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Robust output regulation with nonlinear exosystems. (English) Zbl 1086.93013
Summary: For over a decade, the solvability of the nonlinear robust output regulation problem relies on the assumption that the exosystem is linear and neutrally stable. Thus, the only exogenous signal that can be accommodated by the existing theory is a combination of finitely many step functions and sinusoidal functions. In this paper, we will show that it is possible to find controllers that can admit exogenous signals produced by nonlinear exosystems. An example with the well known van der Pol oscillator as the exosystem is given to illustrate our approach.

MSC:
93B35 Sensitivity (robustness)
93C15 Control/observation systems governed by ordinary differential equations
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