Accession Number : AD0645881

Title :   TIME RESPONSES AND PARAMETER ESTIMATION OF NONLINEAR CONTROL SYSTEMS.

Descriptive Note : Technical rept.,

Corporate Author : SYLVANIA ELECTRONIC SYSTEMS-WEST MOUNTAIN VIEW CALIF ELECTRONIC DEFENSE LABS

Personal Author(s) : McMillian,C. ; Huber,E.

Report Date : JAN 1967

Pagination or Media Count : 50

Abstract : Control systems that include nonlinear devices such as limiters and relays with hysteresis are described by a set of first-order nonlinear differential equations. A Runge-Kutta integration method with special procedures to recognize discontinuities is then used to determine time responses using a digital computer. Results are presented for a nontrivial attitude-control system. Initial attempts of estimating parameters for this system using iterative minimization procedures were only partially successful. The difficulties encountered are discussed. (Author)

Descriptors :   (*CONTROL SYSTEMS, NONLINEAR SYSTEMS), TIME, NUMERICAL ANALYSIS, NONLINEAR DIFFERENTIAL EQUATIONS, NUMERICAL INTEGRATION, ATTITUDE CONTROL SYSTEMS, SATELLITE ATTITUDE, OPTIMIZATION

Subject Categories : Operations Research
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Distribution Statement : APPROVED FOR PUBLIC RELEASE