Feedback-controlled dynamics in a two-dimensional array of active elements.
Feedback-controlled dynamics in a two-dimensional array of active elements.
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活动元件二维阵列中的反馈控制动力学。
DOI：
10.1103/physreve.80.026215
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
K. Miyakawa
中科院分区：
文献类型：
--
作者：
T. Okano;K. Miyakawa
我们调查的集体行为，在一个二维阵列的有源元件控制的时间延迟反馈，其中的元素是通过本地化的Belousov-Zhabotinsky反应在凝胶基质。我们证明，空间和时间的相干性可以有效地控制通过改变反馈参数，如时间延迟和增益。当反馈增益足够高时，出现了时间相干性低的完全同步状态，这可能是仅由延迟反馈引起的状态。实验结果近似再现在一个强制Oregonator反应扩散模型的数值模拟。
We investigate collective behaviors in a two-dimensional array of active elements controlled by time-delayed feedback, where elements are prepared by localizing the Belousov-Zhabotinsky reaction in a gel matrix. We demonstrate that both the spatial and temporal coherence can be effectively controlled by varying feedback parameters, such as the time delay and the gain. For a sufficiently high feedback gain, the fully synchronized state with low temporal coherence appears, which might be the state induced only by the delay feedback. Experimental results are approximately reproduced in a numerical simulation with a forced Oregonator reaction-diffusion model.