Nonlinearity enhanced mode localization in two coupled MEMS resonators

Liu, Zhonghua; Chen, Yuzhi; Wang, Xuefeng; Xu, Yutao; Dai, Hongsheng; Shi, Zhan; Wan, Haibo; Wei, Xueyong; Huan, Ronghua

doi:10.1016/j.ijmecsci.2024.109133

Cited by 7 publications

(1 citation statement)

References 82 publications

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“…On the other hand, due to the scale effect, micro-mechanical resonators can easily be excited into a nonlinear range [17,18]. Recently, nonlinearity has been a hot point in MEMS resonators [19,20] and promotes lots of applications [21][22][23][24]. Villanueva et al used a newly constructed oscillator with parametric feedback to achieve a wide range of adjustable oscillation frequencies, as well as reduced phase noise and improved frequency stability [25].…”

Section: Introductionmentioning

confidence: 99%

Adaptive frequency-stabilization of MEMS oscillators using mode coupling

Huan,

Dai,

Wang

et al. 2024

J. Micromech. Microeng.

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MEMS (Microelectromechanical Systems) oscillators with high frequency stability hold significant potential for a myriad of applications across diverse fields. This letter delves into an adaptive frequency stabilization system designed to significantly improve the performance of MEMS oscillators. Our approach leverages the concept of mode coupling to dynamically adjust the oscillator’s frequency based on phase control, ensuring optimal stability under varying operating conditions. The MEMS oscillator comprises a nonlinear low-frequency resonator and a linear high-frequency resonator. Through mode coupling and phase control, the nonlinearresonator is harnessed to regulate the oscillation frequency of the linear resonator. Experimental results prove that by applying the proposed approach, the frequency stability of the MEMS oscillator is enhanced by nearly 700 times for long-term stability at 1000s. Additionally, in the scenario with varying temperature, the system also effectively improves the frequency stability by over 1000 times at 802s.

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