CN112713379B - Deployable antenna adopting Y-shaped rib cable net parabolic cylinder, control method and application - Google Patents
Deployable antenna adopting Y-shaped rib cable net parabolic cylinder, control method and application Download PDFInfo
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- CN112713379B CN112713379B CN202011422715.8A CN202011422715A CN112713379B CN 112713379 B CN112713379 B CN 112713379B CN 202011422715 A CN202011422715 A CN 202011422715A CN 112713379 B CN112713379 B CN 112713379B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
- H01Q1/084—Pivotable antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal
- H01Q15/161—Collapsible reflectors
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Abstract
The invention belongs to the technical field of satellite-borne deployable antennas, and discloses a deployable antenna with a Y-shaped rib cable net parabolic cylinder, a control method and application. The Y-shaped rib supporting truss consists of Y-shaped rib expandable units in the parabola direction and scissor expandable units in the baseline direction, and the Y-shaped rib supporting truss and the scissor expandable units are connected through fixed hinged joints and sliding hinged joints at the tail ends of the scissor expandable units; the end points at the two sides and the nodes at the lower side of the cable net are connected with the Y-shaped rib deployable units, and the required parabolic cylinder shape is formed through pre-tension design; the metal wire mesh is laid on the cable net to receive and reflect electromagnetic waves. The Y-shaped rib supporting truss is used as a supporting and unfolding mechanism of the cable net parabolic cylinder deployable antenna, and smooth unfolding of the antenna in the parabolic direction and the baseline direction is achieved under the combined driving of the torsion spring and the inhaul cable. The invention has the advantages of large expansion caliber, high storage ratio, high expansion reliability and strong structure expansibility.
Description
Technical Field
The invention belongs to the technical field of satellite-borne deployable antennas, and particularly relates to a deployable antenna adopting a Y-shaped rib cable net parabolic cylinder, a control method and application.
Background
In recent years, satellite-borne antennas are widely used in important fields such as electronic reconnaissance, resource detection, and telecommunications, and have a trend toward development of large aperture, high precision, high storage ratio, and light weight. Because of the limitation of rocket carrying capacity and carrying cost, the conventional fixed surface reflecting surface antenna can not meet the requirement, and therefore, the large-scale space-borne antenna has the characteristic of being deployable.
At present, scholars at home and abroad carry out a great deal of research work on the deployable antenna with the paraboloid of revolution and obtain favorable results, but the research on the deployable antenna with the parabolic cylinder is not much. The prior deployable antenna with a parabolic cylinder adopts a solid surface folding type or inflatable type structure. Although the fixed surface folding type parabolic cylinder antenna has high profile accuracy, the folded structure size and the overall mass are large, and the requirements of high storage ratio and light weight are difficult to meet. The inflatable antenna forms a parabolic cylindrical reflecting surface by inflation expansion, and although light weight and high storage ratio are realized, the shape surface precision of the inflatable antenna is often not as high as that of a cable-net expandable antenna due to the limitation of material performance, and the stability of the inflatable antenna is generally poor. The cable-net deployable antenna has the characteristics of light weight and easiness in folding, can meet the requirements of large caliber, high precision, high storage ratio and light weight, and is a more or less choice than a large parabolic cylinder deployable antenna.
Through the above analysis, the problems and defects of the prior art are as follows: the prior parabolic cylinder antenna cannot be designed with a large caliber due to factors such as the storage ratio, the quality, the profile precision and the like.
The difficulty in solving the above problems and defects is: when the large-caliber expandable antenna is designed, the antenna shape precision and the structural rigidity are ensured, and simultaneously the antenna containing ratio is improved and the overall quality is reduced, so that the harsh requirements on the antenna structural design are provided.
The significance of solving the problems and the defects is as follows: considering the limitations of rocket carrying capacity and carrying cost, if the design scheme of the antenna ensures high profile precision and structural rigidity, the requirements of high storage ratio and light weight can be met, the launching period can be greatly shortened, the launching cost is reduced, and meanwhile, the application scene of the antenna can be greatly expanded.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an expandable antenna adopting a Y-shaped rib cable net parabolic cylinder, a control method and application.
