A spatial planar antenna two-dimensional unfolding and profile control device and a control method thereof

Abstract

The application discloses a kind of space plane antenna two-dimensional development and shape control device and its control method, device includes central star body and plane antenna;Plane antenna includes first active hinge joint, first antenna mainboard, first passive hinge joint, first antenna side plate and microwave deformation measuring equipment;First active hinge joint is configured to adjust the angle of first antenna mainboard;Microwave deformation measuring equipment is configured to measure the displacement of each measuring point of plane antenna from surface, and calculate the shape accuracy of plane antenna.Under the action of active hinge joint and passive hinge joint, the whole plane antenna is developed into plane.Through microwave deformation measuring equipment, the displacement of each measuring point of plane antenna from surface is measured, and the shape accuracy of plane antenna is calculated, and through active hinge joint, the angle of antenna mainboard is adjusted under the premise of maintaining locking stiffness, so that the shape accuracy of plane antenna reaches target accuracy.

Description

Technical Field

[0001] This invention relates to the field of spaceborne deployable antenna mechanism technology, and in particular to a two-dimensional deployment and shape control device and control method for a space planar antenna. Background Technology

[0002] To meet the future demand for ubiquitous global connectivity, low-Earth orbit (LEO) satellite communication plays a crucial role in filling coverage gaps and enhancing the universality of mobile communications. Direct mobile phone connection via satellite provides continuous and seamless communication services to ground users through planar phased array antennas. These antennas change the electronic scanning direction by controlling the feed phase of the radiating elements in the array, better adapting to the rapid movement of LEO satellites and the changing communication needs on the ground. Currently, these antennas rely on space-deployable mechanisms, maintaining a compact folded state during launch and unfolding into their operational form after reaching the designated orbit.

[0003] However, with the increasing demands for performance in direct satellite communication between mobile phones, higher requirements are being placed on the deployable mechanism of planar antennas. These mechanisms must simultaneously meet the requirements of large deployable area, high overall rigidity, and dimensional accuracy, within constraints of folded volume and load weight. Existing planar deployable antennas suffer from issues such as high back support mass and insufficient rigidity in one-dimensional deployment, hindering effective deployment and dimensional control, and thus preventing direct application in direct satellite communication between mobile phones.

[0004] Therefore, existing technologies still need improvement and development. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a two-dimensional deployment and shape control device and method for a spatial planar antenna, which addresses the above-mentioned deficiencies of the prior art. The aim is to solve the problem that the deployment and shape control capabilities of the antenna for direct connection between a mobile phone and a satellite are weak in the prior art.

[0006] The technical solution adopted by this invention to solve the technical problem is as follows: A two-dimensional deployment and shape control device for a space planar antenna, comprising: a central star and a planar antenna; the planar antenna includes: The first active hinge joint is located at the root of the central star; The first antenna motherboard is connected to the first active hinge joint; The first passive hinge joint is connected to the first antenna motherboard; The first antenna side plate is connected to the first passive hinge joint; The first active hinge joint is configured to adjust the angle of the first antenna motherboard. A microwave deformation measurement device is installed on the top of the central star. The microwave deformation measurement device is configured to measure the out-of-plane displacement of each measuring point of the planar antenna and calculate the surface accuracy of the planar antenna.

[0007] The aforementioned two-dimensional deployment and shape control device for a spatial planar antenna, wherein the first active hinge joint comprises: Motor module; The active center shaft is connected to the motor module; The power clutch assembly is sleeved on the active center shaft; The active male hinge is rotatably connected to the active central rotating shaft; The active female hinge is rotatably connected to the active central rotating shaft and is also connected to the power clutch assembly; An angle adjustment component is disposed at the active male hinge and connected to the power clutch component; A stroke compensation component is disposed on the active female hinge and connected to the power clutch component; An active deployment locking component is disposed in the travel compensation component and configured to be connected and locked with the active male hinge; The power clutch assembly is configured to switch between being connected to the active female hinge and being connected to the angle adjustment assembly and the stroke compensation assembly.

[0008] The aforementioned two-dimensional deployment and shape control device for a spatial planar antenna includes a square sliding spline groove formed on the active central rotating shaft; the power clutch assembly includes: The clutch element is sleeved outside the square sliding spline groove; The output tooth is connected to the active female hinge; A hollow worm gear is sleeved outside the active center shaft and connected to the angle adjustment component and the stroke compensation component, respectively. A compression spring provides an elastic force to the clutch element to move toward the hollow worm gear; The clutch element is engaged with the output tooth, or the clutch element is engaged with the hollow worm gear.

[0009] The two-dimensional deployment and shape control device for the space planar antenna, wherein the angle adjustment component includes: Adjust the worm gear, rotate it to the driving male hinge, and mesh it with the hollow worm; The central drive gear is connected to the adjusting worm gear; A longitudinal ball screw is rotatably mounted on the active male hinge; Two drive gears are mounted on the longitudinal ball screw and mesh with the central drive gear. The longitudinal optical axis is located at the active male hinge; The longitudinal slider slides relative to the longitudinal optical axis and engages with the longitudinal ball screw. The longitudinal slider is provided with a cam follower, which abuts against the driving female hinge; The trip compensation component includes: A transverse ball screw is rotatably mounted on the active male hinge; A compensating worm gear is disposed on the transverse ball screw and meshes with the hollow worm gear; The transverse optical axis is located at the active male hinge; A transverse slider slides relative to the transverse optical axis and engages with the transverse ball screw. The active deployment locking component is disposed on the horizontal slider.

[0010] The aforementioned two-dimensional deployment and shape control device for a spatial planar antenna, wherein an active locking boss is formed on the active common hinge, and the active deployment locking component includes: An active locking hook is rotatably mounted on the transverse slider; An active torsion spring is connected to the active locking hook and the transverse slider, respectively. The active torsion spring provides the active locking hook with a torque to rotate toward the active locking boss and achieve locking.

[0011] The aforementioned two-dimensional deployment and shape control device for a spatial planar antenna, wherein the first passive hinge joint comprises: The passive male hinge is equipped with a passive locking boss; A passive center pivot is located at the passive male hinge; The passive female hinge is rotatably mounted on the passive central rotating shaft; A passive locking hook is rotatably mounted on the passive female hinge; A passive torsion spring is connected to the passive locking hook and the passive female hinge, respectively. A constant torque spring is disposed on the passive female hinge and abuts against the passive male hinge; The passive torsion spring provides the passive locking hook with a torque to rotate toward the passive locking boss and achieve locking. The constant torque spring provides the passive male hinge with a torque to rotate toward the passive female hinge.

