A device and method for adjusting the surface profile accuracy of an inflatable antenna.

Abstract

This application provides a device and method for adjusting the surface profile accuracy of an inflatable antenna. The device includes at least an execution module, which comprises: a mounting mechanism including multiple mounting portions disposed on the reflector surface; an adjustment mechanism including multiple adjustment elements, each adjustment element having one end mounted on a corresponding mounting portion; and a drive mechanism disposed within the lower air cavity and mounted on the inner wall of the airbag assembly. The drive mechanism includes multiple drive components, each drive component being connected to the end of a corresponding adjustment element furthest from the mounting portion. Each drive component drives the adjustment element connected to it to adjust the surface profile at the connection point between the reflector surface and the adjustment element. This solution, by setting multiple adjustment elements and drive components, allows for independent and precise adjustment of different positions on the reflector surface, greatly improving the ability to adjust the surface profile accuracy. It achieves fine adjustment of specific positions on the reflector surface, effectively solving the problem of low adjustment accuracy in traditional methods.

Description

Technical Field

[0001] This application relates to the field of inflatable antenna technology, and specifically to a device and method for adjusting the surface profile accuracy of an inflatable antenna. Background Technology

[0002] With the continuous development of communication technology, inflatable antennas have been widely used in satellite communication, emergency communication and other fields due to their advantages such as light weight, portability and deployment. However, during use, the surface accuracy of the reflector of an inflatable antenna is easily affected by external environmental factors (such as temperature and air pressure changes) as well as its own structure and material properties, which can change the antenna's performance.

[0003] Traditional inflatable antennas have their upper and lower air chambers divided into several honeycomb-shaped air bladders by a partition. After a pressure difference is formed between the upper and lower air chambers, the surface shape accuracy adjustment method is mainly achieved by adjusting the air pressure of the air bladder in the corresponding area. However, this method has problems such as low adjustment accuracy and slow response speed. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, this application aims to provide a device and method for adjusting the surface accuracy of an inflatable antenna.

[0005] In a first aspect, this application proposes a surface profile accuracy adjustment device for an inflatable antenna. The inflatable antenna includes a housing, an airbag assembly inside the housing, a first cavity within the airbag assembly, and a reflective film within the first cavity. The reflective film divides the first cavity into an upper air cavity and a lower air cavity, the air pressure in the upper air cavity being greater than the air pressure in the lower air cavity, and the surface of the reflective film located within the lower air cavity being a reflective surface. The adjustment device includes at least an execution module, the execution module comprising:

[0006] The mounting mechanism includes a plurality of mounting portions disposed on the reflective surface;

[0007] An adjustment mechanism, comprising a plurality of adjustment elements, one end of each adjustment element being mounted on a corresponding mounting portion;

[0008] A driving mechanism is disposed in the lower air chamber and mounted on the inner wall of the airbag assembly. The driving mechanism includes multiple driving components, each of which is connected to the end of the corresponding adjustment element away from the mounting portion. Each driving component is used to drive the adjustment element connected to it to adjust the surface shape of the connection between the reflective surface and the mounting portion corresponding to the adjustment element. The corresponding mounting portion is the mounting portion connected to the adjustment element.

[0009] According to the technical solution provided in the embodiments of this application, the adjustment element is a drive rope, one end of the drive rope is connected to the corresponding mounting part, the drive assembly includes a servo motor mounted on the inner wall of the airbag assembly, the output shaft of the servo motor is connected to a transmission wheel, the end of the drive rope away from the mounting part is wound around the transmission wheel, and the servo motor is used to drive the drive rope connected to it to pull the reflective surface away from the upper air cavity.

[0010] According to the technical solution provided in the embodiments of this application, it further includes a measurement module electrically connected to the execution module. The measurement module includes a plurality of measurement components arranged in a circumferential array outside the housing. The measurement components include a projection component and a measurement element. The projection component is used to project a checkerboard-shaped grid light onto the reflective surface so that the reflective surface forms a plurality of grid units. The grid light projected by all the projection components can cover the entire reflective surface. The measurement element is used to sequentially measure the actual three-dimensional information of the grid unit formed by the projection of each corresponding projection component.

[0011] According to the technical solution provided in the embodiments of this application, the mounting part includes a first positioning block mounted on the reflective surface. The first positioning block is provided with a rope fixing component. The reflective surface is also provided with a locking element that cooperates with the rope fixing component. The end of the driving rope away from the driving component passes through the rope fixing component and is locked by the locking element.

