Robust decentralized controller design for large scale systems

The paper addresses the problem of the robust output feedback PI controller design for complex large-scale systems with state output decentralized structure. The proposed design method is based on the Generalized Geršgorin Theorem and the V-K iteration method to design robust PI controller guaranteeing feasible performance achieved in subsystems for the full system and therefore the proposed method excludes limit of system order in BMI solution. Finally, numerical example is given to illustrate the effectiveness of the proposed method.