SU160427A1 - - Google Patents

Description

In the known gyrostabilizing installations, made in the form of a four-gyro power frame with paired gyroscopes along each axis of stabilization, placed in a Cadap suspension, the axes of which are combined with the axes of stabilization of the power frame and through reduction gears are connected to stabilization motors, it is necessary to eliminate the current imbalance, which is necessary stabilization of the position of the camera, for example, when changing the cassettes of the camera, when changing conditions and direction of flight, etc. In addition, in the known gyrostability In the simulative settings, the switching speeds of the correction from large to small and back are carried out manually.

In the described gyrostabilizing installation, designed primarily for aerial cameras, the effect of the current imbalance is eliminated, for which a two-cargo compensator is connected to the stabilization motors with an electric motor that constantly rotates the gearbox, transmitting (when receiving error signals) movement to the loads moving parallel to the corresponding stabilization axis until imbalance. To automatically switch the correction speeds, load resistances are sequentially introduced into the excitation windings of the correction motors: :: activated by multi-stage relay contacts according to the signals of the correction sensors.

FIG. 1 shows a diagram of a four-gyro stabilizing installation; FIG. 2 shows an embodiment of the current unbalance compensator; FIG. 3 - electrical switching circuit of the installation correction speeds.

The aerial camera / is rigidly fixed on the inner ring 2 of the gimbal, the outer ring 3 of which carries the axles 4 and 5 of the inner ring 2. The latter can rotate around the semi-axes (around the axes xx and yy) at the corners, respectively. The gyroscope assembly 6 is also strengthened on the inner ring. Gyroscopes 6 with intrinsic moments I, Yad-, Well, Well are connected in pairs by a gear train 7. The axes of the gyroscope's own rotation are parallel to the plane of the inner ring 2, and the precession axes are perpendicular to it. On the axes of the gyroscopes precession, induction sensors 8 are located, connected through amplifiers 9 to stabilization motors 10. The latter, through gearboxes / 7, create compensating moments proportional to the angles of precession of the gyroscopes 6.

The installation (the axis of the aerial camera /) is brought to the true vertical by means of a sensitive element — a liquid electrolytic sensor 12 (shown outside the aerial camera /). The signal from this sensor passes through the amplifier 13 and creates guiding forces in the correction motors 14, the rotors of which are fixed on the axes of the gyroscopes 6. The correction motor 14 causes the precession.

gyroscopes 6 in the direction opposite to the deviation of the installation from the vertical. The compensator 15 of the current imbalance is connected to the stabilization motors 10. The compensator 15 consists of an electric motor 16 constantly rotating the gearbox 17, loads 18 and 19 moving along screws 20 and 21 parallel to axes 4 and 5.

Intermittent reversible rotation of the screws 20 and 21 is carried out using two-way electrofusion cables 22 and 23, the windings of which are connected through the amplifier 13 to the stabilization system.

When an imbalance occurs along the longitudinal or transverse axis of the installation, the corresponding stabilization motor 10 supplies power to one of the windings of the coupling 22 or 23, corresponding to the given axis and the direction of deviation of the system. The electrocoupler, including screw 20 or 21, transmits the movement of the electric motor 16 of the compensator to the corresponding load 18 or 19, displacing it relative to the center of gravity of the system in the corresponding direction before eliminating the imbalance in the system | Ki. At the moment of accurate balancing, the power supply of the clutch from the stabilization motor 10 is stopped and the load is stopped.

Switching of correction speeds from large to small occurs after setting to the vertical. The impulse supplied from the electrolytic sensor through the correction system is fed to the first stage of the relay 24, which includes resistance 25 in the excitation winding circuit of the correction motor 14. As a result, the speed is reduced in steps. In the reverse transition of the vertical from the correction signal, a cascade of the second relay 26 is triggered, a second resistance 27 is additionally connected in series with the first, the current in the excitation winding of the correction motor decreases again, and the stabilization rate decreases stepwise again.

Upon further transition of the unit through the vertical, like the first two, the cascades of the third and fourth relays 28, 29 are triggered and the resistances 30, 31 turn on, bringing the stabilization rate to a minimum.

Subject invention

Claims (2)

1. A gyrostabilizing installation, mainly for aerial cameras, made in the form of a four-gyro power frame with paired gyroscopes along each axis of stabilization placed in a gimbal suspension, the axes of which are combined with the axes of stabilization and connected to the gearboxes of stabilization motors, different from that with elimination of the influence of the current imbalance, for example when changing tapes in flight, when conditions and direction of flight change, etc., a two-load compensator is connected to the stabilization motors, containing an motor that constantly rotates the gearbox, reversively transmitting movement to the loads moving parallel to the corresponding stabilization axis until the imbalance is resolved. 2. A gyro-stabilizing plant according to claim 1, characterized in that, in order to automatically switch the correction speeds, load resistances are activated in series in the excitation windings of the correction motors, activated by the contact relay based on signals from the correction sensors. No. 160427