CN111799559A - Two-dimensional pointing mechanism of waveguide type satellite-borne antenna - Google Patents
Two-dimensional pointing mechanism of waveguide type satellite-borne antenna Download PDFInfo
- Publication number
- CN111799559A CN111799559A CN202010677672.1A CN202010677672A CN111799559A CN 111799559 A CN111799559 A CN 111799559A CN 202010677672 A CN202010677672 A CN 202010677672A CN 111799559 A CN111799559 A CN 111799559A
- Authority
- CN
- China
- Prior art keywords
- axis
- rotary
- rotary joint
- driving assembly
- rotating mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Connection Structure (AREA)
Abstract
The invention discloses a two-dimensional pointing mechanism of a waveguide type satellite-borne antenna, and belongs to the technical field of satellite-borne antennas. The mechanism comprises an X-axis driving component, a Y-axis driving component, an X-axis rotary joint and a Y-axis rotary joint; the X-axis driving assembly and the Y-axis driving assembly adopt the same structural form and comprise a stepping motor, a harmonic reducer and a rotary transformer. The X-axis rotary joint and the Y-axis rotary joint are connected through a waveguide to achieve radio frequency signal transmission. The two groups of double-channel rotary joints and the two groups of driving components synchronously rotate, so that the cable is prevented from being wound, and the reliability of the system is improved; the driving assembly adopts a new layout form, and the optimization of the volume and the weight of the driving structure is realized.
Description
Technical Field
The invention relates to the technical field of satellite-borne antennas, in particular to a two-dimensional pointing mechanism of a waveguide type satellite-borne antenna.
Background
The satellite-borne antenna is one of main loads of a satellite, and has the functions of remote control and remote measurement, satellite-ground data transmission, inter-satellite communication and the like. The two-dimensional pointing mechanism of the satellite-borne antenna for realizing the motion and pointing of the antenna needs to have various spatial environment adaptability.
In a two-dimensional pointing mechanism of a satellite-borne antenna in the prior art, in the aspect of signal transmission, a radio frequency cable form is mostly adopted, and large loss is generated on high-frequency signals; meanwhile, in the aspect of driving form, the motor, the speed reducer, the angle measuring code disc and other parts are connected in series as independent units, and are elastically connected by adopting a shaft coupling or a coupling; this way the pointing mechanism is heavy and bulky; moreover, as the number of connection links is increased, the reliability of the mechanism is reduced.
Disclosure of Invention
In view of this, the present invention provides a two-dimensional pointing mechanism for a waveguide type space-borne antenna, which reduces high-frequency signal loss and improves mechanism reliability.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a two-dimensional pointing mechanism of a waveguide type space-borne antenna comprises an X-axis rotating mechanism and a Y-axis rotating mechanism connected to an output shaft of the X-axis rotating mechanism, wherein the axis of the X-axis rotating mechanism is orthogonal to the axis of the Y-axis rotating mechanism, the X-axis rotating mechanism comprises an X-axis driving assembly and an X-axis rotating support, and the Y-axis rotating mechanism comprises a Y-axis driving assembly and a Y-axis rotating support; the shaft end of the output shaft of the X-axis driving assembly and the shaft end of the output shaft of the Y-axis driving assembly are both provided with a rotary joint with a radio frequency channel;
the rotary joints comprise static ends and rotary ends; the static end of the Y-axis rotary joint is connected with the rotary end of the X-axis rotary joint through a waveguide, and ports extend out of the rotary end of the Y-axis rotary joint and the static end of the X-axis rotary joint.
Furthermore, the radio frequency channel of the rotary joint is a double radio frequency channel, and the double radio frequency channel comprises two static ends and two rotary ends; two static ends of the Y-axis rotary joint are respectively connected with two rotary ends of the X-axis rotary joint through waveguides.
Further, the X-axis driving assembly and the Y-axis driving assembly respectively comprise a stepping motor, a harmonic reducer and a rotary transformer for measuring a rotation angle; the front end of a driving shaft of the stepping motor is connected with the output shaft through a harmonic reducer, and the rear end of the driving shaft is connected with a rotary transformer.
