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Journal of Process Control, Vol.12, No.6, 667-686, 2002
Nonlinear feedback control of multivariable non-minimum-phase processes
A new method of controlling nonlinear processes with a non-mininium-phase delay-free part is presented. Two control laws are derived for stable, multiple-input multiple-output processes. They are obtained by requesting an approximately linear. input-output response and exploiting the connections between model-predictive control and input-output linearization. Conditions under which the closed-loop system is asymptotically stable are given. The application and performance of the control laws are illustrated using numerical simulation of two chemical reactor examples that exhibit non-minimum-phase behavior.
Keywords:nonlinear control;state feedback design;input-output linearization;zero dynamics;non-minimum-phase systems;model-based control