CN108054512B - High-torque anti-interference antenna pointing mechanism for deep space exploration - Google Patents
High-torque anti-interference antenna pointing mechanism for deep space exploration Download PDFInfo
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- CN108054512B CN108054512B CN201711290551.6A CN201711290551A CN108054512B CN 108054512 B CN108054512 B CN 108054512B CN 201711290551 A CN201711290551 A CN 201711290551A CN 108054512 B CN108054512 B CN 108054512B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
- H01Q3/08—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/1235—Collapsible supports; Means for erecting a rigid antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/288—Satellite antennas
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention provides a large-torque anti-interference antenna pointing mechanism for deep space exploration, which comprises: a servo mechanism; a locking unit for fixing the servo mechanism and supporting the antenna at a fixed position; the two-dimensional rotating unit is fixedly connected with the antenna through a flange; one end of the extending rod is connected with the lifting unit, and the other end of the extending rod is connected with the two-dimensional rotating unit; the compressing and releasing mechanisms are symmetrically distributed around the antenna by taking the antenna as a center; the first limiting mechanism and the second limiting mechanism; and the brake is arranged on the rotating shaft of the two-dimensional rotating unit, the stator of the brake is fixed on the end surface of the bearing hole of the two-dimensional rotating unit, and the rotor of the brake is fixed in the driven shaft. According to the high-torque anti-interference antenna pointing mechanism for deep space detection, the brake is mounted on the rotating shaft of the two-dimensional rotating mechanism, the rotating shaft holding torque is increased after the brake is powered on, and the anti-interference performance of the servo mechanism in a stop and hold mode is improved.
Description
Technical Field
The invention relates to the technical field of aerospace electromechanics, in particular to a large-torque anti-interference antenna pointing mechanism for deep space exploration.
Background
The antenna pointing mechanism is a core component of the satellite-borne measurement and control data transmission system and is an execution mechanism for tracking and positioning a ground receiving station by a data transmission antenna.
The aperture of a common satellite-borne data transmission antenna is generally about 0.5 meter, and the interference moment received during on-track flight is only tens of milli-newton meters. With the development of deep space exploration activities represented by lunar logging plans and fire exploration projects, the distance from the detector to the earth is far greater than that of an earth orbit satellite, the signal attenuation degree in the data transmission process is greatly increased, and a high-gain antenna is required to complete data transmission between the deep space detector and the earth. The caliber of the high-gain antenna is usually more than 2 meters, and the high-gain antenna needs to bear interference torque of tens of meters or even hundreds of meters in the track changing process of the deep space probe. The stopping holding moment of the current servo mechanism is slightly larger than the driving moment, generally about ten newton meters, and the requirement of resisting interference in the track changing process of the deep space probe cannot be met.
In the transmitting stage of the deep space probe, the high-gain antenna and the servo mechanism are required to be tightly pressed on the side surface of the probe to bear the vibration load of the transmitting section. The aperture of the high-gain antenna is large, and the pressing point of the servo mechanism is covered on the back of the antenna, so that the pressing point cannot be installed and fixed.
The design of a large-torque anti-interference antenna pointing mechanism for deep space exploration is urgently needed, and the requirements of deep space exploration are met.
Disclosure of Invention
The invention aims to provide a large-torque anti-interference antenna pointing mechanism for deep space exploration, and aims to solve the problem that a pressing point of a servo mechanism cannot be installed.
In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a big moment anti-interference antenna pointing mechanism for deep space exploration which includes: the servo mechanism comprises a lifting unit, the mounting bottom surface of the lifting unit is fixedly connected with the mounting surface of the detector and is positioned through a pin; the locking unit is arranged on the lifting unit, and after the servo mechanism lifts the antenna in place, the locking unit fixes the servo mechanism and supports the antenna at a fixed position; the two-dimensional rotating unit is fixedly connected with the antenna through a flange; one end of the extending rod is connected with the lifting unit, and the other end of the extending rod is connected with the two-dimensional rotating unit;
the compressing and releasing mechanisms are symmetrically distributed around the antenna by taking the antenna as a center;
a limiting groove of the first limiting mechanism penetrates through a mounting hole at one end of the extending rod, which is close to the two-dimensional rotating unit, the upper end of the first limiting mechanism is fixed on the extending rod, the lower end of the first limiting mechanism is attached and pressed with the spherical surface of a hemispherical limiting screw, a limiting base is fixed on a detector mounting surface, and the hemispherical limiting screw is screwed in the limiting base;
a limiting groove of the second limiting mechanism penetrates through a mounting hole at one end, far away from the two-dimensional rotating unit, of the extending rod, the upper end of the second limiting mechanism is fixed on the two-dimensional rotating unit frame, the lower end of the second limiting mechanism is attached to and pressed against the spherical surface of the hemispherical limiting screw, the limiting base is fixed on the detector mounting surface, and the hemispherical limiting screw is screwed in the limiting base;
and the brake is arranged on the rotating shaft of the two-dimensional rotating unit, the stator of the brake is fixed on the end surface of the bearing hole of the two-dimensional rotating unit, and the rotor of the brake is fixed in the driven shaft.
