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Form-given mesh antenna pretension calculation method

A calculation method and pre-tension technology, applied in calculation, design optimization/simulation, special data processing applications, etc., can solve problems such as the inability to realize electromagnetic wave reflection mesh surface tension, and achieve broad market application prospects, smooth logic, and reasonable design Effect

Active Publication Date: 2018-06-15
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

[0004] The existing pretension calculation methods are all for the mesh antenna with double-layer cable net structure. The mesh surface is a parabolic surface, and the rope units only bear the tension. Therefore, the traditional pretension algorithm cannot realize the electromagnetic wave reflection of some nodes on the mesh surface. tension at negative

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Embodiment Construction

[0053] In order to make the solution of the present invention clearer, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0054] like Figure 1~2 As shown, a method for calculating the pretension of a shaped mesh antenna, the shaped mesh antenna includes an upper cable net 1, a middle cable net 2, a lower cable net 3, a truss 4 and a rope 5; the truss 4 adopts a hollow cylindrical shape The frame structure has an upper cable net 1, a middle cable net 2 and a lower cable net 3 in sequence in the axial direction, and the nodes of the upper cable net 1 and the lower cable net 3 are connected to the nodes of the middle cable net 2 through ropes 5. To maintain the shape of the middle cable network 2 mesh surface; its calculation method includes the following steps:

[0055] S1: Taking the center of truss 4 as the reference, taking the axial direction of truss 4 as the z-axis, and the radial direction of t...

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Abstract

The invention discloses a form-given mesh antenna pretension calculation method. The method is used for calculating net unit pretension of a spatial form-given mesh antenna unfolded structure or a spatial form-given mesh antenna folded structure and comprises the steps that the right-hand rule is utilized to establish an x-y-z-axis space rectangular coordinate system with the center of a truss being a benchmark, the axial direction of the truss being a z axis and the radial direction of the truss being an x axis, and net pretension of a middle cable net is calculated according to preset average pretension; according to the net pretension of the middle cable net, net pretension of an upper cable net is calculated; and according to the net pretension of the middle cable net and the net pretension of the upper cable net, net pretension of a lower cable net is calculated. According to the method, through tension calculation on the three-layer form-given mesh antenna, different areas of anelectromagnetic wave reflection net have certain concave-convex performance, and the defect of a traditional pretension calculation method is overcome.

Description

technical field [0001] The invention relates to a pretension calculation method of a shaped mesh antenna, which is especially suitable for near-earth satellite detection and belongs to the technical field of antenna profile design. Background technique [0002] Due to the continuous advancement of aerospace science and technology, space activities such as manned spaceflight and deep space exploration have put forward higher requirements for spaceborne antenna reflectors, such as larger diameter, high surface accuracy, high storage ratio, and lighter weight. However, due to the limitation of the carrying capacity of the vehicle, large-volume antennas cannot be placed in the load compartment. Therefore, large-scale spaceborne antennas often use deployable structures to solve this problem. At present, the process of assembling and testing the deployable antenna is mainly done on the ground. When the spacecraft is launched, the deployable antenna is folded and installed in the f...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 李欢笑范叶森马小飞郑士昆龚博安葛兴涛王海涛张大为张旭涛
Owner XIAN INSTITUE OF SPACE RADIO TECH
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