Adaptive output-feedback control of a general class of uncertain feedforward systems via a dynamic scaling approach

P. Krishnamurthy, F. Khorrami

Research output: Contribution to journalArticlepeer-review

Abstract

An adaptive output-feedback control design technique is proposed for a class of feedforward systems with input-to-state stable (ISS) appended dynamics in a block triangular (feedforward) structure. The system contains uncertain functions involving all states with the assumed bounds on uncertain functions allowed to contain crossproducts of unknown parameters and unmeasured states. The control design is based on the dual dynamic high-gain scaling technique and introduces a novel adaptation dynamics and scaling dynamics to globally stabilise the system using output feedback. The ISS appended dynamics are coupled with all the system states and the input and the ISS Lyapunov inequalities also feature crossproducts of unknown parameters and unmeasured states. The proposed control design does not require any knowledge of magnitude bounds on unknown parameters.

Original languageEnglish (US)
Pages (from-to)681-692
Number of pages12
JournalIET Control Theory and Applications
Volume5
Issue number5
DOIs
StatePublished - Mar 17 2011

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Human-Computer Interaction
  • Computer Science Applications
  • Control and Optimization
  • Electrical and Electronic Engineering

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