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OALib Journal期刊
ISSN: 2333-9721
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Pulse and Step Signal Response Models of Micro-Accelerometers Based on the Comb Gaps Deviation
基于梳齿间距偏差的硅微加速度计冲击与阶跃信号响应模型

Keywords: micro-accelerometers,comb gap,pulse and step signal response models,reliable operation range
微加速度计
,梳齿间距,冲击与阶跃信号响应物理模型,可靠工作范围

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Abstract:

Based on probability and statistical theory,pulse and step acceleration signal response models of capacitive micro-accelerometer with single-sided driving mode and double-sided driving mode are investigated,respectively,which are established on the assumption that the comb gaps conform to the uniform distribution within a given scope induced by the MEMS processing non-ideality.The precision of the models has been verified by the FEA and monte carlo methods with ANSYS software.The deviation between them is less than 10%.The models suggest that the reliable operation ranges of the accelerometers will decrease 10%~15% when the comb gaps deviate 0~20% from the ideal value.The models can be used in the estimation of the reliable operation ranges of capacitive accelerometers.

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