H/sub /spl infin// output feedback control for descriptor systems with delayed-state

Using the method of linear matrix inequalities (LMI), this paper considers the H/sub /spl infin// dynamic output feedback control for descriptor systems with delayed-state. The controller is one descriptor system without delay. Several equivalent sufficient conditions for the existence of one descriptor dynamic controller without impulsive models are given. Furthermore the explicit expression of the desired controller is obtained. Finally one example is given to show the validity of the proposed results.

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