A Study on Performance Improvement of Natural Synchronization Scheme Base on Noise-Induced Synchronization Theory

Abstract

The phases of nonlinear limit-cycle oscillators can be synchronized by adding identical noise sequence to each of them, which is called noise-induced synchronization. In our previous researches, we have shown that the nonlinear oscillators synchronize even by adding natural environmental noise or fluctuations. Because the natural fluctuations, such as temperature, humidity and sounds, measured by the sensors located in nearby have high cross-correlation, the oscillators installed in independent devices can be synchronized by those natural signals. In this paper, we investigate the synchronization performance with changing the parameters of our proposed method, such as the noise input amplitude and the input interval. Our experimental results show that strong noise is effective for quick synchronization and weak noise is effective for sustention of the synchronization, and the performance of the natural synchronization can be improved by tuning the parameters.