Savkin, Andrey V.Petersen, Ian R.2026-07-032026-07-030020-7721ORCID:/0000-0003-4856-9450/work/219177663https://hdl.handle.net/1885/733812460This paper considers the problem of constructing a linear dynamic output feedback controller such that when applied to a given uncertain system, the resulting closed-loop uncertain system is globally uniformly ultimately bounded. The uncertain systems under consideration contain multiple uncertain nonlinearities, each subject to a non-homogeneous norm bound condition. The approach taken is to apply standard results from HK control theory to the problem. The main result is a sufficient condition for the existence of such a controller. This condition is given in terms of the existence of suitable solutions to a pair of parameter-dependent algebraic Riccati equations.This work was supported by the Australian Research Council.5en199610.1080/002077296089292530030170235