Frequency latching in nonlinear micromechanical resonators

被引：18
|
作者：
Wei, Xueyong [1 ]
Zhang, Tianyi [1 ]
Jiang, Zhuangde [1 ]
Ren, Juan [2 ]
Huan, Ronghua [3 ]
机构：
[1] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China
[2] Changan Univ, Sch Construct Machinery, Xian 710064, Peoples R China
[3] Zhejiang Univ, Dept Mech, Hangzhou 310027, Zhejiang, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2017年 / 110卷 / 14期
基金：
中国国家自然科学基金;
关键词：
17;
D O I：
10.1063/1.4979829
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The resonance frequency of a nonlinear micromechanical resonator has a dependence on its modal amplitude known as the A-f effect. Here, we experimentally demonstrated that the A-f effect can be limited by the mode interaction in micromechanical resonators. The clamped-clamped beam resonator investigated in this work has a nonlinear in-plane (IP) vibration mode and a linear outof- plane (OOP) vibration mode. In the case of single ended driving with various Vdc, the resonance frequency of the IP mode tuned through the A-f effect reaches that of the OOP mode and is limited by the OOP mode due to the modal interaction and electrostatic softening effect. In the case of double ended driving, however, the resonance frequency of the IP mode is latched to that of the OOP mode after A-f tuning and a frequency stabilized region is observed. A theoretical model is also put forward to explain this phenomenon through numerical simulations. Published by AIP Publishing.
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页数：4
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