[0012] The aforementioned two-dimensional deployment and shape control device for a spatial planar antenna, wherein the planar antenna further includes: The second active hinge joint is located on the first antenna main board; The second antenna motherboard is connected to the second active hinge joint; The second passive hinge joint is connected to the second antenna motherboard; The second antenna side plate is connected to the second passive hinge joint; The structure of the second active hinge joint is the same as that of the first active hinge joint. The structure of the second passive hinge joint is the same as that of the first passive hinge joint.

[0013] The two-dimensional deployment and shape control device for the space planar antenna, wherein a root clamping device is provided at the root of the central star, and the root clamping device is configured to clamp the planar antenna to the bottom of the central star; The planar antenna also includes: Both the motherboard clamping device and the first side plate clamping device are located on the first antenna motherboard; The second side plate clamping device is installed on the second antenna main board; The motherboard clamping device is configured to clamp the second antenna motherboard to the first antenna motherboard; The first side plate clamping device is configured to clamp the first antenna side plate to the first antenna main board; The second side plate clamping device is configured to clamp the second antenna side plate to the second antenna main board.

[0014] A control method for a two-dimensional deployment and shape control device for a space planar antenna as described in any of the above claims, comprising the steps of: Control the deployment of the planar antenna; Based on a microwave deformation measurement device, the out-of-plane displacement of each measuring point of the planar antenna is measured, and the surface accuracy of the planar antenna is calculated. Based on the surface accuracy, the first active hinge joint is controlled to optimize the surface accuracy of the planar antenna.

[0015] The control method for the two-dimensional deployment and shape control device of the space planar antenna, wherein the control of the planar antenna deployment includes: Release the root clamping device and control the first active hinge joint to allow the planar antenna to deploy relative to the central star. Release the motherboard clamping device and control the second active hinge joint to allow the second antenna motherboard to unfold relative to the first antenna motherboard; Release the first side plate clamping device to allow the first antenna side plate to unfold relative to the first antenna main board; Release the second side plate clamping device to allow the second antenna side plate to unfold relative to the second antenna main plate; The control method further includes: Based on the surface accuracy, the second active hinge joint is controlled to optimize the surface accuracy of the planar antenna.

[0016] Beneficial effects: The active hinge joint provides the force for unfolding and locking the antenna mainboard, while the passive hinge joint provides the force for unfolding and locking the antenna side plates. Under the action of the active and passive hinge joints, the entire planar antenna unfolds into a planar shape. To adjust the planar attitude of the planar antenna, the out-of-plane displacement of each measuring point of the planar antenna is first measured using a microwave deformation measurement device, and the surface accuracy of the planar antenna is calculated. By adjusting the angle of the antenna mainboard using the active hinge joint while maintaining the locking stiffness, the orientation of the planar antenna is changed, and the surface accuracy of the planar antenna reaches the target accuracy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the two-dimensional unfolding and shape control device for a spatial planar antenna in an embodiment of the present invention.

[0018] Figure 2 This is a first structural schematic diagram of the active hinge joint in the unfolded state in an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the second structure of the active hinge joint in the unfolded state in an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the third structure of the active hinge joint in the unfolded state in an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the fourth structure of the active hinge joint in the unfolded state in an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of the power clutch assembly in an embodiment of the present invention.

[0023] Figure 7 This is a cross-sectional view of the power clutch assembly in an embodiment of the present invention.

[0024] Figure 8 This is a schematic diagram of the angle adjustment component in an embodiment of the present invention.

[0025] Figure 9 This is a schematic diagram of the travel compensation component and the active deployment locking component in an embodiment of the present invention.

[0026] Figure 10 This is a schematic diagram of the passive hinge joint in the folded state in an embodiment of the present invention.

[0027] Figure 11 This is a schematic diagram of the passive hinge joint in the unfolded state in an embodiment of the present invention.

[0028] Figure 12This is a side view of the passive hinge joint in the unfolded state in an embodiment of the present invention.

[0029] Figure 13 This is a schematic diagram illustrating the rotational control of the planar antenna in an embodiment of the present invention.

[0030] Figure 14 This is a schematic diagram of the planar antenna being controlled by a torsion method in an embodiment of the present invention.

[0031] Figure 15 This is an exploded view of the antenna motherboard in an embodiment of the present invention.

[0032] Figure 16 This is a schematic diagram of the two-dimensional deployment of the spatial planar antenna and the deployment process of the shape control device in an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures: 10. Central celestial body; 20. First active hinge joint; 21. Motor module; 22. Active center shaft; 221. Square sliding spline groove; 23. Power clutch assembly; 231. Clutch element; 232. Output tooth; 233. Hollow worm gear; 234. Compression spring; 235. Locking nut; 24. Active male hinge; 241. Active locking boss; 242. Active pressure plate; 25. Active female hinge; 26. Angle adjustment assembly; 261. Adjusting worm gear; 262. Central drive gear; 263. Longitudinal ball screw; 264. Side drive gears; 265. Longitudinal optical shaft; 266. Longitudinal slider; 267. Cam follower; 27. Stroke compensation assembly; 271. Transverse ball screw; 272. Compensating worm gear; 273. Transverse optical shaft; 274. Transverse slider; 28. Active deployment locking assembly; 281. Active locking hook; 282. Active torsion spring; 283. First mounting shaft; 30. First passive hinge joint; 31. Passive male hinge; 311. Second mounting shaft; 312. Roller; 313. Passive pressure plate; 314. Passive locking boss; 32. Passive center pivot; 321. Radial joint bearing; 33. Passive female hinge; 34. Passive locking hook; 35. Passive torsion spring; 36. Constant torque spring; 37. Third mounting shaft; 38. Adjusting screw; 39. Limit pin; 41. First antenna main board; 42. First antenna side plate; 401. Front skin; 402. Back skin; 403. Waveguide support strip; 404. Heat pipe; 405. Side beam; 406. I-beam; 407. Corner connector; 408. Side connector; 409. Cross connector; 50. Microwave deformation measurement equipment; 60. Second active hinge joint; 70. Second passive hinge joint; 81. Second-stage motherboard; 82. Second-stage side panel. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0035] Please also refer to Figures 1-16 This invention provides some embodiments of a two-dimensional deployment and shape control device for a spatial planar antenna.

