Modeling and Control of Large Space Structures

Period of Performance: 01/01/1984 - 12/31/1984

$260K

Phase 2 SBIR

Recipient Firm

Systems Engineering for Power, Inc.
4300 Evergreen Ln - #302
Annandale, VA 22003
Principal Investigator

Abstract

AN INTEGRATED SOFTWARE SYSTEM WILL BE DEVELOPED TO MAKE THE POWERFUL ANALYTICAL DESIGN TECHNIQUES FOR CONTROL AND MODELING DEVELOPED IN PHASE I USEFUL TO DESIGN ENGINEERS. THIS WILL BE DONE BY USING A COMMERCIALLY AVAILABLE SYMBOLIC MANIPULATION LANGUAGE IN CONJUNCTION WITH A RELATIONAL DATA BASE MANAGER, A FLEXIBLE "COMMUNICATIONS FILE" STRUCTURE, AND SPECIAL PURPOSE (FORTRAN) PROGRAMS FOR NUMERICAL EVALUATIONS. THE SYSTEM WILL BE CAPABLE OF EVALUATING DISTRIBUTED PARAMETER MODELS FROM STANDARD STRUCTURAL MECHANICAL SPECIFICATION, OF COMBINING ELEMENTARY RIGID AND FLEXIBLE COMPONENTS TOGETHER TO MAKE A "HYBRID" SYSTEM, AND OF COMPUTING (SYMBOLICALLY AND NUMERICALLY) AND EVALUATING STABILIZING CONTROL LAWS FOR THE HYBRID SYSTEM, INCLUDING NONLINEAR LAWS. THE SYSTEM WILL BE PORTED ON A COMMERCIAL (SUN) GRAPHICS WORK STATION OF MODEST COST AND A SUPERVISOR INTERFACE WILL BE PROVIDED TO FACILITATE USER INTERACTION (AT THE SYMBOLIC, GRAPHICAL, OR NUMERICAL LEVEL) WITH THE SYSTEM. A DEMONSTRATION OF THE SYSTEM ON THE "NASA CHALLENGE SYSTEM (SCOLE)" WILL BE CARRIED OUT TO ASSESS THE EFFECTIVENESS OF THE SYSTEM.