Enhancing the sensitivity of a resonant accelerometer

Mahmoud I. Ibrahim; Mohammad I. Younis

doi:10.1115/IMECE2008-67544

Enhancing the sensitivity of a resonant accelerometer

Mahmoud I. Ibrahim, Mohammad I. Younis

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

3 Scopus citations

Abstract

This paper presents an investigation on the sensitivity enhancement of a resonant accelerometer by operating it in the nonlinear regime. The accelerometer is excited by a DC load superimposed to an AC harmonic load. The electric load is tuned such that the accelerometer is driven at primary resonance with a softening-type behavior. Upon the application of a small acceleration, the nonlinear resonance frequency of the accelerometer shifts to a smaller value. This frequency shift is used as an indication for the detected acceleration. This shift is much larger compared to the shift of the resonance frequency of the accelerometer when operating in the linear regime. The concept of the nonlinear excitation is demonstrated by simulation on a commercial capacitive accelerometer. A nonlinear single-degree-of-freedom (SDOF) system is used to model the accelerometer. Several results are shown for the effect of the DC and AC voltages on enhancing the sensitivity of the accelerometer.

Original language	English (US)
Title of host publication	2008 Proceedings of the ASME International Mechanical Engineering Congress and Exposition, IMECE 2008
Pages	241-247
Number of pages	7
Volume	11
DOIs	https://doi.org/10.1115/IMECE2008-67544
State	Published - 2009
Externally published	Yes
Event	2008 ASME International Mechanical Engineering Congress and Exposition, IMECE 2008 - Boston, MA, United States Duration: Oct 31 2008 → Nov 6 2008

Other

Other	2008 ASME International Mechanical Engineering Congress and Exposition, IMECE 2008
Country/Territory	United States
City	Boston, MA
Period	10/31/08 → 11/6/08

ASJC Scopus subject areas

Mechanical Engineering

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10.1115/IMECE2008-67544

Cite this

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title = "Enhancing the sensitivity of a resonant accelerometer",

abstract = "This paper presents an investigation on the sensitivity enhancement of a resonant accelerometer by operating it in the nonlinear regime. The accelerometer is excited by a DC load superimposed to an AC harmonic load. The electric load is tuned such that the accelerometer is driven at primary resonance with a softening-type behavior. Upon the application of a small acceleration, the nonlinear resonance frequency of the accelerometer shifts to a smaller value. This frequency shift is used as an indication for the detected acceleration. This shift is much larger compared to the shift of the resonance frequency of the accelerometer when operating in the linear regime. The concept of the nonlinear excitation is demonstrated by simulation on a commercial capacitive accelerometer. A nonlinear single-degree-of-freedom (SDOF) system is used to model the accelerometer. Several results are shown for the effect of the DC and AC voltages on enhancing the sensitivity of the accelerometer.",

author = "Ibrahim, {Mahmoud I.} and Younis, {Mohammad I.}",

year = "2009",

doi = "10.1115/IMECE2008-67544",

language = "English (US)",

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volume = "11",

pages = "241--247",

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Ibrahim, MI & Younis, MI 2009, Enhancing the sensitivity of a resonant accelerometer. in 2008 Proceedings of the ASME International Mechanical Engineering Congress and Exposition, IMECE 2008. vol. 11, pp. 241-247, 2008 ASME International Mechanical Engineering Congress and Exposition, IMECE 2008, Boston, MA, United States, 10/31/08. https://doi.org/10.1115/IMECE2008-67544

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AU - Younis, Mohammad I.

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N2 - This paper presents an investigation on the sensitivity enhancement of a resonant accelerometer by operating it in the nonlinear regime. The accelerometer is excited by a DC load superimposed to an AC harmonic load. The electric load is tuned such that the accelerometer is driven at primary resonance with a softening-type behavior. Upon the application of a small acceleration, the nonlinear resonance frequency of the accelerometer shifts to a smaller value. This frequency shift is used as an indication for the detected acceleration. This shift is much larger compared to the shift of the resonance frequency of the accelerometer when operating in the linear regime. The concept of the nonlinear excitation is demonstrated by simulation on a commercial capacitive accelerometer. A nonlinear single-degree-of-freedom (SDOF) system is used to model the accelerometer. Several results are shown for the effect of the DC and AC voltages on enhancing the sensitivity of the accelerometer.

AB - This paper presents an investigation on the sensitivity enhancement of a resonant accelerometer by operating it in the nonlinear regime. The accelerometer is excited by a DC load superimposed to an AC harmonic load. The electric load is tuned such that the accelerometer is driven at primary resonance with a softening-type behavior. Upon the application of a small acceleration, the nonlinear resonance frequency of the accelerometer shifts to a smaller value. This frequency shift is used as an indication for the detected acceleration. This shift is much larger compared to the shift of the resonance frequency of the accelerometer when operating in the linear regime. The concept of the nonlinear excitation is demonstrated by simulation on a commercial capacitive accelerometer. A nonlinear single-degree-of-freedom (SDOF) system is used to model the accelerometer. Several results are shown for the effect of the DC and AC voltages on enhancing the sensitivity of the accelerometer.

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BT - 2008 Proceedings of the ASME International Mechanical Engineering Congress and Exposition, IMECE 2008

T2 - 2008 ASME International Mechanical Engineering Congress and Exposition, IMECE 2008

Y2 - 31 October 2008 through 6 November 2008

ER -

Enhancing the sensitivity of a resonant accelerometer

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