| 摘要 |
1,183,898. Gyroscopic apparatus. SOC. D'APPLICATIONS GENERALES D'ELECTRICITE ET DE MECANIQUE S.A.G.E.M. Oct.24, 1968 [Oct.31, 1967], No.50509/68. Heading G1C. Apparatus for providing a line of sight L-L comprises a telescope 4 for receiving light passing along the line L-L after reflection in a mirror 2 pivotally mounted about an axis X-X in a gimbal 5 in turn mounted for rotation in a support 6 about an orthogonal axis Y-Y, the attitude of the mirror 2 being stabilized by a reference platform 7 itself stabilized by two gyroscopes 9, 11 and mounted for rotation in the gimbal 5 about an axis Z-Z parallel to the axis X-X and coupled to the mirror by means 8 providing a reduction of 0À5 between the pivotal movements of the platform 7 and mirror 2, the input axis E 1 of the gyroscope being parallel to the axis X-X movements about this axis being detected by an angle detector 14 controlling a torque motor 10 for the platform 7, and the gyroscope 11 being disposed with its input axis E 2 parallel to the axis Y-Y and similarly provided with an angle detector 16 coupled to a torque motor 12 so that the platform 7 controls the attitude of the mirror 2, a switch 18 additionally being coupled to provide an additional biasing torque from the motors 10, 12 when actuated. As an alternative to the switch 18 acting directly on the motors 10, 12, it may be coupled to actuate additional torque motors rotating the gyroscope rotors about the degree of freedom provided by their supporting gimbals, thus actuating the angle detectors 14, 16 and the torque motors 10, 12 indirectly. Also, the gyroscope 9 may be disposed with its spin axis S 1 parallel to the axis Y-Y to avoid coupling between the two gyroscopes. |