[0036] like Figure 1 As shown, the two-dimensional deployment and shape control device for a spatial planar antenna of the present invention includes: a central star 10 and a planar antenna; the planar antenna includes: The first active hinge joint 20 is located at the root of the central star 10; The first antenna motherboard 41 is connected to the first active hinge joint 20; The first passive hinge joint 30 is connected to the first antenna motherboard 41; The first antenna side plate 42 is connected to the first passive hinge joint 30; The first active hinge joint 20 is configured to adjust the angle of the first antenna main board 41; a microwave deformation measurement device 50 is provided on the top of the central star 10; the microwave deformation measurement device 50 is configured to measure the out-of-plane displacement of each measuring point of the planar antenna and calculate the surface accuracy of the planar antenna.

[0037] Specifically, the central satellite body 10 is located at the center of the entire satellite antenna, providing a mounting platform for the two planar antennas on either side. There can be multiple planar antennas, which can be arranged in pairs on either side of the central satellite body 10 (e.g., Figure 1 As shown, two first antenna mainboards 41 and two second antenna mainboards 81 are used, so that the central satellite 10 is located between multiple planar antennas. Each planar antenna has at least one antenna mainboard and at least one antenna side plate. Each antenna mainboard can be configured with two antenna side plates, which are located on both sides of the antenna mainboard (e.g., Figure 1 As shown, two first antenna side plates 42 are located on both sides of the first antenna main board 41, and two second antenna side plates 82 are located on both sides of the second antenna main board 81. The antenna main board is connected to another antenna main board, and the antenna main board and the central satellite 10 are located on a straight line, with the antenna side plates located on both sides of this straight line.

[0038] The main antenna board is connected to the central satellite 10 or another main antenna board via an active hinge joint, while the antenna side plate is connected to the main antenna board via a passive hinge joint. By controlling the active hinge joint, the angle of the main antenna board can be actively adjusted, changing the attitude of the planar antenna relative to the central satellite 10, thus achieving shape and surface control of the planar antenna. Before transporting the satellite antenna to space, the planar antenna is folded to the side of the central satellite 10. After the satellite antenna is transported to space and enters its predetermined orbit, the active hinge joint provides the unfolding and locking force for the main antenna board, and the passive hinge joint provides the unfolding and locking force for the antenna side plate. Under the action of the active and passive hinge joints, the entire planar antenna unfolds into a planar shape. To adjust the planar attitude of the planar antenna, the out-of-plane displacement of each measuring point of the planar antenna is first measured using a microwave deformation measurement device 50, and the shape and surface accuracy of the planar antenna is calculated. By adjusting the angle of the main antenna board through the active hinge joint while maintaining the locking stiffness, the orientation of the planar antenna is changed, and the shape and surface accuracy of the planar antenna reaches the target accuracy.

[0039] The antenna unit is supported by the antenna mainboard and antenna side plates, enabling the antenna to communicate with the ground. Microwave deformation measurement devices 50 are symmetrically arranged on both sides of the top of the central satellite 10, with at least one device on each side, for non-contact measurement of the out-of-surface displacement of the target set on the antenna surface in real time on orbit.

[0040] In a preferred implementation of this invention, such as Figure 1 As shown, the first active hinge joint 20 includes: Motor module 21; The active center shaft 22 is connected to the motor module 21; The power clutch assembly 23 is sleeved on the active center rotating shaft 22; The active male hinge 24 is rotatably connected to the active central rotating shaft 22; The active female hinge 25 is rotatably connected to the active central rotating shaft 22 and connected to the power clutch assembly 23; An angle adjustment component 26 is disposed on the active male hinge 24 and connected to the power clutch component 23; The stroke compensation component 27 is disposed on the active female hinge 25 and connected to the power clutch component 23; An active deployment locking component 28 is disposed on the travel compensation component 27 and configured to be connected and locked to the active male hinge 24; The power clutch assembly 23 is configured to switch between being connected to the active female hinge 25 and being connected to the angle adjustment assembly 26 and the stroke compensation assembly 27.

[0041] Specifically, the motor module 21 drives the active center shaft 22 to rotate. The power clutch assembly 23 enables the separation and engagement of the active center shaft 22 with the active female hinge 25, the angle adjustment assembly 26, and the stroke compensation assembly 27. When the antenna mainboard is in the folded state, the active center shaft 22 and the active female hinge 25 are engaged, while the active center shaft 22 is disengaged from the angle adjustment assembly 26 and the stroke compensation assembly 27. The active male hinge 24 and the active female hinge 25 can rotate freely and unfold the antenna mainboard. At the instant the antenna mainboard is fully unfolded, it drives the power clutch assembly 23 to switch states, causing the active center shaft 22 to disengage from the active female hinge 25 and engage with the angle adjustment assembly 26 and the stroke compensation assembly 27. This allows the motor module 21 to control the stroke compensation assembly 27 for stroke compensation, and simultaneously enables the angle adjustment assembly 26 to adjust the angle of the antenna mainboard and the antenna side plate. The angle adjustment assembly 26 adjusts the angle between the active male hinge 24 and the active female hinge 25 to adjust the angle of the antenna mainboard. After the antenna mainboard is deployed, the active deployment locking assembly 28 locks the antenna mainboard by restricting the rotation of the active male hinge 24 and the active female hinge 25. The travel compensation assembly 27 can adjust the travel of the active deployment locking assembly 28 to match the angle adjustment assembly 26 adjusting the angle between the active male hinge 24 and the active female hinge 25.

[0042] When the active male hinge 24 is connected to the central satellite 10, the active female hinge 25 is connected to the antenna mainboard; when the active female hinge 25 is connected to the central satellite 10, the active male hinge 24 is connected to the antenna mainboard. When the active male hinge 24 is connected to the antenna mainboard, the active female hinge 25 is connected to another antenna mainboard; when the active female hinge 25 is connected to the antenna mainboard, the active male hinge 24 is connected to another antenna mainboard.

[0043] The active male hinge 24 and the active female hinge 25 are mounted on the active central rotating shaft 22 via rolling bearings; the active locking hook 281 is fitted with the first mounting shaft 283 with clearance and can rotate freely; the inner side of the active locking hook 281 is an eccentric arc hook surface, which can hook the active locking boss 241 and eliminate clearance to achieve locking when the active hinge is fully extended; the active torsion springs 282 are installed in pairs at both ends of the active locking hook 281, and the two ends of the active torsion springs 282, after pre-tightening, respectively overlap the locking grooves of the active female hinge 25 and the active locking hook 281 to maintain the pre-tightened state of the locking hook; the front end of the active male hinge 24 is provided with a top hook with a smooth helical curved surface, which gradually lifts the active locking hook 281 when rotating; the active locking boss 241 is a semi-circle that gradually narrows at both ends, and is pressed against the inner side of the front end of the active male hinge 24 by the active pressure plate 242, so that even if there is a deviation between the axis of the active locking hook 281 and the axis of the first mounting shaft 283, clearance-free locking can be achieved.

