CN108917791B

CN108917791B - Gyroscope torquer with self-detection function

Info

Publication number: CN108917791B
Application number: CN201810665591.2A
Authority: CN
Inventors: 王梦涵; 白永杰; 刘仁龙; 赵倩云; 刘金龙
Original assignee: 707th Research Institute of CSIC
Current assignee: 707th Research Institute of CSIC
Priority date: 2018-06-26
Filing date: 2018-06-26
Publication date: 2022-02-18
Anticipated expiration: 2038-06-26
Also published as: CN108917791A

Abstract

The invention relates to a gyroscope torquer with a self-detection function, which comprises an inner magnetic ring, a movable cup, stator magnetic poles and coils, wherein the inner magnetic ring is arranged on the inner side of the movable cup; the number of coils on the movable cup is the same as that of the magnetic poles of the stator, and the movable cup is divided into two parts, wherein one part is a torquer main coil, and the number of the torquer main coils is multiple; the other part is a torquer secondary coil, and the number of the torquer secondary coils is one or more. The gyroscope torquer with the self-detection function has reasonable design and scientific structure, achieves the purpose of self-detection by improving the structure and the number of the coil and the stator magnetic poles, solves the problem that an instrument cannot be detected systematically, and eliminates the hidden danger of equipment use.

Description

Gyroscope torquer with self-detection function

Technical Field

The invention relates to the technical field of torquers for single-degree-of-freedom liquid-floated gyroscopes, in particular to a gyroscope torquer with a self-detection function.

Background

In a gyroscope, the torquer is a feedback actuator in the instrument servo loop. The torquer converts the input current into the precession torque required by the gyroscope, and the rotation angular rate of the carrier can be measured by measuring the input current of the torquer.

When a gyroscope is installed on a system platform as an angular velocity measuring device, the performance of the instrument cannot be detected without starting the equipment. At this time, the gyroscope needs to be detached and placed on a special test turntable, the turntable is rotated, angular velocity input is generated, and the test is carried out, so that the process is complicated. Meanwhile, the performance of the equipment cannot be further confirmed after the equipment is installed and before the equipment is used, so that hidden danger is brought to the use of the equipment.

Disclosure of Invention

The invention aims to make up for the defects of the prior art and provides a gyroscope torquer with a self-detection function, which can realize the function of measuring the angular speed of an instrument. The invention realizes the self-detection of the angular velocity sensitivity of the inertial instrument under the condition of no angular velocity input.

The purpose of the invention is realized by the following technical means:

the utility model provides a gyroscope torquer with self test function, includes interior magnetic ring, moves cup, stator magnetic pole and coil, and interior magnetic ring sets up in the inboard that moves the cup, moves and sets up coil, its characterized in that on the cup: a plurality of stator magnetic poles are uniformly arranged on the outer side wall of the inner magnetic conduction ring along the circumferential direction, and a gyroscope outer shell is arranged on the outer side of the movable cup; the number of coils on the movable cup is the same as that of the stator magnetic poles, the movable cup is divided into two parts, one part is a torquer main coil, and the number of the torquer main coils is multiple and is led out in series to generate feedback torque in a loop; the other part is a torquer secondary coil, one or more torquer secondary coils are separately led out or led out in series, and the self-detection function of measuring the angular speed of the instrument can be realized after the torquer secondary coils are electrified.

Moreover, the number of the stator magnetic poles is at least six.

And the gyroscope outer shell is made of soft magnetic materials.

Moreover, the inner magnetic conduction ring, the movable cup and the gyroscope outer shell are coaxially arranged.

The invention has the advantages and positive effects that:

1. the invention improves the torquer for the single-degree-of-freedom liquid-floated gyroscope, realizes the self-detection function of the performance of the instrument by changing the structures of the coil and the stator magnetic pole on the movable cup of the torquer, and solves the problem that the instrument cannot be detected on a system.

2. The invention has scientific design, reasonable improvement and easy realization, only needs to improve the structure of the torquer without adding other new structures, and realizes the required functions on the basis of the original structure.

3. The invention fixes the stator magnetic pole on the inner magnetic conductive ring, uses soft magnetic material as the gyroscope outer shell to replace the outer magnetic conductive ring. After the outer magnetic conduction ring is removed, the volume of the torquer can be reduced, and support is provided for the miniaturization of the instrument.

