CN113219261B - Modular deployable antenna ground deployment test system, control method and application - Google Patents

Abstract

The invention belongs to the technical field of satellite antennas, and discloses a ground deployment test system, control method and application of a modular deployable antenna. A sliding support is fixed, and a rotating support is installed on the upper end of the sliding support. The invention uses the lead frame to limit the direction of the control cable, and the helical groove on the winding wheel is used to limit the rope at the position of the winding wheel to ensure the same release amount of the rope length, ensure the synchronization of the antenna deployment, and solve the problem of Due to the layering of the reel, there is a contradiction between the difference in the spatial distance between the cable segment output end of the reel and the connection point of the next layer of modules and the same length of the control cable released from different layers of the reel; The real-time self-adaptive adjustment of the support angle of the antenna effectively verifies the feasibility of the deployment experiment of the modular deployable antenna on the ground, which facilitates the completion of the test and reduces the difficulty of the ground test.

Description

Modular deployable antenna ground deployment test system, control method and application

technical field

The invention belongs to the technical field of satellite antennas, and in particular relates to a ground deployment test system, control method and application of a modular deployable antenna.

Background technique

At present, the spaceborne deployable antenna is an important part of the satellite structure. With the development of aerospace technology, satellite communication, deep space exploration and other aerospace industries, more and more requirements have been put forward for the spaceborne deployable antenna, mainly including Large caliber, light weight, small volume and stable deployment process. The modular space deployable antenna, as a "module splicing" retractable antenna, will undoubtedly play an important role in the development of satellite antennas in the future. How to conduct reasonable and effective ground experimental research is an important factor in the study of deployable antennas. link.

Since the modular deployable antenna that uses the compression spring as the driving force source is different from the deployable antenna that provides the driving force with flexible cables such as peripheral trusses, the spring has the tendency to always expand under the state of compression and store the elastic energy. It is converted into the kinetic energy of the unfolding motion of the mechanism, and the antenna back frame is always on the changing space surface during the unfolding process. Based on the above characteristics, the current ground deployment control scheme for the modular deployable antenna is mainly to build a suspension truss to hoist the antenna. to complete the ground deployment test. The ground deployment control scheme mainly controls the smooth deployment of the antenna by adding a winding wheel mechanism on the antenna module, and adds a rotating support mechanism to the deployment control device to ensure that it can adapt to the changing back frame surface of the antenna during deployment. Harbin Institute of Technology (Tian Dake. Design and experimental research of modular space deployable antenna support truss [D]. Harbin Institute of Technology, 2011) to establish an antenna suspension truss and conduct ground deployment tests. Since the control cable is directly connected to the next layer of modules after being released from the reel, and since the reel is arranged in layers, the control cables connecting each module are located between different layers. There is no guarantee that the space distance between the release end of the control cable and its corresponding module is the same. At the same time, in the case of large modules and the modules are assembled together, it is difficult to establish a suspension device, which is limited by the limitation of site space, and the height of the antenna is too large. , difficult to install and many other problems.

Through the above analysis, the existing problems and defects in the prior art are: in the prior art, since the drums are arranged in layers, the control cables connecting each module are located between different layers, and the heights corresponding to each layer on the drum are different. , there is no guarantee that the space distance between the release end of the control cable and its corresponding module is the same. At the same time, for large modules and the modules are assembled together, it is difficult to establish the suspension device, which is limited by the limitation of site space, and the height of the antenna is too high. Large, difficult to install and many other problems.

The difficulty of solving the above problems and defects is: it is difficult to ensure the uniformity of the release amount of the control cable and thus the stability of the unwinding process, because if the control cable is simply wound on the winding device without applying guidance and no restrictions on the winding position, It is difficult to ensure the angle and release amount of each control cable, resulting in uneven deployment of the antenna and uneven force of the control cable. At the same time, during the deployment process, the back frame of each module is on a changing space surface. In order to get rid of the deployment experiment of the suspension truss, it is difficult to provide effective support for the antenna, because the height of the supporting point changes all the time.