Furthermore, pi-shaped reinforcing ribs are connected between the antenna compression point mounting holes and the mounting flange, and the four antenna compression points are connected with the servo mechanism through the mounting flange.
Furthermore, the spherical surface of the hemispherical limit screw is tightly attached to the limit groove to limit five degrees of freedom of the servo mechanism, and the remaining one degree of freedom along the axial direction of the hemispherical limit screw is limited by the compression release mechanism distributed around the antenna.
Further, the compression release mechanism comprises a compression screw rod, the compression screw rod penetrates through the antenna mounting hole and is screwed into the detector mounting surface threaded hole, and the antenna is fixed on the detector mounting surface.
Furthermore, the material of the limiting groove is titanium alloy, the material of the hemispherical limiting screw is stainless steel, and MoS is coated on the matching surface of the limiting groove and the hemispherical limiting screw2And (5) preventing cold welding of the solid film.
According to the high-torque anti-interference antenna pointing mechanism for deep space detection, the first limiting mechanism and the second limiting mechanism are matched with the pressing and releasing mechanism for use, the limiting and fixing effects on the servo mechanism can be achieved without installing a pressing screw, and the problem that the pressing screw at the pressing point of the servo mechanism cannot be installed and operated is solved; a brake is arranged on a rotating shaft of the two-dimensional rotating mechanism, and after the brake is electrified, the rotating shaft holding torque is increased, so that the anti-interference performance of the servo mechanism in a stall holding mode is improved.
Drawings
The invention is further described with reference to the accompanying drawings:
fig. 1 is a schematic perspective view of a large-moment anti-interference antenna pointing mechanism for deep space exploration according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a servo mechanism according to an embodiment of the present invention;
fig. 3a is a schematic perspective view of a first limiting mechanism or a second limiting mechanism according to an embodiment of the present invention;
fig. 3b is a schematic cross-sectional structure view of the first limiting mechanism or the second limiting mechanism according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a compression release mechanism according to an embodiment of the present invention.
Detailed Description
The high-torque anti-jamming antenna pointing mechanism for deep space exploration, which is proposed by the present invention, is further described in detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are all used in a non-precise ratio for the purpose of facilitating and distinctly aiding in the description of the embodiments of the invention.
The core idea of the invention is that the high-torque anti-interference antenna pointing mechanism for deep space exploration, provided by the invention, has the advantages that the first limiting mechanism and the second limiting mechanism are matched with the pressing and releasing mechanism for use, the limiting and fixing effects on the servo mechanism can be realized without installing a pressing screw, and the problem that the pressing screw of a pressing point of the servo mechanism cannot be installed and operated is solved; a brake is arranged on a rotating shaft of the two-dimensional rotating mechanism, and after the brake is electrified, the rotating shaft holding torque is increased, so that the anti-interference performance of the servo mechanism in a stall holding mode is improved.