4. The gyroscope torquer with the self-detection function has reasonable design and scientific structure, achieves the purpose of self-detection by improving the structure and the number of the coil and the stator magnetic poles, solves the problem that an instrument cannot be detected systematically, and eliminates the hidden danger of equipment use.

Drawings

FIG. 1 is a schematic structural diagram of a prior art liquid-floating inertial instrument torquer;

FIG. 2 is a diagram of a prior art torquer moving cup coil winding;

fig. 3 is a schematic structural diagram of a self-detecting moment machine according to the present invention;

fig. 4 is a winding diagram of a moving cup coil of the self-detecting moment machine according to the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings, which are intended to be illustrative, not limiting, and not limiting.

To facilitate understanding of the improvements of the present invention, a brief description of the existing torquer structure is first provided:

fig. 1 shows a moving-coil torquer structure of a conventional liquid-floating inertial instrument, which includes stator magnetic poles 2 (four), a moving cup 4, an inner magnetic ring 3 and an outer magnetic ring 1. Fig. 2 is a diagram of a conventional torquer moving cup coil winding, from which it can be seen that the conventional torquer winding connects four coils 5 in series. The structure has the problem that when the gyroscope is installed on a system platform as an angular velocity measuring device, the performance of the instrument cannot be detected under the condition that the equipment is not started.

The utility model provides a gyroscope torquer with self test function, includes interior magnetic ring 3, moves cup 4, stator magnetic pole 2 and coil 5, and interior magnetic ring sets up and is moving the inboard of cup, moves and sets up the coil on the cup, and a plurality of stator magnetic poles are installed along the circumferencial direction equipartition to the lateral wall of interior magnetic ring, and the stator magnetic pole is six at least. By increasing the number of torquer stator poles, the loss of torquer scaling due to the assignment to the secondary winding is reduced.

The number of coils on the movable cup is the same as that of the stator magnetic poles, the movable cup is divided into two parts, one part is a torquer main coil, and the number of the torquer main coils is multiple and is led out in series to generate feedback torque in a loop; the other part is a torquer secondary coil, one or more torquer secondary coils are separately led out or led out in series, and the self-detection function of measuring the angular speed of the instrument can be realized after the torquer secondary coils are electrified.

As shown in fig. 3 and 4, in the present embodiment, the number of the stator poles of the torquer is changed to six, and the torquer is mounted on the inner magnetic conductive ring. Because a group of coils are separated for detecting the performance of the instrument, in order to not influence the calibration of the torquer, the total number of the coils is increased from the original four to six, five of the coils are led out in series to be used as main coils of the torquer, and the other coil is led out separately to be used as an auxiliary coil of the torquer. If there are other requirements for the current magnitude and detection range of the torquer in the calibration or self-detection, the total number of the coils and the proportion of the main and auxiliary coils can be further adjusted.

And a gyroscope outer shell 6 is arranged on the outer side of the movable cup and is made of soft magnetic materials. The inner magnetic conduction ring, the movable cup and the gyroscope outer shell are coaxially arranged.

The invention divides the coils on the moving cup into two groups, namely the coils are used for generating feedback torque in a loop and are called as main coils; the other group is called the secondary coil. The current is applied to the secondary coil to generate torque, the floater is pulled to deflect, so that the state of the instrument when angular speed is input is simulated, the current in the primary coil of the torque device is detected, and the performance of the instrument is judged.

Claims

1. The utility model provides a gyroscope torquer with self test function, includes interior magnetic ring, moves cup, stator magnetic pole and coil, and interior magnetic ring sets up in the inboard that moves the cup, moves and sets up coil, its characterized in that on the cup: a plurality of stator magnetic poles are uniformly arranged on the outer side wall of the inner magnetic conduction ring along the circumferential direction, and a gyroscope outer shell is arranged on the outer side of the movable cup; the number of coils on the movable cup is the same as that of the stator magnetic poles, the movable cup is divided into two parts, one part is a torquer main coil, and the number of the torquer main coils is multiple and is led out in series to generate feedback torque in a loop; the other part is a torquer secondary coil, one or more torquer secondary coils are separately led out or led out in series, and the self-detection function of measuring the angular speed of the instrument can be realized after the torquer secondary coils are electrified;

the number of the stator magnetic poles is at least six;

the gyroscope outer shell is made of soft magnetic materials.

2. The gyroscope with self-test function according to claim 1, wherein: the inner magnetic conduction ring, the movable cup and the gyroscope outer shell are coaxially arranged.