The significance of solving the above problems and defects is: to ensure the stability of the antenna deployment, which is one of the key issues in the deployment of the antenna structure, and to design a support that integrates rotation and sliding to ensure that the support can adapt to the changes in the curved surface of the antenna deployment. It brings great convenience to the ground experiment.

SUMMARY OF THE INVENTION

Aiming at the problems existing in the prior art, the present invention provides a ground deployment test system, control method and application of a modular deployable antenna. The invention can improve the synchronization of the antenna during the deployment process and improve the high requirements of the ground test on the space site and the installation of the antenna.

The present invention is realized by a modular deployable antenna ground deployment test system, wherein the modular deployable antenna ground deployment test system is provided with a central support;

The central support is located at the end focus of the two sliding rails, and the central support is located on the top of the control device;

A sliding support is fixed on the sliding guide rail, and a rotating support is installed on the upper end of the sliding support.

Further, the upper end of the center support is fixed with a center support lower end platform, the side end surface of the center support lower end platform is installed with two connecting plates, and the center support is connected with the sliding guide rail through the connecting plates;

The platform at the lower end of the central support is a polygon. The number of sides and the angle between the sides of the polygon are determined according to the number of modules of the modular expandable antenna, the orientation of each module and the angle between them.

Further, a supporting side wall is fixed on the upper end of the central support, a central supporting upper platform is fixed on the upper end of the supporting side wall, a rotating support is fixed on the upper end of the central supporting upper platform, and lead frames are fixed on both ends of the bottom surface of the central supporting upper platform.

Further, the lead frame is a cube as a whole, with protruding bosses on both sides, and a fifth through hole is machined on the bosses;

A second spring groove is machined in the fifth through hole for fixing the second miniature bearing, supporting the long axis of the wire and rotating freely;

A rectangular through hole is machined on the side of the lead frame, and a row of sixth through holes is machined on the upper and lower end faces of the lead frame; and a third spring groove is machined in the sixth through hole for placing the third miniature bearing to achieve short lead wires free rotation of the shaft;

The control rope is connected from the long axis of the lead frame on one side to the short axis of the lead on the side of the lead and into the short axis of the lead on the other side. Finally, it is output on the long axis of the lead on the side, and the lead wire on both sides through the lead wire The short axis of the wire passing through the frame is different to realize the change of the direction of the control cable; the friction and wear of the control cable are reduced by the rotation of the long axis of the wire around the second miniature bearing and the short axis of the wire around the third miniature bearing.

Further, a motor is installed on the support side wall, a winding wheel is installed on the output shaft of the motor, and the surface of the winding wheel is processed with a spiral.

Further, the side wall of the reel is machined with a helical groove, and a rope is embedded in the helical groove.

Further, the rotation support is provided with a first rotation support antenna end and a second rotation support support end, and the first rotation support antenna end is connected with the second rotation support support end;

The upper end of the first rotating support antenna is provided with an upper end surface, and the upper end surface is provided with a second through hole; the second rotating support support end is provided with a lower end surface, and the lower end surface is provided with a fourth through hole.

Further, the first rotating support antenna end is used to connect with the antenna module through the second through hole on the upper end surface thereof; The connection of the support column of the sliding support.

Further, the first through hole of the first rotating support antenna end is machined with a counterbore for placing the miniature bearing; the second rotating support support end is machined with a binaural structure, and a third through hole is machined on it; The first circlip grooves are machined on both sides of the antenna, and the connecting shaft passes through the third through holes on both sides, so as to realize the installation of the connecting shaft on the second rotating support end, and the connecting shaft passes through the first rotating support antenna end. The through hole and the bearing hole of the miniature bearing serve to support the end of the first rotating support antenna and make it rotate around the connecting shaft, so as to realize the self-adaptive adjustment of the attitude of the antenna during the unfolding process.