The invention is realized in such a way that the deployable antenna adopting the Y-shaped rib cable net parabolic cylinder comprises a Y-shaped rib supporting truss, a cable net and a wire mesh;
the Y-shaped rib supporting truss is used as a supporting and unfolding mechanism of the cable net parabolic cylinder expandable antenna and used for forming the basic shape of the parabolic cylinder, and the cable net and the wire mesh provide support; the whole foldable or unfoldable antenna with the cable net parabolic cylinder is folded or unfolded through folding or unfolding;
the cable nets are arranged on the Y-shaped rib supporting trusses in a staggered mode and form a required parabolic cylinder shape with the metal wire mesh under the action of self pretension;
the wire mesh is laid on the cable net to form a required parabolic cylinder antenna reflecting surface for receiving and reflecting electromagnetic waves.
Furthermore, the Y-shaped rib supporting truss consists of Y-shaped rib expandable units in the parabola direction and scissor expandable units in the baseline direction, and the Y-shaped rib expandable units and the scissor expandable units are connected through fixed hinged joints and sliding hinged joints at the tail ends of the scissor expandable units; as a supporting and unfolding mechanism of the deployable antenna of the cable net parabolic cylinder, the antenna can be smoothly unfolded in the parabolic direction and the baseline direction under the combined drive of the torsion spring and the inhaul cable.
Furthermore, the Y-shaped rib deployable units are connected with end points on two sides and nodes on the lower side of the cable net, so that the cable net forms a parabolic cylinder shape; comprises 2 groups of Y-shaped ribs, 1 central supporting rod and 1T-shaped joint; the central support rod is located at the center of the unit, the Y-shaped ribs are symmetrically arranged on two sides of the central support rod, and the Y-shaped ribs are connected through T-shaped joints.
Further, the Y-shaped ribs comprise 1 cross rod, 1 upper inclined rod, 1 lower inclined rod, 1 three-way hinged joint and 2 cable net hanging joints; the cross rod, the upper inclined rod and the lower inclined rod are connected through the three-way hinged joint and rotate relatively.
Furthermore, the scissor type deployable units are used for being connected with the Y-shaped rib deployable units, and form a support back frame of the cable net parabolic cylinder deployable antenna together with the Y-shaped rib deployable units, and the support back frame is used as a folding and unfolding mechanism to fold and unfold the cable net parabolic cylinder deployable antenna in the baseline direction; the device comprises a same-layer fixed hinged joint, a different-layer fixed hinged joint, a same-layer sliding hinged joint, a different-layer sliding hinged joint, a central hinged joint and 2 shear type unit hinged rods;
the scissors unit hinge rods are connected through a center hinge joint and rotate relatively; the same-layer fixed hinged joint, the different-layer fixed hinged joint, the same-layer sliding hinged joint and the different-layer sliding hinged joint are respectively arranged at four end points of the 2 shear type unit hinged rods.
Another object of the present invention is to provide a control method for an expandable antenna using a Y-ribbed cable net parabolic cylinder, including: the mechanism is jointly driven by adopting torsion springs and inhaul cables, the driving moment is provided by a plurality of constant-force torsion springs at the T-shaped joint and the three-way hinged joint when the antenna is unfolded in the parabola direction, then the unfolding speed is controlled by releasing the inhaul cables through a motor, and the antenna is locked by limiting and locking devices at the T-shaped joint and the three-way hinged joint after the antenna is completely unfolded in place; the torsion spring at the central hinged joint provides an initial driving moment for the base line to expand in the direction, and the inhaul cable provides an expansion driving force; the length of the inhaul cable is controlled by winding the motor, and the distances between the same-layer sliding hinged joint and the different-layer sliding hinged joint and the same-layer fixed hinged joint and the different-layer fixed hinged joint are changed, so that the antenna base line is smoothly and stably unfolded in the direction; after the telescopic sliding hinge joint is unfolded to a preset position, the locking is realized by spring pins at the same-layer sliding hinge joint and the different-layer sliding hinge joint.
Another object of the present invention is to provide a satellite-borne deployable antenna, which uses the deployable antenna using the Y-ribbed cable net parabolic cylinder.
Another object of the present invention is to provide an electronic scouting system using the deployable antenna using the Y-ribbed cable net parabolic cylinder.
Another object of the present invention is to provide a resource detection system using the deployable antenna using a Y-ribbed cable net parabolic cylinder.
It is another object of the present invention to provide a telecommunication system using the parabolic dish deployable antenna using a Y-ribbed cable mesh.