[0012] According to the technical solution provided in the embodiments of this application, the reflective surface has two mutually perpendicular virtual diameters, the virtual diameters being the diameters of the projection circles of the reflective surface in the first direction, each virtual diameter having N-1 N equally divided points, and each N equally divided point having a mounting portion at a corresponding point on the reflective surface along the first direction.

[0013] According to the technical solution provided in the embodiments of this application, N is six, the two virtual diameters share the center of the projection circle as a six-equal division point for each virtual diameter, and nine mounting parts are provided on the reflective surface.

[0014] According to the technical solution provided in the embodiments of this application, a plurality of motor brackets are installed on the inner wall of the airbag assembly, and a servo motor is installed on each of the motor brackets.

[0015] Secondly, this application proposes a method for adjusting the surface profile accuracy of an inflatable antenna, implemented based on the surface profile accuracy adjustment device for an inflatable antenna as described above, comprising the following steps:

[0016] Obtain the target surface profile standard of the reflective surface, wherein the target surface profile standard includes the target three-dimensional information of each mesh cell;

[0017] The actual three-dimensional information of each mesh cell is obtained, and each actual three-dimensional information is compared with the corresponding target three-dimensional information to obtain at least one mesh cell to be adjusted and the surface error corresponding to the mesh cell to be adjusted. The surface error is the error between the actual three-dimensional information and the target three-dimensional information.

[0018] Determine whether the mounting part is present within the grid cell to be adjusted;

[0019] If so, the servo motor corresponding to the mounting part is calibrated as the first target motor, and the first adjustment parameter is obtained according to the surface error. The first adjustment parameter includes at least the rotation angle and rotation speed of the first target motor.

[0020] The first target motor is controlled to drive the drive rope connected to it to perform rope winding and unwinding actions under the first adjustment parameters.

[0021] According to the technical solution provided in the embodiments of this application, after determining whether the mounting part is present in the grid cell to be adjusted, the method further includes the following steps:

[0022] If not, obtain at least three mounting parts that are close to the grid unit to be adjusted, and mark the servo motors corresponding to the at least three mounting parts as the second target motors;

[0023] The surface shape error is allocated to each of the second target motors to obtain a second adjustment parameter for each of the second target motors. The second adjustment parameter includes the rotation angle and rotation speed of the second target motor.

[0024] Each of the second target motors is controlled to drive the drive rope connected to it to perform rope winding and unwinding actions under the corresponding second adjustment parameters.

[0025] According to the technical solution provided in the embodiments of this application, the step of allocating the surface error to each second target motor to obtain a second adjustment parameter for each second target motor specifically includes the following steps:

[0026] The center of the grid cell to be adjusted is marked as the grid cell point, and the positions of at least three mounting parts that are close to the grid cell to be adjusted are marked as fixed points;

[0027] The three-dimensional deviation between each fixed point and each grid cell point is obtained respectively;

[0028] Calculate the weighting coefficient for each fixed point based on the three-dimensional deviation between each fixed point and the grid cell point;

[0029] Using the weighting coefficients corresponding to each fixed point, the surface error is allocated to the second target motor corresponding to each fixed point, thereby obtaining the second adjustment parameters for each second target motor.

[0030] Compared with existing technologies, the advantages of this application are as follows: By setting multiple adjustment elements and driving components, this application can independently and precisely adjust different positions of the reflective surface, greatly improving the control capability of surface shape accuracy. Each driving component can precisely drive the adjustment element connected to it as needed, thereby achieving fine adjustment of specific positions of the reflective surface and effectively solving the problem of low control accuracy in traditional methods. The driving mechanism is directly connected to the adjustment element, enabling rapid response to changes in surface shape accuracy. When a change in the surface shape of the reflective surface is detected, the driving component can quickly drive the adjustment element to adjust, improving the antenna's response speed and working efficiency. Attached Figure Description

[0031] Figure 1 A schematic diagram of the surface profile accuracy adjustment device for an inflatable antenna provided in an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the structure of the drive assembly and adjustment element provided in the embodiments of this application;

[0033] Figure 3 A flowchart illustrating the steps of a method for adjusting the surface profile accuracy of an inflatable antenna provided in an embodiment of this application.

