Memory-Augmented Adaptive Control With Parameter Convergence Guarantee

Huajie Zhu, Zhongjiao Shi*, Liangyu Zhao

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

A modified concurrent learning adaptive control, named memory-augmented adaptive control, is developed in this paper, which guarantees the convergence of parameter estimates without the requirement of persistent exciting condition and state derivative estimation. A stable low-pass filter is introduced into the error dynamics to filter out the state derivatives, circumventing the estimation of the unmeasurable state derivatives. And, the filtered basis matrix is also used in this adaptive control law to achieve the exponential convergence of the estimation error. Numerical simulations show that the proposed memory-augmented adaptive control performs better in tracking and estimation error convergence, compared to the standard adaptive control.

Original languageEnglish
Title of host publicationProceeding - 2021 China Automation Congress, CAC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages340-345
Number of pages6
ISBN (Electronic)9781665426473
DOIs
Publication statusPublished - 2021
Event2021 China Automation Congress, CAC 2021 - Beijing, China
Duration: 22 Oct 202124 Oct 2021

Publication series

NameProceeding - 2021 China Automation Congress, CAC 2021

Conference

Conference2021 China Automation Congress, CAC 2021
Country/TerritoryChina
CityBeijing
Period22/10/2124/10/21

Keywords

  • adaptive control
  • concurrent learning
  • exponential convergence
  • finite excitation

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