| 摘要 |
In a gyro arranged to be mounted in a vehicle and operable selectively as a directional gyro or as a gyro compass, which gyro includes a gyro rotor rotatable about a horizontal spin axis, an inner gimbal supporting the gyro rotor via its spin axis and pivotal about an axis which is maintained vertical when the gyro is operating as a gyro compass, a second gimbal supporting the inner gimbal via its axis and pivotal about an axis normally parallel to the rotor spin axis, an outer gimbal supporting the second gimbal and pivotal about an axis oriented approximately parallel to the vertical axis of the vehicle when the vehicle is upright, and control units for maintaining the desired orientations between the various axes, there is provided an intermediate gimbal disposed between the second gimbal and the outer gimbal, supporting the second gimbal via its axis, and having a pivot axis which is supported by the outer gimbal and which extends orthogonally to the axes of the second and outer gimbals, the second and intermediate gimbals being so arranged that the axis of the inner gimbal is vertical when the gyro is operating as a gyro compass, and the control units include a vertically sensor associated with the intermediate gimbal and are arranged for maintaining the axis of the second gimbal horizontal and the axis of the inner gimbal parallel to the axis of the intermediate gimbal when the gyro is operating as a directional gyro. |