[0044] In a preferred implementation of this invention, such as Figure 3 , Figure 6and Figure 7 As shown, a square sliding spline groove 221 is formed on the active center rotating shaft 22; the power clutch assembly 23 includes: The clutch element 231 is sleeved on the outside of the square sliding spline groove 221; The output tooth 232 is connected to the active female hinge 25; The hollow worm gear 233 is sleeved on the active center shaft 22 and connected to the angle adjustment component 26 and the stroke compensation component 27 respectively; Compression spring 234 provides an elastic force for the clutch element 231 to move toward the hollow worm gear 233; The clutch element 231 is engaged with the output tooth 232, or the clutch element 231 is engaged with the hollow worm gear 233.

[0045] Specifically, a sliding spline groove, which can be a square sliding spline groove 221, is formed on the active center rotating shaft 22. The clutch element 231 slides on the square sliding spline groove 221 and rotates with the rotation of the active center rotating shaft 22. The clutch element 231 can engage with the output tooth 232 or with the hollow worm gear 233. When the clutch element 231 engages with the output tooth 232, the clutch element 231 is separated from the hollow worm gear 233, and the active male hinge 24 and the active female hinge 25 can be unfolded and folded under the control of the motor module 21, thus realizing the unfolding and folding of the antenna mainboard. When the clutch element 231 engages with the hollow worm gear 233, the clutch element 231 is separated from the output tooth 232, and the active male hinge 24 and the active female hinge 25 can be angled under the control of the motor module 21, thus realizing the angle adjustment of the antenna mainboard.

[0046] When the driving male hinge 24 and driving female hinge 25 are in a folded state, the clutch element 231 engages with the output tooth 232, and the compression spring 234 is compressed and deformed. The motor module 21 drives the driving center shaft 22 to rotate, which in turn drives the driving female hinge 25 to rotate, causing the driving male hinge 24 and driving female hinge 25 to unfold and be locked by the active unfolding locking component 28. Under the elastic force of the compression spring 234, the clutch element 231 separates from the output tooth 232 and engages with the hollow worm gear 233. Then, the motor module 21 can drive the driving center shaft 22 to rotate, which in turn drives the hollow worm gear 233 to rotate. The hollow worm gear 233 adjusts the angle adjustment component 26 and the stroke compensation component 27.

[0047] A first slot is formed on the output tooth 232. A first and second locking protrusions are formed at both ends of the clutch element 231, respectively. A second slot is formed at the end of the hollow worm gear 233. The first locking protrusion can engage with the first slot, and the second locking protrusion can engage with the second slot. There are two second locking protrusions and two second slots, symmetrically arranged. When the first locking protrusion engages with the first slot, the clutch element 231 is engaged with the output tooth 232. After rotating a certain angle, the second locking protrusion engages with the second slot, and the clutch element 231 is engaged with the hollow worm gear 233.

[0048] The motor module 21 transmits power to the active center shaft 22 via a coupling; the active center shaft 22 is mounted on the active male hinge 24 and the active female hinge 25 via rolling bearings; the hollow worm gear 233 is axially positioned by the shoulder of the active center shaft 22 and the locking nut 235, and is connected to the active center shaft 22 via rolling bearings, without transmitting torque between them; the output tooth 232 is fixedly installed at both ends inside the active female hinge 25; the clutch element 231 has a square sliding spline groove 221 in the center, which is clearance-fitted with the square spline part on the active center shaft 22, so that it can transmit torque and slide axially; the compression spring 234 is set between the output tooth 232 and the clutch element 231, and has a preload in the initial state. In the initial retracted state of the active hinge joint, the hexagonal boss of the clutch element 231 engages with the output tooth 232, transmitting the motor output torque to the unfolding locking assembly; when the active hinge joint unfolds to 180°, the compression spring 234 pushes the clutch element 231 to move axially along the sliding spline groove, causing the hexagonal boss to disengage from the output tooth 232 and embed into the concave surface of the hollow worm 233, completing the permanent switching of driving force from the output tooth 232 to the hollow worm 233.

[0049] In a preferred implementation of this invention, such as Figure 2 , Figure 3 and Figure 8 As shown, the angle adjustment component 26 includes: Adjust the worm gear 261 so that it is rotatably mounted on the active male hinge 24 and meshes with the hollow worm 233; The central transmission gear 262 is connected to the adjusting worm gear 261; The longitudinal ball screw 263 is rotatably mounted on the active male hinge 24; Two side transmission gears 264 are disposed on the longitudinal ball screw 263 and mesh with the central transmission gear 262; The longitudinal optical axis 265 is disposed at the active male hinge 24; The longitudinal slider 266 slides relative to the longitudinal optical axis 265 and cooperates with the longitudinal ball screw 263; The longitudinal slider 266 is provided with a cam follower 267, which abuts against the driving female hinge 25.

[0050] Specifically, the hollow worm 233 drives the adjusting worm wheel 261 to rotate, and the central transmission gear 262, the two side transmission gears 264 and the longitudinal ball screw 263 rotate accordingly. Then the longitudinal slider 266 slides along the axial direction of the longitudinal optical axis 265 (or the axial direction of the longitudinal ball screw 263), and drives the cam follower 267 and the driving female hinge 25 to move, which changes the angle between the driving female hinge 25 and the driving male hinge 24.

[0051] The bracket is fixed to the active male hinge 24; the longitudinal rotating shaft is installed at the center of the bracket via rolling bearings; the adjusting worm gear 261 and the central transmission gear 262 are fixed to the longitudinal rotating shaft; the longitudinal ball screw 263 and the longitudinal optical shaft 265 are installed on both sides of the bracket via rolling bearings; the two side transmission gears 264 are fixed to the longitudinal ball screw 263 and mesh with the central transmission gear 262; the longitudinal slider 266 is connected to the longitudinal ball screw 263 and transmits torque, and the longitudinal slider 266 and the longitudinal optical shaft 265 are slidably connected via graphite bushings. The transmission method of the longitudinal ball screw 263 has the advantages of high transmission accuracy and strong load-bearing capacity, which can well meet the requirements of high rigidity and high precision fine adjustment of the active hinge joint during the adjustment stage. Each longitudinal slider 266 is equipped with one ball screw and three sliding optical shafts, which have large rigidity and can well bear the reaction force transmitted by the cam follower 267; the cam follower 267 is fixed to the front end of the longitudinal slider 266. During the adjustment phase, the power is switched from the power clutch assembly 23 to the hollow worm gear 233 and then transmitted to the adjusting worm wheel 261. The rotation of the adjusting worm wheel 261 drives the longitudinal rotating shaft and the central transmission gear 262 to rotate synchronously. Through its meshing with the transmission gears 264 on both sides, it drives the longitudinal ball screw 263 to rotate, thereby driving the longitudinal slider 266 to move linearly along the longitudinal optical axis 265. This causes the cam follower 267 to move up and down on the cam surface of the active male hinge 24, thereby pushing the active male hinge 24 to complete a small angle rotation.

