RU1809306C - Three-dimensional pendulous gyrocompass - Google Patents

Abstract

The invention relates to instrumentation and can be used in the development and creation of three-stage rocket gyrocompasses with a torsion suspension of the sensing element. The purpose of the invention is to increase the accuracy and speed of the gyrocompass. The gyrocompass contains a gauge of the angular position of the sensing element 1, the tracking housing 4 with the engine of the following housing 3. time interval generator 8. tlr.oK for entering the gyrocompass parameters 9, the torsion angle determination unit 7, the switch 10, the information display unit 11, the device working out the torsion angle of torsion by 6 with the attachment point of the upper point of the torus 5 and control unit 2. According to the information of the angular position gauge IE 1, the time interval shaper 8 and the gyrocompass parameter input unit 9, the determination unit and the angle of twist of the torsion form a correction for the zero point, which is automatically compensated mining device the angle of twist of the torsion. 1 ill. with

Description

The invention relates to the field of instrumentation and can be used in the development and creation of three-stage rocket gyrocompasses with a torsion suspension of a sensing element (SE).

The present invention aims to automatically compensate for the null point of the gyrocompass with a torsion suspension of the SE, which improves the accuracy and speed of determining the plane of the meridian.

The essence of the invention is as follows.

The free movement of the SE is monitored in the mode with the tracking system turned on. Then, if the offset of the zero point is A () m, then on the SE of the party

its suspension will act torsional moment equal to

Ts cr k Anp, where k ()

Then p where t / C is the angular acceleration of the SE, and I is the moment of inertia around the vertical axis.

Then,

00

about y

Cj

oh oh

# d

. Dg / V dg -5-,

(2)

(3)

where the increment of the angular velocity of the SE during the time At.

The average values of the angular velocity of the SEs at the time intervals A ti and A ta can be determined from the expressions

; Ani

AN2, m (4)

where A NI and A Na are the difference of the readings taken from the angle measuring device of the gyrocompass at known fixed time points (see Fig. 1).

Then it follows from formulas (2) - (4) that

Ј

A N2 At2 (Ati + At2)

ANr Ati (A: ti + At2)

Thus, using the angle measuring device, taking readings characterizing the position of the FE at fixed times can, for known gyrocompass parameters, quickly determine the null point value and compensate for it.

The composition and communication of the gyrocompass are shown in figure 2, where are indicated:

1 - meter angular position

2 is a gyrocompass control unit.

3 - engine of the next housing,

4-nd case,

5 - attachment point of the upper torsion point, 6 - twist angle testing device,

7 - torsion angle detection unit;

8 - shaper time intervals,

9 - input unit gyrocompass parameters,

10 - switch

11 is an information display unit.

The operation of the device and its individual blocks is as follows.

At the command of the control unit 2, the following system is turned on, the interval generator 8 sets

sequential reference time intervals A ti, A t2. Information about the angular position of the SE from the angular position meter 1 enters the torsion angle determination unit 7, where the change in the angular position of the AN AN, A N2 and the value of the zero point Anp are determined.

10

fifteen

twenty

"R .

35

40

45

fifty

Claims (2)

Information about the value of Anp is supplied either to the device for working out the twist angle 6, or to the information display unit 11, or to both blocks. These modes are set by the switch 10 by commands from the control unit 2. The device for working out the twist angle 6 rotates the attachment point of the upper point of the torsion bar 5 and thereby compensates for Anp. A device for testing the twist angle b can be performed on the basis of a stepper motor and comprise a circuit for converting the value of Anp into a pulse train. At the parameter input unit of the gyrocompass 9, a set of values of the quantities I, k are determined, determined in advance by known methods. Thus, the present invention will improve the accuracy of the determination of the meridian, since the compensation of the zero-point occurs at the same relative position of the SE and the tracking body as with the precession oscillations. In addition, the time for determining the meridian is reduced, since in existing gyrocompasses it takes about 15 minutes to compensate for the zero point, and in the proposed one it takes several seconds. SUMMARY OF THE INVENTION A three-stage gyrocompass containing a sensing element on a torsion suspension, measuring the angular position of the sensing element, a servo housing with a tracking system, a torsion angle working device and a control unit, characterized in that, in order to increase accuracy and speed, the action of the gyrocompass, it additionally includes a block for determining the torsion angle of rotation, a shaper of time intervals, a block for entering the parameters of the gyrocompass, a switch and a display unit and, while the output of the sensor of the angular position of the sensor is connected to the first input of the torsion bar angle detection unit, the second input of which is connected to the output of the time interval former, the third input is connected to the first output of the gyrocompass parameter input unit, the fourth input is connected to the second; the output of the gyrocompass parameter input unit, the torsion angle detection unit of the torsion bar is connected through the switch to the input of the angle processing device. The torsion bar is connected through the switch to the input of the information display unit, the first output of the control unit is connected to the input of the time interval shaper, and the second output of the block control is connected to the control input of the switch.