Use Of Communicating Expert Systems In Fault Diagnosis For Space Station Applications

J. Y. Read; T. P. Howland; W. A. Perkins

doi:10.1117/12.964855

20 February 1987 Use Of Communicating Expert Systems In Fault Diagnosis For Space Station Applications

J. Y. Read, T. P. Howland, W. A. Perkins

Proceedings Volume 0729, Space Station Automation II; (1987) https://doi.org/10.1117/12.964855
Event: Cambridge Symposium_Intelligent Robotics Systems, 1986, Cambridge, MA, United States

Abstract

In many complex monitoring and diagnostic applications it is useful to build separate expert systems for different subsystems and have them operate (on different computers) mostly in an independent mode with only occasional interactions. There are many advantages of such a scheme including easier knowledge engineering and increased overall system performance. Using an enhanced version of the Lockheed Expert System (LES), we have developed a communicating expert systems for fault diagnosis and fault correction in a prototype for the Space Station Air Revitalization System (ARS). The system consists of three communicating expert systems, one for oxygen generation, one for CO₂ removal and a supervisor for overall control. The three expert system modules communicate via mailboxes. The purpose of this work is to gain an understanding of the problems involved and advantages of using such a communicating expert systems framework.

Citation Download Citation

J. Y. Read, T. P. Howland, and W. A. Perkins "Use Of Communicating Expert Systems In Fault Diagnosis For Space Station Applications", Proc. SPIE 0729, Space Station Automation II, (20 February 1987); https://doi.org/10.1117/12.964855

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