Measuring and testing – Speed – velocity – or acceleration – Angular rate using gyroscopic or coriolis effect
Reexamination Certificate
2005-08-16
2005-08-16
Williams, Hezron (Department: 2856)
Measuring and testing
Speed, velocity, or acceleration
Angular rate using gyroscopic or coriolis effect
C033S0010PT, C073S504140
Reexamination Certificate
active
06928874
ABSTRACT:
A micromachined angle measuring gyroscope using a dual mass architecture measures angular positions rather than angular rates. The invention decouples the effects of drive and sense through the use of a dual mass architecture, and is comprised of a single lumped drive mass, which is structurally coupled to a second lumped slave mass, where the drive mass is electrostatically driven at the first resonant frequency the system using parallel plate electrodes. The slave mass is driven to higher amplitudes than the drive mass. In the presence of rotation, the line of oscillation in both masses precesses, which is easily detectable in the slave mass due to the amplified motion, and is exactly equal to the angle of rotation. The two illustrated embodiments are z-axis realizations of this principle, where the first device uses an inner drive/outer sense architecture and the second uses an outer drive/inner sense architecture.
REFERENCES:
patent: 6293148 (2001-09-01), Wang et al.
patent: 6393913 (2002-05-01), Dyck et al.
patent: 6481285 (2002-11-01), Shkel et al.
Painter Christopher C.
Shkel Andrei M.
Dawes Daniel L.
Hanley John C
Myers Dawes Andras & Sherman
The Regents of the University of California
Williams Hezron
LandOfFree
Dynamically amplified micromachined vibratory angle... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dynamically amplified micromachined vibratory angle..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamically amplified micromachined vibratory angle... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3515741