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Some issues in decentralized control of nonlinear systems

By: Schoenwald, D.A.; Ozguner, U.;

1991 / IEEE / 0-7803-0450-0


This item was taken from the IEEE Periodical ' Some issues in decentralized control of nonlinear systems ' The authors present two results on controlling nonlinear systems via decentralized feedback. They begin with a method for observing the system state at a particular input/output port by closing the loop with output feedback at the other input/output ports. The conditions for observing the state with linearized error dynamics are met by choosing the output feedback functions to satisfy the local observability conditions. They also examined a system with nonlinear subsystems and nonlinear interconnections. For this class of systems, a local feedback linearizing controller is proposed, and a linear state feedback law which compensates for the interconnections resulting in exponential stability of the system is given.<>