Su, W.Qiu, L.Petersen, I. R.2026-06-282026-06-280780383524ORCID:/0000-0003-4856-9450/work/218841668https://hdl.handle.net/1885/733812211This work extends some recent results on performance limitations of a feedback system in tracking certain reference signals to the case when external disturbances and plant uncertainties are present.2enPublisher Copyright: © 2003 SICE.Nonminimum phasePerformance limitationPerturbationTrackingUncertainty200384945200152