DECENTRALIZED ROBUST-CONTROL OF DECOMPOSED UNCERTAIN INTERCONNECTED SYSTEMS

In this paper, a new design technique of decentralized robust controll ers for a class of uncertain interconnected system is provided. The in terconnection matrices and the uncertainties of the system are decompo sed into a matched and a mismatched portions. Since the matched portio n can always be compensated by feedback controls, this new technique c an provide local controllers to withstand strong interconnections and large uncertainties. The relations among local feedback gains, uncerta inty bounds, and interconnection strength are established to aid the r obust controller design. A practical system with simulation results is given to exemplify the implementation of the controller design techni que.