Stabilizing controller design for complex systems: Some new concepts and approaches

Abstract Quasi-decentralized control for complex systems is proposed in this paper. Different forms of ∼put-Output Participation Factors (IOPFs) are also introduced in this paper mainly to help to determine a suitable decentralized or, if necessary, a quasi-decentralized stabilizing scheme. IOPFs can be used to identify practically fixed modes which camiot be detected by the most existing mathematical tools, and to compare the effectiveness of different input-output pairs. The proposed concepts and approaches are illustrated by a power system stabilizer design problem for a sample system. Future research in quasi-decentralized control is also outlined.