AN APPROACH TO CONTROL OF NONLINEAR SYSTEMS THROUGH COPRIME FACTORIZATION / UM ENFOQUE SOBRE CONTROLE DE SISTEMAS NÃO LINEARES VIA FATORAÇÕES COPRIMAS

AUTOR(ES)

GUSTAVO AYRES DE CASTRO

DATA DE PUBLICAÇÃO

1998

RESUMO

The control of nonlinear systems via coprime factorization is the subject of this dissertation. Initially, a broad theory concerning nonlinear factorizations is presented. The class of stabilizing controllers for a given nonlinear plant is derived using that theory. Then, there are derived sufficient conditions for the closed loop system are also presented. One of the major departures from the original work on nonlinear factorizations is the fact that the solutions presented need only to be locally derived, which allows a wider class of dynamics to be assigned for the closed loop input- output transference relation. The robust control of nonlinear systems is achieved through the use of locally defined solutions, allowing to control systems subject to some relatively structured perturbations.

ASSUNTO(S)

nonlinear systems teoria de controle controllers theory fatoracao coprimas coprime factorization sistemas nao lineares

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