US5226321A
Expired / Lapsed
US
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Vibrating planar gyro
Assignee: Atlantic Inertial Systems Ltd
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Filing: 1991-05-17
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Granted: 1993-07-13
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Expires: 2011-05-17
Abstract
Abstract A vibrating planar ring or hoop-like structure is disclosed. The structure is suspended in space by a suitable support mount for detecting turning rate, linear acceleration and angular acceleration. Turning rate is sensed by detecting vibrations coupled by Coriolis forces, whereas linear acceleration and angular acceleration are sensed by lateral, vertical and rocking movement of the entire ring or hoop-like structure within its mount.
Inventors
- 👤 Malcolm P. Varnham
- 👤 Diana Hodgins
- 👤 Timothy S. Norris
- 👤 Huw D. Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:40
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/56; G01C19/567; G01C19/5677; G01C19/5684; G01P; G01P15/00; G01P15/14; H; H03; H03H; H03H9/00; H03H9/02; H03H9/02244; H03H9/02338; H03H2009/02346; H03H2009/02354
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
85 words
An inertial sensor comprising: a vibratory resonator having inner and outer peripheral portions extending around a common axis, excitation means for causing the resonator to vibrate, support means for supporting the resonator and for allowing the resonator to vibrate in response to said excitation means and for allowing the resonator to move relative to the support means in response to linear acceleration, angular acceleration and turning rate, said support means comprising a plurality of flexible beams; and transducer means for sensing movement of the resonator.
Claim 2
Dependent Claim
85 words
An inertial sensor comprising: a vibratory resonator having inner and outer peripheral portions extending around a common axis, excitation means for causing the resonator to vibrate, support means for supporting the resonator and for allowing the resonator to vibrate in response to said excitation means and for allowing the resonator to move relative to the support means in response to linear acceleration, angular acceleration and turning rate, said support means comprising a plurality of flexible beams; and transducer means for sensing movement of the resonator.
Claim 3
Dependent Claim
22 words
A sensor according to claim 1, wherein said flexible beams have a longitudinal stiffness less than a transverse stiffness of said resonator.
Claim 4
Dependent Claim
102 words
An inertial sensor comprising: a vibratory resonator having inner and outer peripheral portions extending around a common axis, excitation means for causing the resonator to vibrate, support means for supporting the resonator and for allowing the resonator to vibrate in response to said excitation means and for allowing the resonator to move relative to the support means in response to linear acceleration, angular acceleration and turning rate, and transducer means for sensing movement of the resonator, wherein said excitation means comprises a plurality of pairs of electrodes positioned around said resonator, each of said electrodes comprising a series of concentric electrode strips.
Claim 5
Dependent Claim
102 words
An inertial sensor comprising: a vibratory resonator having inner and outer peripheral portions extending around a common axis, excitation means for causing the resonator to vibrate, support means for supporting the resonator and for allowing the resonator to vibrate in response to said excitation means and for allowing the resonator to move relative to the support means in response to linear acceleration, angular acceleration and turning rate, and transducer means for sensing movement of the resonator, wherein said excitation means comprises a plurality of pairs of electrodes positioned around said resonator, each of said electrodes comprising a series of concentric electrode strips.
Claim 6
Dependent Claim
25 words
A sensor according to claim 3, wherein the strips of the respective series of concentric electrode strips of each pair of electrodes are radially offset.
Claim 7
Dependent Claim
101 words
An inertial sensor comprising: a vibratory resonator having inner and outer peripheral portions extending around a common axis, excitation means for causing the resonator to vibrate, support means for supporting the resonator and for allowing the resonator to vibrate in response to said excitation means and for allowing the resonator to move relative to the support means in response to linear acceleration, angular acceleration and turning rate, and transducer means for sensing movement of the resonator, wherein said excitation means is periodically inoperative and signals from said transducer means representative of movement of said resonator are monitored during the inoperative periods.
Claim 8
Dependent Claim
101 words
An inertial sensor comprising: a vibratory resonator having inner and outer peripheral portions extending around a common axis, excitation means for causing the resonator to vibrate, support means for supporting the resonator and for allowing the resonator to vibrate in response to said excitation means and for allowing the resonator to move relative to the support means in response to linear acceleration, angular acceleration and turning rate, and transducer means for sensing movement of the resonator, wherein said excitation means is periodically inoperative and signals from said transducer means representative of movement of said resonator are monitored during the inoperative periods.
