Angular speed sensor

Details Angular speed sensor Angular speed sensor

2011-08-02

2011-08-02

Chapman, Jr., John (Department: 2856)

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

Reexamination Certificate

active

07987715

ABSTRACT:
An angular velocity sensor includes a vibrator vibrating, first and second differential circuits for outputting first and second difference signals, respectively, and a synchronous detector circuit for synchronously detecting the first and second difference signals. First and second sensors outputs first and second detection signals in response to a distortion produced due to an inertial force. The second detection signal has a phase reverse to a phase of the first detection signal. The first difference signal corresponds to a difference provided by subtracting the first detection signal from the second detection signal. The second difference signal corresponds to a difference provided by subtracting the second detection signal from the first detection signal. This angular velocity sensor detects an angular velocity of the vibrator accurately.

REFERENCES:
patent: 7673529 (2010-03-01), Uemura
patent: 1 367 367 (2003-12-01), None
patent: 03-172712 (1991-07-01), None
patent: 2002-243451 (2002-08-01), None
patent: 2002-267448 (2002-09-01), None
patent: 2003-087057 (2003-03-01), None
International Search Report Dated Feb. 6, 2007.
Machine Translation of JP 2003-087057, submitted in Information Disclosure Statement dated Jun. 18, 2008.

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