SU1434254A1 - Device for measuring ship rolling and pitching - Google Patents

Abstract

The invention relates to a measurement technique, in particular, to means for measuring the rolling and pitching of a ship. The aim of the invention is to improve the measurement accuracy. The device comprises a gyrosphere 1 with a centering coil 21, the following sphere 2, a reservoir 4, a gimbal suspension with an outer 8 and an inner 6 ring, a deflection angle sensor of the outer ring 8 from the binnacle 10, a deflection angle sensor of the inner ring 6 from the outer 8, first 11 and the second 12 sensors mounted on the tank 4, and the processing unit. 1 hp f-ly, 3 ill.g

Description

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The invention relates to instrumentation engineering, in particular, to devices for measuring ship angles and pitching angles, and can be used both to indicate these angles and as a sensor in stabilization systems in the horizon plane of various instruments of equipment installed on the ship. hydroacoustic and radar stations, direction-finding repeaters, magnetometers, actinometers, etc.

The purpose of the invention is to improve measurement accuracy.

FIG. 1 schematically shows a device, a general view5 of FIG. 2 an electrical circuit for connecting inductive coils in an inductive sensor; in fig. 3 is a block diagram of the formation of mismatch signals proportional to the angle m of the onboard and pitching ship.

The gyrosphere 1 is inside the tracking sphere 2 and floats freely in the support fluid. The following sphere 2 is fixed in the table 3 and can rotate unrestricted relative to it. Table 3 closes the tank 4 installed by means of a support ring 5 and a shock-absorbing suspension (not shown) in the inner cardan ring 6 "Semi axes 7 are rigidly fixed to ring 6 and inserted into the support plates located on the outer cardan ring 8, semi-axes 9 of which are inserted into bearings installed in binnacle 10 ,. The binnacle is attached to the deck in such a way that the axis of rotation 9 of the outer gimbal ring 8 is parallel to the longitudinal axis of the vessel, i.e. nose lines - feed,

To measure the angle of rotation of the outer gimbal ring 8 relative to the binnacle 10, an angle sensor 11 is installed, the rotor of which is fixed to the ring 8, and a stator - on the binnacle 10. For measuring the angle of rotation of the inner gimbal ring 6 relative to the outer ring 8, an angle sensor 12 is installed, the rotor of which mounted on the cardan ring 6, and the stator on the cardan ring 8.

In the split ring 13, which is fastened to the tank 4 with the strings 14, two identical inductive sensors 15 and 16 are clamped. Inductive sensor 15 is designed to measure the angle

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rotation of tank 4 relative to the gyrosphere around the axis of rotation of the outer universal ring and has four inductive coils 17–20 with cores, which are located in a plane perpendicular to the plane of the internal universal ring 6 and passing through the semi-axis 7. Inductive sensor 16 is designed to measure the angle of rotation of the tank relative to the gyrosphere around the axis of rotation of the inner gimbal ring 6, and also has four inductive coils with cores which are in a plane perpendicular to the plane the morning cardan ring 6 and passing through the axles 9. All eight inductive coils at normal temperature of the supporting fluid are located symmetrically in height relative to the centering coil 21 inside the gyrosphere 1. The electrical connection of the four coils in each inductive sensor is the same (figure 2) Coils 17, 19 and 18, 20 are connected in pairs in series-according, and between them these pairs are connected in series-counter. Such a connection of inductive coils excludes the height of the movement of the gyrosphere 1 in height by the magnitude of the signal received from the inductive sensors.

The signals produced by the angle sensors 11 and 12 are algebraically summed with the signals produced by the inductive sensors 15 and 16, with the result that voltages proportional to the angles of the ship’s side and keel are obtained at the output of the summers. The signal from the angle sensor 11, proportional to the angle of rotation of the outer gimbal ring 8 relative to the binnacle 10, comes after amplifier 22 to one input of cy fmator 23. To the second input of this adder comes after amplifier 24, a signal from inductive sensor 15 proportional to the angle of rotation of the tank 4 relative to the nodrosphere 1. At the output of the adder 23, a signal is generated at any time that is proportional to the ship’s rolling angle, i.e. the slope of the binnacle relative to the equatorial plane of the gyrosphere. A signal proportional to the pitching angle is formed identically by

summing the signals from the angle sensor 12 and the inductive sensor 16.

The device operates as follows.

