Global output-feedback control of systems with dynamic nonlinear input uncertainties through singular perturbation-based dynamic scaling

P. Krishnamurthy, F. Khorrami

Research output: Contribution to journalArticle

Abstract

A general class of uncertain nonlinear systems with dynamic input nonlinearities is considered. The system structure includes a core nominal subsystem of triangular structure with additive uncertain nonlinear functions, coupled uncertain nonlinear appended dynamics, and uncertain nonlinear input unmodeled dynamics. The control design is based on dual controller/observer dynamic high-gain scaling with an additional dynamic scaling based on a singular perturbation-like redesign to address the non-affine and uncertain nature of the input appearance in the system dynamics. The proposed approach yields a constructive global robust adaptive output-feedback control design that is robust to the dynamic input uncertainties and to uncertain nonlinear functions allowed throughout the system structure.

Original languageEnglish (US)
Pages (from-to)690-714
Number of pages25
JournalInternational Journal of Adaptive Control and Signal Processing
Volume30
Issue number5
DOIs
StatePublished - May 1 2016

Keywords

  • adaptive control
  • dynamic output feedback
  • high-gain feedback
  • nonlinear control systems
  • observers
  • robust control

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Signal Processing
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Global output-feedback control of systems with dynamic nonlinear input uncertainties through singular perturbation-based dynamic scaling'. Together they form a unique fingerprint.

Cite this