Delay-dependent Guaranteed Cost Control for Uncertain Discrete Time-delay Systems via Dynamic Output Feedback

This paper considers the problem of delay-dependent guaranteed cost controller design for uncertain discrete time-delay systems via dynamic output feedback.By representing the time-delay systems in the descriptor form and using a method for processing the bounds of cross products of vectors,a delay-dependent sufficient condition for the existence of the guaranteed cost output-feedback controller is presented in terms of linear matrix inequalities.An example is given to show the efficiency of our design method.