Finite-time stabilization of nonlinear impulsive dynamical systems |
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Affiliation: | 1. Department of Mechanical Engineering, Villanova University, Villanova, PA 19085-1681, United States;2. School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0150, United States |
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Abstract: | Finite-time stability involves dynamical systems whose trajectories converge to a Lyapunov stable equilibrium state in finite time. For continuous-time dynamical systems finite-time convergence implies nonuniqueness of system solutions in reverse time, and hence, such systems possess non-Lipschitzian dynamics. For impulsive dynamical systems, however, it may be possible to reset the system states to an equilibrium state achieving finite-time convergence without requiring non-Lipschitzian system dynamics. In this paper, we develop sufficient conditions for finite-time stability of impulsive dynamical systems using both scalar and vector Lyapunov functions. Furthermore, we design hybrid finite-time stabilizing controllers for impulsive dynamical systems that are robust against full modelling uncertainty. Finally, we present a numerical example for finite-time stabilization of large-scale impulsive dynamical systems. |
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