Title:
AN ESTIMATOR FOR DETERMINING RESONANT FREQUENCY AND Q
Document Type and Number:
WIPO Patent Application WO2003034005
Kind Code:
A3
Abstract:
The resonant frequency of a device is determined by energizing the device with a short burst of energy to produce a decaying sinusoidal output, determining coefficients of a linear difference equation characterizing the decaying sinusoidal output by use of a least-mean-square fit, and determining the resonant frequency from the coefficients. The Q of the device can be determining from a decay parameter of the envelope of the decaying sinusoidal output and from the resonant frequency.
Inventors:
WHITE STANLEY A
Application Number:
PCT/US2002/032758
Publication Date:
July 03, 2003
Filing Date:
October 15, 2002
Export Citation:
Assignee:
HONEYWELL INT INC (US)
International Classes:
G01C19/56; G01C25/00; G01H13/00; G01P21/00; (IPC1-7): G01C19/56; G01C25/00; G01P21/00
Other References:
RUBIO C ET AL: "Transfer function determination of micromechanical structures using a time domain analysis and resonance method", SENSORS AND ACTUATORS A, ELSEVIER SEQUOIA S.A., LAUSANNE, CH, vol. 46, no. 1/3, 1995, pages 58 - 61, XP004005057, ISSN: 0924-4247
KAPUCU S ET AL: "Tutorial note on the identification of linear mechanical systems", MECHATRONICS, PERGAMON PRESS, OXFORD, GB, vol. 7, no. 3, 1 April 1997 (1997-04-01), pages 297 - 313, XP004064846, ISSN: 0957-4158
BOCHOBZA-DEGANI O ET AL: "A novel micromachined vibrating rate-gyroscope with optical sensing and electrostatic actuation", SENSORS AND ACTUATORS A, ELSEVIER SEQUOIA S.A., LAUSANNE, CH, vol. 83, no. 1-3, May 2000 (2000-05-01), pages 54 - 60, XP004198293, ISSN: 0924-4247
KAPUCU S ET AL: "Tutorial note on the identification of linear mechanical systems", MECHATRONICS, PERGAMON PRESS, OXFORD, GB, vol. 7, no. 3, 1 April 1997 (1997-04-01), pages 297 - 313, XP004064846, ISSN: 0957-4158
BOCHOBZA-DEGANI O ET AL: "A novel micromachined vibrating rate-gyroscope with optical sensing and electrostatic actuation", SENSORS AND ACTUATORS A, ELSEVIER SEQUOIA S.A., LAUSANNE, CH, vol. 83, no. 1-3, May 2000 (2000-05-01), pages 54 - 60, XP004198293, ISSN: 0924-4247
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