| 摘要 |
A gyroscope for sensing rate on at least two axes includes a substantially planar vibratory resonator (2) having a ring or hoop like shape, carrier mode drive means (4) for causing the resonator (2) to vitrate in a Cosn1.theta. inplane carrier mode where n1 has an integer value of 2 or more. The gyroscope also includes support means (3) for flexibly supporting the resonator (2), carrier mode pick off means (5) for sensing in-plane movement of the resonator, X axis response mode pick off means (8) for sensing out-of-plane Cosn.theta. response mode movement of the resonator in response to rotation of the gyroscope around the X axis, where n has a value of n1+1 or n1-1, and Y axis response mode pick off means (10) for sensing out-of-plane Sinn.theta. response mode movement of the resonator (2) in response to rotation of the gyroscope about the Y axis where n has a value n1+1 or n1-1, identical to that for the X axis response mode.
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