Diagnosing multiple faults in SSM/PMADMultiple fault diagnosis for SSM/PMAD (space station module/power management and distribution) using the knowledge management design system as applied to the SSM/PMAD domain (KNOMAD-SSM/PMAD) is discussed. KNOMAD-SSM/PMAD provides a powerful facility for knowledge representation and reasoning which has been used to build the second generation of FRAMES (fault recovery and management expert system). FRAMES now handles the diagnosis of multiple faults and provides support for a more powerful interface for user interaction during autonomous operation. There are two types of multiple fault diagnosis handled in FRAMES. The first diagnoses hard faults, soft faults, and incipient faults simultaneously. The second diagnoses multiple hard faults which occur in close proximity in time to one another. Multiple fault diagnosis in FRAMES is performed using a rule-based approach. This rule-based approach, enabled by the KNOMAD-SSM/PMAD system, has proven to be powerful. Levels of autonomy are discussed, focusing on the approach taken in FRAMES for providing at least three levels of autonomy: complete autonomy, partial autonomy, and complete manual mode.
Document ID
19910053350
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Riedesel, Joel (Martin Marietta Space Systems Denver, CO, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1990
Subject Category
Spacecraft Propulsion And Power
Meeting Information
Meeting: Intersociety Energy Conversion Engineering Conference