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Satellite-borne planar SAR antenna extensible support structure rod piece adjusting and installing method

A technology of supporting structures and rods, applied in geometric CAD, special data processing applications, instruments, etc., can solve problems such as locking, unfolding, and long assembly and adjustment cycles, and achieves easy implementation, simple calculation algorithms, and guaranteed The effect of unfolding reliability

Active Publication Date: 2018-08-03
XI AN JIAOTONG UNIV
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Problems solved by technology

Therefore, a method for quantitatively optimizing the installation and adjustment of the extendable support structure rods suitable for space-borne planar SAR satellite antennas is proposed, so as to solve the problems caused by "blind adjustment" live" engineering ills

Method used

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  • Satellite-borne planar SAR antenna extensible support structure rod piece adjusting and installing method
  • Satellite-borne planar SAR antenna extensible support structure rod piece adjusting and installing method
  • Satellite-borne planar SAR antenna extensible support structure rod piece adjusting and installing method

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Embodiment Construction

[0030] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] Such as figure 1As shown, it is the plane projection model of the spaceborne planar SAR antenna deployable support structure. In the actual projection model, the rods OF, CF and EF are actually formed by two rods connected by locking hinges. In order to simplify the calculation, they are regarded as is an equivalent member, figure 1 There are 90° and 180° locking hinges at the joints of A and D respectively; figure 2 As shown, the schematic diagram of the actual length of the rod is given; since the deployable support structure is an over-constrained structure during the assembly process, when the rod length deviates or the hinge installation positioning error exists, the entire structure will be deformed and coordinated, as shown in image 3 As shown, the solid line represents the ideal configuration, and th...

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Abstract

The invention discloses a satellite-borne planar SAR antenna extensible support structure rod precise adjusting and installing method. The method comprises the following steps that geometrical parameters and locking hinge stiffness parameters of the extensible support structure are determined; a deformation compatibility equation of an extensible support structure is built, wherein the deformationcompatibility equation comprises a rod length compatibility equation, a rod piece intersection mechanical equilibrium equation and an internal and external antenna panel moment balance equation; SARantenna total deformation energy serves as a target object function, the three equations in step S2 serve as constraint conditions, and an extensible support structure rod optimized adjusting and installing basic mathematical model is built; the rod length adjustment amount is calculated through the basic mathematical model in step S3, and precise installation and adjusting are completed. According to the method, by means of a satellite-borne planar SAR antenna extensible support structure rod precise, quantitative, digital and optimized adjusting and installing technology which takes the minimum structural strain energy as the object function and takes the deformation compatibility equation and assembly precision as the constraint conditions, rod pieces are installed and adjusted quantitatively and digitally in the ground assembly process.

Description

technical field [0001] The invention belongs to the technical field of space-borne planar SAR antenna adjustment and installation; in particular, it relates to a method for adjusting and installing rods of a space-borne planar SAR antenna deployable support structure. Background technique [0002] The deployable support structure of spaceborne planar SAR satellite antenna has many ring constraints and complex topological structure, which belongs to a typical multi-loop closed-chain rod system structure. In order to realize the smooth deployment and normal service of the spaceborne planar SAR satellite antenna in space, the assembly accuracy of the deployable support structure must be guaranteed during the ground assembly process. However, due to the influence of rod length error, hinge assembly positioning error and rod deformation, the satellite antenna pointing accuracy often exceeds the design requirements. For this reason, engineering personnel generally need to adjust ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F2119/06
Inventor 赵强强余德文郭俊康赵鼎堂洪军
Owner XI AN JIAOTONG UNIV
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