Furthermore, the stepping motor is a split type stepping motor; the harmonic reducer is a harmonic reducer component; the rotary transformer is a split type rotary transformer.
The invention adopts the technical scheme to produce the beneficial effects that:
1. the invention adopts the waveguide form to transmit the radio frequency signal, reduces the transmission loss and improves the efficiency and the gain of the antenna.
2. The two groups of double-radio-frequency-channel rotary joints and the two groups of driving assemblies realize synchronous rotation, avoid cable winding and improve the reliability of the system.
3. The driving assembly of the invention adopts a stepping motor, a harmonic reducer and a rotary transformer, and the components realize the optimization of the volume and the weight of the driving structure through a new layout mode.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of the X-axis mount of fig. 1.
Fig. 3 is a schematic structural view of the X-axis driving assembly of fig. 1.
Fig. 4 is a schematic structural view of the Y-axis bracket in fig. 1.
Fig. 5 is a schematic structural view of the X-axis rotary joint in fig. 1.
Fig. 6 is a block diagram of the working principle of the present invention.
Fig. 7 is a schematic diagram of an application of the embodiment of the present invention to a satellite antenna.
In the figure: 1. the device comprises an X-axis rotating support, 2 and X-axis driving components, 3 and Y-axis rotating supports, 4 and Y-axis driving components, 5 and a reflector connecting flange, 6 and Y-axis rotating joints, 7 and X-axis rotating joints, 9 and a waveguide, 12 and a static end, 13 and a rotating end, 16 and a shell, 17 and a split type stepping motor, 18 and a driving shaft, 19 and a harmonic reducer component, 20 and an output shaft, 25 and a driving shaft, 26 and a split type rotary transformer.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
A two-dimensional pointing mechanism of a waveguide type space-borne antenna comprises an X-axis rotating mechanism and a Y-axis rotating mechanism connected to an output shaft 20 of the X-axis rotating mechanism, wherein the axis of the X-axis rotating mechanism is orthogonal to the axis of the Y-axis rotating mechanism, the X-axis rotating mechanism comprises an X-axis driving assembly and an X-axis rotating support, and the Y-axis rotating mechanism comprises a Y-axis driving assembly and a Y-axis rotating support; the shaft end of the output shaft of the X-axis driving assembly and the shaft end of the output shaft of the Y-axis driving assembly are both provided with a rotary joint with a radio frequency channel;
the rotary joints comprise static ends and rotary ends; the static end of the Y-axis rotary joint is connected with the rotary end of the X-axis rotary joint through a waveguide, and ports extend out of the rotary end of the Y-axis rotary joint and the static end of the X-axis rotary joint.
Furthermore, the radio frequency channel of the rotary joint is a double radio frequency channel, and the double radio frequency channel comprises two static ends and two rotary ends; two static ends of the Y-axis rotary joint are respectively connected with two rotary ends of the X-axis rotary joint through waveguides.
Further, the X-axis driving assembly and the Y-axis driving assembly respectively comprise a stepping motor, a harmonic reducer and a rotary transformer for measuring a rotation angle; the front end of a driving shaft of the stepping motor is connected with the output shaft through a harmonic reducer, and the rear end of the driving shaft is connected with a rotary transformer.
Furthermore, the stepping motor is a split type stepping motor; the harmonic reducer is a harmonic reducer component; the rotary transformer is a split type rotary transformer.
The following is a more specific example:
as shown in fig. 1, the present embodiment includes an X-axis rotating frame 1, an X-axis driving assembly 2, and a Y-axis rotating frame 3 connected to a Y-axis driving assembly 4. The X-axis rotating support and the Y-axis rotating support are orthogonally distributed. The output of the Y-axis drive assembly is connected to the reflector attachment flange 5 for connection to the reflector of the antenna.
X-axis rotary joint 7 is installed to the axle head of X-axis drive assembly, and Y-axis rotary joint 6 is installed to the axle head of Y-axis drive assembly, and two sets of rotary joints all have two radio frequency channels, can realize the transmission of double-circuit radio frequency signal. The two sets of rotary joints are connected by waveguides 9 of dual radio frequency channels.
