Accession Number : AD0684543

Title :   OPTIMAL CONTROL OF NONLINEAR SYSTEMS WITH INPUT CONSTRAINTS.

Descriptive Note : Doctoral thesis,

Corporate Author : WASHINGTON UNIV ST LOUIS MO DEPT OF SYSTEMS MECHANICAL AND AEROSPACE ENGINEERING

Personal Author(s) : Alam,Mohammed Azadul

Report Date : JUN 1968

Pagination or Media Count : 84

Abstract : A new method of optimal control of nonlinear systems discussed in this dissertation. The system is optimized by minimizing a quadratic performance index, while the input is subjected to a constraint. This problem is considered as a nonlinear programming problem and some theorems of nonlinear programming are used to derive the necessary and sufficient conditions for optimal control. These conditions are then simplified to an integral equation which, for nonlinear systems, is nonlinear and is a necessary condition only. The existence of a solution of this integral equation is studied. Two different methods of solving it namely, successive approximation method and functional Lagrange expansion method are discussed. Finally a numerical example is worked out in detail. (Author)

Descriptors :   (*CONTROL SYSTEMS, NONLINEAR SYSTEMS), NONLINEAR PROGRAMMING, FUNCTIONAL ANALYSIS, CALCULUS OF VARIATIONS, INTEGRAL EQUATIONS, OPTIMIZATION, THEOREMS, THESES

Subject Categories : Theoretical Mathematics

Distribution Statement : APPROVED FOR PUBLIC RELEASE