[0034] The text labels in the image represent:

[0035] 1. Inflatable antenna; 2. Reflector; 3. Drive rope; 4. Base; 5. Measurement module; 6. Container bottom plate; 7. First positioning block; 8. Rope fixing assembly; 9. Locking element; 10. Servo motor; 11. Motor bracket; 12. Transmission wheel; 13. Second positioning block. Detailed Implementation

[0036] The present application will now be described in further detail 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 not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] Example 1

[0039] As mentioned in the background section, this application proposes a surface profile accuracy adjustment device for an inflatable antenna 1 to address the problems in the prior art. The inflatable antenna 1 includes a housing, within which an airbag assembly is provided. The airbag assembly has a first cavity, and within the first cavity is a reflective film. The reflective film divides the first cavity into an upper air cavity and a lower air cavity. The air pressure in the upper air cavity is greater than the air pressure in the lower air cavity. The surface of the reflective film located within the lower air cavity is a reflective surface 2. This adjustment device includes at least an execution module; please refer to [reference needed]. Figure 1 As shown, the execution module includes:

[0040] The mounting mechanism includes a plurality of mounting parts disposed on the reflective surface 2;

[0041] Specifically, during the manufacturing process of the inflatable antenna 1, the upper air cavity wall, the lower air cavity wall, and the reflective film are produced separately. The upper air cavity wall and the lower air cavity wall each have a pre-set opening that matches the shape and size of the reflective film. After production, the reflective film is attached to the junction of the upper and lower air cavities, making it a common part of the upper and lower air cavity walls. Therefore, when the air pressure in the upper air cavity is controlled to be greater than that in the lower air cavity to form an air pressure difference, the reflective film can be made to form a parabolic shape corresponding to the air pressure difference. The inflatable antenna 1 is installed on the base, which can be fixed to the container bottom plate 6.

[0042] Furthermore, the reflective surface 2 has two mutually perpendicular virtual diameters, which are the diameters of the projection circles of the reflective surface 2 in the first direction. Each virtual diameter has N-1 N equally divided points, and each N equally divided point is provided with a mounting part at a corresponding point on the reflective surface 2 along the first direction. Specifically, the first direction is a direction perpendicular to the ground.

[0043] Furthermore, N is six, the two virtual diameters share the center of the projection circle as a six-equal division point for each virtual diameter, and the reflective surface 2 is provided with nine mounting parts.

[0044] Specifically, each virtual diameter has five six-part division points, including the center. Since the center is shared, the two virtual diameters have a total of nine six-part division points. Therefore, these nine six-part division points along the first direction are respectively bonded to the mounting parts at corresponding points on the reflective surface 2 using strong adhesive.

[0045] An adjustment mechanism, comprising a plurality of adjustment elements, one end of each adjustment element being mounted on a corresponding mounting portion;

[0046] A driving mechanism is disposed in the lower air chamber and mounted on the inner wall of the airbag assembly. The driving mechanism includes multiple driving components. Each driving component is connected to the end of the corresponding adjusting element away from the mounting part. Each driving component is used to drive the adjusting element connected to it to adjust the surface shape of the connection between the reflective surface 2 and the mounting part corresponding to the adjusting element. The corresponding mounting part is the mounting part connected to the adjusting element.

[0047] In a preferred embodiment, please refer to Figure 2 As shown, the adjustment element is a drive rope 3, one end of which is connected to the corresponding mounting part. The drive assembly includes a servo motor 10 mounted on the inner wall of the airbag assembly. The output shaft of the servo motor 10 is connected to a transmission wheel 12. The end of the drive rope 3 away from the mounting part is wound around the transmission wheel 12. The servo motor 10 is used to drive the drive rope 3 connected to it to perform rope winding and unwinding actions, thereby driving the corresponding mounting part to move, so as to adjust the surface shape of the connection between the reflective surface 2 and the mounting part.

[0048] Specifically, when it is necessary to adjust the surface shape at a certain point, the servo motor 10 can be controlled to rotate forward, and a certain amount of the drive rope 3 can be wound up to pull the surface shape at the connection between the reflective surface 2 and the mounting part away from the upper air cavity. When the pulling degree is too large and it is necessary to reduce the pulling degree, the servo motor 10 can be controlled to rotate in reverse, and a certain amount of the drive rope 3 can be released to reduce the degree to which the surface shape at the connection between the reflective surface 2 and the mounting part is pulled away from the upper air cavity.

