Method and apparatus for electronic cancellation of...

Details Method and apparatus for electronic cancellation of... Method and apparatus for electronic cancellation of...

2007-11-06

2007-11-06

Kwok, Helen (Department: 2856)

Measuring and testing

Instrument proving or calibrating

Speed, velocity, or acceleration

C073S504120

Reexamination Certificate

active

11347978

ABSTRACT:
Methods and apparatus are provided for detecting a rate of rotation. In one implementation, the method includes vibrating a proof mass at a pre-determined frequency in a drive axis. In response to a rotation, sensing an amount of deflection of the proof mass in an axis orthogonal to the drive axis, in which the amount of deflection is sensed as a change in charge. The method further includes generating a quadrature error cancellation signal to substantially cancel quadrature error from the sensed change in charge.

REFERENCES:
patent: 4511848 (1985-04-01), Watson
patent: 5481914 (1996-01-01), Ward
patent: 5703292 (1997-12-01), Ward
patent: 6067858 (2000-05-01), Clark et al.
patent: 6230563 (2001-05-01), Clark et al.
patent: 6370937 (2002-04-01), Hsu
patent: 6445195 (2002-09-01), Ward
patent: 6571630 (2003-06-01), Weinberg et al.
patent: 6854315 (2005-02-01), Wyse
patent: 7051590 (2006-05-01), Lemkin et al.
Yazdi, Navid et al., “Micromachined Intertial Sensors,” Proceedings of the IEEE, vol. 86, No. 8, Aug. 1998, pp. 1640-1659.

Affiliated with

Also associated with

Rating

Method and apparatus for electronic cancellation of... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for electronic cancellation of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for electronic cancellation of... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3830834