期刊
PHYSICS LETTERS A
卷 366, 期 6, 页码 585-590出版社
ELSEVIER
DOI: 10.1016/j.physleta.2007.05.014
关键词
amplitude death; coupled systems; time delay; feedback control
The present Letter deals with amplitude death in chaotic map lattices coupled with a diffusive delay connection. It is shown that if a fixed point of the individual map satisfies an odd-number property, then amplitude death never occurs at the fixed point for any number of the maps, coupling strength, and delay time. From the viewpoint of engineering applications that utilize oscillatory behavior in coupled oscillators, death would be undesirable. This Letter proposes a feedback controller, which is added to each chaotic map, such that the fixed point of the individual map satisfies the odd-number property. Accordingly, it is guaranteed that death never occurs in the controlled chaotic-map-lattice. It is verified that the proposed controller works well in numerical simulations. (c) 2007 Elsevier B.V. All rights reserved.
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