[0049] Furthermore, a plurality of motor brackets 11 are installed on the inner wall of the airbag assembly, and a servo motor 10 is installed on each of the motor brackets 11.

[0050] Specifically, it also includes a second positioning block 13, which is attached to the inner wall of the airbag assembly with strong adhesive. A motor bracket 11 is mounted on the second positioning block 13, and a servo motor 10 is mounted on the motor bracket 11. The position of the motor must be selected to match the layout and movement direction of the drive rope 3 in order to effectively transmit power. The output shaft of the servo motor 10 is tightly connected to the transmission wheel 12, and a key connection, coupling, or other method can be used to ensure reliable transmission. The diameter and shape of the transmission wheel 12 must be designed according to the specifications and adjustment requirements of the drive rope 3 to achieve reasonable tension transmission and rope length control. The end of the drive rope 3 away from the mounting part is neatly wound on the transmission wheel 12 to ensure tight winding and no slippage. The transmission wheel 12 has allowance for adjusting the length of the drive rope 3. During the winding process, care must be taken to maintain uniform tension of the drive rope 3 to avoid local over-tightness or over-looseness. The servo motor 10 receives control signals and precisely controls its rotation direction and speed, thereby driving the transmission wheel 12 to rotate, causing the drive rope 3 to perform the winding and unwinding actions. By adjusting the parameters of the motor, fine adjustments can be made to different positions of the reflector 2.

[0051] In a preferred embodiment, the system further includes a measurement module 5 electrically connected to the execution module. The measurement module 5 includes a plurality of measurement components arranged in a circumferential array outside the housing. Each measurement component includes a projection component and a measurement element. The projection component is used to project a checkerboard-shaped grid of light onto the reflective surface 2, so that the reflective surface 2 forms a plurality of grid cells. All the grid lights projected by the projection components can cover the entire reflective surface 2. The measurement element is used to sequentially measure the actual three-dimensional information of each corresponding grid cell projected by the projection component.

[0052] Specifically, to meet the requirements of visual inspection, the shell of the inflatable antenna is made of a transparent material that allows light to pass through, such as polyester film (PET), polyurethane (PU) film, or polyvinyl chloride (PVC) film. These materials all achieve a transparent effect. Preferably, polyester film (PET) and polyurethane (PU) film have better light transmittance, allowing structured light to pass through. The thickness of these materials can be adjusted. The measurement module 5 includes three measurement components arranged in a circumferential array outside the shell. The angle between any two measurement components is 120 degrees. A sufficient number of projection components are evenly distributed on the circumference of the array. The first direction is defined by the line connecting the center of the circumference of the array and the center of the projection circle of the reflecting surface 2 along the first direction. The light projected by all the projection components is like a mosaic. Figure 1 In this way, it can be ensured that the entire 360-degree reflective surface 2 is covered with the projected checkerboard grid light.

[0053] Specifically, the measurement module 5 can also be installed on the container floor 6. The measurement module 5 is used to transmit the aforementioned control signals to the execution module. The projection component is a projector, and the measurement component is a binocular camera. The projector projects checkerboard-shaped grid light onto the reflective surface 2. The binocular camera measures the actual three-dimensional information of the reflective surface 2 grid by grid cell. Based on the feedback from the binocular camera and the surface shape standard of the reflective surface 2, it is determined which grid cell's surface shape needs fine-tuning. Then, a control signal is sent to the servo motor 10 corresponding to that grid cell. After receiving the control signal, the servo motor 10 controls its rotation, thereby driving the transmission wheel 12 to rotate and wind the drive rope 3, so that the drive rope 3 pulls the reflective surface 2 at the grid cell away from the upper air cavity, so that its surface shape meets the surface shape standard.

[0054] In a preferred embodiment, the mounting part includes a first positioning block 7 mounted on the reflective surface 2. The first positioning block 7 is provided with a rope fixing assembly 8. The reflective surface 2 is also provided with a locking element 9 that cooperates with the rope fixing assembly 8. The end of the drive rope 3 away from the drive assembly passes through the rope fixing assembly 8 and is locked by the locking element 9.

