Abstract

Functional reasoning, a subfield of model-based reasoning, is discussed. This approach uses abstractions of a device's purpose to index behaviors that achieve that purpose. Functional modeling, a variation on this method, also uses simulation as a core reasoning strategy. The complex causal knowledge of a device along functional lines is decomposed, then a causal story of how the device will operate in a particular situation given stated boundary conditions is composed. The application of the functional approach to modeling the fuel system of a F/A-18 aircraft is described. The representation of the F/A-18 fuel system includes 89 component devices, 92 functions, 118 behaviors, and 181 state variables.

Department(s)

Computer Science

Keywords and Phrases

Aerospace Computing; Aircraft; Aircraft Fuel System; Causal Knowledge; Functional Reasoning; Knowledge Acquisition; Model-Based Reasoning; Simulation

International Standard Serial Number (ISSN)

0885-9000

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 1993 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

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