[0052] In a preferred implementation of this invention, such as Figures 2-4 and Figure 9 As shown, the travel compensation component 27 includes: A transverse ball screw 271 is rotatably mounted on the active male hinge 24; A compensating worm gear 272 is disposed on the transverse ball screw 271 and meshes with the hollow worm 233; The transverse optical axis 273 is disposed at the active male hinge 24; The transverse slider 274 slides relative to the transverse optical axis 273 and cooperates with the transverse ball screw 271. The active deployment locking component 28 is disposed on the horizontal slider 274.

[0053] Specifically, the hollow worm 233 drives the compensating worm wheel 272 to rotate, and the transverse ball screw 271 rotates accordingly. The transverse slider 274 slides along the axial direction of the transverse optical axis 273 (or the axial direction of the transverse ball screw 271), thereby adjusting the position of the active deployment locking assembly 28 and providing space for the adjustment of the active male hinge 24 and the active female hinge 25 or further locking them.

[0054] A transverse ball screw 271 is mounted on the active female hinge 25 via rolling bearings; a transverse optical shaft 273 is fixed to the active female hinge 25; a compensating worm gear 272 is fixed to the transverse ball screw 271; a transverse slider 274 is connected to the transverse ball screw 271 and transmits torque, and the transverse slider 274 and the transverse optical shaft 273 are slidably connected via a graphite bushing; preferably, the transmission method of the transverse ball screw 271 has the advantages of high transmission accuracy and strong load-bearing capacity, which can well meet the requirements of high rigidity and high precision fine adjustment of the active hinge joint during the adjustment stage. Each transverse slider 274 is provided with one ball screw and four sliding optical shafts, which have large rigidity and can well bear the reaction force transmitted at the active locking hook 281; the active locking hook 281 is fitted with clearance on the upper part of the transverse slider 274 and can rotate freely around the first mounting shaft 283; the active female hinge 25 is provided with limiting cams on both front ends, which are suitable for limiting the movement trajectory of the active locking hook 281. While the angle adjustment component 26 is working, the hollow worm 233 drives the compensating worm wheel 272 to rotate, which in turn drives the transverse ball screw 271 and the transverse slider 274 to move linearly along the transverse optical axis 273. Preferably, the limit cam curve is designed according to the motion constraint conditions, which can ensure that the transverse slider 274 drives the active locking hook 281 to move synchronously in a linear motion according to the set motion law, thereby completing the stroke compensation for the active hinge joint angle adjustment and realizing the angle fine adjustment of the active hinge joint in the locked state.

[0055] In a preferred implementation of this invention, such as Figure 4 , Figure 5 and Figure 9 As shown, an active locking boss 241 is formed on the active male hinge 24, and the active deployment locking assembly 28 includes: The active locking hook 281 is rotatably mounted on the transverse slider 274; The active torsion spring 282 is connected to the active locking hook 281 and the transverse slider 274 respectively; The active torsion spring 282 provides the active locking hook 281 with a torque to rotate toward the active locking boss 241 and achieve locking.

[0056] Specifically, an active locking boss 241 is formed on the active male hinge 24 to cooperate with the active locking hook 281 to lock the active male hinge 24 and the active female hinge 25. When the active male hinge 24 and the active female hinge 25 rotate, the active locking hook 281 contacts the active locking boss 241, and the active locking boss 241 pushes the active locking hook 281 to rotate, causing the active torsion spring 282 to torsionally deform. After the active locking hook 281 crosses the active locking boss 241, under the action of the active torsion spring 282, the active locking hook 281 rotates and hooks the active locking boss 241.

[0057] In a preferred implementation of this invention, such as Figures 10-12 As shown, the first passive hinge joint 30 includes: The passive male hinge 31 is provided with a passive locking boss 314; A passive center pivot 32 is disposed at the passive male hinge 31; The passive female hinge 33 is rotatably mounted on the passive central rotating shaft 32; The passive locking hook 34 is rotatably mounted on the passive female hinge 33; The passive torsion spring 35 is connected to the passive locking hook 34 and the passive female hinge 33 respectively; A constant torque spring 36 is disposed on the passive female hinge 33 and abuts against the passive male hinge 31; The passive torsion spring 35 provides the passive locking hook 34 with a torque that rotates toward the passive locking boss 314 and locks it; the constant torque spring 36 provides the passive male hinge 31 with a torque that rotates toward the passive female hinge 33.

[0058] Specifically, the passive male hinge 31 and the passive female hinge 33 are rotatably connected via a passive central pivot 32. A radial joint bearing 321 is mounted on the passive central pivot 32. The passive male hinge 31 is connected to the inner ring of the radial joint bearing 321, and the passive female hinge 33 is connected to the outer ring of the radial joint bearing 321. The radial joint bearing 321 is a ball joint, allowing relative rotation of the inner and outer rings and compensating for minor deviations in the axis of the passive central pivot 32. When the passive male hinge 31 and the passive female hinge 33 are folded, the antenna side plate is folded to the side of the antenna main board, and the constant torque spring 36 will twist and deform. When the antenna main board is unfolded, the passive male hinge 31 and the passive female hinge 33 unfold under the action of the constant torque spring 36. Then, the passive locking hook 34 contacts the passive locking boss 314, which pushes the passive locking hook 34 to rotate, causing the passive torsion spring 35 to twist and deform. After the passive locking hook 34 passes over the passive locking boss 314, it rotates under the action of the passive torsion spring 35 and hooks the passive locking boss 314.