[0055] Specifically, the rope fixing component 8 can be a hole, hook, or clamp. The function of the rope fixing component 8 is to provide a fixing point for the drive rope 3, allowing it to be stably connected to the mounting part. The size and shape of the rope fixing component 8 must match the specifications of the drive rope 3 to ensure that the drive rope 3 can pass through smoothly and be fixed therein. For example, if it is a hole structure, the diameter of the hole should be slightly larger than the diameter of the drive rope 3 so that the drive rope 3 can pass through easily. The locking element 9 can be a snap, nut, or clamp. After the end of the drive rope 3 away from the drive assembly passes through the rope fixing component 8, the locking element 9 is used to lock the drive rope 3, preventing it from loosening during adjustment. The locking element 9 should be easy and quick to operate, allowing the drive rope 3 to be quickly fixed or released when needed. At the same time, the locking element 9 must have sufficient strength and reliability to ensure that it will not be damaged or fail during adjustment. Pass one end of the drive rope 3 through the rope fixing component 8, and then lock it using the locking element 9.

[0056] Specifically, during operation, it is essential to ensure that the tension of the drive rope 3 is appropriate. It should not be too loose, which would prevent the reflective surface 2 from being effectively pulled, nor too tight, which would affect the structural stability of the reflective surface 2. The tension of the drive rope 3 can be fine-tuned by adjusting the tightness of the locking element 9 to achieve the best surface adjustment effect. Simultaneously, the connection and fixation of the drive rope 3 should be checked regularly to ensure that it does not loosen or fall off during use.

[0057] Example 2

[0058] Based on Example 1, this example proposes a method for adjusting the surface profile accuracy of an inflatable antenna 1, implemented using the surface profile accuracy adjustment device for an inflatable antenna 1 as described in Example 1. Please refer to [link / reference]. Figure 3 This includes the following steps:

[0059] S1. Obtain the target surface profile standard of the reflective surface 2, wherein the target surface profile standard includes the target three-dimensional information of each mesh cell;

[0060] Specifically, the target surface profile standard is usually determined based on the design requirements and expected performance of the inflatable antenna 1. The ideal three-dimensional information of each grid cell can be obtained through theoretical calculations and computer simulations (e.g., using specialized antenna design software to model and simulate parameters such as the antenna's operating frequency band, gain requirements, and beam pointing). This target three-dimensional information can include the coordinate values ​​of each vertex of the grid cell in the three-dimensional coordinate system, as well as the curvature of the reflecting surface 2 within the grid cell.

[0061] S2. Obtain the actual three-dimensional information of each mesh unit, and compare each actual three-dimensional information with the corresponding target three-dimensional information to obtain at least one mesh unit to be adjusted and the surface error corresponding to the mesh unit to be adjusted. The surface error is the error between the actual three-dimensional information and the target three-dimensional information.

[0062] Specifically, the actual 3D information of each mesh cell is read one by one and compared with the corresponding target 3D information. For example, the actual and target 3D information of each mesh cell are input into the error model. The error model outputs the surface error. The inputs to the error model are the actual and target coordinate values ​​of each vertex of each mesh cell in the 3D coordinate system, as well as the actual and target curvature of the reflecting surface 2 in the mesh cell. The output is the surface error of the reflecting surface 2 in that mesh cell. When the error between the actual and target 3D information of a mesh cell exceeds a preset threshold, that mesh cell is identified as a mesh cell to be adjusted, and the corresponding surface error value is recorded.

[0063] S3. Determine whether the mounting part is present in the grid cell to be adjusted;

[0064] Specifically, the control system pre-stores the position coordinates of each mounting part on the reflective surface 2 (these coordinates correspond to the overall coordinate system of the reflective surface 2 and are precisely recorded during the installation of the mounting parts). For each grid cell to be adjusted, based on its own coordinate range and vertex information, the control system uses coordinate comparison and region judgment algorithms to determine whether there is a coordinate position point corresponding to the mounting part within the region of the grid cell, thereby making a judgment on whether the mounting part is included.

[0065] S4. If so, the servo motor 10 corresponding to the mounting part is calibrated as the first target motor, and the first adjustment parameter is obtained according to the surface error. The first adjustment parameter includes at least the rotation angle and rotation speed of the first target motor.

[0066] For example, the surface error is input into the first adjustment model, and the first adjustment model outputs the first adjustment parameter. The first adjustment model is trained through a first sample set, which includes several surface error samples and the first adjustment parameter corresponding to each surface error sample.

[0067] S5. Control the first target motor to drive the drive rope 3 connected to it to perform rope winding and unwinding actions under the first adjustment parameters.

[0068] Specifically, the control system generates a control signal for the first target motor based on the obtained first adjustment parameters. This control signal includes the motor's rotation direction (determined by the sign of the rotation angle, with a positive angle corresponding to forward rotation and a negative angle corresponding to reverse rotation), rotation speed, and related control information such as start and stop.

