{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,8]],"date-time":"2026-07-08T06:00:46Z","timestamp":1783490446254,"version":"3.55.0"},"reference-count":21,"publisher":"Elsevier BV","issue":"5","license":[{"start":{"date-parts":[[1984,9,1]],"date-time":"1984-09-01T00:00:00Z","timestamp":462844800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Automatica"],"published-print":{"date-parts":[[1984,9]]},"DOI":"10.1016\/0005-1098(84)90009-8","type":"journal-article","created":{"date-parts":[[2003,3,14]],"date-time":"2003-03-14T08:27:27Z","timestamp":1047630447000},"page":"583-594","source":"Crossref","is-referenced-by-count":530,"title":["Instability analysis and improvement of robustness of adaptive control"],"prefix":"10.1016","volume":"20","author":[{"given":"P.A.","family":"Ioannou","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P.V.","family":"Kokotovic","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/0005-1098(84)90009-8_BIB1","series-title":"Proceedings of the 21st IEEE Conference on Decision and Control","article-title":"Exponential convergence and persistent excitation","author":"Anderson","year":"1982"},{"key":"10.1016\/0005-1098(84)90009-8_BIB2","article-title":"Analysis of Rohrs counterexamples to adaptive control","author":"\u00c5str\u00f6m","year":"1983","journal-title":"Department of Automatic Control, Lund Institute of Technology Report"},{"key":"10.1016\/0005-1098(84)90009-8_BIB3","series-title":"Proceedings of the IFAC Workshop on Adaptive Systems in Control and Signal Processing","article-title":"Hopf bifurcation in an adaptive system with unmodeled dynamics","author":"Cyr","year":"1983"},{"key":"10.1016\/0005-1098(84)90009-8_BIB4","series-title":"Proc. JACC","article-title":"Stability analysis of adaptive control systems with disturbances","author":"Egardt","year":"1980"},{"key":"10.1016\/0005-1098(84)90009-8_BIB5","article-title":"An asymptotic error analysis of identifiers and adaptive observers in the presence of parasitics","volume":"AC-27","author":"Ioannou","year":"1982","journal-title":"IEEE Trans. Aut. Control"},{"key":"10.1016\/0005-1098(84)90009-8_BIB6","author":"Ioannou","year":"1983"},{"key":"10.1016\/0005-1098(84)90009-8_BIB7","doi-asserted-by":"crossref","DOI":"10.1109\/TAC.1984.1103490","article-title":"Robust redesign of adaptive control","volume":"29","author":"Ioannou","year":"1984","journal-title":"IEEE Trans. Aut. Control"},{"key":"10.1016\/0005-1098(84)90009-8_BIB8","article-title":"On the robustness of output feedback control methods to modeling errors","volume":"AC-26","author":"Khalil","year":"1981","journal-title":"IEEE Trans. Aut. Control"},{"key":"10.1016\/0005-1098(84)90009-8_BIB9","doi-asserted-by":"crossref","first-page":"123","DOI":"10.1016\/0005-1098(76)90076-5","article-title":"Singular perturbations and order reduction in control theory\u2014An overview","volume":"12","author":"Kokotovic","year":"1976","journal-title":"Automatica"},{"key":"10.1016\/0005-1098(84)90009-8_BIB10","series-title":"Proceedings of the IFAC Workshop on Adaptive Systems in Control and Signal Processing","article-title":"Robustness issues in adaptive control","author":"Kosut","year":"1983"},{"key":"10.1016\/0005-1098(84)90009-8_BIB11","series-title":"Proceedings of the 21st IEEE Conference on Decision and Control","article-title":"Performance robustness properties of adaptive control systems","author":"Kosut","year":"1982"},{"key":"10.1016\/0005-1098(84)90009-8_BIB12","article-title":"On adaptive state regulation","volume":"AC-27","author":"Kreisselmeier","year":"1982","journal-title":"IEEE Trans. Aut. Control"},{"key":"10.1016\/0005-1098(84)90009-8_BIB13","doi-asserted-by":"crossref","first-page":"1169","DOI":"10.1109\/TAC.1982.1103093","article-title":"Stable model reference adaptive control in the presence of bounded disturbances","volume":"AC-27","author":"Kreisselmeier","year":"1982","journal-title":"IEEE Trans. Aut. Control"},{"key":"10.1016\/0005-1098(84)90009-8_BIB14","article-title":"Stable adaptive controller design\u2014Direct control","volume":"AC-23","author":"Narendra","year":"1978","journal-title":"IEEE Trans. Aut. Control"},{"key":"10.1016\/0005-1098(84)90009-8_BIB15","series-title":"Proceedings of the IFAC Workshop on Adaptive Systems in Control and Signal Processing","article-title":"On the model-process mismatch tolerance of various parameter adaptation algorithms in direct control schemes: A sectoricity approach","author":"Ortega","year":"1983"},{"key":"10.1016\/0005-1098(84)90009-8_BIB16","doi-asserted-by":"crossref","first-page":"1161","DOI":"10.1109\/TAC.1982.1103112","article-title":"Bounded error adaptive control","volume":"AC-27","author":"Peterson","year":"1982","journal-title":"IEEE Trans. Aut. Control"},{"key":"10.1016\/0005-1098(84)90009-8_BIB17","series-title":"Proceedings of the IFAC Workshop on Adaptive Systems in Control and Signal Processing","article-title":"Robustness of indirect adaptive control based on pole placement design","author":"Praly","year":"1983"},{"key":"10.1016\/0005-1098(84)90009-8_BIB18","series-title":"Proceedings of the 20th IEEE Conference on Decision and Control","article-title":"Analytical verification of undesirable properties of direct model reference adaptive control algorithms","author":"Rohrs","year":"1981"},{"key":"10.1016\/0005-1098(84)90009-8_BIB19","series-title":"Preprints of the 21st IEEE Conference on Decision and Control","article-title":"Robustness of adaptve control algorithms in the presence of unmodeled dynamics","author":"Rohrs","year":"1982"},{"key":"10.1016\/0005-1098(84)90009-8_BIB20","doi-asserted-by":"crossref","first-page":"81","DOI":"10.1016\/0005-1098(83)90077-8","article-title":"Stability analysis of adaptively controlled systems subject to bounded disturbances","volume":"19","author":"Samson","year":"1983","journal-title":"Automatica"},{"key":"10.1016\/0005-1098(84)90009-8_BIB21","article-title":"Stability theory and the existence of periodic solutions and almost periodic solutions","volume":"Vol. 14","author":"Yoshizawa","year":"1975"}],"container-title":["Automatica"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0005109884900098?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0005109884900098?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2019,3,26]],"date-time":"2019-03-26T19:22:34Z","timestamp":1553628154000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/0005109884900098"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1984,9]]},"references-count":21,"journal-issue":{"issue":"5","published-print":{"date-parts":[[1984,9]]}},"alternative-id":["0005109884900098"],"URL":"https:\/\/doi.org\/10.1016\/0005-1098(84)90009-8","relation":{},"ISSN":["0005-1098"],"issn-type":[{"value":"0005-1098","type":"print"}],"subject":[],"published":{"date-parts":[[1984,9]]}}}