FIG. 1 is a schematic structural diagram of a high-torque anti-interference antenna pointing mechanism for deep space exploration according to an embodiment of the present invention; FIG. 2 is a schematic perspective view of a servo mechanism according to an embodiment of the present invention; fig. 3a is a schematic perspective view of a first limiting mechanism or a second limiting mechanism according to an embodiment of the present invention; fig. 3b is a schematic cross-sectional structure view of the first limiting mechanism or the second limiting mechanism according to the embodiment of the present invention. Referring to fig. 1, 2, 3a and 3b, there is provided a high-torque interference-resistant antenna pointing mechanism for deep space exploration, comprising: the servo mechanism 11 comprises a lifting unit 111, the mounting bottom surface of the lifting unit is fixedly connected with the mounting surface of the detector, and the lifting unit is positioned through a pin; the locking unit 112 is installed on the lifting unit 111, and after the servo mechanism 11 lifts the antenna 16 to a position, the locking unit 112 fixes the servo mechanism 11 and supports the antenna 16 at a fixed position; a two-dimensional rotation unit 113 fixedly connected to the antenna 16 via a flange; an extending rod 114, one end of which is connected to the lifting unit 111 and the other end of which is connected to the two-dimensional rotating unit 113; the compaction release mechanism 12 is symmetrically distributed around the antenna 16 by taking the antenna 16 as a center; a first limiting mechanism 13, wherein a limiting groove 131 of the first limiting mechanism passes through a mounting hole at one end of the extending rod 114 close to the two-dimensional rotating unit 113, the upper end of the first limiting mechanism is fixed on the extending rod 114, the lower end of the first limiting mechanism is attached to and pressed against the spherical surface of a hemispherical limiting screw 132, a limiting base 133 is fixed on a detector mounting surface, and the hemispherical limiting screw 132 is screwed in the limiting base 133; a second limiting mechanism 14, wherein a limiting groove 131 of the second limiting mechanism passes through a mounting hole at one end of the extending rod 114 far away from the two-dimensional rotating unit 113, the upper end of the second limiting mechanism is fixed on the frame of the two-dimensional rotating unit 113, the lower end of the second limiting mechanism is attached to and pressed against the spherical surface of a hemispherical limiting screw 132, a limiting base 133 is fixed on the detector mounting surface, and the hemispherical limiting screw 132 is screwed in the limiting base 133; and a brake 15 mounted on the rotating shaft of the two-dimensional rotating unit 113, the stator of which is fixed on the end surface of the bearing hole of the two-dimensional rotating unit 113, and the rotor of which is fixed in the driven shaft.
The stator of the brake 15 is fixed on the end face of the bearing hole of the two-dimensional rotating unit 113 by a screw, and the rotor is fixed in the driven shaft; a normally open brake is adopted, after the brake 15 is electrified, the rotor and the stator generate static moment under the action of electromagnetism to limit the shaft rotation of the servo mechanism 11, and therefore the two-dimensional rotation unit 113 is kept at a fixed position; when the two-dimensional rotation unit 113 stops rotating and is kept, the holding torque is increased through the brake 15, so that the rotating shaft is kept still when the two-dimensional rotation unit 113 is interfered by external torque.
In the embodiment of the invention, pi-shaped reinforcing ribs are connected between the antenna pressing point mounting holes and the mounting flange, and the four antenna pressing points are connected with the servo mechanism 11 through the mounting flange. The spherical surface of the hemispherical limit screw 132 is tightly attached to the limit groove 131 to limit five degrees of freedom of the servo mechanism 11, and the remaining one degree of freedom along the axial direction of the hemispherical limit screw 132 is limited by the compression release mechanism 12 distributed around the antenna.
Fig. 4 is a schematic structural diagram of a compression release mechanism according to an embodiment of the present invention. Referring to fig. 4, the compression release mechanism includes a compression screw 41, and the compression screw 41 is screwed into the detector mounting surface threaded hole through the antenna mounting hole 42 to fix the antenna 16 on the detector mounting surface.
The material of the limiting groove 131 is titanium alloy, the material of the hemispherical limiting screw 132 is stainless steel, and MoS is coated on the matching surface of the limiting groove 131 and the hemispherical limiting screw 1322And (5) preventing cold welding of the solid film.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. A high-torque anti-interference antenna pointing mechanism for deep space exploration, comprising: a servo mechanism, the servo mechanism comprising:
the mounting bottom surface of the lifting unit is fixedly connected with the mounting surface of the detector and is positioned through a pin;
the locking unit is arranged on the lifting unit, and after the servo mechanism lifts the antenna in place, the locking unit fixes the servo mechanism and supports the antenna at a fixed position;
the two-dimensional rotating unit is fixedly connected with the antenna through a flange;
one end of the extending rod is connected with the lifting unit, and the other end of the extending rod is connected with the two-dimensional rotating unit;
the large-moment anti-interference antenna pointing mechanism further comprises:
the compressing and releasing mechanisms are symmetrically distributed around the antenna by taking the antenna as a center;
a limiting groove of the first limiting mechanism penetrates through a first mounting hole at one end, close to the two-dimensional rotating unit, of the extending rod, the upper end of the first limiting mechanism is fixed on the extending rod, the lower end of the first limiting mechanism is attached to and pressed against the spherical surface of the hemispherical limiting screw, the limiting base is fixed on the detector mounting surface, and the hemispherical limiting screw is screwed in the limiting base;
a limiting groove of the second limiting mechanism penetrates through a second mounting hole at one end, close to the two-dimensional rotating unit, of the extending rod, the upper end of the second limiting mechanism is fixed on the two-dimensional rotating unit frame, the lower end of the second limiting mechanism is attached to and pressed against the spherical surface of the hemispherical limiting screw, the limiting base is fixed on the detector mounting surface, and the hemispherical limiting screw is screwed in the limiting base;
and the brake is arranged on the rotating shaft of the two-dimensional rotating unit, the stator of the brake is fixed on the end surface of the bearing hole of the two-dimensional rotating unit, and the rotor of the brake is fixed in the driven shaft.
