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http://dx.doi.org/10.5139/JKSAS.2011.39.6.517

Electromechanical Modeling and Experimental Verification of Differential Vibrating Accelerometer  

Lee, Jung-Shin (국방과학연구소)
Rhim, Jae-Wook (국방과학연구소)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.39, no.6, 2011 , pp. 517-525 More about this Journal
Abstract
Differential Vibrating Accelerometer(DVA) is a small and accurate resonant device to sense the change in natural frequency in presence of acceleration input. Both mathematical modeling for the electromechanical dynamics and experimental investigation on the structural characteristics are necessary for effective designs of precision controller and high Q-factor structure. In this paper, electromechanical modeling of the resonator of DVA, electrode module, and pre-amplifier is presented. The presented method is experimentally verified by measuring the resonance frequency, effective mass, effective stiffness and Q-factor. The direct comparison of the calculated displacement and the actual pre-amplifier of DVA also indicates the effectiveness of this study.
Keywords
Differential Vibrating Accelerometer; Electromechanical Modeling; Resonance frequency;
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