04965743 is referenced by 152 patents and cites 5 patents.

An artificial intelligence design and qualitative modelling tool is disclosed for creating computer models and simulating therein continuous activities, functions and/or behavior using developed discrete event techniquers. Conveniently, the tool is organized in four modules: library design module, model construction module, simulation module, and experimentation and analysis. The library design module supports the building of library knowledge including component classes and elements pertinent to a particular domain of continuous activities, functions and behavior being modelled. The continuous behavior is defined discretely with respect to invocation statements, effect statements and time delays. The functionality of the components is defined in terms of variable cluster instances, independent processes and modes, further defined in terms of mode transition processes and mode dependent processes. Model construction utilizes the hierarchy of libraries and connects them with appropriate relations. The simulation executes a specialized initialization routine and executes events in a manner that includes selective inherency of characteristics through the library hierarchy and runs the events through a time and event schema until the event queue in the simulator is emptied. The experimentation and analysis module supports analysis through the generation of appropriate log files and graphics developments and includes the ability of log file comparisons.

Title
Discrete event simulation tool for analysis of qualitative models of continuous processing system
Application Number
7/219295
Publication Number
4965743
Application Date
July 14, 1988
Publication Date
October 23, 1990
Inventor
Richard A Harris
Houston
TX, US
Bryan D Basham
Seabrook
TX, US
Jane T Malin
Houston
TX, US
Agent
Edward K Fein
John R Manning
Russell E Schlorff
Assignee
The United States of America represented by the Administrator of the National Aeronautics and Space Administration
DC, US
IPC
G06F 15/18
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