Claim 9
Dependent Claim
135 words
An inertial sensor comprising: a vibratory resonator having inner and outer peripheral portions extending around a common axis, excitation means for causing the resonator to vibrate, support means for supporting the resonator and for allowing the resonator to vibrate in response to said excitation means and for allowing the resonator to move relative to the support means in response to linear acceleration, angular acceleration and turning rate, and transducer means for sensing movement of the resonator, wherein signals from said transducer means representative of movement of said resonator are processed to produce a first signal representative of linear acceleration of said sensor and a second signal representative of turning rate of said sensor, said second signal being modified by said first signal in order to compensate of any linear acceleration component in said second signal.
Claim 10
Dependent Claim
135 words
An inertial sensor comprising: a vibratory resonator having inner and outer peripheral portions extending around a common axis, excitation means for causing the resonator to vibrate, support means for supporting the resonator and for allowing the resonator to vibrate in response to said excitation means and for allowing the resonator to move relative to the support means in response to linear acceleration, angular acceleration and turning rate, and transducer means for sensing movement of the resonator, wherein signals from said transducer means representative of movement of said resonator are processed to produce a first signal representative of linear acceleration of said sensor and a second signal representative of turning rate of said sensor, said second signal being modified by said first signal in order to compensate of any linear acceleration component in said second signal.
Claim 11
Dependent Claim
135 words
An inertial sensor comprising: a vibratory resonator having inner and outer peripheral portions extending around a common axis, excitation means for causing the resonator to vibrate, support means for supporting the resonator and for allowing the resonator to vibrate in response to said excitation means and for allowing the resonator to move relative to the support means in response to linear acceleration, angular acceleration and turning rate, and transducer means for sensing movement of the resonator, wherein signals from said transducer means representative of movement of said resonator are processed to produce a first signal representative of angular acceleration of said sensor and a second signal representative of turning rate of said sensor, said second signal being modified by said first signal in order to compensate of any angular acceleration component in said second signal.
Claim 12
Dependent Claim
135 words
An inertial sensor comprising: a vibratory resonator having inner and outer peripheral portions extending around a common axis, excitation means for causing the resonator to vibrate, support means for supporting the resonator and for allowing the resonator to vibrate in response to said excitation means and for allowing the resonator to move relative to the support means in response to linear acceleration, angular acceleration and turning rate, and transducer means for sensing movement of the resonator, wherein signals from said transducer means representative of movement of said resonator are processed to produce a first signal representative of angular acceleration of said sensor and a second signal representative of turning rate of said sensor, said second signal being modified by said first signal in order to compensate of any angular acceleration component in said second signal.
Claim 13
Dependent Claim
90 words
An inertial sensor comprising: a vibratory resonator having inner and outer peripheral portions extending around a common axis, excitation means for causing the resonator to vibrate, support means for supporting the resonator and for allowing the resonator to vibrate in response to said excitation means and for allowing the resonator to move relative to the support means in response to linear acceleration, angular acceleration and turning rate, said support means comprising a plurality of flexible beams, and transducer means for sensing movement of the resonator, wherein said resonator is planar.
Claim 14
Dependent Claim
90 words
An inertial sensor comprising: a vibratory resonator having inner and outer peripheral portions extending around a common axis, excitation means for causing the resonator to vibrate, support means for supporting the resonator and for allowing the resonator to vibrate in response to said excitation means and for allowing the resonator to move relative to the support means in response to linear acceleration, angular acceleration and turning rate, said support means comprising a plurality of flexible beams, and transducer means for sensing movement of the resonator, wherein said resonator is planar.
References Cited (Backward Citations)
GB1288118A
Cited
US3924475A
Cited
GB2021266A
Cited
US4281384A
Cited
US4654663A
Cited
US4578650A
Cited
GB2158579A
Cited
GB2156523A
Cited
GB2164749A
Cited
GB2186085A
Cited
EP0307321A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-12 | 1997-01-11 | 1997-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-12 | 2001-01-11 | 2001-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-12 | 2005-01-11 | 2005-07-13 | $7700.00 | Window Closed / Lapsed |