共 31 条
Nonlinear dynamic analysis of electrostatically actuated resonant MEMS sensors under parametric excitation
被引:99
作者:
Zhang, Wen-Ming
[1
]
Meng, Guang
[1
]
机构:
[1] State Key Lab Mech Syst & Vibrat, Shanghai 200240, Peoples R China
基金:
中国国家自然科学基金;
关键词:
electrostatic force;
microelectromechanical systems (MEMS);
parametric excitation;
resonant sensor;
D O I:
10.1109/JSEN.2006.890158
中图分类号:
TM [电工技术];
TN [电子技术、通信技术];
学科分类号:
0808 ;
0809 ;
摘要:
Electrostatically actuated resonant microelectromechanical systems (MEMS) sensors have gotten significant attention due to their geometric simplicity and broad applicability. In this paper, nonlinear responses and dynamics of the electrostatically actuated MEMS resonant sensors under two-frequency parametric and external excitations are presented. The presented model and methodology enable simulation of the steady-state dynamics of electrostatic MEMS undergoing small motions. Response and dynamics of the MEMS resonator to a combination resonance are studied. The responses of the system at steady-state conditions and their stability are investigated using the method of multiple scales. The results showing the effect of varying the dc bias, the squeeze film damping, cubic stiffness, and ac excitation amplitude on the frequency response curves, resonant frequencies and nonlinear dynamic characteristics are given in detail. Frequency response, resonant frequency and peak amplitude are examined for variation of the dynamic parameters involved. This investigation provides an understanding of the nonlinear dynamic characteristics of microbeam-based resonant sensors in MEMS.
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页码:370 / 380
页数:11
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