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Design method of topology structure of deployable parabolic antenna wire mesh based on electrical performance optimization

A technology for parabolic antenna and electrical performance optimization, applied in antennas, folded antennas, design optimization/simulation, etc., can solve problems such as inability to meet the structural performance requirements of parabolic antennas, poor antenna profile accuracy, etc.

Active Publication Date: 2019-02-26
XIDIAN UNIV
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Problems solved by technology

The disadvantage of this method is that all internal nodes are limited to ideal paraboloids, and node coordinates are not optimized. Obviously, the accuracy of the antenna design is poor, and it cannot meet the structural performance requirements of the antenna gain on the parabolic antenna.

Method used

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  • Design method of topology structure of deployable parabolic antenna wire mesh based on electrical performance optimization
  • Design method of topology structure of deployable parabolic antenna wire mesh based on electrical performance optimization
  • Design method of topology structure of deployable parabolic antenna wire mesh based on electrical performance optimization

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Embodiment Construction

[0097] Below in conjunction with accompanying drawing and embodiment the invention is described in further detail; figure 1 As shown, the present invention proposes a topology design method based on electrical performance optimization of an expandable parabolic antenna thread network surface, which uses the profile error weighted by the illumination function of the expandable parabolic antenna as the objective function, and optimizes the design of the nodes method. Taking the biased parabolic antenna as an example, the specific steps are as follows:

[0098] Step 101: According to the structural performance requirements of the antenna, select the placement form of the deployable parabolic antenna, and determine the basic parameters such as the optical aperture D of the deployable parabolic antenna, the focal length f of the deployable parabolic antenna, and the uniform tension F of the rope; figure 2 As shown, the initial structure diagram of the front cable mesh surface of ...

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Abstract

The invention discloses a topological structure design method for a foldable paraboloid antenna cable net surface based on electrical performance optimization, and the foldable paraboloid antenna cable net surface consists of a front cable net surface and a rear cable net surface. The design of the front cable net surface comprises the steps: taking internal nodes of the front cable net surface as design variables, taking boundary node fixing as the boundary condition, obtaining all node coordinates of the front cable net surface under the conditions that all internal nodes are not limited by an ideal paraboloid and the internal nodes are in the state of force balance, carrying out the axial translation optimization of all node coordinates based on the antenna gain electrical performances, and achieving the minimization of an illumination weighted profile error of a front cable net surface. The design of the rear cable net surface comprises the steps: employing the same design method as the front cable net surface under the condition that the total height of a foldable paraboloid antenna is met, and obtaining the structure of the rear cable net surface. The method achieves the excellent structural layout of the foldable paraboloid antenna cable net surface, can remarkably improve the profile precision, stability and electrical performance of the foldable paraboloid antenna.

Description

technical field [0001] The invention relates to a structure design method of a space-deployable parabolic antenna, in particular a method for optimizing the shape of the front and rear cable mesh surfaces of the deployable parabolic antenna, specifically a method for designing the topological structure of the cable mesh surface of the deployable parabolic antenna based on electrical performance optimization, which is applied to Structural Design of Spatial Large Aperture Parabolic Antenna. Background technique [0002] In recent years, space activities have become more and more frequent, and large-aperture deployable parabolic antennas have become more popular. The parabolic antenna of the ring truss is mainly divided into five parts: the front cable mesh surface, the rear cable mesh surface, the longitudinal cable, the metal reflection mesh, and the ring peripheral truss. Driven by the power unit, the parabolic antenna expands and contracts smoothly, thereby achieving a hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/08H01Q15/16G06F17/50
CPCG06F30/20H01Q15/161
Inventor 杨东武郭王策王欢方栋张涛李恒贾梦川曹鹏
Owner XIDIAN UNIV
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