Semi-global nonlinear output regulation with adaptive internalmodel
Serrani, A.; Isidori, A.; Marconi, L.
Automatic Control, IEEE Transactions on
Volume 46, Issue 8, Aug 2001 Page(s):1178 - 1194
Digital Object Identifier 10.1109/9.940923
Summary:We address the problem of output regulation for nonlinear systems
driven by a linear, neutrally stable exosystem whose frequencies are not
known a priori. We present a classical solution in terms of the parallel
connection of a robust stabilizer and an internal model, where the
latter is adaptively tuned to the device that reproduces the
steady-state control necessary to maintain the output-zeroing condition.
We obtain robust regulation (i.e. in presence of parameter
uncertainties) with a semi-global domain of convergence for a
significant class of nonlinear minimum-phase system
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