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Finite-time stability analysis of a class of nonlinear time-varying systems: a numerical algorithm

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  • Zhihua Chen
  • Yongchun Xie

Abstract

The paper investigates the finite-time stability (FTS) analysis of a very general class of nonlinear time-varying systems. The FTS of the considered system, whose vector field consists of a nonlinear part which can be sublinear or superlinear, and a linear part which can be time-varying, has not been fully studied before. By estimating the bound of the norm of the considered system's states with the generalised Gronwall–Bellman inequality, a sufficient criterion is established to guarantee the FTS of the considered system. To facilitate checking the criterion in practice, a novel numerical algorithm is proposed by numerically solving certain differential equations. Therefore, the FTS of the considered class of nonlinear time-varying systems can be easily analysed by the numerical algorithm. Further considering the numerical errors in the practical numerical computation, we strictly prove the credibility and programmability of the numerical algorithm in theory. Finally, three numerical examples are provided to illustrate the effectiveness the proposed results.

Suggested Citation

  • Zhihua Chen & Yongchun Xie, 2018. "Finite-time stability analysis of a class of nonlinear time-varying systems: a numerical algorithm," International Journal of Systems Science, Taylor & Francis Journals, vol. 49(10), pages 2224-2242, July.
    • Handle: RePEc:taf:tsysxx:v:49:y:2018:i:10:p:2224-2242
    DOI: 10.1080/00207721.2018.1496299
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