A Graphical Method for Plotting Amplitude and Phase Angle of Transfer Functions of Dynamic Systems Without Factoring Polynomials

Abstract

A method is presented for obtaining amplitude and angle plots for rational algebraic functions of an imaginary variable. Application of the method is illustrated by an example in which the frequency response of an automatically controlled aircraft is plotted. The method involves the use of templets but does not require the factoring of polynomials. Amplitude and angle plots of high-degree rational functions of an imaginary variable can be obtained more rapidly with this method than by analytical calculation or by methods involving the factoring of polynomials.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1951
Accession Number
ADA380583

Entities

People

  • Earl F. Smith

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Aeronautical Laboratories
  • Aeronautics
  • Aircrafts
  • Algebraic Functions
  • Amplitude
  • Coefficients
  • Control Systems
  • Excitation
  • Frequency
  • Frequency Response
  • Phase Shift
  • Plotting
  • Polynomials
  • Rational Functions
  • Steady State
  • Transfer Functions

Readers

  • Approximation Theory.