Vibratory gyroscopic rate sensor

Details Vibratory gyroscopic rate sensor Vibratory gyroscopic rate sensor

2005-12-27

2005-12-27

Kwok, Helen (Department: 2856)

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

Reexamination Certificate

active

06978674

ABSTRACT:
A two axis gyroscope including a substantially planar vibratory resonator (5) having a substantially ring or hoop-like structure with inner and other peripheries extending around a common axis, carrier mode drive (22) for causing the resonator (5) to vibrate in a cosnθ vibration mode, carrier mode pick-off (23) for sensing movement of the resonator (5) in response to the carrier mode drive (22), X-axis response mode pick-off (25) for detecting movement of the resonator in response to rotation about the X-axis, X-axis response mode drive (24) for nulling said motion, y-axis response mode pick-off (27) for detecting movement of the resonator in response to rotation about the y-axis, y-axis response mode drive (26) for nulling said motion, and a support (9) for flexibly supporting the resonator (5) and for allowing the resonator to vibrate relative to the support (9) in response to the carrier mode drive (22) and to applied rotation, wherein the support (9) comprises only L legs, where, when L is even:in-line-formulae description="In-line Formulae" end="lead"?L=2N/K, andin-line-formulae description="In-line Formulae" end="tail"?where, when L is odd:in-line-formulae description="In-line Formulae" end="lead"?L=N/Kin-line-formulae description="In-line Formulae" end="tail"?where K is an integer, L>2 and N is the carrier mode order.

REFERENCES:
patent: 5226321 (1993-07-01), Varnham et al.
patent: 5817940 (1998-10-01), Kobayashi et al.
patent: 5915276 (1999-06-01), Fell
patent: 5932804 (1999-08-01), Hopkin et al.
patent: 6089090 (2000-07-01), Namerikawa et al.
patent: 6151964 (2000-11-01), Nakajima
patent: 6272925 (2001-08-01), Watson
patent: 6282958 (2001-09-01), Fell et al.
patent: 6343509 (2002-02-01), Fell et al.
patent: 6401534 (2002-06-01), Fell et al.
patent: 0 619 471 (1994-10-01), None
patent: 0 836 073 (1998-04-01), None
patent: 0 859 219 (1998-08-01), None
patent: 2 318 184 (1998-04-01), None
patent: 2 322 196 (1998-08-01), None
patent: 2 335 273 (1999-09-01), None
patent: 2 338 781 (1999-12-01), None
patent: 99/22203 (1999-05-01), None
patent: 99/47890 (1999-09-01), None
patent: 99/47891 (1999-09-01), None
patent: 00/09971 (2000-02-01), None
patent: 01/53776 (2001-07-01), None
patent: 01/55675 (2001-08-01), None

Affiliated with

Also associated with

Rating

Vibratory gyroscopic rate sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vibratory gyroscopic rate sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vibratory gyroscopic rate sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3509385