CA2272556A1 - Guard bands for tuning fork gyroscopes - Google Patents

Guard bands for tuning fork gyroscopes Download PDF

Info

Publication number
CA2272556A1
CA2272556A1 CA002272556A CA2272556A CA2272556A1 CA 2272556 A1 CA2272556 A1 CA 2272556A1 CA 002272556 A CA002272556 A CA 002272556A CA 2272556 A CA2272556 A CA 2272556A CA 2272556 A1 CA2272556 A1 CA 2272556A1
Authority
CA
Canada
Prior art keywords
guard bands
reduce
sense electrodes
tuning fork
extended
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002272556A
Other languages
French (fr)
Other versions
CA2272556C (en
Inventor
Marc S. Weinberg
John C. Pinson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Charles Stark Draper Laboratory Inc
Boeing North American Inc
Original Assignee
The Charles Stark Draper Laboratory, Inc.
Marc S. Weinberg
John C. Pinson
Rockwell International Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by The Charles Stark Draper Laboratory, Inc., Marc S. Weinberg, John C. Pinson, Rockwell International Corporation filed Critical The Charles Stark Draper Laboratory, Inc.
Publication of CA2272556A1 publication Critical patent/CA2272556A1/en
Application granted granted Critical
Publication of CA2272556C publication Critical patent/CA2272556C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
    • G01C19/56—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces
    • G01C19/5719—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces using planar vibrating masses driven in a translation vibration along an axis

Abstract

Guard bands (20a, 20b, 20c, 20d) in a tuning fork gyroscope reduce or eliminate force and sensitivity associated with proof mass (13) motion normal to the substrate (22) as a result of voltage transients. The guard bands reduce the undesired effects of transient voltages on electrostatic coupling of interleaved comb electrodes (12a, 18a; 14a, 18b; 14b, 18c; 12d, 18d). The guard bands are biased to reduce the coupling ratio to zero and thereby enable starting and improved performance. Various configurations of guard bands may be employed including distinct inner (20b, 20c) and outer (20a, 20d) guard bands, distinct inner guard bands only, extended sense electrodes below inner sensing combs with no outer guards, distinct outer guard bands with extended sense electrodes, and sense electrodes extended beneath both drive and sensing combs.
CA002272556A 1996-11-21 1997-11-18 Guard bands for tuning fork gyroscopes Expired - Lifetime CA2272556C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/752,570 US5892153A (en) 1996-11-21 1996-11-21 Guard bands which control out-of-plane sensitivities in tuning fork gyroscopes and other sensors
US08/752,570 1996-11-21
PCT/US1997/021000 WO1998022827A1 (en) 1996-11-21 1997-11-18 Guard bands for tuning fork gyroscopes

Publications (2)

Publication Number Publication Date
CA2272556A1 true CA2272556A1 (en) 1998-05-28
CA2272556C CA2272556C (en) 2003-10-14

Family

ID=25026850

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002272556A Expired - Lifetime CA2272556C (en) 1996-11-21 1997-11-18 Guard bands for tuning fork gyroscopes

Country Status (6)

Country Link
US (1) US5892153A (en)
EP (1) EP1007977B1 (en)
JP (1) JP3474582B2 (en)
CA (1) CA2272556C (en)
DE (1) DE69735726T2 (en)
WO (1) WO1998022827A1 (en)

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Also Published As

Publication number Publication date
JP3474582B2 (en) 2003-12-08
US5892153A (en) 1999-04-06
DE69735726T2 (en) 2006-08-31
EP1007977B1 (en) 2006-04-19
DE69735726D1 (en) 2006-05-24
JP2001504585A (en) 2001-04-03
CA2272556C (en) 2003-10-14
EP1007977A1 (en) 2000-06-14
EP1007977A4 (en) 2000-07-26
WO1998022827A1 (en) 1998-05-28

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