| 摘要 |
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 cosntheta 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, and<?in-line-formulae description="In-line Formulae" end="tail"?> where, when L is odd: <?in-line-formulae description="In-line Formulae" end="lead"?>L=N/K<?in-line-formulae description="In-line Formulae" end="tail"?> where K is an integer, L>2 and N is the carrier mode order. |
