Use of a Working Model in Fault Diagnosis

Abstract

Many types of knowledge are required for effective reasoning in the diagnostic domain. In particular, knowledge about the normal functioning of a system is essential in order to troubleshoot the system. This document defines a working model which represents a troubleshooter's integrated knowledge of system components, to include input, output, structure, function, and casual relationships. Two ways that the working model can aid in fault diagnosis are in generating hypotheses for subsequent testing and in verifying or explaining faulty behavior. This paper is a representation of an automobile mechanic for the mental working model. The emphasis in this domain is to use the working model to generate new hypotheses, in a manner consistent with the behavior of real mechanics. Keywords: Cognitive science; Problem solving; Decision making; Mental models; Judgement; Army research.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1988
Accession Number
ADA195621

Entities

People

  • Kenneth R. Allison

Organizations

  • Georgia Tech

Tags

Communities of Interest

  • Biomedical
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Causal Reasoning
  • Classification
  • Computer Science
  • Computers
  • Fuel Lines
  • Fuel Pumps
  • Fuel Systems
  • Fuel Tanks
  • Hierarchies
  • Ignition
  • Ignition Systems
  • Instructors
  • Mechanics
  • Military Research
  • Pumps
  • Reasoning
  • Social Sciences

Readers

  • Artificial Intelligence
  • Computational Modeling and Simulation