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Guidance, navigation, and control subsystem equipment selection algorithm using expert system methodsEnhanced engineering tools can be obtained through the integration of expert system methodologies and existing design software. The application of these methodologies to the spacecraft design and cost model (SDCM) software provides an improved technique for the selection of hardware for unmanned spacecraft subsystem design. The knowledge engineering system (KES) expert system development tool was used to implement a smarter equipment section algorithm than that which is currently achievable through the use of a standard data base system. The guidance, navigation, and control subsystems of the SDCM software was chosen as the initial subsystem for implementation. The portions of the SDCM code which compute the selection criteria and constraints remain intact, and the expert system equipment selection algorithm is embedded within this existing code. The architecture of this new methodology is described and its implementation is reported. The project background and a brief overview of the expert system is described, and once the details of the design are characterized, an example of its implementation is demonstrated.
Document ID
19910016310
Acquisition Source
Legacy CDMS
Document Type
Technical Publication (TP)
Authors
Allen, Cheryl L. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1991
Subject Category
Computer Programming And Software
Report/Patent Number
NASA-TP-3082
L-16896
NAS 1.60:3082
Accession Number
91N25624
Funding Number(s)
PROJECT: RTOP 506-49-21-02
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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