Adaptive Output Feedback Control of Nonlinear Time-Delay Systems with Application to Chemical Reactor Systems

Xianglei Jia, Xinkai Chen, Shengyuan Xu, Baoyong Zhang, Zhengqiang Zhang

Research output: Contribution to journalArticle

22 Citations (Scopus)


This paper considers the problem of global adaptive stabilization for strict feedback nonlinear systems with time delay and parameter uncertainty. By designing a delay-independent reduced-order observer with two dynamic gains, we propose a universal adaptive control strategy to reduce the conservatism of the growth conditions imposed on nonlinearities. With the help of Lyapunov-Krasovskii functionals, stability analysis is subtly conducted. Finally, the proposed controller is applied to a chemical reactor system to illustrate the usefulness of our results.

Original languageEnglish
Article number7855829
Pages (from-to)4792-4799
Number of pages8
JournalIEEE Transactions on Industrial Electronics
Issue number6
Publication statusPublished - 2017 Jun 1



  • Dynamic gain
  • Lyapunov-Krasovskii functional
  • nonlinear time-delay systems
  • output feedback

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering

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