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Hybrid Modeling for Testing Intelligent Software for Lunar-Mars Closed Life SupportIntelligent software is being developed for closed life support systems with biological components, for human exploration of the Moon and Mars. The intelligent software functions include planning/scheduling, reactive discrete control and sequencing, management of continuous control, and fault detection, diagnosis, and management of failures and errors. Four types of modeling information have been essential to system modeling and simulation to develop and test the software and to provide operational model-based what-if analyses: discrete component operational and failure modes; continuous dynamic performance within component modes, modeled qualitatively or quantitatively; configuration of flows and power among components in the system; and operations activities and scenarios. CONFIG, a multi-purpose discrete event simulation tool that integrates all four types of models for use throughout the engineering and operations life cycle, has been used to model components and systems involved in the production and transfer of oxygen and carbon dioxide in a plant-growth chamber and between that chamber and a habitation chamber with physicochemical systems for gas processing.
Document ID
20000110015
Acquisition Source
Johnson Space Center
Document Type
Preprint (Draft being sent to journal)
Authors
Malin, Jane T.
(NASA Johnson Space Center Houston, TX United States)
Nicholson, Leonard S.
Date Acquired
August 19, 2013
Publication Date
January 1, 1999
Subject Category
Man/System Technology And Life Support
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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