A Thermal Expert System (TEXSYS) development overview - AI-based control of a Space Station prototype thermal busA knowledge-based control system for real-time control and fault detection, isolation and recovery (FDIR) of a prototype two-phase Space Station Freedom external thermal control system (TCS) is discussed in this paper. The Thermal Expert System (TEXSYS) has been demonstrated in recent tests to be capable of both fault anticipation and detection and real-time control of the thermal bus. Performance requirements were achieved by using a symbolic control approach, layering model-based expert system software on a conventional numerical data acquisition and control system. The model-based capabilities of TEXSYS were shown to be advantageous during software development and testing. One representative example is given from on-line TCS tests of TEXSYS. The integration and testing of TEXSYS with a live TCS testbed provides some insight on the use of formal software design, development and documentation methodologies to qualify knowledge-based systems for on-line or flight applications.
Document ID
19920041067
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Glass, B. J. (NASA Ames Research Center Moffett Field, CA, United States)
Hack, E. C. (Lockheed Engineering and Sciences Co. Houston, TX, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1990
Subject Category
Cybernetics
Meeting Information
Meeting: i-SAIRAS ''90: International Symposium on Artificial Intelligence, Robotics and Automation in Space