ANALOG COMPUTER INVESTIGATION OF THE 'OFF-LINE' CONTROL CONCEPT.

Abstract

This report describes the investigation of a control scheme in which the output of an integral controller in a feedback path is used to modify the gain of a feedforward control path. This control scheme is referred to as 'off-line' integration. The system used for this investigation was an analog computer simulation of a heat exchanger in which it was desired to maintain the outlet temperature of the heated fluid constant by controlling the flow rate of the heating fluid when the heated fluid flow rate was subjected to increasing and decreasing 'ramp' disturbances. Comparison of the 'off-line' controller to the conventional proportional-plus-integral controller was made on the basis of the minimum integral of the absolute value of the error. Findings indicated a significant improvement in system transient response for the 'off-line' controller. Experimental results are presented as enclosures to this report. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 10, 1968
Accession Number
AD0674503

Entities

People

  • J. R. Garnett

Tags

DTIC Thesaurus Topics

  • Analog Computers
  • Computer Simulations
  • Computers
  • Control Simulators
  • Feedback
  • Flow
  • Flow Rate
  • Fluid Flow
  • Heat Exchangers
  • Integrals
  • Simulations
  • Simulators

Fields of Study

  • Engineering

Readers

  • Combustion and Flow Dynamics.
  • Robotics and Automation.