NEW CONDITIONS FOR OUTPUT FEEDBACK DECOUPLING

Document Type : Original Article

Author

Department of Mechanical Engineering, The University of Wisconsin--Milwaukee. P. O. Box 784, Milwaukee, Wisconsin 53211. This work is supported by the National Science Foundation Grant #MEA 83-07310.

Abstract

New necessary and sufficient conditions for decoupling of multivariable systems by constant precompensation and output feedback are derived in both the frequency and time domains. The conditions, given in terms of the open loop parameters of the system, are simple and do not require prior knowledge of a state feedback decoupling compensator. Together with these conditions a complete characterization of the decoupling compensators is given.