Further, the sliding support is composed of a support column, a sliding support bottom plate, and a sliding bearing, and the support column is connected with the sliding support bottom plate by bolts and nuts through the through hole at the bottom end thereof;

The through holes at the upper end are connected with the second rotating support support end with bolts and nuts, and four groups of through holes are opened at the four corners of the sliding support base plate and are connected with the mounting holes of the sliding bearing through bolts.

Another object of the present invention is to provide a control method of the modular deployable antenna ground deployment test system, the control method of the modular deployable antenna ground deployment test system includes: placing a control cable on a reel, Through the adjustment of the lead frame, it is connected to the sliding support, and the original control cable directly connected to the reel is guided to the direction of its corresponding antenna module; at the same time, the rotation angle of the rotating support changes in real time to meet the requirements of the curved surface of the antenna back frame when the antenna is unfolded. Different degrees of tilt at each moment caused by real-time changes;

The sliding guide rail corresponds to the unfolding track direction of the antenna module connected to the sliding support connected to it, and the two control cables are guided and connected to the sliding support by the reel and the lead frame; the rotating support connects the sliding support 5 and the central support to ensure that the support mechanism meets the requirements of the antenna. The change of the space surface during the unfolding process.

Another object of the present invention is to provide a spaceborne deployable antenna that uses the modular deployable antenna ground deployment test system.

Combined with all the above technical solutions, the advantages and positive effects of the present invention are as follows: the present invention uses a lead frame to limit the direction of the control cable, and the helical groove on the reel restricts the rope in the reel. The position ensures the same release amount of the rope length, ensures the synchronization of the antenna deployment, and solves the difference in the spatial distance between the cable output end of the reel and the connection point of the next layer module due to the layering of the reel and the winding There is a contradiction between the same length of control cables released from different layers of the wheel. Due to the real-time self-adaptive adjustment of the support angle of the antenna by the use of the rotating support, the present invention effectively verifies the feasibility of the modular deployable antenna to carry out the test on the ground, facilitates the completion of the test, and reduces the difficulty of the ground test.

Description of drawings

FIG. 1 is a schematic structural diagram of a ground deployment test system for a modular deployable antenna provided by an embodiment of the present invention.

FIG. 2 is a schematic diagram of a central support structure provided by an embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a winding wheel provided by an embodiment of the present invention.

FIG. 4 is a schematic diagram of a rotating support structure provided by an embodiment of the present invention.

FIG. 5 is a schematic diagram of a second rotating support-antenna end provided by an embodiment of the present invention.

FIG. 6 is a schematic diagram of a first rotary support-support end provided by an embodiment of the present invention.

FIG. 7 is a schematic structural diagram of a lead frame provided by an embodiment of the present invention.

FIG. 8 is a schematic diagram of a sliding support structure provided by an embodiment of the present invention.

FIG. 9 is an exploded schematic diagram of a sliding support provided by an embodiment of the present invention.

FIG. 10 is a schematic diagram of a sliding guide rail provided by an embodiment of the present invention.

FIG. 11 is a schematic diagram of a connection relationship between a sliding guide rail and a central support provided by an embodiment of the present invention.

In the figure: 1. Central support; 2. Rotating support; 21. The first rotating support antenna end; 22, The second rotating support support end; 211, The first through hole; , lower end face; 2111, countersunk hole; 2121, second through hole; 2211, third through hole; 2221, fourth through hole; 23, miniature bearing; 24, connecting shaft; 241, first spring groove; 3, Reel; 31, helical groove; 4, lead frame; 41, boss; 411, fifth through hole; 4111, second spring groove; 42, second miniature bearing; 43, support wire long axis; 44, rectangular through hole; 45, sixth through hole; 451, third spring groove; 46, third miniature bearing; 47, wire stub; 5, sliding support; 51, support column; 52, sliding support bottom plate; 53. Sliding bearing; 6. Sliding guide rail; 11. Motor; 12. Center support upper platform; 13. Center support lower platform; 14. Support side wall; 15. Connecting plate.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

In view of the problems existing in the prior art, the present invention provides a ground deployment test system, control method and application of a modular deployable antenna. The present invention is described in detail below with reference to the accompanying drawings.

