Decentralized Robust H_∞ Descriptor Output Feedback Control for Singular Large-scale Systems with Uncertain Value Bound

Decentralized robust H_∞ descriptor output feedback control for singular large-scale systems with uncertain value bound is studied by matrix inequality approach.Based on the bounded real lemma,a sufficient condition for the existence of decentralized robust descriptor H_∞ output feedback controller is obtained,which is expressed as matrix inequality.Parameters of the controller are solved iteratively by homotopy method.A numerical example shows that the method is simple and effective.