[0069] In a preferred embodiment, after determining whether the mounting portion is present within the grid cell to be adjusted, the method further includes the following steps:

[0070] If not, obtain at least three mounting parts that are close to the grid unit to be adjusted, and calibrate the servo motors 10 corresponding to the at least three mounting parts as the second target motors;

[0071] The surface shape error is allocated to each of the second target motors to obtain a second adjustment parameter for each of the second target motors. The second adjustment parameter includes the rotation angle and rotation speed of the second target motor.

[0072] Each of the second target motors is controlled to drive the drive rope 3 connected to it to perform rope winding and unwinding actions under the corresponding second adjustment parameters.

[0073] Further, the step of allocating the surface shape error to each of the second target motors to obtain the second adjustment parameters for each of the second target motors specifically includes the following steps:

[0074] The center of the grid cell to be adjusted is marked as the grid cell point, and the positions of at least three mounting parts that are close to the grid cell to be adjusted are marked as fixed points;

[0075] Calculate the weighting coefficient for each fixed point based on the three-dimensional deviation between each fixed point and the grid cell point;

[0076] Specifically, the differences in three-dimensional space between the grid cell point P to be adjusted and three surrounding fixed points (p1, p2, p3) are calculated. By establishing a local coordinate system with the fixed points as the origin, the coordinate differences between the grid cell point P and the fixed points in the local coordinate system are calculated respectively, to obtain the three-dimensional deviation between each fixed point and the grid cell point. The weighting coefficients can be obtained using the inverse distance weighting method, i.e., by the following formula:

[0077] ;

[0078] in, These are the weighting coefficients for the i-th fixed point, where i = 1, 2, 3. Let be the three-dimensional deviation from the i-th fixed point to the grid cell point P.

[0079] Using the weighting coefficients corresponding to each fixed point, the surface error is allocated to the second target motor corresponding to each fixed point, thereby obtaining the second adjustment parameters for each second target motor.

[0080] Specifically, the product of the weighting coefficient and the surface error for each fixed point is used as the allocation error for that fixed point. This allocation error is then input into the first adjustment model in the same way. The first adjustment model outputs second adjustment parameters, where the second adjustment parameter for each fixed point is the second adjustment parameter for the corresponding second target motor. The three second target motors, working collaboratively under their respective second adjustment parameters, can correct the surface error. During the adjustment process, the system continuously monitors whether the adjustment is in place and whether any new errors have emerged, and transmits the feedback information to the control system, forming a closed-loop control.

[0081] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A device for adjusting the surface profile accuracy of an inflatable antenna, characterized in that, The inflatable antenna (1) includes a housing, an airbag assembly inside the housing, a first cavity inside the airbag assembly, a reflective film inside the first cavity, the reflective film dividing the first cavity into an upper air cavity and a lower air cavity, the air pressure in the upper air cavity being greater than the air pressure in the lower air cavity, and the surface of the reflective film located inside the lower air cavity being a reflective surface (2); the control device includes at least an execution module, the execution module including: The mounting mechanism includes a plurality of mounting parts disposed on the reflective surface (2); An adjustment mechanism, comprising a plurality of adjustment elements, one end of each adjustment element being mounted on a corresponding mounting portion; A driving mechanism is provided in the lower air chamber and installed on the inner wall of the airbag assembly. The driving mechanism includes multiple driving components. Each driving component is connected to the end of the corresponding adjustment element away from the mounting part. Each driving component is used to drive the adjustment element connected to it to adjust the surface shape of the reflective surface (2) at the connection point with the mounting part corresponding to the adjustment element. The corresponding mounting part is the mounting part connected to the adjustment element.

2. The surface profile accuracy adjustment device for an inflatable antenna according to claim 1, characterized in that: The adjustment element is a drive rope (3), one end of which is connected to the corresponding mounting part. The drive assembly includes a servo motor (10) mounted on the inner wall of the airbag assembly. The output shaft of the servo motor (10) is connected to a transmission wheel (12). The end of the drive rope (3) away from the mounting part is wound around the transmission wheel (12). The servo motor (10) is used to drive the drive rope (3) connected to it to perform rope winding and unwinding actions, thereby driving the corresponding mounting part to move, so as to adjust the surface shape of the reflective surface (2) at the connection with the mounting part.

