A method and a device for determining a cable net structure of an annular mesh reflector

A technology for determining the method and network structure, which is applied in the fields of instruments, image data processing, special data processing applications, etc., and can solve the problems that the algorithm cannot find the rope, and the cable-net structure cannot maintain balance.

Active Publication Date: 2018-12-28
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

The existing method for determining the structure of the cable net has certain requirements for the arc depth and total height of the front tension net 1 and the rear tension net 5. When the length of the vertical bar of the truss is less than a certain value, the existing algorithm cannot find the full positive solution of the rope, and the following will occur: figure 2 The problem that the cablenet structure shown does not maintain balance

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  • A method and a device for determining a cable net structure of an annular mesh reflector
  • A method and a device for determining a cable net structure of an annular mesh reflector
  • A method and a device for determining a cable net structure of an annular mesh reflector

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specific Embodiment

[0134] Take a ring mesh antenna with 30 parallelogram units in the truss and a truss expansion diameter of 10m as an example. The antenna diameter is 10m, the focal length of the front tension net is 10m, and the offset distance of the reflector is 6m. The average pretension of the rope section forming the front tension net is 20N. Both the front tension net and the back tension net are mesh structures composed of triangular mesh , the truss height is 1m.

[0135] Determination result: the length of the shortest tension rope in the tension array is 173mm, the tension mean value of the rope section forming the front tension net is 20N, the maximum and minimum tension ratio in the rope section forming the front tension net is 2.5, and the tension ratio of the net rope section forming the back tension net is 2.5. The average tension value is 49.7N, and the maximum and minimum tension ratio in the rope segments forming the back tension net is 2.5. Such as Figure 7 As shown, the...

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Abstract

The invention provides a method and a device for determining the cable net structure of an annular mesh reflector, belonging to the technical field of spacecraft structure design. The method comprises: in accordance with that structural parameter of the reflector, the structural parameters of the front tension net and the tension of each tension rope in the corresponding tension matrix being determined, according to the three-dimensional position coordinates of each first node, determining the XOY plane coordinates of each second node forming the rear tension net, determining the force densityof each second rope segment according to the force density of each first rope segment, and determining the three-dimensional position coordinates of each second node forming the rear tension surfaceaccording to the plane coordinates of each second node, the force density of each second rope segment, and the tension of each tension rope; according to the three-dimensional position coordinates ofthe first node and the three-dimensional position coordinates of the second node, the length of each tension rope being determined to determine the entire cable network structure. The invention effectively solves the possible problems of the post-tensioned net rope when the length of the truss vertical bar is low, and obtains a stable and reliable cable net structure which meets the electric performance requirements.

Description

technical field [0001] The invention relates to a method and a device for determining a cable net structure of an annular mesh reflector, and belongs to the technical field of aerospace vehicle structure design. Background technique [0002] In order to detect low-power signals, the new generation of mobile communication satellites, electronic reconnaissance satellites, and data relay satellites have put forward an urgent need for large-aperture deployable antenna reflectors. Among them, the ring-shaped truss-type deployable antenna reflector (also known as the peripheral truss-type deployable antenna) has the characteristics of simple structure, high reliability, and large expansion-retraction ratio, and the increase of the caliber within a certain range will not change the antenna reflector. The structural form, the mass will not increase proportionally, it is the most ideal structural form of the large spaceborne deployable antenna reflector at present. [0003] Such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06T17/20
CPCG06T17/20G06F30/17G06F2119/06
Inventor 范叶森马小飞李欢笑
Owner XIAN INSTITUE OF SPACE RADIO TECH
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