{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,9]],"date-time":"2026-03-09T12:34:48Z","timestamp":1773059688731,"version":"3.50.1"},"reference-count":17,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2015,8,3]],"date-time":"2015-08-03T00:00:00Z","timestamp":1438560000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>In this paper, the problem of robust control of nonlinear fractional-order systems in the presence of uncertainties and external disturbance is investigated. Fuzzy logic systems are used for estimating the unknown nonlinear functions. Based on the fractional Lyapunov direct method and some proposed Lemmas, an adaptive fuzzy controller is designed. The proposed method can guarantee all the signals in the closed-loop systems remain bounded and the tracking errors converge to an arbitrary small region of the origin. Lastly, an illustrative example is given to demonstrate the effectiveness of the proposed results.<\/jats:p>","DOI":"10.3390\/e17085580","type":"journal-article","created":{"date-parts":[[2015,8,5]],"date-time":"2015-08-05T03:18:55Z","timestamp":1438744735000},"page":"5580-5592","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":48,"title":["Adaptive Fuzzy Control for Nonlinear Fractional-Order Uncertain Systems with Unknown Uncertainties and External Disturbance"],"prefix":"10.3390","volume":"17","author":[{"given":"Ling","family":"Li","sequence":"first","affiliation":[{"name":"School of Economics and Management, Huainan Normal University 238 Dongshan West Road, Huainan 232038, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4510-9192","authenticated-orcid":false,"given":"Yeguo","family":"Sun","sequence":"additional","affiliation":[{"name":"School of Finance, Huainan Normal University 238 Dongshan West Road, Huainan 232038, China"}]}],"member":"1968","published-online":{"date-parts":[[2015,8,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"685","DOI":"10.1016\/j.chaos.2005.04.037","article-title":"A note on the fractional-order Chen system","volume":"27","author":"Lu","year":"2006","journal-title":"Chaos Solitons Fractals"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1730","DOI":"10.1016\/j.automatica.2010.06.038","article-title":"Pseudo-state feedback stabilization of commensurate fractional order systems","volume":"46","author":"Farges","year":"2010","journal-title":"Automatica"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"152","DOI":"10.1109\/TAC.2009.2033738","article-title":"Robust Stability and of Fractional-Order Interval Systems with the Fractional Order \u03b1: The 0 < \u03b1 < 1 Case","volume":"55","author":"Lu","year":"2010","journal-title":"IEEE Trans. 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