Single-crystal silicon gyroscope with decoupled drive and sense

Scott G. Adams; James Groves; Kevin A. Shaw; Timothy J. Davis; Dan Cardarelli; Raymond Carroll; Joseph G. Walsh; Mark D. Fontanella

doi:10.1117/12.360511

31 August 1999 Single-crystal silicon gyroscope with decoupled drive and sense

Scott G. Adams, James Groves, Kevin A. Shaw, Timothy J. Davis, Dan Cardarelli, Raymond Carroll, Joseph G. Walsh, Mark D. Fontanella

Author Affiliations +

Proceedings Volume 3876, Micromachined Devices and Components V; (1999) https://doi.org/10.1117/12.360511
Event: Symposium on Micromachining and Microfabrication, 1999, Santa Clara, CA, United States

Abstract

We present preliminary results for a single-crystal silicon gyroscope with decoupled drive and sense oscillators. The gyroscope is fabricated using a plasma micromachining process on a six-inch MEMS production line at Kionix, Inc. The process yields high-aspect-ratio structures, large structure-to- substrate separation, and low-parasitic electrodes, unlike designs that rely on silicon-on-insulator substrates, polysilicon, or thick epitaxial layers. We describe the fabrication process and emphasize the design, operation, and testing of the sensor. Results to date have yielded resolutions of 0.15 deg/sec over a 100 Hz bandwidth, short term bias stabilities less than 100 deg/hr, and quadrature signals less than 25 deg/sec.

Citation Download Citation

Scott G. Adams, James Groves, Kevin A. Shaw, Timothy J. Davis, Dan Cardarelli, Raymond Carroll, Joseph G. Walsh, and Mark D. Fontanella "Single-crystal silicon gyroscope with decoupled drive and sense", Proc. SPIE 3876, Micromachined Devices and Components V, (31 August 1999); https://doi.org/10.1117/12.360511

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