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The Buffer Diagnostic Prototype: A Fault Isolation Application Using CLIPSThis paper describes problem domain characteristics and development experiences from using CLIPS 6.0 in a proof-of-concept troubleshooting application called the Buffer Diagnostic Prototype. The problem domain is a large digital communications subsystems called the real-time network (RTN), which was designed to upgrade the launch processing system used for shuttle support at KSC. The RTN enables up to 255 computers to share 50,000 data points with millisecond response times. The RTN's extensive built-in test capability but lack of any automatic fault isolation capability presents a unique opportunity for a diagnostic expert system application. The Buffer Diagnostic Prototype addresses RTN diagnosis with a multiple strategy approach. A novel technique called 'faulty causality' employs inexact qualitative models to process test results. Experimental knowledge provides a capability to recognize symptom-fault associations. The implementation utilizes rule-based and procedural programming techniques, including a goal-directed control structure and simple text-based generic user interface that may be reusable for other rapid prototyping applications. Although limited in scope, this project demonstrates a diagnostic approach that may be adapted to troubleshoot a broad range of equipment.
Document ID
19950013210
Acquisition Source
Johnson Space Center
Document Type
Abstract
Authors
Ken Porter
(Harris Space Systems Rockledge, Florida, United States)
Date Acquired
September 6, 2013
Publication Date
November 1, 1994
Publication Information
Publication: Third CLIPS Conference Proceedings: Volume 1
Publisher: National Aeronautics and Space Administration
Subject Category
Computer Programming and Software
Report/Patent Number
NASA-CP-10162-VOL-1
Meeting Information
Meeting: 3rd CLIPS (C Language Integrated Production System) Conference
Location: Houston, TX
Country: US
Start Date: September 12, 1994
End Date: September 14, 1994
Sponsors: National Aeronautics and Space Administration
Accession Number
95N19626
Distribution Limits
Public
Copyright
Portions of document may include copyright protected material.
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