[0059] A second mounting shaft 311 is provided on the passive male hinge 31, and a roller 312 is sleeved on the second mounting shaft 311. The second mounting shaft 311 and the roller 312 are in clearance fit, and the roller 312 rotates freely around the second mounting shaft 311. One end of a constant torque spring 36 is fixed to the central cylindrical surface of the passive female hinge 33, and the other end is bent in the opposite direction and pressed against the roller 312. It is used to store elastic potential energy when the passive hinge joint closes and release it when it unfolds, applying a restoring force to the roller 312, thereby driving the passive hinge to unfold. The fixed end of the constant torque spring 36 is close to the central cylindrical surface of the female hinge to form an ineffective deformation zone, which only generates radial force and has no effective torque. The other end forms an effective deformation zone between itself and the roller 312. Since the center distance between the two is constant, the shape and length of the spring in this area remain unchanged, generating a constant elastic reaction force, thereby achieving a stable constant torque output. This constant torque drive method has the advantages of simple structure, small impact at the end, and good synchronization, and has high versatility. The passive locking hook 34 is clearance-fitted to the third mounting shaft 37, allowing it to rotate freely around this shaft. The inner side of the passive locking hook 34 has an arc-shaped hook surface, with its geometric center eccentric relative to the third mounting shaft 37, enabling it to hook onto the passive locking boss 314 after the hinge is fully extended, thus eliminating clearance and locking. A pair of passive torsion springs 35 are installed at both ends of the passive locking hook 34, one end engaging with the locking groove of the passive female hinge 33, and the other end engaging with the locking groove of the passive locking hook 34, with a certain number of preload turns to maintain the preload torque of the passive locking hook 34 in its initial state. The front end of the passive male hinge 31 has a smooth helical surface hook for gradually lifting the passive locking hook 34 during rotation. The passive pressure plate 313 presses the inner side of the front end of the passive male hinge 31. The locking boss is a semi-circle that gradually narrows at both ends, allowing for gapless locking of the passive hinge joint even when the passive locking hook 34 is not aligned with the axis of the passive center pivot 32. The adjusting screw 38 is fixed to the front end face of the passive male hinge 31 and is used to fine-tune the unfolding angle of the passive hinge. A lever is provided at the end of the passive locking hook 34 for manual unlocking of the passive hinge joint during ground testing.

[0060] Passive hinge in the initial state, as Figure 10As shown, in a retracted state, the constant torque spring 36 is bent in the opposite direction and stores elastic potential energy; under the pre-tensioning action of the passive torsion spring 35, the stop end of the passive locking hook 34 is engaged with the limiting pin 39; when the clamping device is released, the restoring torque generated by the constant torque spring 36 returning to its natural state is applied to the passive male hinge 31 through the roller 312, driving it to rotate relative to the passive female hinge 33; subsequently, the top hook contacts the passive locking hook 34 and gradually wedges into the lower end of the passive locking hook 34, and the passive locking hook 34 slides and rises along the surface of the top hook under the elastic force of the passive torsion spring 35; when the passive male hinge 31 rotates to 180°, its front end face abuts against the adjusting screw 38 on the passive female hinge 33 and stops rotating forward; at the same time, the passive locking hook 34 falls back under the action of the passive torsion spring 35 and hooks the passive locking boss 314, realizing the self-locking of the passive hinge joint, as shown. Figure 11 and Figure 12 As shown.

[0061] In a preferred implementation of this invention, such as Figure 1 As shown, the planar antenna further includes: The second active hinge joint 60 is disposed on the first antenna main board 41; The second antenna motherboard 81 is connected to the second active hinge joint 60; The second passive hinge joint 70 is connected to the second antenna motherboard 81; The second antenna side plate 82 is connected to the second passive hinge joint 70; The structure of the second active hinge joint 60 is the same as that of the first active hinge joint 20; the structure of the second passive hinge joint 70 is the same as that of the first passive hinge joint 30.

[0062] Specifically, one or more antenna mainboards can be configured on one side of the central satellite 10. For example, two antenna mainboards can be configured on one side of the central satellite 10. The antenna mainboard connected to the central satellite 10 is the first antenna mainboard 41, and the antenna mainboard away from the central satellite 10 is the second antenna mainboard 81. The first antenna mainboard 41 and the central satellite 10 are connected by a first active hinge joint 20, and the first antenna mainboard 41 and the first antenna side plate 42 are connected by a first passive hinge joint 30. The first antenna mainboard 41 and the second antenna mainboard 81 are connected by a second active hinge joint 60, and the second antenna mainboard 81 and the second antenna side plate 82 are connected by a second passive hinge joint 70. The first active hinge joint 20 and the second active hinge joint 60 use the same active hinge joint. The first passive hinge joint 30 and the second passive hinge joint 70 use the same passive hinge joint.

[0063] In a preferred implementation of this invention, such as Figure 15As shown, both the antenna mainboard and the antenna side panel adopt a frame antenna board, which includes: Aluminum frame; The front skin 401 and the rear skin 402 are located on the front and back of the aluminum frame, respectively. Waveguide support strip 403 and heat pipe 404 are both disposed on the aluminum frame.

[0064] Specifically, the antenna mainboard and antenna side panels adopt similar frame antenna plates, serving as the load-bearing structure for the antenna elements. Both the front skin 401 and the back skin 402 are perforated. The aluminum frame includes side beams 405 and I-beams 406. The side beams 405 are connected by corner connectors 407, and the ends of the side beams 405 and I-beams 406 are connected by side connectors 408. The I-beams 406 are connected by cross connectors 409. Waveguide support strips 403 are longitudinally distributed on the front of the aluminum frame, and heat pipes 404 are distributed laterally and longitudinally on the back of the aluminum frame. The front skin 401 and the back skin 402 are bolted to the aluminum frame. The front skin 401 faces the Earth, and the back skin 402 faces the Sun. The front skin 401 and the back skin 402 enclose the antenna elements within the aluminum frame. Considering installation, rigidity, and thermal conductivity requirements, a lightweight, perforated design was implemented for the front skin 401 and the back skin 402. The side beam 405 is connected to the active hinge joint via a mechanical interface, or it can be connected to the passive hinge joint via a mechanical interface.

[0065] In a preferred embodiment of the present invention, a root clamping device is provided at the root of the central satellite 10, and the root clamping device is configured to clamp the planar antenna to the bottom of the central satellite 10.

[0066] Specifically, a root clamping device is provided on the central satellite 10. When the planar antenna is folded to the side of the central satellite 10, the root clamping device clamps the planar antenna, keeping it in a folded state. After releasing the root clamping device, the planar antenna can be unfolded.

[0067] In a preferred embodiment of the present invention, the planar antenna further includes: Both the motherboard clamping device and the first side plate clamping device are located on the first antenna motherboard 41; The second side plate clamping device is installed on the second antenna main board 81; The motherboard pressing device is configured to press the second antenna motherboard 81 to the first antenna motherboard 41; the first side plate pressing device is configured to press the first antenna side plate 42 to the first antenna motherboard 41; and the second side plate pressing device is configured to press the second antenna side plate 82 to the second antenna motherboard 81.

