Generalization of L1 adaptive control architecture for switching estimation laws

Evgeny Kharisov, Naira Hovakimyan

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


This paper presents a modification of the estimation laws in a typical L1 adaptive controller, by replacing the projection-based integrator in the estimation loop by a switching law with a dead-zone. We consider a class of linear systems with parametric uncertainty and input disturbance. Similar to prior solutions in L1 adaptive control theory, the feedback structure is comprised of the three main elements, involving the state predictor, the adaptation laws and the lowpass filter. We derive the performance bounds for both the system output and the control signal and show that these can be adjusted by a suitable choice of a dead-zone interval.

Original languageEnglish (US)
Title of host publication2012 American Control Conference, ACC 2012
Number of pages6
StatePublished - Nov 26 2012
Event2012 American Control Conference, ACC 2012 - Montreal, QC, Canada
Duration: Jun 27 2012Jun 29 2012

Publication series

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


Other2012 American Control Conference, ACC 2012
CityMontreal, QC

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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