Dasgupta, SouraAnderson, Brian D.O.2025-05-302025-05-300005-1098ORCID:/0000-0002-1493-4774/work/174739553http://www.scopus.com/inward/record.url?scp=0030264543&partnerID=8YFLogxKhttps://hdl.handle.net/1885/733754967It has recently been shown that the identification of a linear time-invariant plant using closed-loop measurements with a known linear controller can be effectively tackled by regarding the unknown plant as a member of the set of all plants stabilized by the known linear controller. This set is parametrized by a Youla-Kucera parameter, itself a stable transfer function which, it turns out, can be identified using open-loop techniques. This paper generalizes the parametrization idea to nonlinear plants, and treats identification of nonlinear plants.AcX,lr,t~lr~l~ern~nr\--S. Dasgupta was visiting the Deparb ment of Systems Engineering. Australian National Ilnivers-ity. ACT 0200. Australia, when this work was completed. His work was supported in part by NSF Grants EC-921 IS93 and H’S-Y350346. B. D. 0. Anderson, wishes to acknowledge the funding of the activities of the Cooperative Research Centre for Robust and Adaptive Systems by the Australian Commonwealth Government under the Cooperative Rc-search Centres Program.12enClosed-loop identificationCoprime factorizationNonlinearTime-varying199610.1016/0005-1098(96)00084-20030264543