DecentralizedH^∞ Control of Large-Scale Systems

Abstract

This paper considers decentralizedH^∞control problems for large-scale interconnected systems, the information structure constraints of which are conformable to the subsystems. Both output feedback and state feedback are dealt with. The design of localH^∞controllers involves solving two algebraic Riccati equations of the subsystem dimensions. Sufficient conditions on the interconnections among subsystems are presented for desiredH^∞ attenuation bounds to be achieved from the overall disturbance inputs to the overall controlled outputs by localH^∞controllers.