Class of Output Feedback Control for Nonlinear Perturbed Descriptor System

A class of output feedback control problem for nonlinear perturbed descriptor system is discussed.The aim is to design an output feedback controller.By means of linear matrix inequalities approach(LMIs),some sufficient conditions for the output feedback controller are presented.When these LMIs are feasible,explicit expressions of the output feedback controller are obtained.Finally,a numerical example is provided to demonstrate the application of the method.