2. The large-moment anti-interference antenna pointing mechanism for deep space exploration according to claim 1, wherein pi-shaped reinforcing ribs are connected between the antenna pressing point mounting holes and the mounting flange, and four antenna pressing points are connected with the servo mechanism through the mounting flange.
3. The high-torque anti-jamming antenna pointing mechanism for deep space exploration according to claim 1, wherein a spherical surface of the hemispherical limit screw abuts against the limiting groove to limit five degrees of freedom of the servo mechanism, and the remaining one degree of freedom along the axial direction of the hemispherical limit screw is limited by the compression release mechanisms distributed around the antenna.
4. The high-moment anti-jamming antenna pointing mechanism for deep space exploration according to claim 1, wherein the compression release mechanism includes a compression screw that passes through the antenna mounting hole and screws into the detector mounting surface threaded hole to fix the antenna on the detector mounting surface.
5. The high-torque anti-interference antenna pointing mechanism for deep space exploration according to claim 1, wherein the material of the limiting groove is titanium alloy, the material of the hemispherical limiting screw is stainless steel, and MoS is coated on the matching surface of the limiting groove and the hemispherical limiting screw2And (5) preventing cold welding of the solid film.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711290551.6A CN108054512B (en) | 2017-12-08 | 2017-12-08 | High-torque anti-interference antenna pointing mechanism for deep space exploration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711290551.6A CN108054512B (en) | 2017-12-08 | 2017-12-08 | High-torque anti-interference antenna pointing mechanism for deep space exploration |
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| Publication Number | Publication Date |
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| CN108054512A CN108054512A (en) | 2018-05-18 |
| CN108054512B true CN108054512B (en) | 2020-09-08 |
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| CN201711290551.6A Active CN108054512B (en) | 2017-12-08 | 2017-12-08 | High-torque anti-interference antenna pointing mechanism for deep space exploration |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105659919B (en) * | 2011-12-12 | 2014-06-04 | 北京空间飞行器总体设计部 | A kind of spaceborne servomechanism system |
| CN110140444B (en) * | 2011-12-14 | 2014-06-25 | 上海宇航系统工程研究所 | A kind of passive developing antenna mechanism |
| US9172128B2 (en) * | 2011-12-23 | 2015-10-27 | Macdonald, Dettwiler And Associates Corporation | Antenna pointing system |
| CN110140443B (en) * | 2014-05-20 | 2017-06-30 | 上海宇航系统工程研究所 | A kind of satellite antenna two-dimensional pointing mechanism of splice type |
| CN107240764A (en) * | 2017-05-22 | 2017-10-10 | 上海宇航系统工程研究所 | The directing mechanism that a kind of spaceborne Complex Radar antenna high rigidity offset is fixed |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8169377B2 (en) * | 2009-04-06 | 2012-05-01 | Asc Signal Corporation | Dual opposed drive loop antenna pointing apparatus and method of operation |
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2017
- 2017-12-08 CN CN201711290551.6A patent/CN108054512B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105659919B (en) * | 2011-12-12 | 2014-06-04 | 北京空间飞行器总体设计部 | A kind of spaceborne servomechanism system |
| CN110140444B (en) * | 2011-12-14 | 2014-06-25 | 上海宇航系统工程研究所 | A kind of passive developing antenna mechanism |
| US9172128B2 (en) * | 2011-12-23 | 2015-10-27 | Macdonald, Dettwiler And Associates Corporation | Antenna pointing system |
| CN110140443B (en) * | 2014-05-20 | 2017-06-30 | 上海宇航系统工程研究所 | A kind of satellite antenna two-dimensional pointing mechanism of splice type |
| CN107240764A (en) * | 2017-05-22 | 2017-10-10 | 上海宇航系统工程研究所 | The directing mechanism that a kind of spaceborne Complex Radar antenna high rigidity offset is fixed |
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| CN108054512A (en) | 2018-05-18 |
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