In the working state, the gyrocompass gyrosphere 1 occupies a stable position of dynamic equilibrium relative to the planes of the true meridian and the horizon. The current flowing in the centering coil 21 creates an electromagnetic field, which induces in the next sphere 2 eddy currents whose field, interacting with the electromagnet: M field of the centering coil, creates repulsive forces that center the gyrosphere 1 with respect to the next Sphere 2.

Since the reservoir has a positive satinality, with the static position of the vessel the cardan rings 6 kB are located in the plane of the true horizon. At the same time, the split ring 13 with inductive sensors 15 and 16 is located in the plane of the true horizon. Therefore, at the nominal temperature of the supporting fluid, the inductive coils of these sensors are located symmetrically relative to the center coil 21 and the same currents induced by the electromagnetic field of the center coil. Since the corresponding pairs of inductive coils are connected in series to each other, the output voltage of the inductive sensors 15 and 16 is zero. If the plane of the deck of the ship is horizontal, then the signals from the 11 l 12 angle sensors are also zero.

With a static slope of the deck relative to the horizon, signals are received from the sensors 11 and 12 of the angle, the voltage of which is proportional to the beats of the ship’s side and keel. With inductive sensors 15 and 16 signals. still equal to zero, since the mutual position of the reservoir 4 and gyro 1 has not changed.

During the ship’s motion, inertia forces arise which deflect the reservoir 4, and with it the cardan rings 6 and 8 from the plane of the true horizon. As a result, the angle sensors 11 and 12 change the angles

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The resolution depends on the type of vessel, the intensity of the wave, the location of the gyro relative to the center of gravity of the vessel and can be as high as 5th. To compensate for these errors, signals are used that are taken from inductive sensors 15 and 16. When the tank deviates relative to the gyrosphere, the position of the inductive coils relative to the centering coil changes, as a result of which a large current is induced in one pair of coils and a smaller one in the other. The magnitude of the differential current is proportional to the angle of deflection, and the sign to the direction. These signals, after amplification, arrive at the corresponding soulshots, where they algebraically sum up from the signal from the angle sensors 11 and 12. As a result, a signal is received from the accumulator outputs. j proportional to the angles of the ship’s side and pitching motion without errors due to the influence of inertia forces. When maneuvering the course, the Kli speed also gives rise to inertial forces and, deflecting the tank, leading to errors in measuring the angles of the ship’s side and keel, which are compensated in a similar way.

Due to the installation of a two-angle compass and two identical inductive sensors on a conventional two-gyro compass, it is possible to measure the angles of the ship’s pitching and pitching without using special gyroscopic or other vertical sensors, thereby expanding the functionality of the gyrocompass. The presence of such a device makes it possible to measure the static and dynamic angles of heel and trim of the vessel with great accuracy, which makes it possible to eliminate the use of cre - ation. gauges and trimometers used on ships for this purpose.

Claims (2)

1. A device for measuring the angles of the ship’s side and pitching angles containing a gyrosphere with a centering coil, a tracking sphere, a reservoir. side and pitching of a ship with a runner-55 outer and inner rings with cardanaries proportional to the angles of deflection of tank 4 relative to gyrosphere 1. The magnitude of these porous suspension attached to binnacle, characterized in that cnnfi-F4o of the sensor angle is external to the cardan ring from the nactus, the sensor of the angle of inclination of the internal cardan ring from the outer ring, and t a) -: the first and the second one are inductive; and .and.with users; fixed on the tank in vertical areas, passing the puck, respectively, through the axes of the enemy n inner outer outer rings, four amplifiers, first and second adders, while the outputs of the sensors of the angles of deviation of the outer outer ring from the naktouz and the inner universal ring, and from the external, respectively, through iinr. Bi-n: and amplifiers are connected :; - with lispsbibHi benefits of the first and second cyj-i iaTopa, in the mountains the inputs of which are c: tt: e C 1 through jiTopoft and fourth 6 5 These amplifiers are connected to the outputs of the first and second inductive sensors. 2. The device is n, 1, o tl and it is due to the fact that, in order to increase accuracy by reducing the influence of vertical displacements of the gyrosphere, each inductive sensor is made in the form of four inductive coils attached to the tank. two from opposite; The sides of the gyrosphere are symmetrically relative to the centering coil, with each two inductive coils on opposite sides below and in the center of the centering coil connected in pairs successively in concert, and these pairs are interconnected in series to each other. fae.2