Remarks on Delay Approximations Based on Feedback

Abstract

The response of a unity-feedback system with a delay element in the forward path exhibits a periodic component that can be approximated by truncating its harmonic expansion. Rational approximants of the transfer function of such element can simply be obtained from this closed-loop approximation. A unifying approach to recent methods based on this criterion is presented, which allows us to point out their respective features. The standard Pade technique and a heuristic method described are also considered.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2001
Accession Number
ADP013752

Entities

People

  • Alessandro Beghi
  • Antonio Lepschy
  • Umberto Viaro
  • Wieslaw Krajewski

Organizations

  • University of Padua

Tags

DTIC Thesaurus Topics

  • Amplitude
  • Closed Loop Systems
  • Coefficients
  • Computations
  • Feedback
  • Frequency
  • Frequency Bands
  • Frequency Response
  • Heuristic Methods
  • Polynomials
  • Rational Functions
  • Square Waves
  • Standards
  • Technical Information Centers
  • Transfer Functions

Readers

  • Control Systems Engineering.
  • Linear Algebra
  • Operations Research