In this paper, we study the occurrence of synchronization between the two degenerate resonance modes of a microdisk resonator gyroscope. Recently, schemes involving the simultaneous actuation of the two vibration modes of the gyroscope have been implemented as a promising new method to increase their performance. However, this strategy might result in synchronization between the two modes, which would maintain frequency mode-matching but also may produce problems, such as degrading stability and sensitivity. Here, we demonstrate for the first time synchronization between the degenerate modes of a microgyroscope and show that synchronization arising from mutual coupling dramatically reduces frequency instability at the cost of increased amplitude instability. We present an alternative synchronization scheme that suppresses this drawback while still taking advantage of a passive frequency mode-match operation.
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August 2017
Research-Article
Impact of Synchronization in Micromechanical Gyroscopes
Martial Defoort,
Martial Defoort
Department of Mechanical and
Aerospace Engineering,
University of California, Davis,
1 Shields Avenue,
Davis, CA 95616
e-mail: mjdefoort@ucdavis.edu
Aerospace Engineering,
University of California, Davis,
1 Shields Avenue,
Davis, CA 95616
e-mail: mjdefoort@ucdavis.edu
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Parsa Taheri-Tehrani,
Parsa Taheri-Tehrani
Department of Mechanical and
Aerospace Engineering,
University of California, Davis,
1 Shields Avenue,
Davis, CA 95616
e-mail: ptaheri@ucdavis.edu
Aerospace Engineering,
University of California, Davis,
1 Shields Avenue,
Davis, CA 95616
e-mail: ptaheri@ucdavis.edu
Search for other works by this author on:
Sarah H. Nitzan,
Sarah H. Nitzan
Department of Mechanical and
Aerospace Engineering,
University of California, Davis,
1 Shields Avenue,
Davis, CA 95616
e-mail: sarah.nitzan@gmail.com
Aerospace Engineering,
University of California, Davis,
1 Shields Avenue,
Davis, CA 95616
e-mail: sarah.nitzan@gmail.com
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David A. Horsley
David A. Horsley
Department of Mechanical and
Aerospace Engineering,
University of California, Davis,
1 Shields Avenue,
Davis, CA 95616
e-mail: dahorsley@ucdavis.edu
Aerospace Engineering,
University of California, Davis,
1 Shields Avenue,
Davis, CA 95616
e-mail: dahorsley@ucdavis.edu
Search for other works by this author on:
Martial Defoort
Department of Mechanical and
Aerospace Engineering,
University of California, Davis,
1 Shields Avenue,
Davis, CA 95616
e-mail: mjdefoort@ucdavis.edu
Aerospace Engineering,
University of California, Davis,
1 Shields Avenue,
Davis, CA 95616
e-mail: mjdefoort@ucdavis.edu
Parsa Taheri-Tehrani
Department of Mechanical and
Aerospace Engineering,
University of California, Davis,
1 Shields Avenue,
Davis, CA 95616
e-mail: ptaheri@ucdavis.edu
Aerospace Engineering,
University of California, Davis,
1 Shields Avenue,
Davis, CA 95616
e-mail: ptaheri@ucdavis.edu
Sarah H. Nitzan
Department of Mechanical and
Aerospace Engineering,
University of California, Davis,
1 Shields Avenue,
Davis, CA 95616
e-mail: sarah.nitzan@gmail.com
Aerospace Engineering,
University of California, Davis,
1 Shields Avenue,
Davis, CA 95616
e-mail: sarah.nitzan@gmail.com
David A. Horsley
Department of Mechanical and
Aerospace Engineering,
University of California, Davis,
1 Shields Avenue,
Davis, CA 95616
e-mail: dahorsley@ucdavis.edu
Aerospace Engineering,
University of California, Davis,
1 Shields Avenue,
Davis, CA 95616
e-mail: dahorsley@ucdavis.edu
1Corresponding authors.
2Present address: Invensense, 1745 Technology Drive #200, San Jose, CA 95110.
Contributed by the Technical Committee on Vibration and Sound of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received December 3, 2016; final manuscript received February 17, 2017; published online May 30, 2017. Assoc. Editor: Slava Krylov.
J. Vib. Acoust. Aug 2017, 139(4): 040906 (7 pages)
Published Online: May 30, 2017
Article history
Received:
December 3, 2016
Revised:
February 17, 2017
Citation
Defoort, M., Taheri-Tehrani, P., Nitzan, S. H., and Horsley, D. A. (May 30, 2017). "Impact of Synchronization in Micromechanical Gyroscopes." ASME. J. Vib. Acoust. August 2017; 139(4): 040906. https://doi.org/10.1115/1.4036397
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