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Comments on 'fixed-time backstepping fractional-order sliding mode excitation control for performance improvement of power system'

Tavazoei, M. S ; Sharif University of Technology | 2022

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  1. Type of Document: Article
  2. DOI: 10.1109/TCSI.2022.3161414
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2022
  4. Abstract:
  5. In this note, it is shown that the Lyapunov function-based analyses done in the above-titled article to design a backstepping sliding mode controller contain some drawbacks. These drawbacks include ignoring some terms in simplification of time-derivative of the considered Lyapunov functions, which do not vanish in a finite-time. Moreover, by presenting a counterexample, it is revealed that the finite-time convergence of the error signals cannot be necessarily concluded from a Lyapunov function-based inequality used in the aforementioned article. © 2004-2012 IEEE
  6. Keywords:
  7. Lyapunov function ; Backstepping ; Electric power system control ; Lyapunov methods ; Sliding mode control ; Time switches ; Backstepping control ; Convergence ; Fixed time ; Fractional order ; Lyapunov's functions ; Lyapunov's methods ; Power systems stability ; Sliding-mode control ; Lyapunov functions
  8. Source: IEEE Transactions on Circuits and Systems I: Regular Papers ; Volume 69, Issue 8 , 2022 , Pages 3461-3462 ; 15498328 (ISSN)
  9. URL: https://ieeexplore.ieee.org/document/9745267