This paper reports the experimental system identification of the Jet Propulsion Laboratory MEMS vibratory rate gyroscope. A primary objective is to estimate the orientation of the stiffness matrix principal axes for important sensor dynamic modes with respect to the electrode pick-offs in the sensor. An adaptive lattice filter is initially used to identify a high-order two-input/two-output transfer function describing the input/output dynamics of the sensor. A three-mode model is then developed from the identified input/output model to determine the axes’ orientation. The identified model, which is extracted from only two seconds of input/output data, also yields the frequency split between the sensor’s modes that are exploited in detecting the rotation rate. The principal axes’ orientation and frequency split give direct insight into the source of quadrature measurement error that corrupts detection of the sensor’s angular rate.
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e-mail: rtm@obsidian.seas.ucla.edu
e-mail: gibson@seas.ucla.edu
e-mail: huij@seas.ucla.edu
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June 2001
Technical Papers
System Identification of a MEMS Gyroscope
Robert T. M’Closkey, Assistant Professor,
e-mail: rtm@obsidian.seas.ucla.edu
Robert T. M’Closkey, Assistant Professor
Mechanical and Aerospace Engineering Department University of California Los Angeles, CA 90095-1597
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Steve Gibson, Professor,
e-mail: gibson@seas.ucla.edu
Steve Gibson, Professor
Mechanical and Aerospace Engineering Department University of California Los Angeles, CA 90095-1597
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Jason Hui, Graduate Research Assistant
e-mail: huij@seas.ucla.edu
Jason Hui, Graduate Research Assistant
Mechanical and Aerospace Engineering Department University of California Los Angeles, CA 90095-1597
Search for other works by this author on:
Robert T. M’Closkey, Assistant Professor
Mechanical and Aerospace Engineering Department University of California Los Angeles, CA 90095-1597
e-mail: rtm@obsidian.seas.ucla.edu
Steve Gibson, Professor
Mechanical and Aerospace Engineering Department University of California Los Angeles, CA 90095-1597
e-mail: gibson@seas.ucla.edu
Jason Hui, Graduate Research Assistant
Mechanical and Aerospace Engineering Department University of California Los Angeles, CA 90095-1597
e-mail: huij@seas.ucla.edu
Contributed by the Dynamic Systems and Control Division for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received by the Dynamic Systems and Control Division June 10, 1999. Associate Editor: S. Fassois.
J. Dyn. Sys., Meas., Control. Jun 2001, 123(2): 201-210 (10 pages)
Published Online: June 10, 1999
Article history
Received:
June 10, 1999
Citation
M’Closkey, R. T., Gibson, S., and Hui, J. (June 10, 1999). "System Identification of a MEMS Gyroscope ." ASME. J. Dyn. Sys., Meas., Control. June 2001; 123(2): 201–210. https://doi.org/10.1115/1.1369360
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