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Conditions for Fixed-Time Stability and Stabilization of Continuous Autonomous Systems

Abstract : This work presents Lyapunov analysis conditions for fixed-time stability, a property where all the system's trajectories converge exactly to zero in a finite amount of time that is independent of the system's initial condition. Necessary and sufficient conditions for fixed-time stability without taking into account the regularity of the settling-time function are presented first. Next, a characterization for fixed-time stability with continuous settling-time function is introduced. A particular form of the characterizing functions follows, it allows to establish more constructive conditions and in order to obtain a converse result, the concept of complete fixed-time stability is introduced. A set of academic examples and an example of allocation of mobile agents illustrate the given concepts. Finally, a sufficient condition for fixed-time stabilization of nonlinear affine systems is obtained.
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Submitted on : Friday, July 19, 2019 - 4:38:50 PM
Last modification on : Thursday, March 24, 2022 - 3:42:49 AM


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Francisco Lopez-Ramirez, Denis Efimov, Andrey Polyakov, Wilfrid Perruquetti. Conditions for Fixed-Time Stability and Stabilization of Continuous Autonomous Systems. Systems and Control Letters, Elsevier, 2019, 129, pp.26-35. ⟨10.1016/j.sysconle.2019.05.003⟩. ⟨hal-02142027v2⟩



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