By combining all the technical schemes, the invention has the advantages and positive effects that: the invention solves the problem that the prior parabolic cylinder antenna can not be designed with large caliber due to factors such as storage ratio or quality, improves the structural rigidity and the unfolding reliability, and provides a solution for the space large-scale parabolic cylinder expandable antenna. Taking the antenna shown in fig. 1 as an example, the deployed aperture is 3m, the length in the baseline direction is 5m, the deployed height is 1.6m, the folded state is shown in fig. 7, the dimension in the parabolic direction in the folded state is 0.3m, the length in the baseline direction is 0.35m, and the folded height is 1 m. The whole mass of the antenna is 10kg, and the surface density is 0.67kg/m2. It can be seen that the present invention has significant advantages in storage ratio and quality.
The invention adopts the mode of combining the Y-shaped rib unit and the scissor unit, can realize the folding and unfolding of the deployable antenna with the cable net parabolic cylinder in the parabolic direction and the baseline direction, has the advantages of simple structure, light weight, high storage ratio, high structural rigidity and the like compared with the prior deployable antenna with the parabolic cylinder, and provides an effective solution for the design of large-scale and even ultra-large deployable antennas with the cable net parabolic cylinder.
The invention adopts the modular design idea, and the number of modules can be expanded according to the size of the antenna, so that the structure has stronger expansibility and adaptability, and is greatly convenient for processing and manufacturing. The invention adopts the cable net parabolic cylinder deployable antenna with the Y-shaped ribs, so as to overcome the problem that the conventional parabolic cylinder antenna cannot be designed with a large caliber due to factors such as storage ratio or mass, improve the structural rigidity and the deployment reliability, and provide a solution for a large-space parabolic cylinder deployable antenna.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an expandable antenna using a Y-ribbed cable net parabolic cylinder according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a Y-rib support truss according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a Y-rib deployable unit according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a scissor-type deployable unit according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a Y-shaped rib provided in an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of various connectors provided in the embodiment of the present invention.
Fig. 7 is a schematic view of a folded structure of the cable-net parabolic cylinder expandable antenna provided in the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following 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.
Aiming at the problems in the prior art, the invention provides an expandable antenna adopting a Y-shaped rib cable net parabolic cylinder, a control method and application thereof, and the invention is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the cable net parabolic cylinder deployable antenna using Y-shaped ribs provided by the present invention mainly comprises a Y-shaped rib supporting truss 1, a cable net 2 and a wire mesh 3. The Y-shaped rib supporting truss 1 is used as a supporting and unfolding mechanism of the cable net parabolic cylinder expandable antenna, is used for forming the basic shape of a parabolic cylinder, and provides support for the cable net 2 and the wire mesh 3; meanwhile, the parabolic direction and the baseline direction of the antenna are smoothly unfolded through the combined drive of the torsion spring and the inhaul cable. The end points at two sides and nodes at the lower side of the cable net 2 are connected with the Y-shaped rib supporting truss 1, and the required parabolic cylinder shape is formed through pre-tension design. The wire mesh 3 is laid on the cable net to receive and reflect electromagnetic waves.
As shown in fig. 2, the Y-ribbed support truss 1 is composed of a Y-ribbed deployable unit 11 in a parabolic direction and a scissor-type deployable unit 12 in a baseline direction, which are connected by a fixed-type hinge joint and a sliding-type hinge joint at the ends of the scissor-type deployable unit 12. The cable net parabolic cylinder deployable antenna is used as a supporting and deploying mechanism of a deployable antenna of a cable net parabolic cylinder, and smooth deployment of the antenna in the parabolic direction and the baseline direction is realized under the combined drive of the torsion spring and the inhaul cable.
As shown in fig. 3, the Y-rib deployable unit 11 mainly includes 2 sets of Y- ribs 111, 1 central support rod 112, and 1T-joint 113. Wherein, the central support rod 112 is located at the center of the unit, the Y-shaped ribs 111 are symmetrically arranged at both sides of the central support rod 112, and the connection is realized through the T-shaped joints 113.
