mode is established, which implies that the closed-loop system is global robust against matched parameter uncertainties...
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