[0068] Specifically, when the antenna mainboard is folded to the side of another antenna mainboard, the other antenna mainboard is pressed down by the mainboard pressing device. When the antenna side panel is folded to the antenna mainboard, the antenna side panel is pressed down by the side panel pressing device. After releasing the mainboard pressing device, the other antenna mainboard can be unfolded. After releasing the side panel pressing device, the antenna side panel unfolds automatically. The mainboard pressing device is located on the first antenna mainboard 41 and presses down on the second antenna mainboard 81. The first side panel pressing device is located on the first antenna mainboard 41 and presses down on the first antenna side panel 42. The second side panel pressing device is located on the second antenna mainboard 81 and presses down on the second antenna side panel 82.

[0069] This application provides a two-dimensional deployment and shape control device for a large-scale planar antenna in space, capable of two-dimensional deployment and retraction of the planar antenna, planar antenna shape adjustment, and two-dimensional deployment and shape control of the planar antenna. Under the constraints of antenna retraction size and payload weight, this application achieves high retraction ratio during the launch phase, fully utilizing the space envelope resources within the fairing. Upon reaching the predetermined orbit, it can controllably deploy in two dimensions and achieve high-rigidity locking, while also possessing a certain degree of on-orbit shape accuracy maintenance capability, thus better meeting the needs of mobile phone direct satellite connection applications.

[0070] Based on the two-dimensional deployment and shape control device for a space planar antenna described in any of the above embodiments, the present invention also provides a preferred embodiment of a control method for the two-dimensional deployment and shape control device for a space planar antenna.

[0071] The control method of the two-dimensional deployment and shape control device for a spatial planar antenna according to an embodiment of the present invention includes the following steps: Step S100: Deploy the planar antenna. Step S200: Based on the microwave deformation measurement device, measure the out-of-plane displacement of each measuring point of the planar antenna and calculate the surface accuracy of the planar antenna; Step S300: Based on the surface accuracy, control the first active hinge joint to optimize the surface accuracy of the planar antenna.

[0072] Specifically, after the satellite antenna reaches its predetermined orbit, the planar antenna is deployed. Then, using microwave deformation measurement equipment, the out-of-plane displacement of each measuring point of the planar antenna is measured, and the surface accuracy of the planar antenna is calculated. If the deformation accuracy does not meet the target accuracy, the first active hinge joint needs to be controlled to adjust the surface accuracy of the planar antenna to achieve the target accuracy.

[0073] The control method also includes the following steps: Step S400: Based on the surface accuracy, control the second active hinge joint to optimize the surface accuracy of the planar antenna.

[0074] Specifically, when a second antenna motherboard is configured, it is also necessary to control the second active hinge joint according to the surface accuracy to adjust the surface accuracy of the planar antenna in order to achieve the target accuracy.

[0075] Each first antenna mainboard is equipped with two first active hinge joints and two second active hinge joints. Planar antenna shape control methods include, for example... Figure 13 The diagram shows the control achieved by rotating the antenna array, and as shown... Figure 14 The diagram shows modulation achieved by twisting and deforming the antenna array. Preferably, this embodiment preferentially employs... Figure 13 The rotation method shown is used for adjustment. Figure 13 Both the zigzag dashed line and the tilted dashed line represent the attitude of the front planar antenna (which is then adjusted). Figure 14 The torsion method shown is used for local surface fine-tuning. Figure 14 The dashed box represents the attitude of the planar antenna before adjustment, which can reduce the internal stress generated in the antenna array during adjustment. When using rotation adjustment, the two first active hinge joints are adjusted synchronously, and the two second active hinge joints are adjusted synchronously. Viewed from the side where the antenna side plate is located, the planar antenna rotates up and down. When using torsion adjustment, the two first active hinge joints are adjusted asynchronously, and the two second active hinge joints are adjusted asynchronously. Viewed from the side where the second antenna main board is located, the planar antenna rotates up and down. The specific implementation process of the planar antenna shape adjustment method is as follows: First, the antenna is affected by the space heat flow during on-orbit operation, resulting in irregular structural thermal deformation. The out-of-plane displacement of each target point on the antenna array is measured in real time by microwave deformation measurement equipment, and the antenna array plane after on-orbit thermal deformation is fitted to calculate the shape accuracy. Second, with the optimal shape accuracy as the goal, the adjustment amount required for each active hinge joint is calculated. Then, the rotation or torsional deformation of the antenna array is controlled by the paired synchronous or asynchronous rotation of the active hinge joints. Subsequently, the measurement and evaluation are repeated until the shape accuracy meets the design specifications and the target accuracy is achieved.

[0076] Step S100 specifically includes: Step S110: Release the root clamping device and control the first active hinge joint to allow the planar antenna to deploy relative to the central star. Step S120: Release the motherboard clamping device and control the second active hinge joint to allow the second antenna motherboard to unfold relative to the first antenna motherboard; Step S130: Release the first side plate clamping device to allow the first antenna side plate to unfold relative to the first antenna main board; Step S140: Release the second side plate clamping device to allow the second second antenna side plate to unfold relative to the second second antenna main plate.

[0077] Specifically, such as Figure 16 As shown, when deploying the planar antenna, firstly, the root clamping device is released, and the first active hinge joint is controlled to rotate the planar antenna, causing it to deploy 90° relative to the central satellite. Then, the mainboard clamping device is released, and the first and second active hinge joints are controlled to rotate the first and second antenna mainboards, causing the first antenna mainboard to deploy relative to the central satellite, and the second antenna mainboard to deploy relative to the first antenna mainboard, forming a V-shape. Next, the first and second sideplate clamping devices are released, and the first and second antenna sideplates are rotated, causing the first antenna sideplate to deploy 180° relative to the first antenna mainboard, and the second antenna sideplate to deploy 180° relative to the second antenna mainboard. Simultaneously, the first and second active hinge joints are controlled to rotate the first and second antenna mainboards, causing the first antenna mainboard to deploy relative to the central satellite, and the second antenna mainboard to deploy relative to the first antenna mainboard, forming a planar shape. The simultaneous deployment of the planar antennas on both sides helps to counteract the torque generated during deployment. In the final stage of deployment, all antenna mainboards and antenna side panels are deployed simultaneously, resulting in better overall performance. The torque generated during deployment can largely cancel each other out, reducing the impact on the attitude of the central celestial body.