A person skilled in the art of the modular deployable antenna ground deployment test system provided by the present invention can also implement other steps. The modular deployable antenna ground deployment test system provided by the present invention in FIG. 1 is only a specific embodiment.

As shown in FIG. 1 , in the modular deployable antenna ground deployment test system provided by the embodiment of the present invention, the central support 1 is located at the end focus of the two sliding guide rails 6 , and the central support 1 is located on the top of the control device for ground test. At the same time, it supports the central module of the modular expandable antenna, and is connected to the motor 11 , the winding wheel 3 , the lead frame 4 , the sliding support 5 and the sliding guide 6 .

A sliding support 5 is fixed on the sliding guide 6, and a rotating support 2 is installed on the upper end of the sliding support 5, so that the antenna can rotate freely;

As shown in FIG. 2 , the center support 1 provided by the embodiment of the present invention is a composite structure, connecting a plurality of main components of a modular deployable antenna ground deployment test system. The upper end of the center support 1 is fixed with a center support lower end platform 13. Two connecting plates 15 are installed on the side end surface of the supporting lower platform 13, and the central support 1 is connected with the sliding guide rail 6 through the connecting plate 15, so as to realize the connection between the central support 1 and the sliding guide rail 6, and ensure the free sliding of the sliding support 5 thereon.

The upper end of the central support 1 is fixed with a supporting side wall 14, the upper end of the supporting side wall 14 is fixed with a central supporting upper platform 12, the upper end of the central supporting upper platform 12 is fixed with a rotating support 2, and both ends of the bottom surface of the central supporting upper platform 12 are fixed with lead frames 4. The support side wall 14 is used to connect the center support upper end platform 12 and the center support lower end platform 13; the center support lower end platform 13 is processed into a polygon, which is determined according to the number of modules of the modular expandable antenna, the orientation of each module and the included angle between them. The polygon gets the number of sides and the angle between the sides.

A motor 11 is installed on the supporting side wall 14, and a winding wheel 3 is installed on the output shaft of the motor 11. The winding wheel 3 is processed with a spiral wire on its surface; wherein, the winding wheel 3 is driven by the motor.

As shown in FIG. 3 , the sidewall of the reel 3 provided by the embodiment of the present invention is machined with a spiral groove 31 . The spiral groove 31 has a certain pitch and lead, and the rope can be embedded in the spiral of the reel 3 . Within the wire groove 31, precise control of the release amount of the rope is ensured, so as to achieve precise and smooth control of the deployment process of the modular deployable antenna.

As shown in FIG. 4 , the rotating support 2 provided in the embodiment of the present invention is provided with a first rotating support antenna end 21 and a second rotating support support end 22, and the first rotating support antenna end 21 is connected with the second rotating support support end 22; The upper end of the first rotating support antenna end 21 is provided with an upper end surface 212 , and the upper end surface 212 is provided with a second through hole 2121 ; The first rotating support antenna end 21 is used to connect with the antenna module through the second through hole 2121 on its upper end surface 212; The connection between the platform 12 and the support column 51 of the sliding support 5 . Counterbore 2111 is machined on the first through hole 211 of the first rotating support antenna end 21 for placing the miniature bearing 23 , the second rotating support end 22 is machined with a binaural structure 221 , and a third through hole 2211 is machined thereon , the first spring grooves 241 are machined on both sides of the connecting shaft 24 and the connecting shaft 24 is penetrated through the third through holes 2211 on both sides, so as to realize the installation of the connecting shaft 24 on the second rotating support end 22. 24 passes through the first through hole 211 of the first rotating support antenna end 21 and the bearing hole of the miniature bearing 23 to support the first rotating support antenna end 21 and allow it to rotate around the connecting shaft 24 to realize the expansion of the antenna. Adaptive adjustment of posture during the process.

