Accession Number : ADA190201

Title :   Approximation Methods for the Identification and Control of Distributed Parameter Systems.

Descriptive Note : Final technical rept. 1 Oct 84-30 Sep 87,

Corporate Author : UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF MATHEMATICS

Personal Author(s) : Rosen, I G

PDF Url : ADA190201

Report Date : 20 Nov 1987

Pagination or Media Count : 43

Abstract : Efforts to develop computational methods for the identification and optimal control of linear and nonlinear systems governed by distributed parameter systems are reported on. Specifically, approximation methods for determining Optimal LOG compensators (feedback control and estimator gains) and functional parameters in linear and nonlinear partial differential equations and hereditary systems were developed, analyzed and tested. The study included theoretical, experimental and numerical components. Covergence theories for spline-based and modal finite element schemes were established and extensive numerical studies on both conventional (serial) and vector supercomputers were carried out. A parameter estimation scheme was tested using experimental data taken from the RPL structure, a laboratory experiment designed to test control algorithms for the large angle slewing of spacecraft with flexible appendages, and other projects involving the identification of flexible structures based upon experimental data were initiated.

Descriptors :   *CONTROL SYSTEMS, *SYSTEMS ANALYSIS, ALGORITHMS, ANGLES, APPENDAGES, CONTROL, DISTRIBUTION, ESTIMATES, EXPERIMENTAL DATA, FEEDBACK, FINITE ELEMENT ANALYSIS, FLEXIBLE STRUCTURES, LABORATORY TESTS, NONLINEAR SYSTEMS, NUMERICAL ANALYSIS, NUMERICAL METHODS AND PROCEDURES, OPTIMIZATION, PARAMETERS, SLEWING, SPACECRAFT, SUPERCOMPUTERS, VECTOR ANALYSIS, PARTIAL DIFFERENTIAL EQUATIONS, LINEAR DIFFERENTIAL EQUATIONS, NONLINEAR DIFFERENTIAL EQUATIONS

Subject Categories : Operations Research

Distribution Statement : APPROVED FOR PUBLIC RELEASE