The dual radio frequency channels of the rotary joint comprise two stationary ends 12 and two rotary ends 13.
The static end of the Y-axis rotary joint is connected with the rotary end of the X-axis rotary joint through a waveguide, and ports extend out of the rotary end of the Y-axis rotary joint and the static end of the X-axis rotary joint.
And through the static end of the X-axis rotary joint, the two groups of rotary joints transmit radio-frequency signals to the inside of the satellite platform.
Fig. 2 is a schematic view of an X-axis support for supporting an X-axis drive assembly.
FIG. 3 is a schematic diagram of the internal components of the X-axis/Y-axis driving assembly. The X-axis/Y-axis driving assembly is composed of a stepping motor 17, a harmonic reducer assembly 19, an angle measuring rotary transformer 26 and the like, and the outer portion of the X-axis/Y-axis driving assembly is covered with a shell 16. The stepping motor is connected with the harmonic reducer assembly through the driving shaft 18 to realize speed reduction and torque lifting, and the tail end of the harmonic reducer is connected with the output shaft 20 to realize torque output. Meanwhile, two groups of bearings are arranged between the output shaft and the shell 16, so that the rotary supporting function is realized.
The output shaft is connected to a split resolver 26 through a drive shaft 25, so that the resolver detection mechanism has rotation angle information. The tail end of the central shaft of the driving assembly is supported on the shell through a bearing, so that the coaxiality requirement of the rotary motion is met.
As shown in fig. 4, a schematic view of a Y-axis support is shown for connecting the X-axis drive assembly and the Y-axis drive assembly, and arranging the two drive assemblies orthogonally.
Fig. 5 is a schematic view of the X-axis or Y-axis rotary joint. The X-axis or Y-axis rotary joint rotates synchronously with the X-axis or Y-axis driving component. It is divided into a left radio frequency signal transmission channel and a right radio frequency signal transmission channel. The upper part is an input flange of a radio frequency channel, and the lower part is an output flange of the radio frequency channel. The waveguide is adopted for radio frequency signal transmission, so that the signal loss can be reduced.
As shown in fig. 6, the operation principle of the present embodiment is shown in block diagram. The satellite control unit sends out a control command, the movement and pointing functions of the antenna reflector are achieved through the X-axis driving assembly and the Y-axis driving assembly, and meanwhile, angle information of the pointing mechanism is detected through the X-axis rotary transformer and the Y-axis rotary transformer. The receiving and transmitting of radio frequency signals are realized through the X-axis rotary joint and the Y-axis rotary joint.
As shown in fig. 7, an application diagram of the present embodiment to a satellite-borne data transmission antenna is that an antenna reflector is provided at the front end of the two-dimensional pointing mechanism. The satellite-borne data transmission antenna is in a transmitting state, and the two-dimensional pointing mechanism is in a collection state.
Claims (4)
1. A two-dimensional pointing mechanism of a waveguide type space-borne antenna comprises an X-axis rotating mechanism and a Y-axis rotating mechanism connected to an output shaft (0) of the X-axis rotating mechanism, wherein the axis of the X-axis rotating mechanism is orthogonal to the axis of the Y-axis rotating mechanism, and is characterized in that the X-axis rotating mechanism comprises an X-axis driving assembly (2) and an X-axis rotating support (1), and the Y-axis rotating mechanism comprises a Y-axis driving assembly (4) and a Y-axis rotating support (3); the shaft end of the output shaft of the X-axis driving assembly and the shaft end of the output shaft of the Y-axis driving assembly are both provided with a rotary joint with a radio frequency channel;
the rotary joints comprise static ends (12) and rotary ends (13); the static end (12) of the Y-axis rotary joint is connected with the rotary end of the X-axis rotary joint through a waveguide (9), and ports extend out of the rotary end of the Y-axis rotary joint and the static end of the X-axis rotary joint.
