Integral state-feedback control of linear time-varying systems: A performance preserving approach

Research output: Contribution to journalArticlepeer-review

Abstract

An integral extension of state-feedback controllers for linear time-varying plants is proposed, which preserves performance of the nominal controller in the unperturbed case. Similar to time-invariant state feedback with integral action, the controller achieves complete rejection of disturbances whose effective action on the plant is constant with respect to the control input. Moreover, bounded-input bounded-state stability with respect to arbitrary disturbances is shown. A modification for preventing controller windup as well as tuning guidelines are discussed. The efficacy of the proposed technique is demonstrated in simulation for a two-tank system that is linearized along a time-varying reference trajectory.
Original languageEnglish
Article number110000
Number of pages9
JournalAutomatica
Volume136
Early online date2021
DOIs
Publication statusPublished - Feb 2022

Keywords

  • Time-varying systems
  • Multivariable systems
  • Disturbance rejection
  • Integral control
  • Windup mitigation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Control and Systems Engineering

Fingerprint

Dive into the research topics of 'Integral state-feedback control of linear time-varying systems: A performance preserving approach'. Together they form a unique fingerprint.

Cite this