Prescribed-Time Output-Feedback Stabilization of Uncertain Nonlinear Systems with Unknown Time Delays

P. Krishnamurthy, F. Khorrami

Research output: Chapter in Book/Report/Conference proceedingConference contribution


A prescribed-time output-feedback stabilizing controller is designed for a class of uncertain nonlinear strict-feedback-like systems with unknown time delays. The control design is based on a novel adaptation of the dual dynamic high-gain scaling based observer and controller design methodology wherein a Lyapunov-Krasovskii functional is first used to show existence of closed-loop solutions over the prescribed time interval. Thereafter, dynamics of an adaptation state variable and high-gain scaling parameter are used to show that unknown parameters are dominated within a sub-interval of the prescribed time after which a formulation of a Lyapunov function dynamics as a scalar delay differential equation is introduced to establish exponential convergence within the remaining sub-interval of the prescribed time.

Original languageEnglish (US)
Title of host publication2020 American Control Conference, ACC 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages6
ISBN (Electronic)9781538682661
StatePublished - Jul 2020
Event2020 American Control Conference, ACC 2020 - Denver, United States
Duration: Jul 1 2020Jul 3 2020

Publication series

NameProceedings of the American Control Conference
ISSN (Print)0743-1619


Conference2020 American Control Conference, ACC 2020
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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