Abstract
The problem of disturbance rejection by output feedback is studied for a class of nonminimum-phase nonlinear systems. We begin with a review on how a simplified solution can be derived to the global stabilization problem by output feedback. Using the simplified output feedback control scheme, together with the nonlinear regulator theory, we show that, under appropriate conditions, the disturbance rejection problem is solvable for nonminimum-phase nonlinear systems in the so-called output feedback form.
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