{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,26]],"date-time":"2025-10-26T13:55:34Z","timestamp":1761486934021},"reference-count":31,"publisher":"World Scientific Pub Co Pte Lt","issue":"01","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Int. J. Bifurcation Chaos"],"published-print":{"date-parts":[[2003,1]]},"abstract":"<jats:p> Feedback coupling through an interaction term proportional to the difference in the value of some behavioral characteristics of two systems is a very common structural setting that leads to synchronization of the behavior of both systems. The degree of synchronization attained depends on the strength of the interaction term and on the mutual interdependency of the structures of both systems. In this paper, we show that two chaotic systems linked through a feedback coupling interaction term of gain parameter k reach a synchronized regime characterized by a vector of variable errors which tends towards zero with parameter k while the interaction term tends towards a finite nonzero permanent regime. This means that maintaining a certain degree of synchronization has a cost. In the limit, complete synchronization occurs at a finite limit cost. We show that feedback coupling in itself brings about conditions permitting that systems with a degree of structural parameter flexibility evolve close towards each other structures in order to facilitate the maintenance of the synchronized regime. In this paper, we deduce parameter adaptive laws for any family of homochaotic systems provided they are previously forced to work, via feedback coupling, within an appropriate degree of synchronization. The laws are global in the space of parameters and lead eventually to identical synchronization at no interaction cost. We illustrate this point with homochaotic systems from the Lorenz, R\u00f6ssler and Chua families. <\/jats:p>","DOI":"10.1142\/s0218127403006443","type":"journal-article","created":{"date-parts":[[2003,2,21]],"date-time":"2003-02-21T04:51:28Z","timestamp":1045803088000},"page":"177-191","source":"Crossref","is-referenced-by-count":41,"title":["FEEDBACK SYNCHRONIZATION OF CHAOTIC SYSTEMS"],"prefix":"10.1142","volume":"13","author":[{"given":"C.","family":"SARASOLA","sequence":"first","affiliation":[{"name":"Department of Physics of Materials,  University of the Basque Country, 20018 San Sebastian, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"F. 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