3. The surface profile accuracy adjustment device for an inflatable antenna according to claim 2, characterized in that: It also includes a measurement module (5) electrically connected to the execution module. The measurement module (5) includes multiple measurement components arranged in a circumferential array outside the housing. The measurement components include a projection component and a measurement element. The projection component is used to project checkerboard-shaped grid light onto the reflective surface (2) so that the reflective surface (2) forms a number of grid units. The grid light projected by all the projection components can cover the entire reflective surface (2). The measurement element is used to sequentially measure the actual three-dimensional information of the grid unit formed by the projection of each corresponding projection component.

4. The surface profile accuracy adjustment device for an inflatable antenna according to claim 3, characterized in that: The mounting part includes a first positioning block (7) mounted on the reflective surface (2), the first positioning block (7) is provided with a rope fixing assembly (8), the reflective surface (2) is also provided with a locking element (9) that cooperates with the rope fixing assembly (8), the end of the drive rope (3) away from the drive assembly passes through the rope fixing assembly (8) and is locked by the locking element (9).

5. The surface profile accuracy adjustment device for an inflatable antenna according to claim 4, characterized in that: The reflective surface (2) has two mutually perpendicular virtual diameters, which are the diameters of the projection circles of the reflective surface (2) in the first direction. Each virtual diameter has N-1 N equally divided points, and each N equally divided point is provided with a mounting part at the corresponding point on the reflective surface (2) along the first direction.

6. The surface profile accuracy adjustment device for an inflatable antenna according to claim 5, characterized in that: N is six, and the two virtual diameters share the center of the projection circle as a six-equal division point for each virtual diameter. The reflective surface (2) is provided with nine mounting parts.

7. The surface profile accuracy adjustment device for an inflatable antenna according to claim 6, characterized in that: A plurality of motor brackets (11) are installed on the inner wall of the airbag assembly, and a servo motor (10) is installed on each of the motor brackets (11).

8. A method for adjusting the surface profile accuracy of an inflatable antenna, implemented based on the surface profile accuracy adjustment device for an inflatable antenna as described in any one of claims 3-7, characterized in that: Includes the following steps: Obtain the target surface profile standard of the reflective surface (2), wherein the target surface profile standard includes the target three-dimensional information of each mesh cell; The actual three-dimensional information of each mesh cell is obtained, and each actual three-dimensional information is compared with the corresponding target three-dimensional information to obtain at least one mesh cell to be adjusted and the surface error corresponding to the mesh cell to be adjusted. The surface error is the error between the actual three-dimensional information and the target three-dimensional information. Determine whether the mounting part is present within the grid cell to be adjusted; If so, the servo motor (10) corresponding to the mounting part is calibrated as the first target motor, and the first adjustment parameter is obtained according to the surface error. The first adjustment parameter includes at least the rotation angle and rotation speed of the first target motor. The first target motor is controlled to drive the drive rope (3) connected to it to perform rope winding and unwinding actions under the first adjustment parameters.

9. The method for adjusting the surface profile accuracy of an inflatable antenna according to claim 8, characterized in that: After determining whether the mounting part exists within the grid cell to be adjusted, the method further includes the following steps: If not, obtain at least three mounting parts that are close to the grid unit to be adjusted, and mark the servo motors (10) corresponding to the at least three mounting parts as the second target motors; The surface shape error is allocated to each of the second target motors to obtain a second adjustment parameter for each of the second target motors. The second adjustment parameter includes the rotation angle and rotation speed of the second target motor. Control each of the second target motors to drive the drive rope (3) connected to it to perform rope winding and unwinding actions under the corresponding second adjustment parameters.

10. The method for adjusting the surface profile accuracy of an inflatable antenna according to claim 9, characterized in that: The step of allocating the surface error to each of the second target motors to obtain the second adjustment parameters for each of the second target motors specifically includes the following steps: The center of the grid cell to be adjusted is marked as the grid cell point, and the positions of at least three mounting parts that are close to the grid cell to be adjusted are marked as fixed points; The three-dimensional deviation between each fixed point and each grid cell point is obtained respectively; Calculate the weighting coefficient for each fixed point based on the three-dimensional deviation between each fixed point and the grid cell point; Using the weighting coefficients corresponding to each fixed point, the surface error is allocated to the second target motor corresponding to each fixed point, thereby obtaining the second adjustment parameters for each second target motor.

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