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A parametric frequency response method for non-linear time-varying systems

  • Yuzhu Guo
  • , L. Z. Guo
  • , S. A. Billings*
  • , Daniel Coca
  • , Z. Q. Lang
  • *Corresponding author for this work
  • University of Sheffield

Research output: Contribution to journalArticlepeer-review

Abstract

A new parametric frequency response algorithm is introduced to investigate linear and non-linear dynamic systems with time-varying parameters. In the new algorithm the time-varying parameters are regarded as additional inputs of the systems and the non-linear generalised frequency response functions for multi-input-single-output systems are then employed to obtain Zadeh's system functions from a differential equation representation. The parametric frequency response method reveals how the time-varying parameters affect the behaviour of the systems through a time-varying term. The new method can be applied to both linear and non-linear time-varying systems.

Original languageEnglish
Pages (from-to)2133-2144
Number of pages12
JournalInternational Journal of Systems Science
Volume45
Issue number10
DOIs
StatePublished - 3 Oct 2014
Externally publishedYes

Keywords

  • Zadeh's system function
  • frequency domain
  • parametric frequency response method
  • time-varying systems

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