An Expert System to Perform On-Line Controller Tuning

Abstract

This paper describes an expert system which tunes a Proportional- Integral-Derivative (PID) controller on-line for a single-input-single-output multiple-lag process with dead time. The expert system examines features of the previous transient responses and their corresponding sets of controller parameters. It determines a new set of controller gains to obtain a more desirable time response. This technique can be used to determine and implement a different set of PID gains for each operating regime and, once in steady state, the system can be used to find optimal parameters for load disturbance rejection. The expert system can be applied to any system of the specified form (aerospace, industrial, etc.) and can be expanded to include additional process models.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1990
Accession Number
ADA224969

Entities

People

  • Jonathan S. Litt

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Army Aviation
  • Artificial Intelligence
  • Control Systems
  • Control Systems Engineering
  • Dead Time
  • Engineering
  • Expert Systems
  • Inference Engines
  • Integrals
  • Open Loop Systems
  • Pattern Recognition
  • Standards
  • Steady State
  • Time Domain

Fields of Study

  • Engineering
  • Physics

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Trauma or Military Medicine

Technology Areas

  • Space
  • Space - Spacecraft Maneuvers