2. The two-dimensional pointing mechanism of the waveguide type space-borne antenna as claimed in claim 1, wherein the radio frequency channel of the rotary joint is a dual radio frequency channel, which includes two stationary ends and two rotary ends; two static ends of the Y-axis rotary joint (6) are respectively connected with two rotary ends of the X-axis rotary joint (7) through waveguides.
3. The two-dimensional pointing mechanism of a waveguide type space-borne antenna according to claim 1, wherein the X-axis driving assembly and the Y-axis driving assembly each comprise a stepping motor, a harmonic reducer and a resolver for measuring a rotation angle; the front end of a driving shaft (18) of the stepping motor is connected with the output shaft through a harmonic reducer, and the rear end of the driving shaft is connected with a rotary transformer.
4. The two-dimensional pointing mechanism of a waveguide type space-borne antenna according to claim 1, wherein the stepping motor is a split type stepping motor (17); the harmonic reducer is a harmonic reducer assembly (19); the rotary transformer is a split type rotary transformer (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010677672.1A CN111799559A (en) | 2020-07-14 | 2020-07-14 | Two-dimensional pointing mechanism of waveguide type satellite-borne antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010677672.1A CN111799559A (en) | 2020-07-14 | 2020-07-14 | Two-dimensional pointing mechanism of waveguide type satellite-borne antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111799559A true CN111799559A (en) | 2020-10-20 |
Family
ID=72807009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010677672.1A Pending CN111799559A (en) | 2020-07-14 | 2020-07-14 | Two-dimensional pointing mechanism of waveguide type satellite-borne antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111799559A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112865689A (en) * | 2021-01-04 | 2021-05-28 | 上海宇航系统工程研究所 | Split type diaxon actuating mechanism |
-
2020
- 2020-07-14 CN CN202010677672.1A patent/CN111799559A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112865689A (en) * | 2021-01-04 | 2021-05-28 | 上海宇航系统工程研究所 | Split type diaxon actuating mechanism |
| CN112865689B (en) * | 2021-01-04 | 2022-03-25 | 上海宇航系统工程研究所 | Split type diaxon actuating mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102013573B (en) | Rotating mechanism for spatial two-dimensional antenna | |
| US6950633B2 (en) | Rotary non-contact connector and non-rotary non-contact connector | |
| US20080002934A1 (en) | Rotary joint for data and power transfer | |
| CN207266030U (en) | The antenna fixed station of switch movement and motor-driven integrative | |
| CN212626068U (en) | Two-dimensional pointing mechanism of waveguide type satellite-borne antenna | |
| CN105129074A (en) | Two-channel electric steering engine | |
| CN111799559A (en) | Two-dimensional pointing mechanism of waveguide type satellite-borne antenna | |
| EP3852235A1 (en) | Contactless power supply and data communication device, and system having rotation-drive unit, using same | |
| CN110661078B (en) | Vehicle-ground high-speed laser communication device | |
| CN206516760U (en) | Three-dimensional mobile communication antenna | |
| CN201413410Y (en) | Photoelectric compound rotary connector | |
| CN201298582Y (en) | Multichannel microwave rotary joint | |
| CN113314913A (en) | Rotary joint and conductive slip ring connecting structure for rotary table | |
| CN212136664U (en) | Movable adjustable antenna | |
| US6561304B1 (en) | Rotary actuator assembly | |
| CN216850294U (en) | X-Y axis high-precision directional antenna seat frame | |
| CN116247413A (en) | Antenna pedestal | |
| CN215184508U (en) | Multi-functional Mini SAR system biax servo structure | |
| CN210326139U (en) | Antenna structure capable of synchronously adjusting direction | |
| CN115528428A (en) | Antenna device and base station | |
| CN209774695U (en) | Fine mechanical modular joint structure | |
| CN210270000U (en) | General measurement system for 3G/4G/5G antenna | |
| CN218827843U (en) | Anti-interference communication antenna | |
| CN214625381U (en) | External antenna mechanism capable of adjusting direction | |
| CN219643116U (en) | 5G antenna pole structure with optimizing and adjusting functions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |