Shi Zhan, Lv Qiangfeng, Fu Mengqi, Wang Xuefeng, Huang Zhilong, Wei Xueyong, Amabili Marco, Huan Ronghua
Department of Mechanics, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Zhejiang University, Hangzhou 310027, China.
School of Engineering, Westlake University, Hangzhou 310030, China.
Sci Adv. 2025 Aug;11(31):eadx1338. doi: 10.1126/sciadv.adx1338. Epub 2025 Aug 1.
Synchronization underpins coherence in natural and engineered systems, unifying dynamics and countering noise while remaining vulnerable to disturbances threatening the stability and risking desynchronization. Here, we present a counterintuitive approach: harnessing noise to dilute the energy of unwanted fluctuations from external disturbances, thereby enhancing stability while preserving synchronization through the system's inherent noise suppression at the synchronized frequency. Through experiments with micromechanical oscillators and macroscale rotors, combined with stochastic averaging analysis, we show that this noise dilution effect improves synchronization efficiency, bolsters resistance to interference, and enhances long-term frequency stability. These findings position white noise of appropriate intensity as a dilution element for mitigating unwanted disturbances, providing previously unidentified insights into stability and resilience in complex synchronized systems.
同步是自然系统和工程系统中一致性的基础，它统一动态并对抗噪声，同时仍易受到威胁稳定性并有可能导致失步的干扰影响。在此，我们提出一种违反直觉的方法：利用噪声来稀释外部干扰产生的有害波动的能量，从而通过系统在同步频率下固有的噪声抑制来增强稳定性并保持同步。通过对微机械振荡器和宏观转子进行实验，并结合随机平均分析，我们表明这种噪声稀释效应提高了同步效率，增强了抗干扰能力，并提高了长期频率稳定性。这些发现将适当强度的白噪声定位为减轻有害干扰的稀释元素，为复杂同步系统中的稳定性和恢复力提供了前所未有的见解。