As shown in FIG. 7 , the lead frame 4 provided in the embodiment of the present invention is a cube as a whole, with protruding bosses 41 on both sides, and a fifth through hole 411 is machined on the boss 41 , inside the fifth through hole 411 A second spring groove 4111 is machined to fix the second miniature bearing 42, support the long axis 43 of the wire and rotate freely; a rectangular through hole 44 is machined on the side of the lead frame 4, and a row is machined on the upper and lower end faces of the lead frame The sixth through hole 45 and a third spring groove 451 are machined in the sixth through hole 45 for placing the third miniature bearing 46 to realize the free rotation of the wire short axis 47; 43 is connected to the wire stub 47 on this side of the wire and connected to the wire stub 47 on the other side, and finally output on the wire long shaft 43 on this side, and the wire can be passed through the wire on both sides of the lead frame 4. The stub shaft 47 is different in that the direction of the control cable can be changed, and the friction and wear of the control cable can be reduced through the rotation of the long wire shaft 43 around the second micro bearing 42 and the short wire shaft 47 around the third mini bearing 46 .

As shown in FIG. 8 and FIG. 9 , the sliding support 5 provided by the embodiment of the present invention is composed of a supporting column 51 , a sliding supporting bottom plate 52 , and a sliding bearing 53 . Nut connection; through the through holes 512 at the upper end and the second rotating support support end 22 is connected with bolts and nuts; the four corners of the sliding support base plate 52 are provided with four groups of through holes 512 and are connected with the mounting holes of the sliding bearing 53 through bolts.

As shown in FIGS. 10-11 , the sliding guide rail 6 provided in the embodiment of the present invention is connected to the central support 1 to ensure the deployment orientation of the antenna; connection with the sliding support 5 ensures the free deployment of the antenna along its deployment direction.

The working principle of the invention is as follows: the control cable is placed on the reel, connected to the sliding support through the adjustment of the lead frame, and the original control cable directly connected to the reel is guided to the direction of its corresponding antenna module to ensure the release of the control cable. The spatial distance between the terminal and its connecting module is equal, thereby ensuring the synchronization of the antenna deployment. At the same time, the rotation angle of the rotating support changes in real time to meet the inclination of different degrees at each moment caused by the real-time change of the curved surface where the antenna back frame is located when the antenna is unfolded.

The sliding guide rails 6 all correspond to the direction of the unfolding track of the antenna module connected to the sliding support 5 connected to it, and the two control cables are guided and connected to the sliding support 5 by the reel 3 and the lead frame 4, which ensures the direction and release of the control cables. , The deployment of the antenna is stably controlled, and the rotating support 2 connects the sliding support 5 and the central support 1 to ensure that the supporting mechanism meets the change of the space curved surface during the deployment of the antenna.

In the description of the present invention, unless otherwise stated, "plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer" The orientation or positional relationship indicated by , "front end", "rear end", "head", "tail", etc. are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, not An indication or implication that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, is not to be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc. are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Any person skilled in the art is within the technical scope disclosed by the present invention, and all within the spirit and principle of the present invention Any modifications, equivalent replacements and improvements made within the scope of the present invention should be included within the protection scope of the present invention.

Claims (4)

1. A modular deployable antenna ground deployment test system, characterized in that it is provided with:

a central support;

the central support is positioned at the end focuses of the two sliding guide rails and is positioned at the top of the control device;

a sliding support is fixed on the sliding guide rail, and a rotating support is installed at the upper end of the sliding support; a central support lower end platform is fixed at the upper end of the central support, two connecting discs are mounted on the end face of the side face of the central support lower end platform, and the central support is connected with the sliding guide rail through the connecting discs;

the platform at the lower end of the central support is a polygon, and the number of sides and the included angle between the sides of the polygon are determined according to the number of modules of the modularized expandable antenna, the directions of the modules and the included angles between the modules;

a support side wall is fixed at the upper end of the central support, a central support upper end platform is fixed at the upper end of the support side wall, a rotating support is fixed at the upper end of the central support upper end platform, and lead frames are fixed at two ends of the bottom surface of the central support upper end platform;