As shown in fig. 4 and 6, the scissor-type deployable unit 12 mainly includes a same-layer fixed articulated joint 121, a different-layer fixed articulated joint 122, a same-layer sliding articulated joint 123, a different-layer sliding articulated joint 124, a central articulated joint 125, and 2 scissor-type unit articulated rods 126. Wherein, the scissors unit hinge rods 126 are connected through the central hinge joint 125 and can rotate relatively; the same-layer fixed articulated joint 121, the different-layer fixed articulated joint 122, the same-layer sliding articulated joint 123 and the different-layer sliding articulated joint 124 are respectively installed at four end points of 2 scissor unit articulated rods 126.
As shown in fig. 5 and 6, the Y-shaped rib 111 mainly includes 1 cross bar 1111, 1 upper oblique bar 1112, 1 lower oblique bar 1113, 1 three- way hinge joint 1114 and 2 cable net hinge joints 1115, wherein the cross bar 1111, the upper oblique bar 1112 and the lower oblique bar 1113 are connected by the three-way hinge joint 1114 and can rotate relatively. Fig. 6 (a) is a layer-fixing hinge joint 121; fig. 6 (b) the different-layer fixed articulated joint 122; fig. 6 (c) the same layer sliding hinge joint 123; fig. 6 (d) a different layer sliding hinge joint 124; fig. 6 (e) a center hinge joint 125.
The mechanism is driven by a torsion spring-cable combination, a plurality of constant-force torsion springs at the T-shaped joint 113 and the three-way hinged joint 1114 provide driving torque for unfolding in the parabola direction, then the motor releases the cable to control the unfolding speed, and after the cable is completely unfolded in place, the limiting and locking devices at the T-shaped joint 113 and the three-way hinged joint 1114 complete antenna locking. The baseline direction deployment is provided by the torsion spring at the center hinge joint 125 providing an initial drive torque to overcome the "dead center" that may occur in the fully collapsed condition, and then the deployment drive force is provided by the cable. The length of the inhaul cable is controlled by winding the motor, so that the distances between the same-layer sliding hinged joint 123 and the different-layer sliding hinged joint 124 and the same-layer fixed hinged joint 121 and the different-layer fixed hinged joint 122 are changed, and the antenna base line can be smoothly unfolded in the direction. After being unfolded to a predetermined position, locking is achieved by spring pins at the same-layer sliding hinge joint 123 and the different-layer sliding hinge joint 124.
The antenna shown in fig. 1 is selected as an embodiment, the antenna has an expanded aperture of 3m, a length in the baseline direction of 5m, an expanded height of 1.6m, a folded state shown in fig. 7, a dimension in the parabola direction of 0.3m in the folded state, a length in the baseline direction of 0.35m, and a folded height of 1 m. That is, the storage ratios of the antenna in the parabolic direction, the baseline direction, and the height direction are 10, 14.29, and 1.6, respectively, and the overall storage ratio is 228.64. The whole mass of the antenna is 10kg, and the surface density is 0.67kg/m2. Therefore, the invention has remarkable advantages in storage ratio and quality.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. An expandable antenna adopting a Y-shaped rib cable net parabolic cylinder is characterized in that the expandable antenna adopting the Y-shaped rib cable net parabolic cylinder is composed of a Y-shaped rib supporting truss, a cable net and a wire mesh;
the Y-shaped rib supporting truss is used as a supporting and unfolding mechanism of the cable net parabolic cylinder expandable antenna and used for forming the basic shape of the parabolic cylinder, and the cable net and the wire mesh provide support; the whole foldable or unfoldable antenna with the cable net parabolic cylinder is folded or unfolded through folding or unfolding;
the cable nets are arranged on the Y-shaped rib supporting trusses in a staggered mode and form a required parabolic cylinder shape with the metal wire mesh under the action of self pretension;
the metal wire mesh is laid on the cable net to form a required parabolic cylinder antenna reflecting surface for receiving and reflecting electromagnetic waves;
the Y-shaped rib supporting truss consists of a Y-shaped rib expandable unit in the parabola direction and a shear type expandable unit in the baseline direction, and the Y-shaped rib expandable unit and the shear type expandable unit are connected through a fixed hinged joint and a sliding hinged joint at the tail end of the shear type expandable unit; the device is used as a supporting and unfolding mechanism of the deployable antenna of the cable net parabolic cylinder, and realizes the smooth unfolding of the antenna in the parabolic direction and the baseline direction under the combined drive of the torsion spring and the inhaul cable;
the scissor type deployable units are used for being connected with the Y-shaped rib deployable units, and form a support back frame of the cable net parabolic cylinder deployable antenna together with the Y-shaped rib deployable units, and the shear type deployable units are used as a folding and unfolding mechanism to fold and unfold the cable net parabolic cylinder deployable antenna in the baseline direction; the device comprises a same-layer fixed hinged joint, a different-layer fixed hinged joint, a same-layer sliding hinged joint, a different-layer sliding hinged joint, a central hinged joint and 2 shear type unit hinged rods;
the scissors unit hinge rods are connected through a center hinge joint and rotate relatively; the same-layer fixed hinged joint, the different-layer fixed hinged joint, the same-layer sliding hinged joint and the different-layer sliding hinged joint are respectively arranged at four end points of the 2 shear type unit hinged rods.
