A novel nonlinear amplitude-modulation gyroscope incorporating internal resonance

We are presenting the design and the preliminary numerical and experimental analyses of two mismatched Coriolis vibratory gyroscopes incorporating nonlinear modal interaction. A novel double-H design includes two clamped-clamped beams and a suspended mass in the middle connected to the base beams vi...

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Published in:arXiv.org 2017-01
Main Authors: S Amir Mousavi Lajimi, Noori, Navid, Marzouk, Amr, Bahreyni, Behraad, Golnaraghi, Farid
Format: Article
Language:English
Subjects:
Cantilever beams
Finite element method
T shape
Vibratory gyroscopes
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Noori, Navid
Marzouk, Amr
Bahreyni, Behraad
Golnaraghi, Farid
description We are presenting the design and the preliminary numerical and experimental analyses of two mismatched Coriolis vibratory gyroscopes incorporating nonlinear modal interaction. A novel double-H design includes two clamped-clamped beams and a suspended mass in the middle connected to the base beams via four short cantilevers. Another design is a T-shaped gyro including a primary doubly-clamped beam and a secondary sense beam. A combination of analytical, finite element, and experimental analyses are employed to study the characteristics of the nonlinear gyro. The drive mode matches the structure's second mode, while the sense mode matches the fundamental mode of the structure. Our preliminary study indicates that the bandwidth and the sensitivity of the rotation rate sensor are improved by employing the nonlinear modal interaction.
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subjects Cantilever beams
Finite element method
T shape
Vibratory gyroscopes
title A novel nonlinear amplitude-modulation gyroscope incorporating internal resonance
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