Adaptive quasi-sliding-mode tracking control for discrete uncertain input-output systems

Xinkai Chen, Toshio Fukuda, K. David Young

Research output: Contribution to journalArticlepeer-review

76 Citations (Scopus)


In this paper, a discrete robust adaptive quasi-sliding-mode tracking controller is presented for the input-output systems with unknown parameters, unmodeled dynamics, and bounded disturbances. The robust tracking controller is comprised of adaptive control and a sliding-mode-based control design. The bounded motion of the system around the sliding surface and the stability of the global system in the sense that all signals remain bounded are guaranteed. The adaptive algorithm, in which the deadzone method is employed even though the upper and lower bounds of the disturbances are unknown, is the extension of the authors' previous work for the state-space systems. An example and its simulation results are presented to illustrate the proposed approach.

Original languageEnglish
Pages (from-to)216-224
Number of pages9
JournalIEEE Transactions on Industrial Electronics
Issue number1
Publication statusPublished - 2001 Feb
Externally publishedYes


  • Adaptive algorithm with deadzone
  • Bounded disturbances
  • Discrete quasi-sliding mode
  • Robust tracking control
  • Unmodeled dynamics

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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