| 摘要 |
<p>Apparatus for measuring variation in scalefactor from a predetermined value for a vibrating structure gyroscope has a vibrating structure (R), fixed primary and fixed secondary drives ( 1, 13 ) for putting and maintaining the vibrating structure (R) in vibrating resonance, fixed primary and fixed secondary pick offs ( 2, 6 ) for detecting vibration of the vibrating structure (R), with the drives and pick offs ( 1, 13, 2, 6 ) being located radially around the vibrating structure (R), quadrature component and real component loop systems ( 7, 8 ), automatic gain control and phase locked loop systems ( 5, 22 ), a sin/cos pick off resolver ( 38 ) for receiving signals from the primary and secondary pick offs ( 2, 6 ) and for outputting signals to the quadrature component and real component loop systems ( 7, 8 ) and to the automatic gain control and phase locked loop systems ( 5, 22 ), a sin/cos drive resolver ( 37 ) for receiving output signals from the quadrature component and real component loop systems ( 7, 8 ) and from the automatic gain control and phase locked loop systems ( 5, 22 ) and for feeding control signals to the primary and secondary drives ( 1, 13 ), and an angular displacement control ( 40 ) for feeding angular displacement control signals to the sin/cos drive and pick off resolvers ( 38, 37 ) to control uniform displacement of the resolved carrier and response mode drives and pick offs axes angularly around the vibrating structure (R), with respect to a central axis of the vibrating structure, at a known rate.</p> |
