Performance Preserving Integral Extension of Linear and Homogeneous State-Feedback Controllers

Richard Seeber, Jaime A. Moreno

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

Abstract

The problem of extending an existing state-feedback controller by an integrator is considered. A structural insight into the design of such controllers is presented for the linear case, which allows to preserve the performance of the given controller in a certain sense. Using this insight, a second order homogeneous state feedback controller with discontinuous integral action is proposed, which can reject arbitrary slope bounded, i.e., Lipschitz continuous, perturbations. By means of Lyapunov methods, stability conditions for the closed loop system and a bound for its finite convergence time are derived. Numerical simulations illustrate the results and provide further insight into the tuning of the proposed approach.
Original languageEnglish
Title of host publicationIFAC-PapersOnLine: Proceedings of the 21st IFAC World Congress
Pages5129-5134
DOIs
Publication statusPublished - 2020
Event21st IFAC World Congress - Virtuell, Germany
Duration: 12 Jul 202017 Jul 2020

Conference

Conference21st IFAC World Congress
Abbreviated titleIFAC 2020
CountryGermany
CityVirtuell
Period12/07/2017/07/20

Keywords

  • State feedback
  • Weighted homogeneity
  • Integral Control
  • Finite-time convergence

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