Abstract

The problem of synthesis of l/sub 1/ optimal robust controller for SISO plant under coprime factor perturbations and bounded external disturbance is considered. A geometric interpretation of l/sub 1/ optimal robust controller, standard l/sub 1/ optimal controller, and two other optimal robust controllers is presented. The existence of l/sub 1/ optimal robust linear controller is proved and an algorithm for approximate solution of the problem is proposed. The algorithm is reduced to approximate solution of finite family of standard l/sub 1/ optimization problems.

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