the whole lead frame is a cube, two sides of the lead frame are provided with extending bosses, and fifth through holes are processed on the bosses;

a second clamp spring groove is processed in the fifth through hole and used for fixing a second miniature bearing, supporting a long shaft of the lead and freely rotating;

processing rectangular through holes on the side surface of the lead frame, and processing a row of sixth through holes on the upper end surface and the lower end surface of the lead frame; a third clamp spring groove is processed in the sixth through hole and used for placing a third miniature bearing to realize the free rotation of the short shaft of the lead;

the control rope is connected to the lead short shaft of one side of the lead from the lead long shaft of the lead frame on one side, connected to the lead short shaft of the other side and finally output on the lead long shaft on the other side, and the change of the direction of the control rope is realized through the difference of the lead short shafts which are penetrated by the lead frames on the two sides; the friction and the abrasion to the control cable are reduced through the rotation of the long lead shaft around the second miniature bearing and the short lead shaft around the third miniature bearing;

a motor is mounted on the supporting side wall, a winding wheel is mounted on an output shaft of the motor, and a spiral line is processed on the surface of the winding wheel;

a spiral line groove is processed on the side wall of the reel, and a rope is embedded in the spiral line groove;

the rotary support is provided with a first rotary support antenna end and a second rotary support end, and the first rotary support antenna end is connected with the second rotary support end;

the upper end of the first rotating support antenna end is provided with an upper end face, and the upper end face is provided with a second through hole; the second rotation supports the support end and is provided with down the terminal surface, is provided with the fourth through-hole on the terminal surface down.

2. The modular deployable antenna floor deployment test system of claim 1, wherein the first rotatably supported antenna end is adapted to be coupled to the antenna module through a second through-hole in an upper end surface thereof; the second rotary support supporting end is connected with the central support upper end platform and the support upright post of the sliding support through a fourth through hole on the lower end surface of the second rotary support supporting end;

a counter bore is processed on a first through hole of the first rotating support antenna end and used for placing a miniature bearing; the second rotating support supporting end is provided with a double-lug structure, and a third through hole is formed in the double-lug structure; first clamp spring grooves are processed on two sides of the connecting shaft, the connecting shaft penetrates through third through holes on the two sides, the connecting shaft is mounted on the second rotating support end, the connecting shaft penetrates through a first through hole of the first rotating support antenna end and a bearing hole of the miniature bearing, the first rotating support antenna end is supported and can rotate around the connecting shaft, and the self-adaptive adjustment of the posture of the antenna in the unfolding process is realized;

the sliding support consists of a support column, a sliding support bottom plate and a sliding bearing, and the support column is connected with the sliding support bottom plate through a through hole at the bottom end of the support column by bolts and nuts;

the four corners of the sliding support bottom plate are provided with four groups of through holes and connected with the mounting holes of the sliding bearings through bolts.

3. A control method for a modular deployable antenna ground deployment test system as claimed in any one of claims 1 to 2, wherein the control method for the modular deployable antenna ground deployment test system comprises: the control cable is arranged on the reel, is connected to the sliding support through the adjustment of the lead frame, and is guided to the corresponding direction of the antenna module by the original control cable directly connected to the winding drum; meanwhile, the rotation angle of the rotation support changes in real time so as to meet the requirement of inclination of different degrees at each moment caused by real-time change of the curved surface of the antenna back frame when the antenna is unfolded;

the sliding guide rail corresponds to the unfolding track direction of the antenna module connected with the sliding support connected with the sliding guide rail, and the two control cables are guided by the wire winding wheel through the wire guide frame and connected with the sliding support; the rotating support is connected with the sliding support and the central support, so that the supporting mechanism is ensured to meet the change of a space curved surface of the antenna in the unfolding process.

4. A satellite-borne deployable antenna, wherein the satellite-borne deployable antenna uses the modular deployable antenna ground deployment test system of any one of claims 1-2.

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