[0078] As can be seen, steps S110, S120, S130, and S140 can be performed simultaneously, with step S110 starting first and continuing to unfold. Step S120 is executed after step S110 and continues to unfold. Steps S130 and S140 are executed last. During the execution phases of steps S130 and S140, steps S110 and S120 can still be executing.

[0079] It should be understood that the application of the present invention is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A two-dimensional deployment and shape control device for a spatial planar antenna, characterized in that, include: Central star and planar antenna; The planar antenna includes: The first active hinge joint is located at the root of the central star; The first antenna motherboard is connected to the first active hinge joint; The first passive hinge joint is connected to the first antenna motherboard; The first antenna side plate is connected to the first passive hinge joint; The first active hinge joint is configured to adjust the angle of the first antenna motherboard. A microwave deformation measurement device is installed on the top of the central star. The microwave deformation measurement device is configured to measure the out-of-plane displacement of each measuring point of the planar antenna and calculate the surface accuracy of the planar antenna.

2. The two-dimensional deployment and shape control device for a spatial planar antenna according to claim 1, characterized in that, The first active hinge joint includes: Motor module; The active center shaft is connected to the motor module; The power clutch assembly is sleeved on the active center shaft; The active male hinge is rotatably connected to the active central rotating shaft; The active female hinge is rotatably connected to the active central rotating shaft and is also connected to the power clutch assembly; An angle adjustment component is disposed at the active male hinge and connected to the power clutch component; A stroke compensation component is disposed on the active female hinge and connected to the power clutch component; An active deployment locking component is disposed in the travel compensation component and configured to be connected and locked with the active male hinge; The power clutch assembly is configured to switch between being connected to the active female hinge and being connected to the angle adjustment assembly and the stroke compensation assembly.

3. The two-dimensional deployment and shape control device for a spatial planar antenna according to claim 2, characterized in that, A square sliding spline groove is formed on the active center rotating shaft; the power clutch assembly includes: The clutch element is sleeved outside the square sliding spline groove; The output tooth is connected to the active female hinge; A hollow worm gear is sleeved outside the active center shaft and connected to the angle adjustment component and the stroke compensation component, respectively. A compression spring provides an elastic force to the clutch element to move toward the hollow worm gear; The clutch element is engaged with the output tooth, or the clutch element is engaged with the hollow worm gear.

4. The two-dimensional deployment and shape control device for a spatial planar antenna according to claim 3, characterized in that, The angle adjustment component includes: Adjust the worm gear, rotate it to the driving male hinge, and mesh it with the hollow worm; The central drive gear is connected to the adjusting worm gear; A longitudinal ball screw is rotatably mounted on the active male hinge; Two drive gears are mounted on the longitudinal ball screw and mesh with the central drive gear. The longitudinal optical axis is located at the active male hinge; The longitudinal slider slides relative to the longitudinal optical axis and engages with the longitudinal ball screw. The longitudinal slider is provided with a cam follower, which abuts against the driving female hinge; The trip compensation component includes: A transverse ball screw is rotatably mounted on the active male hinge; A compensating worm gear is disposed on the transverse ball screw and meshes with the hollow worm gear; The transverse optical axis is located at the active male hinge; A transverse slider slides relative to the transverse optical axis and engages with the transverse ball screw. The active deployment locking component is disposed on the horizontal slider.

5. The two-dimensional deployment and shape control device for a spatial planar antenna according to claim 4, characterized in that, An active locking boss is formed on the active male hinge, and the active deployment locking assembly includes: An active locking hook is rotatably mounted on the transverse slider; An active torsion spring is connected to the active locking hook and the transverse slider, respectively. The active torsion spring provides the active locking hook with a torque to rotate toward the active locking boss and achieve locking.

6. The two-dimensional deployment and shape control device for a spatial planar antenna according to claim 3, characterized in that, The first passive hinge joint includes: The passive male hinge is equipped with a passive locking boss; A passive center pivot is located at the passive male hinge; The passive female hinge is rotatably mounted on the passive central rotating shaft; A passive locking hook is rotatably mounted on the passive female hinge; A passive torsion spring is connected to the passive locking hook and the passive female hinge, respectively. A constant torque spring is disposed on the passive female hinge and abuts against the passive male hinge; The passive torsion spring provides the passive locking hook with a torque to rotate toward the passive locking boss and achieve locking. The constant torque spring provides the passive male hinge with a torque to rotate toward the passive female hinge.

7. The two-dimensional deployment and shape control device for a space planar antenna according to any one of claims 1 to 6, characterized in that, The planar antenna also includes: The second active hinge joint is located on the first antenna main board; The second antenna motherboard is connected to the second active hinge joint; The second passive hinge joint is connected to the second antenna motherboard; The second antenna side plate is connected to the second passive hinge joint; The structure of the second active hinge joint is the same as that of the first active hinge joint. The structure of the second passive hinge joint is the same as that of the first passive hinge joint.

8. The two-dimensional deployment and shape control device for a spatial planar antenna according to claim 7, characterized in that, A root clamping device is provided at the root of the central star, and the root clamping device is configured to clamp the planar antenna to the bottom of the central star; The planar antenna also includes: Both the motherboard clamping device and the first side plate clamping device are located on the first antenna motherboard; The second side plate clamping device is installed on the second antenna main board; The motherboard clamping device is configured to clamp the second antenna motherboard to the first antenna motherboard; The first side plate clamping device is configured to clamp the first antenna side plate to the first antenna main board; The second side plate clamping device is configured to clamp the second antenna side plate to the second antenna main board.

9. A control method for a two-dimensional deployment and shape control device for a space planar antenna as described in any one of claims 1 to 8, characterized in that, Including the following steps: Control the deployment of the planar antenna; Based on a microwave deformation measurement device, the out-of-plane displacement of each measuring point of the planar antenna is measured, and the surface accuracy of the planar antenna is calculated. Based on the surface accuracy, the first active hinge joint is controlled to optimize the surface accuracy of the planar antenna.

10. The control method for the two-dimensional deployment and shape control device of the space planar antenna according to claim 9, characterized in that, The control plane antenna deployment includes: Release the root clamping device and control the first active hinge joint to allow the planar antenna to deploy relative to the central star. Release the motherboard clamping device and control the second active hinge joint to allow the second antenna motherboard to unfold relative to the first antenna motherboard; Release the first side plate clamping device to allow the first antenna side plate to unfold relative to the first antenna main board; Release the second side plate clamping device to allow the second antenna side plate to unfold relative to the second antenna main plate; The control method further includes: Based on the surface accuracy, the second active hinge joint is controlled to optimize the surface accuracy of the planar antenna.

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