2. The parabolic cylinder deployable antenna using a Y-ribbed cable net according to claim 1, wherein the Y-ribbed deployable cells are connected to both side end points and lower side nodes of the cable net, so that the cable net forms a parabolic cylinder shape; comprises 2 groups of Y-shaped ribs, 1 central supporting rod and 1T-shaped joint; the central support rod is located at the center of the unit, the Y-shaped ribs are symmetrically arranged on two sides of the central support rod, and the Y-shaped ribs are connected through T-shaped joints.
3. The deployable antenna with a Y-ribbed cable net parabolic cylinder according to claim 2, wherein the Y-rib comprises 1 cross bar, 1 upper diagonal bar, 1 lower diagonal bar, 1 three-way hinge joint, and 2 cable net hooking joints; the cross rod, the upper inclined rod and the lower inclined rod are connected through the three-way hinged joint and rotate relatively.
4. A control method of the deployable antenna with the Y-ribbed cable net parabolic cylinder according to any one of claims 1 to 3, wherein the control method comprises: the mechanism is jointly driven by adopting torsion springs and inhaul cables, the driving moment is provided by a plurality of constant-force torsion springs at the T-shaped joint and the three-way hinged joint when the antenna is unfolded in the parabola direction, then the unfolding speed is controlled by releasing the inhaul cables through a motor, and the antenna is locked by limiting and locking devices at the T-shaped joint and the three-way hinged joint after the antenna is completely unfolded in place; the torsion spring at the central hinged joint provides an initial driving moment for the base line to expand in the direction, and the inhaul cable provides an expansion driving force; the length of the inhaul cable is controlled by winding the motor, and the distances between the same-layer sliding hinged joint and the different-layer sliding hinged joint and the same-layer fixed hinged joint and the different-layer fixed hinged joint are changed, so that the antenna base line is smoothly and stably unfolded in the direction; after the telescopic sliding hinge joint is unfolded to a preset position, the locking is realized by spring pins at the same-layer sliding hinge joint and the different-layer sliding hinge joint.
5. A satellite-borne deployable antenna, which is characterized in that the deployable antenna adopting the Y-shaped rib net parabolic cylinder surface as claimed in any one of claims 1 to 3 is used.
6. An electronic reconnaissance system, wherein the electronic reconnaissance system uses the deployable antenna using the Y-ribbed cable net parabolic cylinder of any one of claims 1 to 3.
7. A resource detection system, characterized in that the resource detection system uses the deployable antenna with the Y-ribbed cable net parabolic cylinder of any one of claims 1-3.
8. A telecommunication system, wherein the telecommunication system uses the deployable antenna with Y-ribbed cable net parabolic cylinder of any one of claims 1 to 3.
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| CN113488772B (en) * | 2021-07-05 | 2022-09-30 | 西安电子科技大学 | Novel foldable netted annular deployable antenna |
| CN113675615B (en) * | 2021-08-25 | 2023-11-24 | 沈阳建筑大学 | Space navigation folded antenna reflector and satellite system provided with same |
| CN114171883B (en) * | 2021-11-02 | 2022-12-06 | 西安电子科技大学 | Parabolic cylinder deployable antenna system, control method and application |
| CN114256604B (en) * | 2021-12-09 | 2024-04-16 | 上海宇航系统工程研究所 | Parabolic cylinder antenna based on triangular prism foldable unit |
| CN116190974B (en) * | 2022-12-27 | 2024-02-23 | 中国电子科技集团公司第五十四研究所 | Short wave logarithmic period antenna |
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